Hire the best Open Source developers

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Clients rate Open Source developers
Rating is 4.7 out of 5.
4.7/5
based on 104 client reviews
  • US$75 hourly
    I am an enthusiastic, Denver based mechanical engineer with an extensive background in design for manufacturing and the appropriate use of additive manufacturing technology. With over 13 years of industry experience, I'm passionate about designing exceptional and innovative products. Before I started freelancing, I was a Sr. Mechanical Engineer at Aleph Objects and worked with a multidisciplinary team to produce several award winning 3D printers and accessories. Following that, I launched my own brand and line of niche products in the industrial 3D printing space, gaining experience with brand communication, crowdfunding and small scale production management. As a freelancer, I've had the opportunity to work with some fantastic clients producing everything from EV chargers and home battery systems to fitness equipment, college courses and medical devices. I run a small print farm in house for prototyping, including resin and oversized material extrusion printers. This helps reduce prototyping costs, speeds up the development process and allows the fastest iteration time possible when needed. Here are some of the services I offer: - Design Conceptualization (early stage sketches and ideation) - 3D Design - Photorealistic Product Renderings - Manufacturing Documentation *Bill of Materials (BoM) * 2D Drawings * Material and Manufacturing Method Advice * Tech Packs - Electronics Prototyping - Product Prototyping - Small Batch Production - Contract 3D Printing
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    Reverse Engineering
    Mechanical Engineering
    Mechanical Design
    Git
    Product Design
    Blender
    3D Printing
    Freecad
    CAD
    3D Rendering
    3D Design
    3D Modeling
  • US$95 hourly
    I have experience in building custom software solutions tailor-made to your requirements. My skill-set spans multiple domains like financial, healthcare, eCommerce, advertising, education, life sciences, hotel/hospitality, media and entertainment, retail, real estate, sports and fitness, mobile and wireless, technology, non-profit and more industries. I use structured programming incorporating leading & tested frameworks, best programming practices, coding guidelines and standards. As the technology advances gradually and the programming landscape changes globally, inorder to accommodate the world's growing technological needs, I constantly evaluate the latest trends in the development community and try to constantly improve and upgrade my skills to provide my clients the best possible development solutions.
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    OAuth
    Moodle
    Linux System Administration
    Google Map Maker
    Facebook Development
    Google Cloud Platform
    ChatGPT
    AJAX
    Angular
    React
    Python
    Database
    PHP
    .NET Framework
  • US$220 hourly
    I am a CTO level consultant specializing in research and development of Robotics systems. Over the nine years of my professional careers I learned to apply kaizen (continuous improvement) in software and robotics development. As you will see from my profile I work mostly with wheeled mobile robots and drones, often utilizing Robot Operating System (ROS). In my view good practices and iterative development are key to creating high quality products. Let's make them together and let's solve issues before they even arise. I take very good care of honing my skills and staying up to date on the current state of Robotics thus each week I release a new issue of my Weekly Robotics newsletter. Below you will find some highlights of my expertise: ROS: * Navigation stack * Localization stack * ros_control * cartographer, slam_toolbox, AMCL * Deploying ROS on custom robotic solutions * Developing drivers for sensors and actuators Drones: * Px4 flight stack * ArduPilot (ArduCopter, ArduRover) * Developing drivers for custom sensors for the above flight stacks * Using ROS on a companion computer for high level control Sensors experience: * ToF sensors (single points and arrays) * Ultra Wide Band (UWB) localization * RTK GPS * Single and multiplane LiDARs (Hokuyo, RPLIDAR, Livox, Ouster OS-1) * IMUs (RazorIMU, Bosch BNO055, PhidgetSpatial, Xsens) * Tracking modules (Realsense T265) * 3D Cameras (Realsense D435i)
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    Drone
    Robotics
    Embedded System
    Mechatronics
    Robot Operating System
    Python
    Desktop Application
    C
    C++
    C#
  • US$50 hourly
    Investigator at The Bearman Firm • Specializing in locating individuals and uncovering critical information to solve complex cases. • Conduct comprehensive investigative research and background searches. • Expert in open source intelligence, evidence gathering and information analysis. • Unique ability to discern relevant information. • Implement exclusive methods for uncovering complex and difficult to find people and information. • Identity resolution, which involves connecting a user's digital interactions across various devices, channels, and touchpoints into a unified customer profile. I can accurately link different data points to provide a comprehensive view of an individual's online behavior.
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    Due Diligence
    Information Gathering
    Research & Strategy
    Research Paper Writing
    Research Interviews
    Research & Development
    Investigative Reporting
    Digital Forensics
  • US$45 hourly
    With over 25 years of hands-on experience in system administration and a profound understanding of GNU/Linux environments, I offer expertise in open source technologies that drive reliable and efficient systems. My proficiency extends to development on various programming languages, enabling me to craft robust solutions tailored to client requirements. Core Competencies: Systems Administration: Proficient in managing all aspects of the Linux operating system, including CentOS, Debian, Ubuntu, and Slackware distributions. Skilled in system optimization, security, and performance tuning. Software Development: Proficient developer with a focus on Perl, Python, PHP, C, C++, SQL, and JavaScript. Well-versed in Object-Oriented Programming (OOP) principles and application development for diverse platforms. Script Development: Adept at developing scripts in Perl, Python, Bash, and Lua for automation, integration, and system enhancement. Strong advocate for leveraging scripting languages for efficient operations. Database Administration: Extensive experience in administering MySQL/MariaDB, PostgreSQL, Oracle, SQLite, and Redis databases. Proficient in database optimization, replication, and backup strategies. Networking Specialist: Deep understanding of TCP/IP and OSI stack layers, with expertise in proxies, HTTP protocol, RADIUS, VPNs, VLAN, SNMP, netflow/ipfix, and