Hire the best JSON Developers in California

Check out JSON Developers in California with the skills you need for your next job.
Clients rate JSON developers
Rating is 4.7 out of 5.
4.7/5
based on 108 client reviews
  • $40 hourly
    Hello Upwork, I have 5 years of experience in software development and data analytics. I have been a Lead Data Scientist across many industries. I am skilled at using Python, R, and Excel to solve data problems. I specialize data analysis & science visualizations and data management. I can take your raw data and re-configure it into a powerful story that describes the current and future states of your business. I can write scripts to pull data from APIs and customize data files to deliver transformational insights. Core Strengths: ✅Data Visualization ✅Data Modeling ✅API Development ✅Communication & Presentation Tools: ✅Python ✅SQL ✅R I believe in rapid communication and fast turnaround time. I will start your job the day we sign a contract and deliver it as fast as possible. I will do my best to earn a 5 star review from you.
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    ETL Pipeline
    Data Modeling
    Google Apps Script
    Web Scraping
    API
    Data Mining
    Data Extraction
    Scripting
    Automation
    Data Scraping
    SQL
    Google Sheets
    Python
  • $56 hourly
    I get things done by writing code regular people can read, being responsive, and detail oriented. I enjoy my craft so let’s build something great. I have 12 years of experience at the intersection of business and technology. In my last role I spent six years as a Project Manager for a fortune 500 generating roughly $1 million in revenue for the division annually — now I freelance as a full stack developer. I offer my expertise across a broad range of services. My top expertise is the things that make the web work (HTML, CSS & JavaScript) specializing in helping SMBs in the ecommerce space actualize their vision. If you can imagine it, I can help make it happen. I have experience working with most of the popular platforms, frameworks, databases, and tools: - Nextjs - React - Node - Express - Fastify - Svelte - postgres - various CMSs -Tailwind - Git - APIs - GraphQL - REST - mongoDB - debugging - Gulp & Webpack - 11ty - C# - Java - Linux - (last but not least) jQuery & Bootstrap 😉
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    Fastify
    API
    Svelte
    MySQL
    Next.js
    GraphQL
    Node.js
    JavaScript
    TypeScript
    Tailwind CSS
    PostgreSQL
    Web Development
    Web Application
  • $10 hourly
    I am a small business owner, self employed here to help you create/edit your website or app. I am here to help you within your budget! I have helped maybe 35 Apps get on the app store, and over 50+ websites that are available for you to check out! Very good with communication and understanding your goals before beginning projects! Let me know how I can help :)
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    User Interface Design
    Full-Stack Development
    Product Development
    iOS Development
    Web Development
    CSS
    HTML
    Coding Lesson
    Web Application
    App Feature Development
    Web & Mobile Design Consultation
    App Development
    App Design
  • $65 hourly
    Hello, My name is Katie, I'm a Web Designer & Developer living in Northern California. After studying Graphic Design in college, I spent the early part of my career creating graphics, wireframes, & mock-ups for a web company in southwestern Colorado. A few years later I relocated to the West Coast and began working as a jill-of-all-trades Marketing Designer for a company in the health & fitness industry. Creating graphics, writing web copy, designing & developing landing pages, email marketing, & managing e-commerce all fell under my domain. I also continued to work as a Freelancer, designing websites for boutique hotels around the US. All of this naturally led me into the world of Development, because knowing the technical side of things made it much easier for me to implement effective Marketing strategies. Plus, I could ensure my designs were represented exactly as envisioned on the front-end. Bottom line? I like finding beautiful, intuitive ways to increase conversions & bottom line numbers, whether that means an exciting redesign, a streamlined UX/UI, or new custom software solutions.
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    React
    Design Writing
    Adobe Creative Suite
    UX & UI
    Web Development
    CSS
    Drupal
    JavaScript
    Elementor
    HTML
    Web Design
    Squarespace
    WordPress
    UX Writing
    Sketch
  • $40 hourly
    - Highly motivated Software QA Engineer with 6+ years of experience delivering polished software through comprehensive manual and automated testing (UI/API). - Proven ability to design, execute, and automate test plans using industry-standard tools and frameworks (Python, Java, Selenium WebDriver, Cucumber, CI/CD pipelines with Azure DevOps). - Passionate about collaborating with cross-functional teams within Agile methodologies to achieve flawless user experiences.
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    Automated Testing
    Manual Testing
    RESTful API
    Quality Assurance
    Python
    Java
    SQL
    Postman
    Cucumber
    Selenium WebDriver
    CSS 3
    HTML5
  • $60 hourly
    Dynamic and detail-oriented Software Engineer with a B.S. in Computer Science and extensive experience in developing complex, highly available, and scalable systems. Proficient in both back-end and front-end technologies, including Java, Spring Boot, SQL, HTML, CSS, JavaScript, and Lit Web Component. Demonstrated expertise in analyzing, troubleshooting, and resolving complex system issues, with a strong focus on quality and continuous improvement. Effective communicator, skilled in collaborating with cross-functional teams to enhance system functionality and user experience. Proven track record in contributing to strategic projects, such as redesigning the Patient Portal UI and OCR initiatives, driving significant success and efficiency through development and testing.
