Hire the best Backend Rest API Freelancers in Denver, CO

Check out Backend Rest API Freelancers in Denver, CO with the skills you need for your next job.
  • $60 hourly
    For most of my over 10-year career, I've written and debugged a variety of software and have solved various types of problems. At Techno-Sciences, this was primarily software which handled communication between hardware devices with different protocols, and getting them to work together as a maritime surveillance unit. With Polycom, it was software which handled communication between Polycom's DMA and external hardware components such as phones, web services, and video conferencing devices. Then, with Spectra Logic, I wrote automated test code to debug communication between Spectra's backup software and various hardware storage devices, as well as cloud storage services such as S3. Next, with RK Mechanical, I programmed software to import product and price data from various APIs and data sheets and consolidate it. Currently, with Exolvo Designs Group, I am enhancing software for a search-and-rescue antenna configuration system. In addition to my current contract at Exolvo Designs Group, I'm open to freelance work in any field I find engaging, fields where I can put software together to solve problems and improve my knowledge. Skills: * Golang * github-flow * REST API * React.js * Docker * AWS * SQL Server * Python * MongoDB * Java * C++
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    Selenium
    MongoDB
    C++
    API
    Web Development
    RESTful API
    Microsoft SQL Server
    Python
    JavaScript
    Java
    React
    Git
    Docker
    Data Scraping
    Golang
  • $50 hourly
    Hello there! I'm a skilled and multilingual Full Stack Web Developer with a passion for crafting innovative solutions using cutting-edge technologies. Proficient in English, Persian, and Dari, I specialize in building robust applications and leveraging a diverse set of web technologies, programming languages, and front-end/back-end tools. 🌐 Technical Expertise: Front-End Development: JavaScript, React.js, Angular, Vue.js, jQuery, HTML, CSS3, Bootstrap Back-End Development: PHP, Laravel, CodeIgniter Microservices and Serverless: API, RESTful API, Docker, Swagger UI, Postman API, JSON Database Management: RDBMS, MySQL, phpMyAdmin UX/UI Web Design: WordPress, Material Design, Bootstrap Version Control: Git, GitHub, GitLab, Bitbucket Project Management: Agile Project Management, Scrum Server Side: Node.js, Apache HTTP Server, Linux, cPanel & WHM, Plesk, Webmin 🌟 Key Strengths: - Software Development: Proven expertise in developing high-quality software solutions. - Asynchronous Programming: Proficient in asynchronous programming techniques for optimal performance. - System Administration: Well-versed in server setup and maintenance for seamless operations. - Database Creation & Management: Skilled in designing and managing databases for efficiency. - Team Lead | Project Management: Experienced in leading teams and managing projects effectively. - Solutions Consultant: Adept at providing strategic solutions to complex challenges. - Code Review | De-Bugging: Meticulous in code review and proficient in debugging. - Problem-Solving: Known for solving intricate technical problems with creativity. - Takes Initiative: Proactive and driven, always ready to take the initiative. - Detailed | Organized: Attention to detail and organizational skills for streamlined workflows. - Collaborative: Strong collaborative skills for effective team integration. - Adaptable: Quick to adapt to new technologies and industry best practices. 🌐 Why Choose Me? With a deep understanding of JavaScript, HTML, CSS, Node.js, React.js, PHP, Laravel, and more, I bring both technical prowess and business acumen to the table. I thrive on embracing new technologies and implementing best practices to deliver unparalleled solutions. Let's collaborate and turn your ideas into reality! Looking forward to working together.
    vsuc_fltilesrefresh_TrophyIcon Backend Rest API
    React Native
    Postman
    Docker
    Redux
    RESTful API
    Functional Programming
    MySQL Programming
    React
    JavaScript
    Microservice
    WordPress
    jQuery
    Laravel
    PHP
  • $125 hourly
    Versatile software engineer with 20+ years' experience seeking to utilize my skills and leadership to help bring success to a company. Adaptable, can absorb and apply information quickly, and able to excel independently and work collaboratively. Results-driven and well-versed in a variety of programming languages. I specialize and love helping companies move their infrastructure and web applications to a serverless architecture. Skills/Specialties: NodeJS, React, AWS, Lambda, NoSQL, SQL, CI/ CD, Testing, DevOps, Architecting, Authentication/Authorization.