BGP. Experienced in designing, implementing, and troubleshooting complex network infrastructures. Monitoring Architecture: Skilled in designing and implementing infrastructure monitoring solutions, including data gathering, processing, and analysis dashboards. Proficient in monitoring various network devices and systems across diverse environments. Web Hosting and Development: Proficient in web server hosting using Apache, Plack, Starman, and Flask, with expertise in HTML5, JavaScript, and REST APIs. Capable of developing dynamic web solutions in Perl, Python, Bash, or C. Professional Approach: I am committed to delivering tailored solutions that align with my clients' needs and exceed their expectations. My creative thinking and positive attitude ensure that challenges are met with innovative solutions, fostering long-term partnerships built on trust and reliability. Conclusion: With a comprehensive skill set and a proven track record of success, I am dedicated to providing exceptional service and driving continuous improvement in every project I undertake. Let's collaborate to transform your vision into reality and achieve unparalleled success.
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    Network Engineering
    Information Security
    RESTful API
    Unix
    Zabbix
    RADIUS
    Grafana
    Multiprotocol BGP
    Systems Development
    CentOS
    System Monitoring
    Linux
  • US$35 hourly
    👋 Hi, I'm Mark, CEO and CTO at Pinely. I lead our development projects, ensuring they align perfectly with your business objectives. We provide: Web & Mobile Apps: We develop on iOS, Android, and web platforms. Desktop Applications: Tailored software for Windows, MacOS, and Linux. AI & ERP Solutions: We integrate advanced AI and efficient ERP systems into your operations. Client Benefits: Start right away with rapid delivery. Straightforward, clear updates without jargon. Consistent results across various industries. What Clients Say: "Pinely delivers on promises." "The Pinely project manager really cares about our project." "Working with Pinely, we've achieved big things." Check our Clutch profile for more reviews. Let's talk and solve your challenge together. Regards, Mark 🌲
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    SQL
    Redux
    Node.js
    Agile Project Management
    React
    Auth0
    MongoDB
    Elasticsearch
    Telegram API
    JavaScript
  • US$35 hourly
    Experienced technical writer and SEO writer with a track record of increasing website traffic and boosting conversion rates, resulting in higher revenue for clients. Do you need help with technical content? With over two decades of experience creating technical documents that are accurate, easy to understand and get the point across, I can help you with your requirements. About Me I am an Electrical engineer with BS & MS degrees, with five years of freelance writing experience and over 16 years of experience in the telecommunication/data networking industry, designing and deploying wide-area networks for data/voice/video. What I do: 🏆 SEO-optimized content 🏆 Copywriting 🏆 YouTube Scripts 🏆 Research 🏆 Technical reports and presentations 🏆 User manuals 🏆 Editing and proofreading 🏆 Network design 🏆 Training material Tools I use: 🔎 Ahrefs / Surfer SEO ⌨️ Zendesk / WordPress 🎨 SnagIt, InDesign 🎙️ Descript 💬 Slack / WhatsApp / Telegram / Skype 📆 Asana CLIENT TESTIMONIALS "Faisal demonstrated a phenomenal attention to detail, punctuality, professionalism, and kindness for the duration of our project. He also brings a wealth of practical and theoretical knowledge on many tech topics." "Faisal was very responsive, did a great job on the materials provided and was very good about asking for feedback to improve his product. If we have more requirements of this nature in the future I would not hesitate to reach out to Faisal." "We have been delighted with the work from Mr. Faisal due to his go-to mindset. He has been great to work with and has put much effort into the work he has done. Every delivery has exceeded our expectations, and we would definitely recommend him for your content creation projects." "Faisal does great work. He is a skilled writer, and his grasp of marketing copy is excellent. I would highly recommend this freelancer for your next writing project." "Faisal was excellent to work with and quite responsive to our needs. He is a solid English writer." "Shaikh was a pleasure to work with and I highly recommend him for your proofreading, editing project. He is very polite, professional and offers editing ideas that improve and enhance your project. I would definitely use him again"
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    SnagIt
    WordPress
    Ahrefs
    Wireless Network Implementation
    Scriptwriting
    IT Infrastructure
    SEO Keyword Research
    Blog Writing
    Copywriting
    On-Page SEO
    SEO Writing
    Electrical Engineering
    Surfer SEO
    Technical Documentation
    Technical Writing
  • US$25 hourly
    Hey, My name is Naveen Shankar Sharma, it's evident that I am an experienced and dedicated sourcing and procurement professional with over 15 years of experience. I have an extensive background in sourcing products, vendors, and manufacturers across India, which indicates a deep understanding of the market and its intricacies. My range of activities as a sourcing agent covers all aspects of the sourcing and procurement process, including product origin sourcing, vendor identification, factory auditing, price negotiation, quality control, and logistics services. It's impressive that I have sourced and procured over 200 products and vendors, both through online channels and door-to-door approaches, which shows adaptability and resourcefulness in my work. My focus on assisting small companies and attention to detail, such as ensuring on-time delivery and product and packaging inspections, reflects your commitment to providing excellent service to my clients. If there's anything specific, I'd like to know or discuss, whether related to sourcing, procurement, or any other topic, feel free to share, and I'll be happy to assist you further!
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    Logistics Coordination
    Product Sourcing
    Sourcing
    Factory & Supplier Auditing
    Buying
    Product Development
    Supply Chain & Logistics
    Market Research
    Procurement
    Quality Inspection
    Supplier Search
  • US$15 hourly
    Freelancer since 2014 and customer support for 14 years. I am results oriented, dependable and a professional with a solid performance track record.
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    Helpshift
    Shopify
    Shopify Apps
    Gmail
    Customer Service
    Technical Support
    Helpdesk
    Online Chat Support
    Email Support
    Zendesk
  • US$13 hourly