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    REST API
    HTML
    Web Component
    Payment Processing
    Payment Gateway
    Health Level 7
    Salesforce
    JavaScript
    Web Services Development
    XML
    Jira
    SQL
    Spring Boot
    Java
  • $50 hourly
    Extensive success developing on the iOS platform for personal projects, individual clients, and startups. My background in tech started over 5 years ago as a high-schooler customizing Shopify sites for my e-commerce ventures. I would then go all in on iOS development in early 2021 to bring my ideas to life through the iOS platform. Today, my main focus is still on personal projects while contracting in the background. With proficiency in Swift and SwiftUI, here is what I can do for you: - Build a modern application from scratch - Revive, update or fix existing applications - Integrate new or existing applications into popular back-ends like Firebase - Get previously stalled app development efforts to the finish line - Consult on feature possibilities, App Store Connect, etc. My process: 1. Briefing / Discussions 2. Research 3. Design 4. Integrate 5. Revise 6. Release I work with the most fluent and up-to-date languages/frameworks in order to provide a rich and fresh user experience. My most commonly used tech stack is Swift, SwiftUI, and Firebase. Recently, I have been working with AVFoundation to create custom camera modules for personal and client applications. Last updated: September 15, 2022
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    App Store
    Google Ads
    Apple Xcode
    iOS SDK
    Mobile App Development
    Core Data
    User Authentication
    In-App Purchases
    MapKit
    iOS
    iOS Development
    Swift
    TypeScript
    Firebase
  • $90 hourly
    I’m a web developer with over 6 years of experience in building websites for large and medium-sized businesses. Proficient in software development. Created websites and portals, customized data-mining applications, and a social-media application; resolved diverse website issues using full-stack technologies as Web Developer. Experienced full-life-cycle work well independently or within the development team. Worked with Vue, Vuetify, VueX, Nuxt.js, React, Gatsby, Next.js, Node, Express, PHP, Laravel, Symfony, Python, Django, Flask, Ruby on Rails, and Database Management Software, AWS (EC2, API gateway, Redshift). Other skills: React Native, Flutter, Firebase, WordPress, Shopify, CMS, Bootstrap, Tailwind CSS, MUI As a community organizer, presenter, and open source contributor I'm constantly learning and looking for an environment that promotes learning, mentorship, and energy. Whether you’re trying to gain work, list your services or even create a whole online store – I can help.
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    Vuex
    Tailwind CSS
    JavaScript
    Python
    PHP
    Gatsby.js
    PostgreSQL
    Vue.js
    Vuetify
    Laravel
    Django
    MySQL
    Next.js
    React
  • $65 hourly
    Summary: - 6 years: Microsoft Power Automate - 6 years: Microsoft PowerApps: Canvas and integrated - 6 years: Microsoft Sharepoint architecture: I’ve created entire intranets from start to finish with HUB navigation and associated sites - 6 years: Microsoft Sharepoint site creation: web parts, custom templates using power shell I’ve created power apps that are integrated to a list and standalone on canvas. Those power apps have been connected to power automate workflows that handle a variety of tasks. From generating custom pdf bank letters, handling permission based off of metadata, a sophisticated notification system, updating multiple Sharepoint lists. Then created sites to showcase the canvas app with related information in the site to help end users with resources. I’ve re created the User interfaces to multiple custom applications using SPFx: Angular JS.
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    HTML
    Microsoft Office
    Microsoft Active Directory
    Microsoft PowerApps
    CSS
    Microsoft Power Automate Administration
    AngularJS
    Microsoft SharePoint Designer
    Microsoft SharePoint Development
    Angular
    Microsoft SharePoint Administration
    Microsoft Power Automate
    Microsoft Windows PowerShell
    JavaScript
  • $75 hourly
    My professional skills include C#, TypeScript/JavaScript, and Visual Basic 6/NET at an expert level, as well as many other skills at a moderate to expert level. I speak and write excellent English, and am a stickler for details.
