Upwork home
Sign up
Secondary

Hire the best REST API Developers in the United States

Check out REST API Developers in the United States with the skills you need for your next job.
Get started
Clients rate REST API developers
Rating is 4.7 out of 5.
4.7/5
based on 497 client reviews
  2. Development & IT Talent
  3. REST API Developers
  4. (Current) United States
  • $50 hourly

    • 5.0/5
    • (16 jobs)
    Greetings, I'm Aaron, a software engineer with 10 years experience. I am an expert at Java and Spring Boot, while also being well versed in many other languages, JavaScript, NodeJS, PHP, C++. I know web very well, so HTML, CSS, React, and various other frontend tech. For most projects, we can do fixed pricing. I will let you know the price, when it can be expected to be done, and what milestones we should have. I work on the following sorts of projects: - Creating REST APIs and developing backends - Database design and implementation, optimizations - Building web apps, both internal and external - Integrations between systems, writing custom integration code - Custom automations, usually in code. - IT work, setting up servers and cloud infrastructure, scalable systems - Anything at all related to Java, Spring Boot, and this ecosystem I can do the entire lifecycle for your software, you just tell me the requirements, I'll get it done.
    vsuc_fltilesrefresh_TrophyIcon REST
    JavaFX
    Stripe
    SOAP
    J2EE
    RESTful Architecture
    RESTful API
    Amazon Web Services
    React
    JSON
    XML
    JavaScript
    Apache Maven
    Spring MVC
    Spring Security
    Spring Boot
    Java
  • $90 hourly

    • 5.0/5
    • (17 jobs)
    Hello! I have 20 years experience with web development. 17 of those years have been with a Ruby on Rails focus and accompanying DevOps. I also have extensive experience with client-side Javascript. I believe maintaining a high-level of communication during a project is paramount to the success of a project, in addition to it finishing on-time and on-budget. Software development is my business, I'm not moonlighting with a full-time job during the day. As such, I will not disappear one day to never be heard from again. Which unfortunately is a common situation with freelance developers. Additionally, I believe in high-quality software development practices like automated testing, test-driven development, continuous integration/delivery, daily stand-ups, etc All of this is with the end goal of helping businesses increase their return on investment with their software development projects. I have expert experience with the following technologies : - Ruby, Ruby on Rails - Javascript/Ecmascript 5+, Hotwire/Turbo/Turbolinks - HTML5, CSS3 - Nginx - Ubuntu, DevOps - Postgres, MySQL - Rackspace, AWS, Digital Ocean, Heroku - Background processing, Queuing (Resque/Sidekick) - REST, Web Services, SOAP - High-performance APIs (JSON/XML) - Payment Processing - Stripe, Braintree, Paypal, Chargify I also have general experience with: - Apache - Linux variants other than Ubuntu - ElasticSearch, Solr, Sphinx - MongoDB Thanks for reading if you made it this far. Let's make something great together!
    vsuc_fltilesrefresh_TrophyIcon REST
    Test-Driven Development
    API Development
    Agile Software Development
    RESTful Architecture
    Ruby on Rails
    Ruby
    HTML5
    jQuery
    JavaScript
    CSS 3
  • $50 hourly

    • 4.9/5
    • (21 jobs)
    JavaScript Developer (React, Node.js, Angular) at the Best Upwork Agency in Kyiv, Ukraine in Web&Mobile Dev 2018 🏆 Are you looking for a top-notch App Development on React? You’re on the right way!👇🏼 My name is Maksym and I`m a Full-stack Developer (Node, React.js, Angular). About me: * 9+ years proven track record (Web Application Development) * Solid experience in the development of monitoring systems, retail management tools, blockchain apps, social networks * Tech Stack: Node.js, PHP, JavaScript, ECMAScript, Angular, Backbone.js, React, React Native, Blockchain, MySQL, MSSQL, PostgreSQL, MongoDB * Segments: FinTech, ERP, E-commerce, Blockchain * Perfectly adapted to your business processes and can offer you my ideas for implementation As of now, I'm a part of the JAM team where I can realize my professional skills and create top-notch apps. JAM is a team of true professionals focused on JavaScript. We deliver complex web and mobile applications and browser extensions using React, React Native, Angular, TypeScript, Node.js.
    vsuc_fltilesrefresh_TrophyIcon REST
    React Native
    Ionic Framework
    RESTful Architecture
    MeteorJS
    Node.js
    React
    MongoDB
    Google Chrome Extension
    JavaScript
    AngularJS
  • $35 hourly