    Multilingual Senior Technical Customer Agent Specialist and Voice-Over (Arabic, French, English) Greetings! I am a seasoned professional with expertise in providing top-notch technical customer support and delivering captivating voice-over services in Arabic, French, and English. As a Senior Technical Customer Agent, I excel in troubleshooting and resolving complex technical issues, ensuring customer satisfaction, and fostering positive client relationships. My extensive experience in voice-over work allows me to bring scripts to life with a versatile range of tones and emotions. Let me enhance your projects with my linguistic and technical skills, ensuring excellence and a memorable customer experience.
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    French to English Translation
    Customer Service
    Arabic to English Translation
    English to Arabic Translation
    Microsoft Word
    Microsoft Excel
    English to French Translation
    Customer Support
    Windows Administration
    Online Chat Support
    Email Support
    Arabic
    French
  • US$12 hourly
    I've been with the call center industry for almost four years and providing technical assistance is one of my expertise. We provide help to users from the United States by assisting them on how to fix their internet issues. A critical part of the job is not just providing technical assistance but also making customers feel that you care and understand their issues.
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    Email Communication
    HTML
    Technical Support
    PHP
    Adobe Photoshop
    Customer Service
    Visual Basic
    Email Support
  • US$40 hourly
    Passionate about software architecture, I excel in assembling components for optimized solutions. With experience in Python, Node.js, ETL pipelines, backend APIs, 3rd Party Integration, DevOps, and Agile project management, I create efficient and reliable systems. I thrive on solving complex problems, writing elegant, efficient code, and adhering to best practices. Specializing in React, Vue, and React Native, I bridge aesthetics and functionality to deliver captivating digital experiences. 𝐖𝐞𝐛 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 𝐅𝐫𝐚𝐦𝐞𝐰𝐨𝐫𝐤𝐬: ⭐️ Django/Flask/FastAPI: Expertise in Python web frameworks for robust backend development. ⭐️ React/Vue/Next.js/Nuxt.js: I create dynamic and interactive user interfaces with JavaScript frameworks. ⭐️ Node: Proficient in building server-side applications with Node.js. 𝐁𝐚𝐜𝐤𝐞𝐧𝐝 𝐅𝐫𝐚𝐦𝐞𝐰𝐨𝐫𝐤𝐬 𝐚𝐧𝐝 𝐋𝐢𝐛𝐫𝐚𝐫𝐢𝐞𝐬: ⭐️ Django REST Framework/Celery Beat/Celery/Redis: I build scalable and efficient backend solutions using Django and Celery. ⭐️ Smart Contracts: I have experience in blockchain development with smart contracts. 𝐉𝐚𝐯𝐚𝐒𝐜𝐫𝐢𝐩𝐭 𝐚𝐧𝐝 𝐖𝐞𝐛 𝐓𝐞𝐜𝐡𝐧𝐨𝐥𝐨𝐠𝐢𝐞𝐬: ⭐️ ES6/Vue/React/Next.js/Nuxt.js: Proficient in modern JavaScript and popular web technologies for front-end development. 𝐌𝐨𝐛𝐢𝐥𝐞 𝐀𝐩𝐩 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭: ⭐️ React Native: I create cross-platform mobile applications using React Native. 𝐂𝐨𝐧𝐭𝐚𝐢𝐧𝐞𝐫𝐢𝐳𝐚𝐭𝐢𝐨𝐧 𝐚𝐧𝐝 𝐎𝐫𝐜𝐡𝐞𝐬𝐭𝐫𝐚𝐭𝐢𝐨𝐧: ⭐️ Kubernetes: I'm well-versed in setting up and managing Kubernetes clusters, ensuring efficient container orchestration. ⭐️ Docker/DockerCompose: Proficient in Docker and Docker Compose for containerization and application deployment. ⭐️ Kubernetes Managed Services: Experienced in leveraging GKE, EKS, and AKS for scalable and reliable container management. ⭐️ Compute Engine: I've worked extensively with Google's Compute Engine for cloud computing resources. ⭐️ Cloud Run: Skillful in using Cloud Run to deploy containerized applications in a serverless environment. 𝐃𝐚𝐭𝐚𝐛𝐚𝐬𝐞 𝐚𝐧𝐝 𝐃𝐚𝐭𝐚 𝐖𝐚𝐫𝐞𝐡𝐨𝐮𝐬𝐢𝐧𝐠: ⭐️ Snowflake/BigQuery: I excel in data warehousing with Snowflake and BigQuery for scalable analytics. ⭐️ Postgres/Cloud SQL: Proficient in both PostgreSQL and Google Cloud SQL for robust database solutions. ⭐️ Dataflow/Cloud Storage: Skilled in data processing with Google Dataflow and Cloud Storage. ⭐️ ETL Pipelines/Data Pipeline: I can design, implement, and maintain ETL pipelines and do transformation through Pandas and NumPy. ⭐️ Redash/Metabase: Proficient in setting up interactive dashboards for data visualization. ⭐️ Compute Engine/Cloud Dataflow: Leveraging Compute Engine and Cloud Dataflow for powerful data processing. 𝐃𝐞𝐯𝐎𝐩𝐬 𝐚𝐧𝐝 𝐂𝐈/𝐂𝐃: ⭐️ GitOps/CI/CD Pipelines: I adopt best practices in DevOps, using GitOps and CI/CD pipelines to ensure reliable, automated deployments. ⭐️ Cloud Monitoring/Rancher/FluxCD/ArgoCD: Proficient in monitoring, Rancher orchestration, ArgoCD, and FluxCD for GitOps. 𝐀𝐮𝐭𝐨𝐦𝐚𝐭𝐢𝐨𝐧 & 𝐒𝐜𝐫𝐢𝐩𝐭𝐢𝐧𝐠: ⭐️ TDD, BDD ⭐️ Python Scripting, Bash Scripting 𝐒𝐞𝐫𝐯𝐞𝐫𝐥𝐞𝐬𝐬 𝐚𝐧𝐝 𝐂𝐥𝐨𝐮𝐝 𝐒𝐞𝐫𝐯𝐢𝐜𝐞𝐬: ⭐️ App Engine/Firebase: Experienced in Google App Engine and Firebase for serverless application hosting. ⭐️ Cloud Storage: Proficient in leveraging Google Cloud Storage for scalable file storage. ⭐️ AWS Lambda, Google Cloud Functions 𝐌𝐨𝐧𝐢𝐭𝐨𝐫𝐢𝐧𝐠 𝐚𝐧𝐝 𝐎𝐛𝐬𝐞𝐫𝐯𝐚𝐛𝐢𝐥𝐢𝐭𝐲: ⭐️ Grafana/Prometheus/Datadog: I ensure systems are well-monitored and provide insights through Grafana, Prometheus, and Datadog. ⭐️ Loki , ELK , and SPLUNK. 𝐃𝐚𝐭𝐚 𝐌𝐚𝐧𝐚𝐠𝐞𝐦𝐞𝐧𝐭 𝐚𝐧𝐝 𝐐𝐮𝐚𝐥𝐢𝐭𝐲: ⭐️ Data Studio/Data Fusion/Data Flow: Proficient in data management and quality with Google Data Studio, ⭐️ Data Fusion, and Data Flow. ⭐️ Collibra/Alation: Skilled in data governance and cataloging with Collibra and Alation. 𝐈𝐦𝐚𝐠𝐞 𝐚𝐧𝐝 𝐕𝐢𝐝𝐞𝐨 𝐏𝐫𝐨𝐜𝐞𝐬𝐬𝐢𝐧𝐠: ⭐️ Verification via Camera/ID Image Processing: Skilled in image and video processing for identity verification. Let's connect and discuss the requirements you have at hand.
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    Data Scraping
    Grafana
    Vue.js
    Snowflake
    Node.js
    CI/CD
    React
    BigQuery
    NoSQL Database
    Data Science
    Data Analysis
    Kubernetes
    MongoDB
    Python
    Django
  • US$30 hourly
    Hi, I have been working full-time remotely as a technical support specialist since 2015. I am proficient in French, Italian, and English, and can provide support via phone, chat, and email in these languages. I am passionate about learning new skills, particularly in Cybersecurity, and I am actively seeking opportunities in this industry. I hold several IT certificates and have successfully contributed to various projects, all of which are detailed on my Upwork profile. Feel free to reach out if you'd like to chat and determine if we would be a good fit for a future collaboration. Have a great day!
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    Customer Service
    Tech & IT
    Customer Support
    Customer Care
    Online Chat Support
    Desktop Support
    In-App Support
    Desktop & Laptop Support
    End User Technical Support
    Helpdesk
    Technical Support
    Email Support
    English
    French
    Italian
  • US$50 hourly
