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
  • $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
  • $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
  • $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#
  • $35 hourly
    👋 Hi, I'm Mark, the tech and business-savvy CEO and CTO at Pinely. I got both the code and the boardroom. My edge? I'm in every client interview, actually listening to you. I'll recommend not just any solution but the right one—along with the devs, to make it happen. How Pinely Helps 🛠️ Custom Development: With know-how in MERN, Typescript, React Native, Python, and AWS, we make your project fast and flawless. 👥 Team Extension: Need more talent? Our devs integrate seamlessly like they've been with you from the start. 📊 IT Consulting: We guide you toward savvy tech decisions and peak system performance. 📝 ERPNext: From invoice tweaks to sharp reporting, we make ERPNext work for you. What Clients Say Don't just take my word for it: "Pinely delivers on promises." "The Pinely project manager really cares about our project." "Working with Pinely, we've achieved big things." David Ritter, CEO of Privacy Lock, adds: "Pinely brings something special in terms of design thinking and interfaces to improve user experience. They work efficiently, with good communication and transparency. They brought great expertise in different parts of the development cycle and made our dashboards more commercial." Let's Connect Ready to make tech and business click? I'd love to chat. Let's figure out how Pinely can make your tech journey a seamless success. Cheers, Mark 🌲
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    SQL
    Redux
    Node.js
    Agile Project Management
    React
    Auth0
    MongoDB
    Elasticsearch
    Telegram API
    JavaScript
  • $90 hourly
    Top 1% Freelancer: Upwork has awarded this freelancer the Expert Vetted Badge! Blockchain | AI | Mobile Co-Founder @InMindSoftware | CTO @ TIEX Tech enthusiast, always looking to enhance and activate businesses for my customers through new technologies, especially blockchain, AI, and mobile. Amateur runner. Our team enjoys doing great work and forming long-term partnerships with our clients. We love innovation and working hard to solve problems that others cannot.
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    Blockchain
    Mobile App Development
    Android App Development
    iOS Development
    Kotlin
    Java
    Amazon Web Services
    Swift
    Node.js
    Objective-C
  • $35 hourly
    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 / SurferSEO ⌨️ 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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    Proofreading
    Podcast Show Notes
    Scriptwriting
    Product Description
    IT Infrastructure
    On-Page SEO
    SEO Keyword Research
    SEO Content
    Article Writing
    Blog Writing
    Copywriting
    SEO Writing
    Content Marketing
    Technical Documentation
    Technical Writing
  • $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
  • $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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    Shopify
    Shopify Apps
    Gmail
    Customer Service
    Technical Support
    Helpdesk
    Online Chat Support
    Email Support
    Zendesk
  • $89 hourly
    🏆 Top Rated UpWork freelancer 🕓 9000+ hours worked ⭐ 5-star feedback ☑️ Verified portfolio I work regularly across all the cloud platforms (AWS, GCP, Azure) designing and building scalable efficient infrastructure. I mainly work using AWS, using Lambda, DynamoDB, EC2, ECS, RDS, EKS, Cognito, AppSync, Amplify. I also have experience in NodeJS, Javascript, and front-end development primarily using React & Angular. I'm very familiar with RESTful & GraphQL APIs either integrating them or building them out to integrate other services. In addition to deploying & managing containerised applications using Kubernetes.
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    Next.js
    Front-End Development
    Full-Stack Development
    AngularJS
    Amazon EC2
    React
    NoSQL Database
    HTML
    Back-End Development
    SQL
    TypeScript
    Node.js
    Python
    JavaScript
  • $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
  • $35 hourly
    ⭐⭐⭐⭐⭐ I've worked in Information Technology for over 20 years. I am excellent at: ✅ Technical Project Management ✅ Agile Methodologies ✅ Cloud Architecture (specializing in AWS) ✅ Technical Writing Currently, I hold a pivotal role as a Senior Technical Project Manager in a leading multinational software firm. My goal is to collaborate with forward-thinking clients and drive projects that align with their vision and business objectives.