    • 4.7/5
    • (12 jobs)
    Dedicated and skilled Web Developer with 12 years of experience in creating and maintaining web applications. Adept at collaborating with cross-functional teams to drive project success. Seeking to leverage my expertise in front-end and back-end development to contribute to innovative web solutions. Experience Shopify: Im able to customize and develop Shopify themes, templates and layouts to meet client requirements. Implement and configuring apps and extensions to enhance site functionality. Wordpress: I'm able to work with any page builder (wpbakery, elementor, gutenberg, etc) and create custom themes and plugins. Experience in converting any design from figma, Xd to photoshop to html. Proficient in use of hooks and custom functions. Woocommerce experience. Gateway payment set up. Products filter. Laravel: Strong understanding of MVC architecture and RESTful API development. Proficient in use of artisan cli. Experience importing and data conversion from css/xlsx files. Knowledge of git version control and Command line Git. Expertise in code optimization and improving database efficiency (SQL Server, Mysql, Pl-sql) Strong front-end experience using Javascript ES 6, React js, Vue js, css3. React Js: Good understanding of React fundamentals to promote better component lifecycle practices. Developed responsive user interfaces using React.js and Redux, resulting in improved user experience and engagement. Collaborated with designers and backend developers to implement frontend components and integrate with backend services.
    vsuc_fltilesrefresh_TrophyIcon REST
    Website
    Shopify
    Stripe
    Payment Gateway Integration
    WordPress
    CodeIgniter
    jQuery
    React
    React Native
    Laravel
    ECMAScript
    API
    RESTful Architecture
    PHP
    JavaScript
  • $120 hourly

    • 4.7/5
    • (206 jobs)
    🥇 𝐆𝐥𝐨𝐛𝐚𝐥 𝐂𝐓𝐎 - 𝐅𝐢𝐱 𝐁𝐫𝐨𝐤𝐞𝐧 𝐒𝐨𝐟𝐭𝐰𝐚𝐫𝐞 𝐒𝐲𝐬𝐭𝐞𝐦𝐬. 🏆 $𝟓𝐌+ Revenue 🏆 𝟏𝟎𝟎+ Companies scaled 🏆 𝟐𝟎𝟎+ Successful Apps 📈 Help B2B / B2C companies improve profitability/efficiency by at least 𝟏𝟎% 🤝 I've Built and Worked on over 2𝟎𝟎+ Web & Mobile Projects. 💡 My clients are individuals, startups, and enterprises that primarily come from another dev shop with broken software or stagnant performance ⭐ Proficient in Project Management, Agile Methodologies, and Team Leadership. What I bring to the Table: 🔸Technical expertise, including software development and technical lead experience. 🔸Technical discussions with investors, founders, and stakeholders. 🔸Expertise in scaling teams and infrastructure for millions of users. 🔸Expert in Managing third-party agencies and developers. 🔸Expertise in converting business objectives into results. 🔸Building strong relationships with C-level executives. 🔸Experience leading cross-cultural and hybrid teams. 🔸Agile development and project management. See what Mark and Patrick from BrainTap and Streamily have to say about our engagement. Visible on my profile. 𝐀𝐬 𝐇𝐞𝐚𝐝 𝐨𝐟 𝐄𝐧𝐠𝐢𝐧𝐞𝐞𝐫𝐢𝐧𝐠 𝐟𝐨𝐫 𝐁𝐫𝐚𝐢𝐧𝐓𝐚𝐩: I cut monthly costs from $𝟏𝟔𝟎,𝟎𝟎𝟎 to $𝟓𝟎,𝟎𝟎𝟎. I launched all desired functions and had a 𝟗𝟗.𝟔% crash-free rate. Contributing to 𝟏𝟎,𝟎𝟎𝟎+ downloads and 𝟒.𝟗 user rating with over 840 reviews. ⭐ Result of my Engagement: ⭐ 🎯 𝐒𝐭𝐫𝐞𝐚𝐦𝐢𝐥𝐲: Company workforce grew from 𝟏𝟓 to 𝟐𝟖 in one year. Revenue increased 𝟏.𝟒𝐗 🎯 𝐁𝐫𝐚𝐢𝐧𝐓𝐚𝐩: Revenue increased from $𝟑 𝐌𝐢𝐥𝐥𝐢𝐨𝐧 to $𝟔 𝐌𝐢𝐥𝐥𝐢𝐨𝐧 within a year. 🟠 Looking for an expert Developer❓ 🟠 Current team not delivering results❓ 🟠 Worried about pricing or the hourly rates❓ 🟠 Looking for help with Software Development for a new App❓ 🟢 Look no further; let’s get on a call and let me solve your problem❕ 👇𝐁𝐨𝐨𝐤 𝐚 𝐌𝐞𝐞𝐭𝐢𝐧𝐠👇 ------------------------------------------------------- KEYWORDS ---------------------------------------------- 𝐀𝐈 𝐑𝐞𝐚𝐝𝐲: Copilot, ChatGPT, AlphaCode, AskCodi, Codeium, CodeGPT, CodiumAI 𝗠𝗼𝗯𝗶𝗹𝗲 𝗔𝗽𝗽 𝗗𝗲𝘃 𝗗𝗮𝘁𝗮𝗯𝗮𝘀𝗲𝘀: SQLite, Realm Database, Azure Cosmos DB, MongoDB, Microsoft SQL Server, PostgreSQL, Neo4j, Firebase Cloud Firestore, Firebase Realtime Databse 𝗠𝗼𝗯𝗶𝗹𝗲 𝗔𝗽𝗽 𝗗𝗲𝘃 𝗗𝗲𝗹𝗶𝘃𝗲𝗿𝗮𝗯𝗹𝗲𝘀: Hybrid App Development, Native App Development, AI Mobile App Development, Android App Development, iOS Development, Mobile App Development, Mobile App Development Consultation, Mobile App Redesign, Mobile App Testing, Payment Gateway Integration, software testing, apple watch application, ipad app development, Startup consulting 𝗔𝗽𝗽 𝗙𝗲𝗮𝘁𝘂𝗿𝗲𝘀: In-App Purchases, User Authentication, User Profile Creation, Social Media Account Integration, Bluetooth, Chat & Messaging Software, In-App Searches, Location-Based Services, Map Integration, In-App Advertising, Payment Functionality, API Integration, Microphone, Motion Sensor, Push Notifications, API, system Administration, social media plugin, User Experience Design 𝗠𝗼𝗯𝗶𝗹𝗲 𝗣𝗿𝗼𝗴𝗿𝗮𝗺𝗺𝗶𝗻𝗴 𝗟𝗮𝗻𝗴𝘂𝗮𝗴𝗲𝘀: Java, Objective-C, Swift, Kotlin, JavaScript, PHP, TypeScript, Ruby, Python, CSS 3, HTML5, C, Elixir, Dart, GraphQL, Laravel, sirikit, AVkit, storekit, PushKit 𝗠𝗼𝗯𝗶𝗹𝗲 𝗔𝗽𝗽 𝗗𝗲𝘃 𝗧𝗼𝗼𝗹𝘀: Ionic Framework, Firebase, Google Analytics, React Native, Xamarin, Angular, React, Amazon Web Services, Node.Js, Apple Xcode, Flutter, Android App Development, Android SDK, iOS Development, iOS SDK, OpenAI API, RESTful Architecture, User Interface, React.js, Next.js, Vue.js, AngularJS 𝗠𝗼𝗯𝗶𝗹𝗲 𝗣𝗹𝗮𝘁𝗳𝗼𝗿𝗺𝘀: iOS, Android, Microsoft Windows, iPadOS 𝗗𝗲𝘃𝗶𝗰𝗲𝘀: Smartphone, Tablet, Personal Computer You can either hire someone who is cheap and doesn't know stuff and you do it with them; OR, hire someone who knows what they are doing and gets you results so you can focus on your business development and growth.
    vsuc_fltilesrefresh_TrophyIcon REST
    Enterprise Architecture
    Internet of Things
    Solution Architecture
    Agile Software Development
    Software Consultation
    Mobile App Development
    RESTful Architecture
    Amazon Web Services
    Firebase
    In-App Purchases
    JavaScript
    Flutter
    React Native
    Android App Development
    iOS Development
  • $95 hourly