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    XML
    Tizen
    Windows App Development
    TypeScript
    SQL
    Windows API Development
    VB.NET
    CSS 3
    Web Services Development
    AngularJS
    Visual Basic
    JavaScript
    Java
    C#
  • $55 hourly
    I am a passionate professional with extensive experience in Magento development and a strong commitment to teamwork. Throughout my career, I have worked with amazing teams, continuously enriching my skills and knowledge. My expertise lies in customizing every aspect of Magento and efficiently solving complex issues. I have successfully completed Magento 1 to Magento 2 upgrades, showcasing my ability to understand business requirements and deliver robust solutions. Collaboration is at the core of my work philosophy, and I actively engage in cross-functional projects, fostering a positive working environment. Recognizing the power of teamwork in achieving the best outcomes, I am enthusiastic about the possibility of joining your organization and discussing how my skills can add value. With my passion, dedication, and collaborative spirit, I am confident in making a positive impact from day one.
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    Docker
    LeSS Framework
    Knockout.js
    jQuery UI
    MVC Framework
    Magento 2
    Git
    CSS
    jQuery
    JavaScript
    Magento
    PHP
  • $50 hourly
    👋 Hello! I’m a dedicated Full-Stack Developer with over 5 years of professional experience in building dynamic web applications and solutions. I specialize in Ruby on Rails and JavaScript, focusing on creating clean, scalable, and efficient code to meet your business needs. Whether you’re looking for someone to streamline workflows, integrate the latest technologies, or deliver innovative web products, I’m here to help boost your productivity. I bring a diverse set of skills, including expertise in Ruby, JavaScript, React, and Node.js, along with strong teamwork, problem-solving, and communication skills. Over the years, I've collaborated with talented developers worldwide, which has sharpened my ability to contribute effectively to team efforts and deliver exceptional results. Core Technologies I Work With: • Frontend: HTML, CSS, JavaScript, ReactJS, VueJS • Backend: Ruby, Ruby on Rails, NodeJS • Testing & Deployment: Jest, RSpec, Heroku, Netlify • Version Control: GitHub, GitLab, GitFlow • APIs & Integrations: REST, GraphQL I’m particularly experienced in upgrading Ruby on Rails applications, ensuring smooth transitions and stable functionality post-upgrade. I excel at reviewing existing code, proposing improvements, and working within CI/CD pipelines to optimize delivery. Beyond work, I enjoy creative writing, reading, and game design, which fuel my creativity in solving complex software challenges. I’m always eager to explore new full-stack development opportunities in dynamic startups or established companies where I can make a meaningful impact. If you’re looking for a passionate and skilled developer to join your team, feel free to reach out! Thank you! ✅Full-Stack Web Development: I offer comprehensive full-stack web development services, specializing in: ► Ruby on Rails Development ► JavaScript Development (React, Vue, Node.js) ► Building scalable Web Applications ► Developing efficient RESTful APIs and Microservices ► Cloud Development (AWS, Azure) ► Seamless DevOps Integration for continuous deployment I help businesses by delivering robust solutions tailored to their exact requirements, ensuring efficient front-end and back-end development. ✅Front-End Development: As a front-end expert, I focus on delivering sleek, user-friendly interfaces: ► ReactJS & VueJS Development ► Responsive design using HTML/CSS, Tailwind CSS ►UX/UI Design, Wireframing, and Prototyping ► Expertise in Next.js, React Native, and modern testing frameworks like Jest ► Whether it's landing pages, web applications, or custom UI designs, I create fast, mobile-optimized user experiences. ✅Web Development: I specialize in modern web development using: ► Ruby on Rails, React, and Node.js ► End-to-end solutions for MVPs, Enterprise Web Apps, and B2B/B2C websites ► Expertise in AWS Development, Docker, and Web Portals ► Proficiency in MERN Stack and building PWA Web Apps ✅Website Customization and Maintenance Offering customized solutions for: ► WordPress Website Design & Maintenance ► CMS Consultation, Theme & Plugin Installation ► Ongoing Website Redesign and optimization services to keep your site up to date and efficient. ✅Back-End Development: I excel in back-end systems, including: ► Node.js & Ruby on Rails development ► Building and optimizing APIs and Microservices ► Database expertise with MongoDB, MySQL, and API Integration ► Strong knowledge of GraphQL, RESTful API Development, and scalable back-end architecture. ✅E-commerce and Specialized Development: With a focus on e-commerce and other specialized solutions, I deliver: ►Custom E-commerce Websites ► Web API Development ► Automation Scripts & Browser Automation ► HIPAA Compliant Solutions and Page Speed Optimization