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    Project Management
    Lean Manufacturing
    Cloud Architecture
    Leadership Skills
    Kanban Methodology
    Cloud Services
    Amazon Web Services
    IaaS
    Scrum
    Technical Documentation
    Software Architecture & Design
    Cloud Security
    Team Management
    Agile Software Development
    Technical Writing
  • $60 hourly
    I am web/mobile developer, with over 10 years of experience in Unix system and network administration and PhD in Physics and Mathematics from Novosibirsk state university. I'm experienced in many operations systems, network devices, development frameworks, technologies and databases. - Programming languages: Java, JavaScript, ES6, Typescript, Kotlin - Java persistence: Hibernate, Apache Cayenne, Spring Data JPA - Blockchain: Ethereum, Solidity smart contracts, ICO, Airdrop - Databases: DB2, PostgreSQL, MySQL - Mobile: React Native, NativeScript - Fronted: Angular, RiotJS, React, Qooxdoo, css, scss, less - OS: Ubuntu, Debian, RedHat - Software: Apache Httpd, Nginx, Puppet, Nagios, Cacti, KVM/VmWare/OpenVZ, Exim/Postfix/Zimbra - Network: Cisco, HP, Allied Telesis
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    Ethereum
    Linux System Administration
    Unix System Administration
    web3.js
    TypeScript
    Java
    JavaScript
    Node.js
  • $30 hourly
    To deliver high quality software which meets user implicit & explicit requirements by employing preventive methods. I have opted software testing as my career not because I got the opportunity to work but I am in software testing because I believe Software Testing as "Destructive Creation" and I enjoy finding issues by hook or by crook. I am not only a tester who can do just some testing work and report issues, I can also help you in Implementing Test process, Automation tool selection, QA documentation and can provide end to end solution on all types of testing. "Has an attitude of 'test to break", "diplomatic attitude when communicating with co-workers and developer", "Ability to think as end user/customer perspective", " Judgement skills are needed to assess high-risk areas first" and last but not the least "A strong desire for quality, and an attention to detail." are the qualities of good software tester. I have expertise in Manual, Automation, Performance, Security, Mobile, Database and Whitebox testing. The detail experience is mentioned below - Manual testing - Functional, Non-functional, Sanity, Smoke, Regression, Acceptance, Browser Compatibility, Device Compatibility, Platform Compatibility, Black Box testing, Static testing, Dynamic Testing. -Requirement analysis -Test case designing -Test execution and defect reporting -Test verification and end to system testing -Test release. Automation Testing - -JavaScript Automation framework - -WebdriverIO -Jest -Cypress -Protractor -Nightwatch -Detox -Mocha, Jesmin, Chai - Wdio Appium Non-JavaScript Automation framework - -Selenium WebDriver -Cucumber -Specflow -Bahat -Appium -TestNG -Junit -Nunit -Selenium IDE, RC -QTP -Test Complete -Katalon Studio -UFT Python Automation Framework - -Pytest -Seleniumbase.io API Automation - -Java Script - Supertest, Mocha , Chai - Pytest, Request Lib -Rest Assured, Cucumber Performance testing Tools - JMeter, LoadRunner, NeoLoad. Database Testing - ETL Validator, Custom ETL Test Framework, SQL, My SQL, Oracle, Sybase, Microsoft SQL Server, SAP. Security Testing - OSWAP ZAP, SQL MAP. Whitebox Testing - Code Review, Code Deployment. Continuous Integration - Jenkins, Team City, Azure DevOps, Circle CI Testing Compliances - HIPPA, WCAG Level A, WCAG Level AA. Special Testing - Cookie Testing, Overlays Testing, Accessibility Testing (WCAG A, AA) Language - Java, JS, C#, PHP, .Net, Node.js Testing Methodologies – Agile, Waterfall, Spiral. Testing Documents - Test Plan, Test case Sheet, defect reports, Requirement Traceability Matrix, Risk assessment, Test Strategy document, Testing checklist, Test Summary, Use Case document, Requirement document, User Manual, Training material. Project Management and Defect Reporting Tools - JIRA, Bitbucket, Mantis, Trello, JAMA, Monday.com, Redmine, YouTrack, ScrumDesk, Asana, TestRail, Basecamp, Bugzilla, Clocking IT, Team Foundation Server (TFS), TestLink, ActiveCollab, TestLodge, Zephyr. Business Domain- Healthcare, E-commerce, E-learning, Social Networking, SaaS, PaaS, CRM, Survey, Games, Accounting, IT-Networks, Cloud computing, E-Education, Retail, Advertisement, Hotel Management, Finance, Forex, Trading, Stock Exchange, Real Estate, Insurance, Payment technology, Food Industry, Business Appointments, Timesheet and Schedule, Loan if you are looking for above abilities and qualifications then I can assure you that I best fit in to your alley.