    Graduate in Electrical Engineering. Expertise in computer networking, cloud computing, IT and automation. Certificattions: Passed: AZ-305: Microsoft Certified Microsoft Azure Solutions Architect Expert Passed: AZ-104: Microsoft Certified Microsoft Azure Administrator Associate Passed: Azure DevOps Assessment (18473) I am a certified and an experienced azure cloud achitect and devops engineer. I assist with azure administration, creating azure architecures, azure migrations and azure devops. I have subject matter expertise in designing cloud and hybrid solutions that run on Microsoft Azure, including compute, network, storage, monitoring, and security. Have advanced experience and knowledge across IT operations, including networking, virtualization, identity, security, business continuity, disaster recovery, data platforms, and governance. Azure government cloud, migration from on-premise to azure cloud, from classic to ARM, Azure Virtual Desktop setup on azure and Office365 administration. AWS EC2, Elastic Kubernetes Service (EKS), ECR, RDS, IAM polices, backup, workmail, lambda, Serverless architecture, AWS automation. IaaC using Terraform, ARM templates, cheff/puppet for Azure and AWS. Vultr, OVH and digital ocean cloud resources management. Windows, SQL, MySQL and MariaDB server administration. Expertise with Linux distributions Centos, Ubuntu and Debian Container Management, kubernetes, docker/LXC containers. Web hosting using plesk, cpanel, webmin, apache and nginx. Web automation using selenium and nextcloud administration. Odoo administration and desiging templates for data migration. VPN and Proxy server setup and configurations. IPv6 and IPv4 bulk proxies creation scripts on linux servers. Mail Servers setup for bulk email sending and for organizations. Automation Tools: PowerShell, puppet, chocolatey, ansible, terraform, python, batch and bash scripts.
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    Microsoft Active Directory
    Automation
    Kubernetes
    Azure DevOps
    IT Management
    Windows Administration
    Amazon Web Services
    Terraform
    Cloud Architecture
    Cloud Migration
    Linux System Administration
    Microsoft Azure
    Microsoft Windows PowerShell
    Bash Programming
    Docker
  • US$30 hourly
    I am a full-stack web developer with more than 7+ years of experience. My passion and drive are innovative, always being one step ahead within the field. I strive to be able to offer all services within the field and will do my best to help you. If you have any inquiries. Do not hesitate to contact me, I promise to make you satisfied with my work. Feel free to hire for: - Web Development + HTML, CSS, Javascript + ReactJS, Angular, VueJS, Redux, VueX, NextJs + NodeJS(Express, NestJs, Apollo GraphQL ....) + PHP (Laravel, WordPress, Drupal,...) + Python (Django, Flask,...) + Go (Echo, ...) + Docker - Database: MySQL, PostgreSQL, MongoDB - Amazon Web Services (EC2, Lambda, S3, DynamoDB, API Gateway, Cognito, Elastic Beanstalk, Amplify, Cloudwatch, ECR, SES, SQS, Cloudfront, Route53...) - Web Scripts - Stripe, Zoho Subscription - Troubleshooting and bug fix - API Development - OS: Linux, Windows, Mac OS X; - VCS: Git - Bug/Issue trackers: Jira, Redmine, Trello
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    Stripe
    NestJS
    PostgreSQL
    Next.js
    JavaScript
    Node.js
    MongoDB
    MySQL
    Vue.js
    React
    HTML
    CSS
    TypeScript
    GraphQL
    Amazon Web Services
  • US$60 hourly
    I am C and C++ expert in development for Linux, My main domain is computer networks: fast path, protocols. I am able to complete full cycle of development on server-side with high quality: from basic requirements to delivery with minimum supervision, including: requirement detailisation, planning, coding, debugging, deployment. I am strongest at: C,C++, Network Protocols, Python, Bash, Perl, TCL, Debugging, QT(PyQT), GNU tools, Golang Areas: Network protocols parsing and implementation Linux distributives customiztions Apache Modules Linux kernel modules Cloud computings Storage Systems
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    Computer Network
    Blockchain
    C
    Embedded Linux
    C++
  • US$60 hourly
    🛠️💻🖥️👨‍💻👨‍🎓 Hey, I'm Jay! I solve problems. | jaymath.is | github.com/mathiscode | | aige.games | web3os.sh | intellibrix.dev | imagined.quest | whogoverns.me | luna.moonlander.studio | **NOTE: I had Top Rated Plus status for years, however since I have been working fewer hours and for smaller clients, my account doesn't currently meet the "large contracts" threshold according to Upwork, so I have dropped back to simply Top Rated status** **NOTE: Although I have an Upwork "agency", I am the only member - I do not outsource any work and I charge my normal rate** [CORE BELIEFS] - I'm clear and honest in my business; I don't do shady things to risk my reputation - I strive to provide high value; I try to pack as much value to clients in as little time as possible - You don't need to hold my hand; I can likely understand your goals and will do what it takes to help you crush them - Mutual respect is required; the client-freelancer relationship is more B2B than superior-inferior - Cooperative vision makes good products; the client has the final say, but I believe in sharing ideas - Continuing education is crucial; I try to keep up with technology so I can provide the best results possible - I don't gatekeep knowledge; I want my clients to understand their codebase as much as they're comfortable with - Reasonable response times; a common problem with certain freelancers is they disappear - I won't - Future-proof development; life is uncertain, so I try to develop and document codebases in a way that is easy for others to understand if I "involuntarily disappear" [EDUCATION] - Western Governors University, Bachelor of Science, Software Development - Obsession that started with BASIC on the TRS-80 in 1992 [CERTIFICATIONS] - CIW User Interface Designer - CIW Site Development Associate - CIW Advanced HTML5 & CSS3 Specialist - CompTIA A+ - CompTIA Project+ - ITIL v4 Foundation [SOLO PROJECTS] - AIGE; AI Game Engine (aige.games) - Intellibrix; a software component framework that uses self-contained AI-powered Bricks (intellibrix.dev) - AI Kernel Explorer; a TUI to browse AI-generated summaries of the Linux source tree - Web3os; a browser-based experimental operating system (web3os.sh) - Imagined Quest; an AI-powered text-adventure game (imagined.quest) - WhoGovernsMe; a website to view information about political representatives (whogoverns.me) - Moonlander Luna; a React dApp boilerplate application (luna.moonlander.studio) - See more in my portfolio [CLIENTS] - BeyondCAD.com - Sizle.io - DatasheetSolutions.com - Design Emporium, LLC - National Young Farmer's Coalition - Cybersemics Institute - Politarian.com - JewishMusic.fm - NFTWorld.io - MetaverseChat.io - See more in my reviews/testimonials [HIGHLIGHTS] - 25 years Linux experience - 20 years HTML/CSS/Javascript experience - (to include vanilla, Typescript, Node.js, Deno, React, Vue, Svelte, Angular, jQuery, and other frameworks/libraries) - 15 years database experience - (to include MySQL, SQLite, Postgres, MongoDB, CouchDB, Redis, Firebase Firestore/RTDB, and other database technologies) - 15 years API integration experience - (to