    • 4.1/5
    • (11 jobs)
    Solutions Architect With a decade of experience, I am an automation expert and provide strategy consulting for data analysis and report generation. As a Data Engineer, my background includes data governance, data quality, data architecture, Azure, AWS, UiPath, algorithm development, ETL/ELT, API development, Tableau/Pentaho, and web app development. My projects have solved interface and efficiency issues through contract work for companies like Merrill Lynch, ContractRx, and the City of Baltimore. I have additionally worked for "smaller" companies in the Healthcare space. My clients are executives and business owners who work with large or sensitive data sets. Some are unaware of the capabilities of technology and the large amount of work time saved through data automation. With my assistance, our clients can streamline their business intelligence pipelines - often cutting costs and saving thousands of work hours per year. The most commonly requested projects typically include: - Executive dashboard creation and automatic report generation - ETL design and process automation - Generating new data or or external files based off input data - Cloud migration, database modeling and design, improving data pipelines - Enterprise app development and internal web tools - Creating aggregate data feeds for tools like Tableau/PowerBI/Pentaho - Data Integration (APIs, AWS pipeline) Languages --------------------------------------------------------------------------------------- SQL, Java, PLSQL, VB, Perl, Python, ASP, .NET, BASIC, C++, PHP, Ruby on Rails, JavaScript, HTML, XML, jQuery Databases --------------------------------------------------------------------------------------- Oracle, SQL Server, PostgreSQL, MySQL, DB2, and Access If you have a larger or more complex project in mind, my team of skilled developers will provide you with a solution at a blended rate. If interested, please ask for details. I offer discounts for repeat clients or larger projects (500+ hours). Feel free to contact me if you have any questions - you can typically expect a reply within a day. Thanks for reading
    vsuc_fltilesrefresh_TrophyIcon REST
    Business Intelligence
    Redis
    AWS CloudFront
    HTML5
    RESTful Architecture
    Microsoft Azure
    Microsoft Azure SQL Database
    Database Integration
    Node.js
    Linux
    PostgreSQL
    ETL Pipeline
    Database Programming
    Python
  • $80 hourly