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    API Development
    Full-Stack Development
    RESTful API
    NoSQL Database
    Solution Architecture
    SQL
    DevOps
    Firebase
    TypeScript
    Node.js
    React
    GraphQL
    Amazon Web Services
  • $30 hourly
    Next.js/React Full Stack Developer with 7-8 years of programming experience. Music composer with 2+ years of Ableton experience, 10+ years of piano experience, 8+ years of alto saxophone experience (although I don't play sax anymore).
    vsuc_fltilesrefresh_TrophyIcon Backend Rest API
    Data Structures
    Version Control
    RESTful API
    Google Cloud Platform
    Tailwind CSS
    GraphQL
    Next.js
    jQuery
    Docker
    Python
    Git
    React
    SQL
    Node.js
    JavaScript
  • $100 hourly
    I'm an experienced and boundlessly passionate full stack engineer that thrives in bringing concepts to life blazingly fast. My biggest strength is going through the vision → idea → design mock up → proof of concept → MVP / MLP (Minimum Loveable Product) cycle incredibly fast. Experience both in industry and personal startup projects has created a blend of skills including fast prototyping, scalability, mobile responsiveness, CI/CD, automated test setup, web development, documentation, design work, and user experience research. I've worked closely with product / design teams my entire career but also can own and drive those two areas by myself. My personal passion lies in intuitive design and products and interfaces that are a delight to use. I've spent my entire career advocating for the end user and pushing for user experiences that are both easy to use and easy to rave about to other people. Books such as "The Design of Everyday Things" by Don Norman are where I gain inspiration from. I live for bringing ideas from vision to concept to a working product and polishing until perfection is reached. My attention to detail is profound and I enjoy making beautiful software that moves and inspires humanity
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    JavaScript
    Design & Usability Research
    React
    HTML
    ExpressJS
    CI/CD
    Entrepreneurship
    Responsive Design
    Progressive Web App
    Cypress
    Testing
    CSS
    API Development
    MongoDB
    RESTful API
  • $55 hourly
    ✨ 6+ Years of Experience | 0->1 Product Builder ✨ I specialize in Webflow + Wized + Xano development and I help ambitious teams overcome their execution anxiety by quickly delivering powerful and scalable software. My name is Johnny, I'm a technical co-founder of fintech SaaS Finmo (Acquired by Rocket Mortgage), former Director @ Antler VC and full-time contract software developer. Skills + Overview: 🚀 Proven 0 -> 1 Product Builder 🚀 UI / UX Design Pro with Figma 🚀 Webflow + Wized Front-End Specialist 🚀 Xano Backend Migrations & APIs 🚀 OpenAI & LLM App Experience 🚀 Strong Communicator & Fast Mover I'm working with select projects at a limited time introductory UpWork rate. Want to see if we're a fit? Let's book a complimentary consultation and chat about it. I'm looking forward to learning more about your project!