include REST, SOAP, GraphQL, and other API technologies) - 15 years PHP experience - (including CMS such as Wordpress, Concrete5, Drupal, and Joomla) [DEVOPS] - AWS - Digital Ocean - Heroku - Google Cloud - Firebase/Supabase/Pocketbase - Vercel - Netlify - Fleek - Hostgator, Bluehost, Siteground, miscellaneous shared/VPS/dedicated providers [MY DIFFERENCE] My business is solving your problems. I bring a diverse set of skills to manage nearly any IT problem. I don't claim to know everything, but I've always been tenacious and I won't stop until I figure it out. Hiring a developer can be a gamble sometimes if you're not careful - low-cost developers entice potential clients with low budgets and promising they can do anything. What they're after is just the job, not necessarily making your project succeed. If a freelancer charges a low rate and seems to have plenty of time available, there's probably a reason. A good freelancer will be upfront if something is outside of their skillset or if they can't fit the project in their schedule, and is careful not to overpromise. Wasting a client's time and money to deliver low-quality results isn't a sustainable business. If your project uses some technology I'm unfamiliar with, I generally don't charge for the time spent educating myself on it. I like learning new things, and it may be useful to know in the future. Whether you need a brand new application, bugfixing/refactoring a legacy codebase, website/CMS management, Linux/Windows server administration, or anything else involving software, check out my profile details and my portfolio of work to see if I might be a good addition to your project! [NOTICES] - I am happy to sign an NDA for your project if required! - I'm a native English speaker, if you consider what the southern states speak to be English 😅
    vsuc_fltilesrefresh_TrophyIcon Open Source
    ChatGPT
    PHP
    WordPress
    Blockchain
    web3.js
    MongoDB
    Node.js
    React
    ExpressJS
    Material Design
    Web Design
    Solidity
    JavaScript
    React Native
    Smart Contract
  • US$40 hourly
    I am a highly experienced data science freelancer with over 20+ years of experience in the field. Throughout my career, I have developed a deep understanding of the principles and techniques of data science and have applied this knowledge to a wide range of projects. With a strong background in data analysis, machine learning, deep learning, and statistical modeling, I am able to quickly and accurately extract insights from large and complex datasets. My expertise in programming languages such as Python, R, and SQL enables me to implement these insights in a scalable and efficient manner. In addition to my technical skills, I have a passion for using data science to drive business results. I have worked with a wide range of organizations, from startups to large corporations, and have helped them to use data to inform their decision-making, optimize their operations, and achieve their strategic goals. I am a self-starter and have a strong work ethic. I am able to work independently or as part of a team and I have excellent communication skills, which allow me to effectively collaborate with stakeholders at all levels of an organization.   I have worked on various engagements across multiple domains for solving numerous problem statements including: Telecom:  -Worked on Churn use case for the largest cellular company in the United States, analyzed their customer survey data, feedbacks, social media data to determine the customer experience and customer sentiments, demand identification and forecasting based on customer service records and customer engagement in different services, recommendation and planning of the marketing campaigns, offers and new personalized packs for customers based on customer history. Automotive: -Designed and deployed an automated application for a leading automotive testing company through which the client can see the machine failure prediction before time. The application also visualizes the predicted parameter values over time with graphs, data tables, and also the possible causes and remedies regarding the errors.   -Worked on Paint shop defects analysis for the World’s largest car manufacturer BFSI: -Worked with asset management firms, investment management organizations, and developed solutions for fraud detection, fraud prediction, and credit risk analysis, stock prediction, investment planning, investment portfolio analytics. -Developed an accurate Cryptocurrency prediction model that can predict the hike and drop/crash of various coins, based on the historical data, social media data and market research data. NLP/Chatbots: -Developed Real-time Chatbot applications with . -Developed Custom NER Model for entity recognition. Logistics: -Conceptualized and implemented Route optimization algorithms for Transportation and Logistics companies, for identifying the best route and used a variety of customer data feeds and a complex optimization algorithm to compute and recommend the best route for fuel savings. Healthcare: -Developed and optimized novel deep learning-based approaches to automate many aspects of medicine, including; disease diagnosis, and preventative medicine. -Created a deep learning neural network that can process the MRI, PET-FDG, Amyloid and Tau image data from the ADNI database and developed a classification and prediction model to predict the Alzheimer's Disease.
    vsuc_fltilesrefresh_TrophyIcon Open Source
    Operations Research
    Artificial Intelligence
    Data Visualization
    Data Analysis
    Statistical Analysis
    Optimization Modeling
    AWS Application
    Large Language Model
    Generative Model
    Natural Language Processing
    Deep Learning
    Machine Learning
    Chatbot
    Python
    Data Science
  • US$35 hourly
    I'm Top Rated with 100 % JSS Magento and Adobe Commerce certified developer with over 16 years of experience in the E-commerce industry. I specialize in Magento development and have a proven track record of delivering high-performance eCommerce solutions for clients. Whether you need assistance with Magento 1 or Magento 2, I have the expertise to create seamless and scalable online shopping experiences. Services I offer: 1. Magento Development: - Magento 1 and Magento 2 || Adobe Commerce 2. Development Environment: - Magento Cloud || Magento Commerce || Magento Open source 3. Themes and Templates: - Theme development || Customization || Integration 4. Extension and Module: - Extension development || Customization || Magento Marketplace 5. eCommerce Features: - Product Catalog || Shopping cart || Payment Gateway Integration 6. Custom Development: - Module development || Checkout customization 7. Internationalization: - Multi-language stores || Currency support || Region-specific content 8. Payment Gateways: - PayPal || Stripe 9. Integration: - Amazon, eBay integration || CRM/ERP integration Why Choose Us: By choosing us as your development partner, you'll benefit from: *Exceptional Quality: Our team of Adobe Certified Magento experts ensures top-notch work. *Conversion Rate Optimization: We focus on improving your website's conversion rates. *Debugging and Bug Fixing: We are meticulous in identifying and resolving issues. *24/7 Support and Maintenance: We offer round-the-clock support for your peace of mind. *Speed Enhancements: We optimize your website for lightning-fast performance. **Let's Get Started** I'm eager to bring my expertise to your eCommerce project and help you achieve your business goals. Whether you're looking to develop, enhance, migrate, or upgrade your Magento-based website, I'm here to create a compelling online shopping experience for your customers. Reach out today to discuss your project requirements, and let's turn your eCommerce vision into reality.