    • 5.0/5
    • (20 jobs)
    As an adept Full-Stack Developer with over a decade of hands-on experience in web application development, I bring to the table a commanding blend of technical know-how and a results-driven approach. My career is distinguished by a passion for innovation and my capacity to navigate the full spectrum of the software development lifecycle with agility and precision. My professional mantra is centered around transforming strategic vision into operational reality. I am particularly adept at steering projects from inception through to successful completion with a steadfast focus on delivering scalable and high-performance technical solutions. My commitment to excellence is underpinned by a methodical process: 1. In-depth Research 2. Rapid Prototyping 3. Agile Development 4. Continuous Iteration 5. Timely Delivery Core Competencies: 1. Frontend: JavaScript (including jQuery and TypeScript), Angular, React.js, Vue.js, Flutter 2. Backend: Node.js, Python, PHP, Ruby, with frameworks such as Django, Laravel, and Ruby on Rails 3. APIs: Extensive experience with GraphQL, REST, and third-party integrations 4. Databases: Proficient with PostgreSQL, MySQL, MSSQL, as well as NoSQL options like MongoDB 5. Cloud Platforms: Skilled in deploying and managing applications on Google Cloud Platform and Amazon Web Services What truly sets me apart is my unwavering belief that my client’s achievements reflect my own. I thrive on solving complex challenges with cutting-edge technology, constantly refining my skills and contributing to my clients' success. My robust portfolio of successfully delivered projects stands as a testament to my dedication and capability. I am eager to forge a lasting partnership to bring your next project to fruition. For a committed ally in your digital endeavors, I invite you to connect. Your queries are always welcome, and I look forward to a productive collaboration.
    vsuc_fltilesrefresh_TrophyIcon REST
    Amazon Web Services
    Next.js
    MySQL
    TypeScript
    JavaScript
    PostgreSQL
    Django
    Node.js
    NestJS
    React
    Clojure
    RESTful Architecture
    Laravel
    Vue.js
    GraphQL
  • $80 hourly

    • 3.3/5
    • (42 jobs)
    I am a mobile development expert with rich experiences and strong skills at building mobile app development. My expertise : - Social networking applications - Food delivery applications - Music player applications - Augmented reality (AR applications) - Dating applications - Fintech applications - E-commerce applications My core skill set: - Android ( Java / Kotlin) - iOS ( Swift / Objective C) - KMP (Kotlin Multiplatform) - Cross-platform app development ( Flutter) - RxJava , Dagger 2 , Koin, Kodein, Hilt , ButterKnife, Retrofit - Coroutines , Jetpack Compose - ArCore , OpenCv, ArKit - XML/JSON, REST/SOAP - Geolocation services , Firebase , In App Purchase , Android NDK - Social networks integration ( Facebook, Twitter, Instagram) - Github, Bitbucket, Gitlab - App architecture ( MVVM , MVP), Android Jetpack. I will keep your deadline and guarantee high quality.
    vsuc_fltilesrefresh_TrophyIcon REST
    Git
    Sketch
    Core Java
    JetPack
    Model View ViewModel
    Kotlin
    Firebase
    Gradle
    Mobile App Development
    Android App Development
    RESTful Architecture
    Android Studio
    iOS
    iOS Development
  • $40 hourly

    • 5.0/5
    • (2 jobs)
    My professional career has centered around being an enterprise-level Software Engineer with a focus on front-end technologies. I have extensive enterprise-level experience in Angular, C#, HTML, CSS, Javascript, and Typescript development in both back-end and front-end. I also have expertise in VS Code, Visual Studios, SQL Server Management Studio, IntelliJ IDEA, DataGrip, WebStorm, Git, and Trello developer tools. I thoroughly enjoy working on complicated problems and taking the time to do the job the correct way. I also like to build a trusting relationship with those I work with and pride myself on being open and honest about work and scheduling.
    vsuc_fltilesrefresh_TrophyIcon REST
    .NET Core
    MySQL Programming
    Automated Testing
    RESTful Architecture
    .NET Framework
    C#
    CSS
    Angular
    Amazon Web Services
    JavaScript
    HTML
    SQL
  • $85 hourly

    • 5.0/5
    • (74 jobs)
    Constantly curious .NET developer with a strong background in C#, ASP.NET, and Microsoft Azure. Loves learning about new cloud developments and bringing ideas to life. Most of our ideas start with the dream of becoming something much bigger and more capable. To realize this, your projects need a proper foundation to set it up for future success. In all my engagements - I consult with my clients to understand exactly what they are trying to achieve. - I develop client’s applications following industry best practices. Including... o Abstractions o Unit Testing o Source Control - I work with my client to deploy their application. Either with CI/CD or manually. - Continue supporting application after deployments. I look forward to working with you on bringing your ideas to life.
    vsuc_fltilesrefresh_TrophyIcon REST
    Single Sign-On
    OAuth
    Azure App Service
    Blazor
    B2C Marketing
    User Identity Management
    Microsoft Azure
    RESTful Architecture
    ASP.NET Core
    ASP.NET MVC
    SQL
    Azure Cosmos DB
    API
    .NET Framework
    C#
  • $85 hourly