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    Software Development
    Jenkins
    Mocha Framework
    JavaScript
    ExpressJS
    MERN Stack
    NodeJS Framework
    Node.js
    Ruby on Rails Stack
    Capybara
    RSpec
    React
    Ruby on Rails
    Ruby
  • $70 hourly
    🏆 5 + Years Of Experience 🏆 Cost-Effective 🏆 High-Quality Work 🏆 Fluent English Verified 𝗘𝗺𝗽𝗼𝘄𝗲𝗿𝗶𝗻𝗴 𝗦𝘁𝗮𝗿𝘁𝘂𝗽𝘀, 𝗕𝘂𝘀𝗶𝗻𝗲𝘀𝘀𝗲𝘀, 𝗮𝗻𝗱 𝗢𝗿𝗴𝗮𝗻𝗶𝘇𝗮𝘁𝗶𝗼𝗻𝘀 𝘄𝗶𝘁𝗵 𝗜𝗻𝗻𝗼𝘃𝗮𝘁𝗶𝘃𝗲 𝗠𝗼𝗯𝗶𝗹𝗲 𝗦𝗼𝗹𝘂𝘁𝗶𝗼𝗻𝘀. With over 5 years of experience in mobile app development, I provide a comprehensive suite of services to turn your vision into high-performing web and mobile applications. Whether you need a robust web platform or a sophisticated mobile app, I deliver solutions that are seamless, scalable, and secure. 𝗠𝘆 𝗮𝗿𝗲𝗮𝘀 𝗼𝗳 𝗲𝘅𝗽𝗲𝗿𝘁𝗶𝘀𝗲 𝗶𝗻𝗰𝗹𝘂𝗱𝗲: 📱 Mobile Apps (iOS and Android) 🎯 We excel in projects due to our focus on gaining high levels of client trust from the start 💡 Why Work with Me? I’m committed to building robust, future-proof solutions that solve real business problems. I value collaboration and maintain clear communication throughout the project. With me, you get: ⚡ Quick Turnaround Times ✅ High-Quality, Reliable Code 🎯 Transparent, Client-Centered Approach 📈 Ongoing Support & Maintenance ✏️✏️𝗗𝗲𝘀𝗶𝗴𝗻 𝗮𝗻𝗱 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁 𝗣𝗹𝗮𝗻 ✏️✏️ The design and development of the whole product will be in phases. BA Analysis → Wireframes & Prototypes → UI/UX Design → Backend and API Development → Testing → Launch and Maintenance 𝗠𝘆 𝗰𝗼𝗿𝗲 𝘀𝗸𝗶𝗹𝗹𝘀 𝗮𝗻𝗱 𝗲𝘅𝗽𝗲𝗿𝗶𝗲𝗻𝗰𝗲𝘀: ✅ Technologies we use - React Native | Flutter | Swift | Kotlin | SwiftUI | IoT| Socket.io ✅ Interaction with backend - Rest API | JSON | XML | PHP | Nodejs ✅ Databases / Data Management - SQLite | MySQL ✅ Social Integration - Facebook | Twitter | Youtube | Instagram | Snapchat | Tinder ✅ Chat - XMPP | Socket | Firebase ✅ Version Control Tools - Github | Bitbucket | Gitlab ✅ Google Maps, Apple Map kit | Geolocation | GPS | Location Tracking ✅ Audio / Video Live Streaming ✅ Firebase APIs ✅ Paypal | Braintree | Stripe Payment Gateway ✅ QR Codes | BarCodes | VIN Scanner | NFC Tags Reading ✅ In-App Purchase | Advertisement | Push Notifications | GCM | Google Analytics 𝗜𝗻𝗱𝘂𝘀𝘁𝗿𝘆 𝗘𝘅𝗽𝗲𝗿𝗶𝗲𝗻𝗰𝗲 🏐🤾‍♂️ - Sports betting and i-gaming 📚🎓 - Education and Academia 🏥⚕️ - Healthcare and Fitness 💇✈️ - Service Booking 🚚📦 - Delivery Platforms 🛒🛍️ - Retail and E-commerce ✈️🌍 - Travel and Tourism 🚚📦 - Logistics and Transportation 🏡🏨 - Real-estate and construction I am experienced for the entire app lifecycle from idea creation, project planning, prototyping, MVP development, debugging, and releasing on the App Store. I communicate extensively and strive to be available for any calls, meetings, or consultations. Feel absolutely free to talk to me about your next sick project 🤙 I try to handpick app/design projects that are interesting and fit my skills well OR challenge me to grow in a new skill! My favorite relationships are long-term relationships with clients. Any amount of time I get you though is perfect if you leave absolutely satisfied! 🌟 Bests 🍻 keyword: Full Stack Developer | Web Application Development | Mobile App Developer | End-to-End Development | Frontend Developer | Backend Developer | MERN Stack (MongoDB, Express.js, React.js, Node.js) | MEAN Stack (MongoDB, Express.js, Angular, Node.js) | LAMP Stack (Linux, Apache, MySQL, PHP) | JAMstack Development | API Integration | Responsive Web Design | Cross-Browser Compatibility | Scalability Solutions | Microservices Architecture | Cloud-Based Solutions | RESTful APIs | React.js Developer | Vue.js Developer | Angular Developer | HTML5/CSS3 | JavaScript Expert | TypeScript Developer | Bootstrap | Tailwind CSS | Single Page Applications (SPA) | Node.js Developer | Python Developer | Ruby on Rails Developer | Express.js Developer | Django Developer | API Development | GraphQL Developer | MySQL/PostgreSQL | MongoDB Developer | Firebase Expert | Redis | Docker & Kubernetes | CI/CD Pipelines | DevOps Engineer | iOS Developer (Swift) | Android Developer (Kotlin, Java) | React Native Developer | Flutter Developer | Cross-Platform Mobile Apps | Hybrid Mobile Apps | Native App Development | Xamarin Developer | Progressive Web Apps (PWA) | Mobile UI/UX Design | AWS Developer | Google Cloud Developer | Azure Solutions Architect | Cloud Computing Solutions | Serverless Architecture | WordPress Developer | Shopify Developer | WooCommerce Developer | Custom E-Commerce Solutions | Web Performance Optimization | SEO-Friendly Development | Page Speed Optimization | Mobile Optimization | UX/UI Optimization.