    vsuc_fltilesrefresh_TrophyIcon Open Source
    AJAX
    JavaScript
    GitHub
    Conversion Rate Optimization
    Adobe Photoshop
    HTML5
    Ecommerce Performance Optimization
    Extension & Module Development
    Ecommerce Backup & Migration
    Ecommerce Development Consultation
    Solution Architecture
    Optimize Ecommerce Site
    Ecommerce Website Development
    Magento 2
    Magento
  • US$40 hourly
    Looking to implement end-to-end AI solutions or streamline your workflow? I've got you covered! I'm a Machine Learning engineer with a strong mathematical background and a Master's degree in Data Science. My expertise encompasses: • Natural Language Processing (NLP): Translation, Summarization, Text-to-Speech (TTS), Topic Modeling, Sentiment Analysis, Entity Recognition, and QA Bots. • Computer Vision: OCR (Optical Character Recognition), Object Detection, Image Segmentation, Image Classification, and Image Enhancement. • Time Series Analysis and Forecasting. • Recommendation Systems. Need to migrate your models between deep learning frameworks? I'm an expert in: • TensorFlow (both tf 1.x and 2.x). • PyTorch. If you're constrained by machine learning libraries, I can assist with: • Keras. • OpenCV. • Scipy. • NLTK Toolkit. • Scikit-learn. • Pandas. Looking to explore different deep-learning architectures? I can guide you through: • Convolutional Neural Networks (CNN), including R-CNN variants. • Sequence Models (LSTM, GRUs). • Attention Networks (Encoder-Decoder, Transformers). • Generative Adversarial Networks (GANs). • Graph Neural Networks. • Reinforcement Learning (RL) Networks. Don't have the data you need? I can scrape it for you using: • Scrapy. • Selenium. • Beautiful Soup (bs4). Want to deploy your deep learning system on the cloud? I can handle that too, whether it's on: • Amazon Web Services (AWS). • Google Cloud Platform (GCP). Let's turn your AI ambitions into reality!
    vsuc_fltilesrefresh_TrophyIcon Open Source
    OCR Algorithm
    Time Series Analysis
    Data Science
    PyTorch
    OpenCV
    Neural Network
    TensorFlow
    Keras
    Deep Learning
    Classification
    Natural Language Processing
    Computer Vision
    Convolutional Neural Network
    Deep Neural Network
  • US$18 hourly
    🙋🏻‍♂️ Hello! I’m Khiroda, your go-to Backend Developer with over 10 years of experience delivering clean, maintainable, and high-performing code that drives business success. Whether you're enhancing existing systems or building from the ground up, I’m here to help you meet and exceed your business goals. Why Choose Me? ⏩ Proven Success: With over 2,000 hours on Upwork, I’ve earned a reputation for reliability, timeliness, and delivering high-quality work. Clients trust me to get the job done right. ⏩ Backend Expertise: I specialize in PHP frameworks like Laravel, Symfony, and CodeIgniter, and excel in creating RESTful APIs, integrating payment gateways, and ensuring robust backend functionality. ⏩ Database Mastery: MySQL, MariaDB, MSSQL, PostgreSQL—I've got you covered. I ensure your data is efficiently managed, secure, and optimized for performance. Technologies I Master: 🏅PHP: Proficient in versions 5.6 to 8.3, ready to tackle any backend challenge. 🏅Laravel: Expertise from versions 5.x to 10.x, implementing best practices and cutting-edge solutions. 🏅Symfony: Skilled in versions 3.4 to 6.3, building high-performance applications tailored to your needs. 🏅CodeIgniter: Offering robust, scalable solutions across versions 1.x to 4.x. My Development Approach: ♦️ Object-Oriented Programming (OOP): I focus on the MVC design pattern to deliver scalable, maintainable solutions. ♦️ Committed Availability: I’m ready to invest over 40 hours a week to ensure your project’s success, with a focus on timely delivery and open communication. Industries Served: ⭐ E-commerce Platforms: Building robust, secure online stores. ⭐ Financial Services: Developing secure, scalable financial applications. ⭐ Healthcare IT: Creating HIPAA-compliant applications that meet industry standards. ⭐ Education: Developing scalable LMS and educational tools. ⭐ Telecommunication: Building systems to enhance communication services. ⭐ Real Estate: Creating dynamic platforms for property management and sales. ⭐ Travel & Hospitality: Developing solutions to enhance customer experiences. My Skills: Backend Developer | PHP Developer | Laravel Expert | Symfony Developer | CodeIgniter Specialist | RESTful API Development | Payment Gateway Integration | MySQL | MariaDB | MSSQL | PostgreSQL | Object-Oriented Programming (OOP) | MVC Design Pattern | Web Development | Database Optimization | E-commerce Development | Financial Technology (FinTech) | Healthcare IT Solutions | Education Technology (EdTech) | Real Estate Platforms | API Integration | Secure Web Applications | Cloud Integration | Agile Development | Continuous Integration/Continuous Deployment (CI/CD) | Version Control (Git) | Microservices Architecture | Scalable Solutions | Performance Optimization | Server-Side Programming | SaaS Development | High Availability Systems Reach out today, and let’s create something amazing together! ✌️
    vsuc_fltilesrefresh_TrophyIcon Open Source
    HTML
    Bootstrap
    Microsoft Azure
    Amazon Web Services
    Back-End Development
    Database
    CMS Development
    Web Development
    WordPress
    AngularJS
    Vue.js
    CodeIgniter
    Symfony
    Laravel
    PHP
  • US$35 hourly
    5 years years experience on China digital marketing,eCommerce marketing and market research, including WeChat, Weibo marketing,China social media marketing, Baidu PPC,SEO, content writing for small businesses, eCommerce, B2B and startups. If you are interested in doing market research on Chinese market, or want to enter China market, I will help you setup and optimize funnels and campaigns that will generate a flow of consistent traffic, leads and sales for your business. Professional Highlights: **Digital Marketing/eCommerce Marketing** --Social Media Marketing (SMM)(WeChat, Weibo, QQ, Douyin, Youku Marketing etc) --Pay Per Click (PPC) Marketing - Focused Exclusively on Baidu --Search Engine Optimization (SEO) --Web Analytics --E-commerce Project Marketing & Management (Taobao, Tmall, JD,Aliexpress,Alibaba,Ping Duo Duo etc) --Execute Creatives and Launch Campaigns **Marketing** --Digital Marketing(WeChat, Weibo, QQ, Youku Marketing etc) --Telemarketing/Cold Calling --Distribution / Sales Channel Build Up --Lead Generation --Email Marketing Writing --Exhibition Marketing --Business Development **China Market Research** --Desktop Research --Market Analysis --Consumer Research --Qualitative and In-depth Interviews --Mystery Shopping Research **Copywriting** --Web Writing --Content Strategy --Blog Writing --Weibo Writing --WeChat Writing --Email Marketing --Social Media Marketing