    • 5.0/5
    • (1 job)
    Oracle Certified Java Programmer, Sun Web Component Developer with Java (J2EE) development experience of more than 18 years: Hibernate, Spring (MVC, AOP, Transaction management), Struts, JSP/Servlet, JUnit, Tomcat, BEA/Oracle Weblogic, Kubernetes, AWS, Ajax, Javascript,JQuery, Postgres, Mysql, Oracle. Extensive experience in developing large-scale applications for Fortune 500 Companies spanning verticals like Pharmaceuticals, Insurance, Finance, Marketing, Technology. Developed complex integration products for Enterprise applications with WMS/JDA, Oracle ERP(11i), SAP, SAP Marketing Cloud, etc.
    vsuc_fltilesrefresh_TrophyIcon REST
    PostgreSQL Programming
    Core Java
    RESTful Architecture
    Hibernate
    Java
    Spring Framework
    SQL
    Apache Struts
    Oracle Database
    Spring Boot
  • $37 hourly

    • 5.0/5
    • (4 jobs)
    Hello, I am a python/ javascript developer with over 5 years of experience in a wide range in professional web development. I have a strong knowledge of JavaScript and Python. Moreover, I am super flexible with AWS and Google Cloud Platform. I work on both backend and frontend My main focus with: - Python, Django - ReactJS, AngularJS, Vue.js - PostgreSQL, MySQL, MongoDB - Amazon AWS EC2, S3, SES, SQS, Boto3 - Git, bitbucket - Fluent English communication - Flexible Timezone - More Thanks for your time and consideration. Best Regards Miguel
    vsuc_fltilesrefresh_TrophyIcon REST
    Python Script
    API Development
    RESTful Architecture
    AngularJS
    Django
    jQuery
    Python
    PHP
    JavaScript
    Vue.js
  • $43 hourly

    • 5.0/5
    • (8 jobs)
    Hardworking, dedicated, and utmost concerned with client satisfaction. I wrote my first line of code at the age of 12, and I haven't stopped since. I like to work on long and devious projects that test my skills, and force me to get outside of my comfort zone. Additionally, I have a knack for learning new programming languages, frameworks, and libraries quickly. In my free time, I enhance my technical knowledge by learning new techniques, and strategies for solving complex problems effectively. I never stop learning new things!
    vsuc_fltilesrefresh_TrophyIcon REST
    Linux
    Database
    DevOps
    RESTful Architecture
    JavaScript
    Git
    Bootstrap
    Shopify
    PHP
    Vue.js
    Ruby on Rails
    Node.js
    MySQL
    Ruby
  • $40 hourly

    • 5.0/5
    • (37 jobs)
    I am primarily a Python developer, but also have Front-End experience and additionally have a lot of Pinescript experience. The following is a list of projects for which I'd be a good match: - Web scraping/ Data Aggregation - Tradingview Indicators and Strategies - Tradingview Alerts Execution for Trading via Brokerage APIs - Building an API - Building command line utilities - File conversion, data manipulation - Building a Full Stack Application - Fixing or rewriting Python applications - Plugins for existing applications that can be written in Python - Any tasks/reports that could be automated - Generally anything that could be achieved with Python, though I have limited ML experience Bonus skills: Audio Synthesis (Sound Effects) Original Composition Audio Production and Editing
    vsuc_fltilesrefresh_TrophyIcon REST
    RESTful Architecture
    API
    Django
    Flask
    Google Apps Script
    API Integration
    Python
    API Development
    JSON
    React
    API Documentation
    Automation
  • $80 hourly

    • 5.0/5
    • (6 jobs)
    Experienced and professional Software Engineer with over ten years of valuable experience in developing and maintaining Web&Mobile applications and backend development on various platforms. In those of years of service, I had a few good opportunities to work with big companies and to help a medium-sized agency. I always look forward to meeting new clients and helping them with realizing their imaginations and with full- filling their needs. I believe that is the best way to put myself to good use for myself and my clients. My technical skills include: - React(Redux, Redux-Saga, Redux-Thunk) in Javascript / Typescript - Node.js, Express.js, Python, Java, C#, PHP - React Native, Swift/Objective-C, Java/Kotlin - Core-components and APIs - Firebase (Firestore, Firebase Authentication, Firebase Storage, FCM) - Unit Testing with Jest/Enzyme, Mocha/Chai - GeoLocation, Camera, Mapbox, IAP, Twilio, Navigation, Video/Audio Player, etc
    vsuc_fltilesrefresh_TrophyIcon REST
    Ecommerce Website
    jQuery
    CSS
    iOS Development
    RESTful Architecture
    TypeScript
    Node.js
    React
    Swift
    Firebase
    Kotlin
    HTML5
    Java
    JavaScript
    React Native
  • $250 hourly