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    iOS
    Mobile App
    Java
    Android
    Firebase
    SQLite
    Node.js
    RESTful API
    Socket.io
    SwiftUI
    Kotlin
    Swift
    Flutter
    React Native
  • $45 hourly
    Full Stack developer who worked at Nokia, Goodyear, worked at 2 FinTech startups and created social media apps, similar to Twitter for web developers (Yes 🙃 it does have free "Edit" button.) DM chat, avatars and image uploads in timeline, retweet feature, delete tweet (I use CRUD pattern for API calls.) Worked at several start-up companies in Web Development industry (Including lead UI developer at a project for GoodYear Tire Co.) and with skills developed there I decided to take Freelance path for now. Not being attached to a company gives me freedom I need. UI Web Developer proficient in React.js, Node.js, NPM, Babel, WebPack, JavaScript, some PHP. Solid knowledge of MySQL and MongoDB, Node.js, some Python. Primary experience is custom user interface development for large scale applications. Worked for Good Year tire company, DropShip Direct, and few others. Programming, developing new features from scratch, or upgrading or modifying existing code.
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    Mobile UI Design
    Tailwind CSS
    CSS
    ChatGPT
    Socket.io
    Next.js
    MERN Stack
    Mobile Web
    Mobile App
    PHP
    JavaScript
    MongoDB
    React
    Node.js
  • $150 hourly
    California-based programmer with an extensive background in a variety of technologies, including desktop, mobile, and web platforms. I deliver high quality software by communicating with my clients effectively and working tirelessly to understand their exact needs for a project. With a thorough analysis of the problem and an effectively designed solution, I'm able to leverage years of independent software experience to implement and deliver your product quickly and effectively. I graduated from Santa Clara University with a Master's degree in Software Engineering in 2012, and have spent the last decade working with clients all over the Silicon Valley area. Here on Upwork, I've achieved and currently hold the Top Rated, Top Rated Plus, and Expert-Vetted talent badges - which are the highest the platform offers. I've also acquired AWS certifications in a variety of disciplines, all of which contribute to my broad understanding of technical domains and enhance my ability to design and implement effective solutions tailored to your project's needs. I strive to delight my clients with every project I undertake, and I would love to do the same for you. Please reach out if you have any questions!
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    Smart Contract
    Cryptography
    Blockchain Development
    Cryptocurrency
    Solidity
    Blockchain Architecture
    API
    Amazon Web Services
    C++
    Python
    JavaScript
    Desktop Application
    API Integration
  • $85 hourly
    25+ years in Software Development Available for 40-60 hrs./wk. Excellent references from CEOs of the companies. Bringing products to market: inception, spec, architecture, implementation, testing. Seeking for software development projects in the following areas on Windows Platforms: - Recent successful GPT-3/3.5/4 API experience with C#, DALL-E interface, and OpenAI Whisper. - Experience of developing RAG Web Service enabling chatting with private corpus of documents, based on Azure Cognitive Search SDK, Azure OpenAI API and Azure Cosmos Vector DB for vector, hybrid, and semantic search. Segmenting Word/PDF/Excel/CSV/Text documents, embeddings, and ingestion. - Worked with ML.NET in VSTO Outlook Add-In environment for email classification. - Experience with Text-To-Speech and Speech-To-Text using AWS, Azure, Google, Eleven Labs, and other vendors. Experience with Google Voice Services, including Diarization (recognition of different speakers and designation in the transcript), and Medical Transcription. Able to produce STS (Speech-to-Speech) application - interacting with ChatGPT over microphone and speakers. Recent Development Experience of TTS with OpenAI. - AI Training of basic GPT models using fine-tuning, and embedding techniques with vector databases, such as Pinecone, Qdrant, and Milvus APIs. - OpenAI Completion and Embeddings API, GPT-3/3.5/4, Whisper API for Transcribing and Translation - Azure Semantic Kernel, Azure Data Explorer (ADX), Azure Blob Storage, Azure Analytical Services. - AWS Text-To-Speech, AWS Storage - Web Services: REST-API, ASP.NET Framework and Core, WCF Web Services, Microservices - Azure Active Directory Authentication from Desktop Applications in C# - Desktop applications with C#/.NET Framework/.NET Core, WinForms, WPF, DevExpress - Microsoft Office VSTO/COM Add-Ins for Outlook, Excel, Word, and PowerPoint - Client/Server Systems: Sockets and high-level protocols, such as HTTP, FTP, MQTT - Windows Services - Microsoft Dynamics 365 - Hardware Interface: USB/RS232/RS485 Technologies and Frameworks: - Languages: C#, C/C++, Python, MicroPython, XML, JSON - Databases: SQL, SQLite, MySQL, Entity Framework 6/Core and LINQ. - Networking: Sockets (.NET and Winsock), REST API, WCF, HTTP, FTP, MQTT, packet-level TCP/IP, - Serial (RS232/RS485), MODBUS. - IDE: Visual Studio 2010 through 2022 - Office Add-Ins: VSTO Add-ins for Outlook, Excel, Word, PowerPoint. Add-In Express Framework. - VOIP: PJ SIP Stack with DBUS, Asterisk, Open Phone Abstract Library (OPAL) - Active Directory/LDAP/ADSI - Monte Carlo Simulations in C# - Linux: C/C++ and Python with MQTT Development on Ubuntu and Raspbian. - AES256 Encryption, Monte-Carlo Simulations, SHA256, PGP/GnuPG PKI (Public Key Infrastructure) Application binaries signing (Authenticode), Security Certificate generation in code based on CA. - Installers with Advanced Installer, Deployment strategies. - Product Licensing
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    Quantitative Analysis
    Plugin Development
    Microsoft Excel
    TCP/IP
    Winsock
    Microsoft Outlook
    Web Service
    DevExpress
    XML
    C
    Microsoft Visual Studio
    C#
    C++
    Windows Forms
  • $75 hourly
    am an experienced project manager and expert developer specializing in AI-powered automation, custom web applications, databases, and low-code solutions. My focus is on delivering innovative, tailored solutions that empower businesses to work smarter, not harder. Over the past decade, I’ve partnered with organizations of all sizes to design tools and integrations that go beyond cookie-cutter software, driving efficiency and unlocking new capabilities. This profile predates Automaton Solutions, my company linked below, where we focus on cutting-edge AI technologies to transform workflows and automate complex operations. At Automaton Solutions, we are leaders in building AI-driven solutions tailored to your business needs. As certified partners of Make.com, Knack.com, Kintone.com, PDF.co, and other leading platforms, we specialize in crafting systems that integrate seamlessly with your operations. From AI automations and workflow optimization to advanced integrations, we ensure that every solution we deliver saves time, reduces costs, and adds value. Why Work With Us? AI-Focused Expertise: We specialize in AI-powered workflows and automations that revolutionize the way you work. Tailored Solutions: We design custom applications and integrations that adapt to your business needs. Proven Track Record: With thousands of successful integrations and automations, our work drives results. Industry Partnerships: As certified partners with leading SaaS platforms, we deliver cutting-edge tools and insights. Responsive Service: Our team is highly responsive, with most issues resolved within 1-2 hours. We’ve earned a 100% job success rate and glowing reviews over nearly a decade on Upwork, and we continue to build lasting partnerships with our clients. I’m always happy to explore how we can bring your vision to life. Let’s have a conversation about your goals and how we can help achieve them.