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    Selenium WebDriver
    DevOps
    Test Automation Framework
    Cross-Browser Testing
    Automated Testing
    Cypress
    Katalon Studio
    SpecFlow
    WebdriverIO
    API Testing
    Manual Testing
    Appium
    Web Testing
    Database Testing
    Performance Testing
  • $60 hourly
    I am BS in Electrical Engineering graduated with honors. During my university career I specialized in the design and development of several tools for data processing, feature & pattern extraction, time-frequency analysis, signal convolution (see my portfolio), image classification, linear & nonlinear filtering of time sequences (1D), images (2D), hyper & multi spectral images (3D) as well as the implementation of genetic algorithms for the optimization of Objective Functions subject to linear and nonlinear constraints. In my degree project I implemented a land cover classifier for satellite images (hyper spectrals) using Sparse Signal Representation as an artificial intelligence method positioned in the state-of-the-art (see my portfolio). I currently have more than 3 years of experience in applications that enable extreme performance & accuracy improvements in Machine Learning and in the powerful field of Data Science. In particular, I have heavy expertise implementing models based on classical techniques such as: Binomial and Generalized Logistic Regression, Robust Regression, Neural Networks, Vector Support Machines, K-Nearest Neighbor as well as innovative techniques positioned in the state-of-the-art as Sparse Signal Representation, all of them in applications of Image classification, Denoising, Super Resolution, among others. I have heavy skills in Python and MATLAB (with experience in R as well) so I have used these powerful programming languages for the quickly, reliable and efficient development of my projects. I also carried out 3 masters courses in Biomedical Engineering of Mathematical Methods and Statistics applied to the Engineering, with which I have solid bases to analyze and infer well on the results obtained. Feel free to get in touch with me if you need to solve any problem related to: - Machine learning - Data science - Genetic Algorithms - Signal & Image Processing - Biomedical Image processing
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    MATLAB Script
    Python Script
    Predictive Analytics
    Genetic Algorithm
    Algorithm Development
    Digital Signal Processing
    Image Processing
    Electrical Engineering
    Data Science
    Machine Learning
    Model Optimization
    NumPy
    Computer Vision
    Python
    MATLAB
  • $35 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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    Cybersecurity Monitoring
    Linux
    Desktop Support
    In-App Support
    Desktop & Laptop Support
    End User Technical Support
    Helpdesk
    WordPress
    IT Support
    CompTIA
    Technical Support
    Email Support
    English
    French
    Italian
  • $70 hourly
    Over 25 years sales and marketing experience working at CEO, board level, senior corporate roles and consulting working in the UK, Belgium and Sweden covering the EMEA region. Helping SaaS, e-commerce, retail, tech, cybersecurity and professional service businesses to find their audience, target the right digital channels and communicate an impactful message. Previously worked for major brands and SME companies in Europe, the Middle East and Africa; for example Hertz car rental, Hilton hotels, Carlson Rezidor Hotel Group (Radisson Blu and Park Inn hotels). Specialising in lead generation, SEO, social media, PR, content creation, conversion optimisation, performance marketing, copywriting and strategy to get your business found, nurture leads and close sales. 2016 - 2023 HubSpot Partner Agency Certified / Solutions Partner 2016 - 2023 Google, HubSpot Inbound Certified, Email Certified, Inbound Sales Certified, Marketing Software Certified and HubSpot Content Marketing qualified. Services provided: 1. Product marketing - defining a target audience and their needs using buyer personas, mapping the buying journey, defining the buying lifecycle, providing market research, etc. 2. Inbound marketing - developing and executing a digital sales & marketing strategy to attract, generate and nurture your prospects, sales leads and customers. 3. Content marketing - providing a content strategy based on your target audience and a production plan to deliver the content in the frequency and format you need to keep prospects interested and customers happy. 4. Strategy - from GTM (Go-To-Market) to helping established businesses regain their "spark" and compete in the new digital economy.