    • 4.8/5
    • (22 jobs)
    I bring many years of experience and can handle any type of job. My current passion is supporting enterprise-scale platforms development for clients that delight and wow! I am most effective when working on stream processing (real-time data, video streaming, real-time messaging, and live streaming) in Kafka, Kinesis, Agora with AWS, Node/Javascript, Flutter. Also, I am familiar with Big Data, ETL pipeline, oracle, SQL server, snowflake from designing the table and schema structures to creating functions, table functions, snow pipes, AWS external stages, streams, procedures, external functions, etc. I can help modernize or update older PHP sites to newer React/Vue.js-based technologies and use standard frameworks that are easier to maintain and more performant.
    vsuc_fltilesrefresh_TrophyIcon REST
    WebRTC
    Machine Learning
    Agora.io
    SQL
    Software Architecture & Design
    GraphQL
    RESTful Architecture
    C#
    API Integration
    Web Development
    JavaScript
    React
    Node.js
    Vue.js
    Python
    Web Application
  • $35 hourly

    • 5.0/5
    • (2 jobs)
    Testimony: "...in a couple (of) days, you did what no one else has been able to do in 5 years. You're awesome" "I can't convey enough how much I appreciate how organized your methods are" "It's working beautifully! rail grinding feels good, jumping and steering feels great, attacking is great. Amazing job on all of this!" "No disrespect to any of the talent who helped me in the past - I appreciate them all - but this is the level of quality I've been wanting this whole time" Welcome to my profile! Ready to elevate your gaming experience? Video games are a delicate blend of art and technology. To immerse a player, every component—code, graphics, mechanics—must work in harmony, creating a captivating alternate reality. Navigating the challenges of this intricate process can be daunting, but that's where I come in. Whether it's debugging, designing game mechanics, graphics programming, or any aspect of game development, I'm here to support every step of your journey. I'm Mike, a dedicated software engineer with a deep-seated passion for video game development. Armed with extensive experience in Unity and a personal code library, I relish working in interdisciplinary teams. I understand that the magic happens when different talents converge, and that's what drives me to create phenomenal products. My expertise spans from developing desktop applications to collaborating with quality assurance teams, ensuring a polished final product. But there's more to me than just code. While programming is my forte, I have a genuine appreciation for art and often indulge in various creative endeavors. This blend of technical proficiency and creativity infuses fresh, innovative perspectives into my projects. To me, the fusion of art and code isn't just a job—it's where my soul thrives.
    vsuc_fltilesrefresh_TrophyIcon REST
    .NET Core
    .NET Framework
    ASP
    RESTful Architecture
    API
    ASP.NET Web API
    ASP.NET
    RESTful API
    Object-Oriented Design
    Object-Oriented Programming
    Software Debugging
    JavaScript
    C#
    Unity
    Java
  • $40 hourly

    • 5.0/5
    • (4 jobs)
    I specialize in developing 𝙍𝙚𝙖𝙘𝙩/𝙉𝙤𝙙𝙚/𝙏𝙮𝙥𝙚𝙎𝙘𝙧𝙞𝙥𝙩 web applications as a full stack Javascript web developer. My development experience has given me the right skills to work alone or with team. My main tools are the following: 1- Programming languages: JavaScript, Typescript 2- Frameworks & libraries: React.js, Next.js, Apollo GraphQL, Jest, Redux. 3- Other: Git, HTML5, CSS3, SASS, Ant Design, Bootstrap, BEM and many more. As a full Stack developer, These are my major projects 1- Transportation Application (𝗟𝗶𝘀𝘁𝗲𝗱 𝗼𝗻 𝗡𝗮𝘀𝗱𝗮𝗾, SWVL), I was responsible for Managed Arrival time projects using MERN stack, Kubernetes, DataDog, AWS, and Google Cloud. Implemented CI/CD pipelines with GitHub Actions and Jenkins. 2- AI Based task management for design (𝗗𝗲𝘀𝗶𝗴𝗻𝗣𝗿𝗼), I was responsible for developing a platform connecting designers and clients using Javascript, MERN Stack, PostgreSQL, AWS, Bitbucket Pipelines, and React. 3- Real Estate CRM development (𝗭𝘂𝗿𝗽𝗹𝗲), The platform combines online lead generation with automated intelligent lead nurturing, so real estate agents can create more meaningful connections and get more clients. Possessing a strong grasp of both frontend and backend technologies, I hold a thorough comprehension of the development lifecycle. I am looking forward to work as a web full stack developer using my core strengths around Javascript, React, Node and Typescript.
    vsuc_fltilesrefresh_TrophyIcon REST
    Web Application
    Full-Stack Development
    ExpressJS
    RESTful Architecture
    API Development
    Amazon Web Services
    CI/CD
    Web Development
    TypeScript
    JavaScript
    GraphQL
    Node.js
    React
    Next.js
  • $150 hourly