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    Make.com
    AI Implementation
    Xero
    Formstack
    Zapier
    API
    Knack
    Smarty
    jQuery
    JavaScript
    PHP
  • $30 hourly
    I have made countless websites and iOS apps over the years. Positive, hardworking developer open for hire. My skills include: RESTful API integration HTML/CSS Javascript React/Node.js AWS SQL/NoSQL databases Swift/SwiftUI ARKit AI Integration ChatGPT Integration
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    Figma
    SwiftUI
    AWS Application
    Swift
    JavaScript
    Node.js
    jQuery
    RESTful API
    CSS
    Python
    HTML
    MySQL
    React
    SQL
  • $63 hourly
    Android developer for multiple fortune 500 companies. Full range of Android experience including Android Operating System(AOSP) modification, TV Broadcast(VAST), Medical (Epic) and Google Play deployment. Worked in Agile environments for fortune 500 companies. Agile environment consisted of daily stand-ups to report progress, sprint planning for 2 week sprint intervals. meeting with business development and project managers, Accustomed to working remotely and communicating with 3rd party remote development teams. As a contractor, adept at learning and applying new and existing technologies to business pain-points in time intense projects. Accustomed to providing POC's for innovative technology. Solution and milestone driven. Technologies Include: * Android, AOSP, Android Jetpack, Android Studio, Android NDK, Android SDK, ADB, Flutter, Tetrofit, Dagger2, Espresso, Google Play Console, Google Cloud Platform, Firebase * Java, Kotlin, Dart, C#, JavaScript,, JSON, Groovy, JUnit, SQL, PHP, REST, NodeJS * GitHub, Bitbucket, GitLab, Jenkins CI/CD * Slack, Jira, Trello, Scrum, Agile, Confluence * Blockchain, Ethereum, Chocolatey, MetaMask, Truffle, Solidity, block.io API Thank you for reviewing my overview and I look forward to taking your project to the next level! Victory
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    Android SDK
    Flutter
    Android
    Kotlin
    Android Studio
    SQL
    Java
    Android App Development
    Android Room Persistence
  • $30 hourly
    Hello. I'm John, a Python developer and systems integrator with a good amount of experience. I've been working with Python, especially creating scripts that improve productivity. I also enjoy creating API integrations and using websites like Zapier and Notion to come up with solutions to everyday problems. I am also open to doing other various tasks like data entry, editing and formatting files, and troubleshooting software issues. I am always learning and would love to help out with your projects. I'm all about keeping things simple and reliable when it comes to problem-solving. If you have an idea that you want to implement, I can use my expertise to create draft, so you can visualize your idea more clearly. I make sure to deliver results that fulfill all of your project's requirements. In my job proposals, I start by providing you with an overview of the approach I will take. I then list how long the project will take and when I will deliver the project. I make sure to answer any questions you have throughout the entire process to make sure everything gets done on time. If you ever have any questions, I usually get back to you within 10 minutes max any time of the day. Freelancing is my way of exploring new things and helping out on various projects. I'm committed to writing code that's easy to understand and lasts a long time. If there is something I'm not familiar with I will let you know, so you are aware that it is out my scope. I am very transparent when it comes to my skills. My goal is to improve how your system works, automate some repetitive tasks, and make different parts run smoothly. I am active on here and login every hour or so, so don't hesitate to contact me. I will turn your ideas into simple and effective solutions or improve any existing code you have. If you want to see any examples of my previous work, let me know. I look forward to speaking and working with you.
    vsuc_fltilesrefresh_TrophyIcon JSON
    Zapier
    Notion
    Sharetribe
    Google Apps Script
    Data Scraping
    Node.js
    Bot Development
    Git
    Microsoft Excel
    API
    Python
    Data Entry
    Automation
    Scripting
  • $75 hourly
    Hello and thanks for visiting my profile! Maybe you have been in business for years. Or you just started a new business. Either way, every company needs a professional website to stay competitive. If your current site needs a refresh or you are starting from scratch. My job is to elevate YOUR company with a website that is secure, beautiful, loads fast and represents your brand. I specialize in responsive, mobile friendly WordPress websites, creating custom themes as well as modifying existing themes, plugins, and writing custom code needed to achieve my client's goals. I also have extensive experience integrating the WooCommerce shopping cart system for e-commerce websites, as well as working with the WordPress REST API. Over the past 10 years, I have developed a wide range of websites using HTML5/CSS3, PHP, MySQL, and Javascript, including sites for startup companies, small businesses, and individuals. I enjoy developing, coding, and maintaining clean, professional, easy to navigate websites. I can help you or your business create a website from a design concept to a completed, polished and professional site. I can also help maintain and update existing websites. I am having CMS experience as well. Especially WordPress, Magento, Shopify, Open Cart, and well aware of almost all tools in PHP. I have experience in theme development, Woo-commerce customization, parallax scrolling, extension development, Converting PSD to WP, Responsive Structure Programming, integration, and customization. I can ensure you in deriving optimum benefits out of WordPress. My database skills: - SQL/T-SQL development - queries, stored procedures, view, triggers, optimization - SQL Server, Postgres, MySQL - all though current versions - Database administration / DBA, onsite and remote - Performance Tuning - all around, including hardware, indexes, query optimization, etc. - BI / Charting / Reporting - including Visual Studio, SSRS, Tableau, Power BI, Jaspersoft - Azure Search - Microsoft Certified (MCSA) My IT/Development skills: - WordPress site development and customization - Server Management - Windows, Linux, cPanel, AWS, Azure, WAFs, Firewalls - Email setup and delivery - Application development (Python, .Net, C#, VB, CSS, HTML5, XML, JS, SOAP, REST) - CodeOnTime .Net app generator - Agile Team environments - HTML, Javascript, CSS, jQuery, Ajax, XML, JSON My Strengths: - Organized - Collaborative - Resourceful - Hard worker - Self-Motivated I would be glad to help your project succeed!