    vsuc_fltilesrefresh_TrophyIcon Backend Rest API
    RESTful API
    Airtable
    API Integration
    SaaS
    AI Development
    Automation
    Zapier
    Search Engine Marketing
    Figma to Webflow Plugin
    UI/UX Prototyping
    JavaScript
    CSS
    Web Development
    Web Design
    Webflow
  • $45 hourly
    Technically astute professional with proven expertise in developing highly scalable software solutions. Adept at developing complex web applications using various programming languages, such as C#, Python, and SQL. Ability to design, develop, and implement test plans, execute corrective actions, and drive significant cost savings. Skilled in enhancing usability of software for valuable clients and troubleshooting complex problems as well as ensuring timely completion of prescribed duties across project-based environments. Natural talent for establishing credibility and rapport with all levels of management. Areas of Expertise * Software Development * Complex Problem Resolution * API Creation & Implementation * Project Planning & Execution * Backend Development * Process Efficiency * Cross-functional Collaboration in Agile environment * Tools Automation & Web Design * Astute Communication
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    Data Analysis
    Microservice
    RESTful API
    LookML
    Looker
    BigQuery
    SQL
    C#
    Python
    Software Development
  • $120 hourly
    ✅ Top 1% Expert-Vetted Freelancer on UpWork with 5.6k hours ✅ What people have said about working with me ⭐️⭐️⭐️⭐️⭐️ "Gabe is an absolute rock-star developer! He is very skilled, easy to work with, and has a deep understanding of what it takes to build high-quality apps." ⭐⭐⭐⭐⭐ "Gabe's communication, dedication, and ability to meet deadlines are all top-notch." ⭐⭐⭐⭐⭐ "Gabe was incredible. He went above and beyond. Looking forward to working with him more!"" Services I offer 📱 End-to-end app development for Android, iOS, and Web from scratch ✏️ Technical content creation, including blogs, vlogs, and social media management Why choose me for your next project ✅ Achieved Top 1% status on UpWork within my first year, showcasing my dedication and expertise. ✅ Exceptional client feedback underlines my commitment to delivering top-notch work. ✅ Successfully launched over 10 mobile apps on the app store as a freelancer on UpWork Hi 👋 I'm gabe, I have over 5.6k mobile development hours on UpWork with multiple 5 star reviews and a growing portfolio of top rated mobile apps. I've helped multiple clients take their mobile apps from idea to release and would be happy to assist you with your mobile app. Looking forward to working with you, Gabe
    vsuc_fltilesrefresh_TrophyIcon Backend Rest API
    RESTful API
    Tailwind CSS
    JavaScript
    React Native
    Firebase
    Smartphone
    Android
    iOS
    Mobile App Development
    React
  • $30 hourly
    I am a full-stack developer with 8+ years of professional experience in web development. My expertise lies in React/JS, Node/Express.js, Spring, and J2EE. The bulk of my professional time has been spent building APIs (REST | SOAP | Node | Spring), implementing frontend designs (React | Tailwind) and managing DBs (MySQL | JDBC | Mongo). Both professionally and in my personal life, my specialty has been building smaller apps from the ground up using React, Node.js, Spring and Python. What sets me apart is my ability to tackle the unexpected problems that emerge during the development process. I am always willing to dive deep and go the extra mile to ensure the team stays on track, a skill I believe is necessary in the field of freelancing! By hiring me, you can rest assured that I will do whatever it takes to meet the needs of your project! Below is a list of technologies I am proficient in. If you are in need of a highly motivated individual who will guarantee delivery on any of the technologies listed below, then I am the developer for you! Check out my portfolio website @ zpete.dev (link below) or my GitHub to get a sample of my high quality work! My calendar connections are always up to date; please don't hesitate to schedule a chat FREE OF CHARGE! ● Languages: - Java - JavaScript - Python - SQL - HTML5/CSS3 ● Frontend Frameworks: - React - Tailwind - Bootstrap ● Backend Frameworks: - Node.js - Express.js - Spring Boot - J2EE ● Databases: - MySQL - MongoDB ● Technology I'm comfortable working with: - Figma - Docker - NGINX/Caddy ● Cloud Platforms: - Amazon Web Services (AWS) ● ORM - JPA ● Build Tools - Maven - Gradle ● Version Control System: - Git - GitHub - ClearCase/ClearQuest
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    MySQL
    MongoDB
    Python
    CSS
    HTML
    React
    Spring Boot
    Node.js
    JavaScript
    RESTful API
    API
    Amazon Web Services
    Web Application
    Web Development
  • $30 hourly
    - Experienced team leader with a decade of proven success in driving growth, achieving KPIs, and optimizing strategies. - Skilled in workforce management, data analytics, and passionate about leveraging technology to create efficient solutions. - Software Engineering seeking to contribute my expertise in back-end & front-end development and emphasizing proficiency in languages/frameworks such as Ruby, Rails, SQL, ActiveRecord, React, JavaScript, and HTML.
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    CSS
    Service-Oriented Architecture
    RESTful API
    Miro
    Trello
    GitHub
    Git
    HTML5
    PostgreSQL
    Capybara
    RSpec
    Ruby
    JavaScript
    React
    Ruby on Rails
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