    • 5.0/5
    • (2 jobs)
    I lead analytics and engineering teams by day and I love to write great code by night. I have experience creating reliable and maintainable data pipelines and analytics tools for a wide variety of clients with varied infrastructures and architectures. - I'm experienced designing data systems, especially in high-risk or highly sensitive environments. - I have a deep knowledge of modern data infrastructure, especially SaaS ETL tools like Fivetran, transformation frameworks like dbt, data destinations such as Snowflake and Redshift, and data provisioning and visualization tools such as Looker and Tableau. - I'm ready to tackle small pieces of work independently or coordinate with a team to deliver complex and challenging projects.
    vsuc_fltilesrefresh_TrophyIcon REST
    RESTful Architecture
    Snowflake
    dbt
    Fivetran
    Outbound Sales
    Business Management
    ETL Pipeline
    Management Skills
    RESTful API
    Sales
    ETL
    Business Operations
    Python
    Looker
    SQL
  • $35 hourly

    • 5.0/5
    • (1 job)
    I'm able to build a robust website from scratch using Chatgpt, Midjourney, Movio, Figma for creating image, video, text content and beautiful UI/UX friendly layout. I’m a full stack developer with experience in building websites for small and medium sized businesses. Whether you’re trying to win work, list your services or even create a whole online store – I can help! I’m experienced in HTML, CSS, JavaScript, Next.js, Ruby, Ruby on Rails, Heroku, PostgreSQL, Node.js, React and etc... I’ll fully project manage your brief from start to finish Regular communication is really important to me, so let’s keep in touch!”
    vsuc_fltilesrefresh_TrophyIcon REST
    React Native
    Front-End Development
    Agile Software Development
    Docker
    RESTful Architecture
    React
    HTML
    Node.js
    JavaScript
    Web Application
    Ruby on Rails
    Amazon Web Services
    PostgreSQL
    Responsive Design
  • $75 hourly

    • 5.0/5
    • (1 job)
    I have been working with “IT” and computers since the 1980s. I put myself through college (BS Computer Science, BS Mechanical Engineering) in the 1990s working as the IT Technician and DB Administrator for a small Department at my University. After graduation, I spent the first half of my career working for an electronics Manufacturer as a developer, as a “consumer” of IT, and in various management and market development roles. The past 15 years of my career has been as the Managing Partner of Badger Consulting. At Badger Consulting I apply my 30 plus years of experience to help small and medium sized businesses with their IT and data needs. With some companies we provide focused solutions to quickly add value. For others we are their only “IT support” and by necessity fulfill a jack-of-all-trades role. I have a passion for Manufacturing and ERP/MRP systems, making better use of those systems and linking them (using desk top apps, RESTful APIS etc) to other systems. I have a knack for identifying the right solution to a given “IT challenge”. I have designed and implemented solutions ranging from simple VBA enabled Excel sheets to a multi-app, client-server based (C#/MS SQL/REST API) solution fully integrating an automated stockroom carousel with a client's ERP system.
    vsuc_fltilesrefresh_TrophyIcon REST
    SQL
    Windows 10 Administration
    C#
    Project Management
    Visual Basic
    VoIP Administration
    RESTful API
    Office Administration
    RESTful Architecture
    ERP Software
    Data Analysis
    Microsoft Server
    Microsoft SQL Server
    Server & Virtualization Software
  • $150 hourly

    • 5.0/5
    • (3 jobs)
    I'm a full stack Rails developer with experience at two fast paced SaaS startups. Looking for interesting projects to start or join.
    vsuc_fltilesrefresh_TrophyIcon REST
    API
    Heroku
    PostgreSQL
    RESTful Architecture
    SaaS
    Ruby on Rails
    React
    Responsive Design
  • $60 hourly

    • 5.0/5
    • (1 job)
    Hey there, I'm Alex. I've spent a decade coding and learning what I love, like, and could see improvement for in the software world. With experience in music, travel, delivery, and healthcare, I feel confident in all aspects of software engineering, architecture, and design. - I can build from scratch or develop within any existing backend systems - I love the process and interworking between Engineering and other teams to design a product or feature from start to finish, creating the architecture for it, and building it - I prefer to think often from the customer's viewpoint, and work hard to ensure a steady vision between engineering, product, sales, and what is being delivered.
    vsuc_fltilesrefresh_TrophyIcon REST
    OKTA
    Django
    AWS Development
    Terraform
    RESTful Architecture
    SQL
    React
    Kubernetes
    Python
    Docker
    JavaScript
    PostgreSQL
  • $45 hourly

    • 5.0/5
    • (1 job)
    I’m a Python Developer with a background in full stack web development using JavaScript, HTML5, CSS3 and MongoDB. I have developed multiple full stack applications using RESTful architecture with user authentication as well as performed extensive data analysis. Projects I’ve completed have included but are not limited to: - Building Flask applications dependent on implementation of libraries such as WTForms, SQLAlchemy and Flask-Bootstrap/wtf.html that used bcrypt with multiple salt rounds to encrypt user data to avoid plain-text data storage in a PostrgreSQL database - Engineering data visualizations via Matplotlib and Plotly based on Pandas dataframes extracted from CSV files in Jupyter Notebook, Google Colab and Datalore - Using OOP to create notification services by combining the smtplib library and/or Twilio library and API with numerous 3rd party APIs from Spotify’s to Kiwi by Tequila - Deploying multiple MERN (MongoDB, Express, React.js, Node.js) stacks that solved problems such as finding golf courses by proximity to any user-provided zip code in the United States and providing reservation and contact information for those courses I believe that software development is problem-solving at its essence. No problem is solved in a cost and time-efficient manner without clear and concise yet effective communication. I will communicate with strict adherence to this standard to ensure deliverables are on schedule and tailored to your specific needs.
    vsuc_fltilesrefresh_TrophyIcon REST
    Django
    Beautiful Soup
    API Development
    SQLite
    PostgreSQL
    CSV
    React
    RESTful Architecture
    Selenium
    API Documentation
    Flask
    Matplotlib
    Python
    pandas
    SQL
  • $40 hourly