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    Digital Marketing Strategy
    Content Marketing
    Customer Acquisition Strategy
    Copywriting
    B2B Marketing
    Marketing Strategy
    Branding & Marketing
    Brand Positioning
    Customer Relationship Management
    SaaS
    Startup Consulting
    Search Engine Optimization
  • $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++
  • $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
  • $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
  • $70 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: Although I have an Upwork "agency", I am the only member - I do not outsource any work and I charge my normal rate** [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) - 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] - Beyondware.com - DatasheetSolutions.com - NFTWorld.io - MetaverseChat.io - JewishMusic.fm - Design Emporium, LLC - National Young Farmer's Coalition - 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) - 13 years customer service experience - 11 years small business management/accounting/bookkeeping experience - 3 years dapp/web3/nft/smart contract experience - 7 years Bootstrap experience - 4 years Material experience - 14 years WHM/cPanel experience - 6 years DevOps and CI/CD experience - (including AWS, DigitalOcean, Netlify, Firebase, Fleek) - 13 years PHP experience - (including CMS such as Wordpress, Concrete5, Drupal, and Joomla) - 13 years payment-integration experience - (such as Paypal, Stripe, 2Checkout, Authorize.net, etc) - 10 years Cryptocurrency experience - (with the ability to setup Bitcoin/other crypto payment services for ecommerce) [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. I'm in my 40s, and I've been digging in machines since I was 8. Engineers in their 20s are very smart, but they haven't witnessed as much of the evolution of technology or learned WHY some things are the way they are. They may also not understand the "just make it work fast and cheap" requirements of a real-world business when things can't be done in a textbook way. This perspective has helped me find solutions to problems that I originally thought were unsolvable. I make sure to fully understand each client's problem and work out the most effective solution I can find as quickly as possible. 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 details below and my portfolio of work to see if I might be a good addition to your project! [ARTIFICIAL INTELLIGENCE] Do I use AI? Yes. Do I just copy code into your project? No. I'm not worried about AI replacing me. In fact, AI has made me a faster, more efficient developer. It helps prevent me from making time-wasting mistakes, and it saves time with the most tedious tasks. This makes my services less expensive than someone that hasn't learned how to utilize AI to their benefit. I've come to really appreciate using AI for data processing tasks that used to take hours that can now be done in minutes. A lot of lower-rate developers will also just use AI to TRY to write nearly the entire application, which is how you get painted into a corner with buggy, vulnerable, surprised-if-it-works-at-all software. This usually ends up with either having to find someone else to rewrite it all from scratch or spending unnecessary amounts of time debugging. In the end, you will always need a human to solve any problems with nuance, which is nearly all real-world problems. [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 😅
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    ChatGPT
    PHP
    WordPress
    Blockchain
    web3.js
    MongoDB
    Node.js
    React
    ExpressJS
    Material Design
    Web Design
    Solidity
    JavaScript
    React Native
    Smart Contract
  • $100 hourly
    I am a highly-skilled developer & data scientist/analyst with over 13 years of experience in the scientific/engineering domain. I use MATLAB for developing scripts and GUIs involving data pre-/post-processing, data extraction/transformation, image/video processing, object tracking, image/data acquisition, data analysis & visualization; Python for data analysis/visualisation (primarily the modules/libraries: Pandas, Numpy, & matplotlib), and for web scraping and automation (with urllib, requests, beautiful soup & selenium webdriver), Linux shell script (bash), Fortran 90, PHP, LaTex and LabVIEW extensively for my routine work and projects. I am also aware of the basic concepts of C/C++, Java, Perl, HTML, and CSS. I have been involved in several data science-based projects. I have extensive experience in this domain again using MATLAB (or Scilab/Octave) and Python. I have worked on several projects which require an expertise in data or image extraction (from web, formatted files, tables, etc.) or acquisition from a connected device (like sensors/cameras, etc.), data or image or video analysis (post-processing, transformations, filtering, auto ROI detection, object tracking, etc.), and visualisation in form of graphs, charts, 2-D/3-D plots, etc. I have also been actively involved in the development of standalone applications with a nice graphical user interface (GUI) for quick and easy data/image analysis.