    vsuc_fltilesrefresh_TrophyIcon Open Source
    Market Research
    Business Consulting
    Digital Marketing Strategy
    Social Video Marketing
    Content Localization
    Search Engine Optimization
    Content Writing
    Social Media Marketing
  • US$10 hourly
    I have 3+ year of experience in Technical support for one of the largest corporations in world and providing technical support to one of the biggest retailing corporation. Beside technical support i am a beginner in programming, interested in Java, Java Script, HTML5, CSS and data bases. Highly familiar with Windows operating system and Unix with desire to upgrade my knowledge in many different directions. Always ready for new challenges and ready to provide the highest quality of work in any project i encounter.
    vsuc_fltilesrefresh_TrophyIcon Open Source
    Phone Communication
    Technical Support
    Microsoft Office
    Helpdesk
    Translation
    Computer Network
    Email Communication
    Customer Service
    Customer Support
  • US$50 hourly
    My professional career started in a big software company as an automotive embedded engineer. I was working as a maintainer of drivers for ethernet chips. I have done lots of hobby projects on Arduino, raspberryPi nodeMCU, esp8266, mbed and STM. I am doing both software and hardware for all my projects. I have 5+ years of experience working as a Lead Software Engineer in the SmartHome sector. I was developing drivers for Zigbee, Mqtt, HomeAssistant, etc. Working in C, C++, Python, Golang and Bash. I was also maintaining and improving build system automation. Making it both easier to use, more versatile and time-saving. I was working with Buildroot and Yocto.
    vsuc_fltilesrefresh_TrophyIcon Open Source
    Bash
    GoCD
    Golang
    Build Automation
    Linux
    Smart Home Framework
    Automation
    Python
    C++
    Embedded C
    Raspberry Pi
    C
    Embedded Linux
    Arduino
  • US$30 hourly
    💡️ Experience of delivering numerous projects with excellent client feedback 💡️ 15 years of professional experience 💡️ Strong problem-solving skills 💡️ Good development practices 💡️ Excellent ability to find the best tool to solve the problem in hand I am a full-time software engineer, with 14+ years of experience in working with Data mining, Web development, Automation, High Performance Computing, and many other fields. I enjoy challenges, and work hard to solve it using my resourcefulness, a keen eyes for patterns, and the ability to sticking to the problem. Besides developing few hundreds of data mining applications, automation tools, Websites, I have personal interest in Open Source projects, and have been contributing to many Here's a list of, but not limited to, responsibilities I have successfully fulfilled: ◾️ High Performance computing applications ◾️ Distributed applications ◾️ Web Scrapers ◾️ Data Extraction, Transformation, and Load ◾️ Code generation ◾️ Automation ◾️ Desktop application ◾️ Web development ◾️ Server configuration and deployments ◾️ Bug fixing and code improvements ◾️ Machine Learning My target is to provide you, the client, a complete product, that is cleanly crafted for your need, with industry standard development practices. Let's get in touch.
    vsuc_fltilesrefresh_TrophyIcon Open Source
    WebAssembly
    PDF Conversion
    Vue.js
    Bot Development
    React
    Java
    RESTful API
    Web Application
    Spring Framework
    Django
    Rust
    Python
    Scripting
    Data Mining
  • US$150 hourly
    Expert Vetted (top 1%) with 7 years of experience participating in all aspects of the complete software development lifecycle. My area of expertise is software architecture in diverse development platforms and leading development teams from concept to launch. I have • Led a team to rewrite a legacy monolith to modern stack microservices for a health and fitness startup. • Worked as a director of engineering for a NFT issuance and marketplace platform. • Built a prototype using AR kit for IOS • Done Metamask integration using web.js, solidity smart contract development, integration with crypto wallets on various websites • DevOps – build pipelines and server setup • Built algorithms for allocation of issuances and handling of issuance lifecycle for Sukuk Bonds. • Built a custom cloud-based KYC solution • Ensured 95% code coverage using mocha/chai/supertest • Automated data extraction processes for excel based reports • Built reusable components and front-end libraries for future use • Translated designs and wireframes into high quality code • Worked on multiple mapping solutions including google maps and ArcGIS/Esri I started working professionally during the last year of college and achieved the Top Rated Badge at Upwork before I graduated. SKILLS Here is a list of some of the languages/ platforms I have used in various projects. This is not an exhaustive list, so please contact me for details of my work in any other tech stacks • Node JS • React JS/Next.JS • Esri/ArcGIS • Postgre Sql • React-Native • Ruby on Rails • Flutter • Javascript • Angular • MongoDb • Shell Scripts * CI/CD Pipelines • Firebase • Mongoose • Android • Cordova • HTML • CSS • PHP • Java • DApp Development • Metamask • Smart contracts. • Python • .Net Core/web api • XML • Qt • Wt • Sqlite • Oracle10g • GitHub • Bitbucket • GitLab. • Zeplin • Invision • Figma • C • C# • C++
    vsuc_fltilesrefresh_TrophyIcon Open Source
    Golang
    Rust
    Blockchain Architecture
    Java
    React Native
    Android
    API
    Software Architecture & Design
    Database Architecture
    GraphQL
    React
    Node.js
    DevOps
    C#
    PHP
  • US$25 hourly
    👍 Total I have seven years of experience working with startups and reputed brands. 🙋‍♀️ PHP 8.1. / 7.4 / | JavaScript | HTML 5 | CSS3 | Figma to HTML 🙋‍♀️ Laravel | Nova | Yii | Yii2 🙋‍♀️ API Integration | Custom API | Stripe | PayPal | Braintree | and Many More 🙋‍♀️ CMS | WordPress / Apppresser plugin 🙋‍♀️ GrapesJS | PageBuilder 🙋‍♀️ LAMP Stack 🙋‍♀️ ERP Integration
    vsuc_fltilesrefresh_TrophyIcon Open Source
    MySQL Programming
    PSD to HTML
    MVC Framework
    Yii2
    GitHub
    Database Development
    JSON
    Web Application
    HTML5
    React
    PHP
    AJAX
    Laravel
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How to Hire Top Open-Source Developers