    • 5.0/5
    • (1 job)
    Hi, I'm Tony, a full-stack web developer with over 7 years of experience. I specialize in both frontend and backend development, which means I can take on projects from start to finish or collaborate with existing teams. Technical Skills I have expertise in the following technologies: Frontend Development 🟢HTML/CSS 🟢JavaScript 🟢jQuery 🟢ReactJS 🟢Vue.js 🟢AngularJS 🟢Bootstrap 🟢Foundation 🟢Sass/LESS/Stylus 🟢Grunt/Gulp/Webpack 🟢Photoshop/Illustrator Backend Development 🟢PHP (Laravel, CodeIgniter) 🟢Python (Django, Flask) 🟢Node.js (Express.js) 🟢Ruby (Rails) 🟢MySQL 🟢MongoDB 🟢PostgreSQL 🟢RESTful API Design and Integration 🟢Git/GitHub Services Offered Here are the services I offer as a full-stack developer: 🟢Building custom websites and web applications from scratch. 🟢Developing responsive designs that work on all devices. 🟢Creating UI/UX designs that are both aesthetically pleasing and functional. 🟢Developing RESTful APIs and integrating them into web projects. 🟢Debugging and fixing issues in existing code. 🟢Providing ongoing maintenance and support for web projects. Why Choose Me? As a full-stack developer, I am committed to delivering high-quality work that meets or exceeds my clients' expectations. I am dedicated to providing excellent communication, timely delivery, and a collaborative working relationship throughout the project lifecycle. I am also a quick learner and can adapt to new technologies and frameworks quickly. If you're looking for a talented and reliable full-stack developer, please don't hesitate to contact me. I look forward to working with you!
    vsuc_fltilesrefresh_TrophyIcon REST
    React
    NestJS
    Responsive Design
    Flask
    Django
    Golang
    GraphQL
    RESTful API
    RESTful Architecture
    Docker
  • $70 hourly

    • 5.0/5
    • (0 jobs)
    I bring extensive expertise in application development, specializing in Java, J2EE, Spring, JPA, Hibernate, React, Angular, and Typescript. With a portfolio encompassing over 100 applications, I excel in Event-Driven Architecture, Microservices, and Backend Web Services development. My hands-on experience emphasizes Test-Driven Development (TDD) and Behavior-Driven Development (BDD) methodologies. Key Skills: - Proficient in Java 8 & above - Expertise in JPA, Hibernate ORM, and Java Concurrency - Strong grasp of Spring Boot, Spring MVC, and Spring Boot Data - Familiarity with Apache Struts, Angular, React, and Microservices - Specialized in RESTful API development - Database proficiency in MySQL, MS SQL Server, IBM DB2, and MongoDB - Experienced with Eclipse IDE, Kubernetes, Docker, and Helm Chart - Skilled in JSP (Java Server Pages), JSF (Java Server Faces), and Thymleaf If you are looking for a dedicated and skilled Software Engineer/Programmer for your project, I am prepared to contribute my expertise within your timeframe.
    vsuc_fltilesrefresh_TrophyIcon REST
    Big Data
    J2EE
    RESTful API
    Spring Data JDBC Extensions
    Kubernetes
    Spring Data
    React
    Angular
    Spring Framework
    RESTful Architecture
    Spring MVC
    Hibernate
    Microservice
    Spring Boot
    Java
  • $35 hourly

    • 5.0/5
    • (2 jobs)
    Independent and self motivated full stack web developer currently looking for a position to further my expertise.
    vsuc_fltilesrefresh_TrophyIcon REST
    API
    ExpressJS
    Node.js
    TypeScript
    CSS
    HTML
    JavaScript
    React
    RESTful API
    RESTful Architecture
    Git
    Web Development
  • Want to browse more freelancers?
    Sign up

How hiring on Upwork works

1. Post a job

Tell us what you need. Provide as many details as possible, but don’t worry about getting it perfect.

2. Talent comes to you

Get qualified proposals within 24 hours, and meet the candidates you’re excited about. Hire as soon as you’re ready.

3. Collaborate easily

Use Upwork to chat or video call, share files, and track project progress right from the app.

4. Payment simplified

Receive invoices and make payments through Upwork. Only pay for work you authorize.

Top cities for REST API Developers in the United States

Show more