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    LabVIEW
    Mathematics
    Data Analysis
    Bash Programming
    Automation
    Data Visualization
    GUI Design
    MATLAB Script
    Matplotlib
    MATLAB
    Data Scraping
    pandas
    Python
    PHP
  • $15 hourly
    If you are an Entrepreneur or a business that's looking for rapid growth, then I am the person you need to reach out to. Here's what one of the Industry leader course creators has to say: "I hired 5 researchers and Hina did the work of at least 3 of them combined. She is a machine -- with the most beautiful brain ever. Hire her, trust me. She will not only do your research... she will improve your ideas, if you are open to that obviously. I was open to that, and she rolled with it and developed my idea into EVERYTHING AND MORE that I asked for and expected. Now it's my job to write my article, and instead of that being a daunting task, I have everything I need at my fingertips. Thank you Hina. I'm so happy to have met you, and as you know, already have an open hourly contract to send you all my research work and maybe more!" I help business owners and startups achieve their community and business goals quickly by offering Customer Support, Administrative and Operational Assistance, Content Creation, Transcription, Data Entry, and Social Media Community Management solutions. Online research is what I do professionally on a regular basis and as a passion. I can help you get organized and reach your goals. I am a strong team leader, an excellent team player, a multi-skilled professional with an attitude of getting things done! I'm also a quick learner and have extensive experience in using/utilizing Zendesk, Helpscout, Microsoft Excel, Slack, Google Docs, LinkedIn (Sales Navigator), and a variety of other applications. Upon accepting a project, I guarantee to accomplish all requirements. I am always committed to meet deadlines and leave clients completely satisfied. If you are looking to complete your project in the most efficient manner, please drop a message. I'd love to learn more about your project. Feel free to invite, and I promise I will reach out right away!
    vsuc_fltilesrefresh_TrophyIcon Open Source
    Data Management
    Research & Development
    Community Management
    Data Entry
    Online Market Research
    Content Creation
    Content Writing
    Customer Service
    Social Media Management
    Automation
    Sales & Marketing
    Lead Generation
  • $45 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
  • $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. Automation Tools: PowerShell, puppet, chocolatey, ansible, terraform, python, batch and bash scripts.
    vsuc_fltilesrefresh_TrophyIcon Open Source
    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
  • $25 hourly
    ⭐ Full-Stack Developer: Adaptable Expert for Your Multifaceted Projects ⭐ I'm a seasoned Full-Stack Developer with a knack for navigating diverse technology landscapes. My multi-disciplinary experience allows me to tackle complex projects from conception to completion, regardless of the platform or framework. Technical Expertise: ============ 1. Full-Stack Mastery: Fluent in both front-end (MEAN Stack: Node.js, Angular.js, React.js) and back-end technologies (ASP.NET/MVC, C++, C#, Ruby on Rails). 2. Database Proficiency: MongoDB, MySQL, Postgres at my fingertips for robust data management. 3. Cloud Agility: Skilled in Azure and AWS (S3, EC2, VPS) for scalable and secure deployments. 4. Mobile App Development: Build engaging mobile experiences with Flutter, React Native, and Ionic. 5. WordPress /Spree & E-commerce: Craft captivating websites and powerful online stores using WordPress and Spree Platform. Beyond Technical Skills: ================ 👉 Agile Thinker: Adapt quickly to changing demands, ensuring project success in dynamic environments. 👉 Strategic Risk Analyzer: Weigh the pros and cons of technology solutions, guiding informed decisions without compromising vision. 👉 Efficient Multi-tasker: Juggle multiple priorities seamlessly while maintaining top-notch quality. 👉Thrives Under Pressure: Perform your best in fast-paced situations, embracing flexibility and adaptability. ** Building Relationships: ** =================== I believe in fostering strong working relationships based on expertise, honesty, sincerity, and dedication. I'm passionate about helping my clients achieve their goals through collaboration and innovation. Let's discuss how my skills and experience can bring your next project to life. Reach out for a conversation and discover the value I can add to your team. #ROR#Angular#.NET#React#Next js, #Node js,# Nest js, #HTML, #CSS, #MEAN, # MERN, C#, C++, #Database #Mongo, #Postgres, #Firebase, #Web scraping, #Web design, # Web Development, #Chatgpt, #Full stack, #Responsive designs, #Wordpress, #AWS, #Devops Thank you
    vsuc_fltilesrefresh_TrophyIcon Open Source
    Amazon EC2
    Microservice
    SEO-Based Website
    ASP.NET
    Spree
    Ruby on Rails
    WordPress Development
    .NET Framework
    Software Development
    JavaScript
    React Native
    Node.js
    React
    AngularJS
  • $20 hourly
    OTC trader with 4+ years of extensive experience and expertise in the field of Cryptocurrency over-the-counter trading. Committed to Blitz Broker project of passing Crypto knowledge to anyone who's interested in it and helping them on board. Now working under FGS(Fast Gateway System), a professional P2P the trading platform seeks to convenient & simplify everything between Crypto and Fiat. A curious person who passionate about Finance industry and Interested in boosting crypto to average people.