    vsuc_fltilesrefresh_TrophyIcon JSON
    MySQL Programming
    Web Design Plugin
    Magento
    WordPress
    SQL Programming
    Web Development
    AJAX
    Python
    PHP
    Database Programming
    .NET Core
    Joomla
    JavaScript
    Database Administration
  • $30 hourly
    I am a self-taught Web Developer who moved from the Midwest to Silicon Valley. I am a detail oriented person with a drive to be as efficient and clear as possible in all things, which worked well in my previous careers of logistics and photography. I am proficient in the foundations of web development (JS, HTML, & CSS), as well as React & TypeScript. Most of my time has been building on the Google Firebase set of products, so I am quite comfortable with: Firebase Hosting, Firestore (NoSQL/Document Databases), Authentication, Google Cloud, & Functions (Cloud Functions).
    vsuc_fltilesrefresh_TrophyIcon JSON
    React
    Form Development
    Node.js
    Google Maps API
    API
    Firebase Cloud Firestore
    Squarespace
    Front-End Development
    Firebase
    CSS
    HTML
    JavaScript
    TypeScript
    Web Development
  • $20 hourly
    I'm a language-agnostic full-stack developer driven by an innate problem-solving passion. My comfort zone extends to writing code in various languages and frameworks, encompassing Java, Python, ReactJS, NodeJS, Angular and more. My profound understanding of various industries stems from my role as Head of Credit at XPRS Capital, where I declined/approved over half a BILLION DOLLARS worth of commercial loan applications. I have worked for fortune 500 companies such as JPMorgan and offer scalable solutions, clean code and effective communication.
    vsuc_fltilesrefresh_TrophyIcon JSON
    API Development
    Database
    API
    Object-Oriented Programming
    JavaScript
    Python
    CSS
    Flask
    PostgreSQL
    HTML
    MongoDB
    Django
    React
    Node.js
  • $70 hourly
    I am a full stack software engineer with experience in building web and desktop applications. I have experience working with big data to clean, analyze, and display. For web applications, I am comfortable working with the MERN stack (MongoDB, Express, React, Node.js). For desktop applications, I have experience working with .NET in C#. I have experience working in Python with various libraries such as NumPy and pandas. I am also very comfortable working with C++ and Java.
    vsuc_fltilesrefresh_TrophyIcon JSON
    pandas
    NumPy
    React
    Node.js
    MATLAB
    Lua
    Java
    Python
    JavaScript
    .NET Framework
    MongoDB
    C++
    C#
  • $75 hourly
    As a skilled strategist with diverse experience in web design, UX/UI design, and copywriting, Amara specializes in creating innovative digital experiences for the wellness sector and human-centric experiences. With a diverse range of expertise from working with start-ups and non-profits to artists, she has a deep understanding of the nuances and challenges involved in creating digital solutions for a range of audiences. What sets Amara apart is her unique background as a certified permaculture designer and reiki healer, which gives her an edge when building mindful content and programming. She leverages her passion for health with her expertise in designing conversational agents and user-friendly experiences to create digital solutions that are both engaging and transformative for clients. Amara develops reliable and scalable digital tools and content that meet each client's specific needs. From designing websites and mobile apps to developing engaging social media strategies and content, she has the capacity to deliver exceptional results that drive engagement and brand loyalty.
    vsuc_fltilesrefresh_TrophyIcon JSON
    SEO Writing
    Health & Wellness
    Copywriting
    Content Creation
    Illustration
    Brand Design
    Model Tuning
    Front-End Development
    User Interface Design
    Prompt Engineering
    Natural Language Processing
    UI/UX Prototyping
    Python
    JavaScript
  • $35 hourly
    I have helped build huge enterprise solutions like Oakley.com as a front end developer, as well as small and medium solutions throughout my career. I really listen to your vision and bring it to life. How can I help you? I'm a competent front-end web developer with 12+ years experience thinking and building responsive websites. I love the challenge of being given a style guide, Photoshop or Figma file and translating it into a functional, semantic, W3C valid markup solution. I'm looking to work with clients that value quality in web development and in partnerships. I'm the guy you can count on time and again to get a project done right so you can move on to the next thing.
    vsuc_fltilesrefresh_TrophyIcon JSON
    Bootstrap
    React
    jQuery UI
    jQuery
    JavaScript
    CSS 3
    LeSS Framework
    Sass
    Front-End Development
    Git
    SQL
    JSTL
  • $70 hourly
    Software engineering leader experienced in both creating software that innovates and engages the customer as well technical strategy that aligns with product and company objectives
    vsuc_fltilesrefresh_TrophyIcon JSON
    Firebase
    AWS Development
    Android
    Swift
    iOS
    AR & VR
    Unity
    Microsoft Azure
    C#
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