How to hire open-source developers

It may seem counterintuitive to release your intellectual property to the masses for free, but open sourcing your software can help you attract top talent, bolster your branding, help your product gain market share as a platform, and leverage the collective experience of a global community of passionate developers.

So how do you hire open-source developers? What follows are some tips for finding top open-source consultants on Upwork.

How to shortlist open-source development professionals

As you’re browsing available open-source development consultants, it can be helpful to develop a shortlist of the professionals you may want to interview. You can screen profiles on criteria such as:

  • Technology fit. You want an open-source developer who understands the technologies you wish to open source.
  • Project experience. Screen candidate profiles for specific skills and experience (e.g., open sourcing a Python machine learning library on GitHub).
  • Feedback. Check reviews from past clients for glowing testimonials or red flags that can tell you what it’s like to work with a particular open-source developer.

How to write an effective open-source development job post

With a clear picture of your ideal open-source developer in mind, it’s time to write that job post. Although you don’t need a full job description as you would when hiring an employee, aim to provide enough detail for a contractor to know if they’re the right fit for the project.

Job post title

Create a simple title that describes exactly what you’re looking for. The idea is to target the keywords that your ideal candidate is likely to type into a job search bar to find your project. Here are some sample open-source development job post titles:

  • Need help open sourcing our material component library for Vue.js
  • Need help managing an open-source C++ library on GitHub
  • Building an open-source image-recognition library with TensorFlow

Open-source development project description

An effective open-source job post should include: 

  • Scope of work: From GitHub listings to feature development, list all the deliverables you’ll need. 
  • Project length: Your job post should indicate whether this is a smaller or larger project. 
  • Background: If you prefer experience with certain industries, software, or developer tools, mention this here. 
  • Budget: Set a budget and note your preference for hourly rates vs. fixed-price contracts.

Open-source developer responsibilities

Here are some examples of open-source developer job responsibilities:

  • Design and develop open-source software
  • Host and maintain open-source projects on a remote repository (e.g., GitHub, Bitbucket, GitLab)
  • Write and maintain open-source documentation (e.g., README, contributing guidelines, code of conduct)
  • Monitor and handle bug reports, feature suggestions, contributor comments, and questions 

Open-source developer requirements and qualifications

Be sure to include any requirements and qualifications you’re looking for in an open-source developer. Here are some examples:

  • Application-specific programming language (e.g., C# for ASP.NET) 
  • Software development methodologies (e.g., Agile, Scrum, XP)
  • Familiarity with the SDLC (from requirements gathering to deployment and maintenance)
  • Code documentation

Open-Source Developers FAQ

What is open-source development?

Open-source development is the practice of releasing software source code to the public. Source code released under an open-source license can legally be inspected, copied, shared, altered, and extended by anyone who follows the terms of the open-source license agreement. 

More broadly, open source reflects an altruistic philosophy of collaboration and sharing, permitting people to modify source code and incorporate those changes into their own projects. 

How much does it cost to hire an open-source developer?

The first step to determining the cost to hire an open-source developer will be to define your needs. Rates can vary due to many factors, including expertise and experience, location, and market conditions.

Cost factor #1: project scope

The first variable to consider when determining scope is the nature of the work that needs to be completed. Not all open-source projects are created equal. Open-sourcing a simple web service will typically take less time than launching a new open-source web development framework. 

Tip: The more accurately your job description describes the scope of your project, the easier it will be for talent to give you accurate cost estimates and proposals.

Cost factor #2: open-source developer experience

Choosing the right level of expertise for the job is closely tied to how well you determined the scope of your project. You wouldn’t need an advanced programmer to maintain the code documentation and maintenance of your open-source project listing on GitHub. On the other hand, building an open-source software development platform from scratch will require a skilled programmer. 

Beyond experience level, you need to consider the type of experience the talent possesses. Generally speaking, an open-source developer is any developer familiar with the process of hosting a project on a remote repository such as GitHub, GitLab, or SourceForge. The following table breaks down the rates of the typical types of open-source developers you can find on Upwork. 

Rates charged by open-source developers on Upwork

Type of Developer

Description

Hourly Rate

Web development

Front-end development (e.g., HTML, CSS, JavaScript). Back-end development (e.g., databases, web servers, cloud storage). Experience with CMSs (e.g., WordPress), JavaScript frameworks (e.g., React), and/or app-specific frameworks (e.g., WooCommerce).

$30-120+

Mobile development

iOS app development (e.g., Swift, Objective-C, Xcode, Cocoa Touch). Android app development (e.g., Java, Kotlin, Android SDK, Android Studio). Hybrid app development (e.g., Flutter, React Native, Ionic).

$30-120+

Embedded systems

Programming languages (e.g., C, C++, Rust). Experience programming microcontrollers (e.g., Arduino), microcomputers (Raspberry Pi), and other hardware. Robotics, IoT, and operating-system-level code. 

$50-120+

Cost factor #3: location

Location is another variable that can impact an open-source developer’s cost. It’s no secret that you can leverage differences in purchasing power between countries to gain savings on talent. But it’s also important to factor in hidden costs such as language barriers, time zones, and the logistics of managing a remote team. The real advantage to sourcing talent remotely on Upwork is the ability to scan a global talent pool for the best possible person for the job. Location is no longer an obstacle. 

Cost factor #4: independent contractor vs. agency

The final variable regarding talent cost is hiring an independent contractor vs. an agency. An agency is often a “one size fits all” model, so you’ll often have access to a designer, a project manager, an engineer, and more. When hiring individuals you have total autonomy regarding who is responsible for which part of the project, but you’ll need to source each of those skills separately.

The trade-off between hiring individuals vs. hiring an agency is the level of administrative overhead you incur personally in coordinating tasks among all members of the team. Project scope and personal preference will determine which style is a better fit for your needs.

Open-Source Developer Tips and Best Practices

Choose the right open-source license for your needs

MIT, Apache 2.0, and GPLv3 are examples of other open-source licenses. Using a license is as simple as copy-and-pasting it into your repository. Open-source licenses differ from typical intellectual property licenses in that their goal is to help others contribute to and use your work without needing to seek special individual permission to do so. That said, these licenses still place restrictions on how source code can be copied, used, and distributed, usually to discourage abuse of the open-source license (e.g., someone charging others for free code you developed). 

For example, the GNU General Public License (GNU GPL) allows unlimited copying, distribution, and changes to the source code. You can even charge someone for software built partially with technologies open sourced under the GNU GPL, but only if you provide a copy of the GNU GPL so that others can see which part of your code is technically open source and available for free. This also gives you a chance to justify why you’re charging for your fork of the original source code. 

Write clear contributing guidelines

Maintaining an open-source project on a remote repository will of course become more challenging as more people become interested in your project. It helps to have clear guidelines for how developers can contribute to your project. You can include these guidelines in a README file along with your project description or in a separate CONTRIBUTING file. 

Contributing guidelines should communicate expectations for contributors such as:

  • Procedure for submitting a new feature suggestion
  • Bug report best practices
  • How to set up a test environment for a new feature
  • Types of contributions you’re looking for
  • Project roadmap
  • Contact information

The more detailed your CONTRIBUTING file, the easier it will be to manage your open-source project. 

Don’t forget to include a code of conduct

If your goal is to build a community around your open-source project, adopting a formal code of conduct can go a long way toward encouraging the type of behavior you wish to see within this new community. 

A code of conduct usually provides guidelines for how contributors and community members should interact with one another. You can establish community standards such as:

  • Demonstrating empathy and kindness toward others
  • Offering constructive criticism and receiving it gracefully
  • Abolishing derogatory language and harassment 

A code of conduct will give you a handy tool to use to moderate discussions about your project in your online communities. You can enforce it by banning offenders and removing comments on the grounds of violating your code of conduct. 

Don’t want to write your own code of conduct? There are plenty of drop-in open-source code of conduct documents available on the web (e.g., Contributor Covenant, Citizen Code of Conduct). Copy and paste the one that best suits your needs. 

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