    vsuc_fltilesrefresh_TrophyIcon Open Source
    Cryptocurrency
    Translation
  • $50 hourly
    🌟 Welcome to my Profile! 🌟 👋 Looking for an experienced firmware developer and embedded systems expert to bring your project to life? Look no further! 🔥 Here's why you should consider working with me: 🌟 Client Satisfaction: 87% of my clients recommend my services, and 33% of them become long-term clients. I'm committed to delivering results that exceed your expectations. 🎓 Ph.D. in Radiophysics: With a Ph.D. in Radiophysics and over 20 years of experience, I bring a wealth of knowledge to the table. My expertise spans firmware development, embedded systems, microcontroller programming, and end-to-end project development. 🚀 Proven Track Record: I've successfully completed over 100 projects in diverse domains, including: Internet of Things (IoT) Embedded Electronics Development Machine Vision Smart Home Electronics Wearable Electronics Start-up electronics development (Kickstarter, Indiegogo) Apple HW development Sensors Development Radars Development PCB development, Mass Production 🔍 About Me: I remember the big round eyes of my dad when he saw me with a soldering iron in my little hands, attempting to fix Christmas lights. As I grew older, my passion for engineering only deepened. I hold a degree in Electrical Engineering, and my work revolves around electro-optics, RF/wireless, embedded systems, and harsh environment electronics. Technology is in my DNA, and I thrive on creating and innovating. 🛠️ My Lab: My workspace is a temple of technology, equipped with oscilloscopes, signal generators, power supplies, and various other tools. I'm not limited to specific tools and am open to using whatever is required for your project. I often embrace open-source or low-cost design tools to make high-quality devices accessible. ✅ Areas of Expertise: Embedded systems Analog circuits Digital circuits Low power & battery-operated devices Wireless designs Microcontroller (e.g., AVR, STM, MSP, TMS, etc.) DSP, SDR, RF, UHF design 📡 Microcontroller Experience: I have specific experience with microcontrollers from various manufacturers, including Atmel, Silabs, ST, Cypress, Xilinx, TI, Espressif Systems, and Nordic. 🤖 Embedded Platforms: I'm well-versed in working with platforms such as Raspberry Pi, Beagle Bone, Mediatek, Ratlink, Atheros, Paralela, Qualcomm Snapdragon, and Nvidia Tegra. 💻 Programming Languages: My coding skills include C/C++, Assembler, Python, VHDL, Java, OpenCV, C#, PHP, and JS. 🖥️ Operating Systems: I'm proficient in Embedded Linux, RTLinux, FreeRTOS, embOS, and QNX. 🌐 Standards and Technologies: I'm familiar with WiFi, Bluetooth, BLE, LoRa, OLED, LCD, TFT, Altium Designer for PCB development, inductive and capacitive sensor technologies, and ultra-low power electronics power harvesting. Ready to bring your project to life? Let's collaborate and turn your vision into reality! 🚀
    vsuc_fltilesrefresh_TrophyIcon Open Source
    Machine Learning
    Digital Electronics
    Firmware Programming
    Digital Signal Processing
    RFID
    Analog Electronics
    Embedded C
    Embedded System
    Embedded Linux
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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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