Hire the best API Developers in Denver, CO

Check out API Developers in Denver, CO with the skills you need for your next job.
  • $60 hourly
    Hello and thank you for reading my profile! My name is Henry and I am at your service. I have been working with Ruby on Rails for four years now. I still love coding with Rails every day. I consider myself a polymath of many computer techonologies, with a strong focus on Web Development, and a strong focus on Rails within Web Development. I choose to focus on Rails because I find that its developers make careful and considerate choices about low level code implementations so that as an application developer I can focus on delivering high level features. Whether you need your current app debugged or you have an idea that you want to design and deploy, I will give you my honest opinion on what your app needs and how long it's likely to take. I have a lot of web development skills: 1. Modeling and implementing your business logic with ActiveRecord and MySQL or Postgres. 2. Deploying to Heroku, using Heroku plugins for SQL, SendGrid, asynchronous tasks and scheduled tasks. 3. Configuring DNS. 4. HTTP protocol examination and debugging including Cross-Origin Resource Sharing and many other headers. 5. Frontend Coding, I especially like StimulusJS, Turbo, and Hotwire as well. 6. Keeping users engaged with push notification technology. 7. Familiarity with Docker. 8. Familiarity with Ansible. 9. Familiarity with Ubuntu Server. I'm looking forwards to joining your project and making a strong contribution. Thank you very much.
    vsuc_fltilesrefresh_TrophyIcon API Development
    Google Maps API
    ECMAScript 6
    Linux System Administration
    Progressive Web App
    Ruby on Rails
    CSS 3
  • $60 hourly
    Welcome! I specialize in crafting efficient software solutions for supply chain giants. With proven expertise honed at Nestle, Barnes & Noble, and Dish Network, I'm committed to optimizing your operations. - Cloud Architecture Leader: Led AWS integration projects, enhancing infrastructure and enabling seamless operations for industry leaders. - API Management Pro: Developed and managed API products, enhancing security and facilitating collaboration across departments. - Data Integration Specialist: Orchestrated seamless integration of SaaS AI tools, optimizing decision-making and establishing new revenue streams. - Outage Mitigation Expert: Mitigated production outages, preserving costs and ensuring continuous operations. Ready to optimize your supply chain? Let's collaborate for efficiency and innovation. Reach out today to start the conversation.
    vsuc_fltilesrefresh_TrophyIcon API Development
    Data Analysis
    NetSuite Development
    Relational Database
    Cloud Management
    NetSuite Administration
    Microsoft Azure SQL Database
    Data Visualization
  • $62 hourly
    Hello there! My name is Whitley and I'm a tenacious product management professional who is well versed in product life cycle frameworks. I have an exemplary track record spanning five years of dissecting complex ideation issues, prioritizing user experience, and designing unique implementation management solutions for SAAS customers. I'm also currently enrolled in in the Google UX Design certification program. I am an incredibly hard worker, dedicated and task-oriented. My projects tend to run ahead of schedule with a high success rate. Stay a conversation, let's see if we're a good fit for each other! :)
    vsuc_fltilesrefresh_TrophyIcon API Development
    Test Results & Analysis
    Management Skills
    Business Management
    Software Testing
    Database Management System
    Beta Testing
    User Experience
    Software QA
    Alpha Testing
    Project Management
  • $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.
    vsuc_fltilesrefresh_TrophyIcon API Development
    Full-Stack Development
    RESTful API
    NoSQL Database
    Solution Architecture
    Amazon Web Services
  • $50 hourly
    Whether you need a best-in-class iOS app, a beautiful website, a dynamic & performant web app powered by the cloud, a custom back-end system to manage your data, or all of the above, I'm the guy for you. I'm a friendly, experienced software engineer that enjoys true full-stack development across web and mobile. I've led software engineering teams, worked by myself, worked at big companies, worked at startups, and everything in between. I'm easy to work with, a clear communicator, and a hard worker. I care about my work and prioritize performance and design above all else. My favorite web technologies to work with: - HTML and CSS - JavaScript / TypeScript - MySQL and PostgreSQL - Front-end web frameworks like React, Vue, and Svelte - Serverless AWS services like Lambda, API Gateway, and DynamoDB My favorite iOS technologies to work with: - Swift - SwiftUI - SwiftData - Core Data - CloudKit Get in touch! Let's build your dream together.
    vsuc_fltilesrefresh_TrophyIcon API Development
    Core Data
    Full-Stack Development
    Serverless Computing
    Web Development
    Back-End Development
    Cloud Architecture
    Front-End Development
    AWS Lambda
    iOS Development
    Amazon Web Services
  • $35 hourly
    Systems Engineer Highly motivated and detail-oriented professional with extensive experience managing and monitoring databases, ensuring data integrity and troubleshooting any database issues. Have knowledge of Maintenance Technician, ensuring the smooth operation of industrial machinery and facilities. Proficient in troubleshooting, repair, and preventative maintenance.
    vsuc_fltilesrefresh_TrophyIcon API Development
    Microsoft Power BI Data Visualization
    Graphic Design
    UI/UX Prototyping
    Database Management
  • $45 hourly
    API Development, Ruby on Rails and Java with Spring Boot Embedded Software Development, Application development for embedded systems using C/C++ (Avionics) and Assembly (AVR® RISC-based microcontrollers) Test Engineering, Test lead for large avionics projects and designed new automated test suites (Python, Hardware design) Website design, HTML and CSS3 with Javascript (Angular, React)
    vsuc_fltilesrefresh_TrophyIcon API Development
    Electrical Engineering
    Spring Boot
  • $125 hourly
    I’m a software manager and decommissioned developer who likes to have fun while we “ship it.” Small team and start-up transformation where I focus. ✅ Application and Project delivery specialist. ✅ Project Management delivering procedures, accountability, and transparency. ✅ Product Ownership to keep the team, mission, and delivered product aligned. ✅ Agile Transformation (Scrum Master). ✅ Fractional CTO services to mentor and lead engineering and software development. Success comes by way of my software-first and business-friendly leadership. Consistent delivery and honesty allow start-ups and agency projects (apps, cloud, technical demands) to ship. From operating in stealth early stages to pre-acquisition (prototype to final version), all products improve with solid leadership and hard work. Where the rubber hits the road is generally in engineering departments. I have lived the software life for decades and will bring additional value to your project and team. Hardened as CTO, Sr Dev, and Software Architect while working in Manhattan’s “Silicon Alley,” I help clients and teams find greatness. Software is easy to take for granted, and for all the money invested, let’s get it right! Pull me in to deliver context to and from development and business teams. Superpowers include: 🔥 Communicating effectively with people at all levels of an organization. 🌊 Lead, mentor, and inspire teams (even remotely) 🎯 Keeping mission focus and discipline across projects 🔫 Security consciousness and data-sensitive mission-critical work 🚀 Broad experience across many languages, stacks, and frameworks 💸 Stakeholder engagement and management ⚰️ Future-proofing (just kidding)
    vsuc_fltilesrefresh_TrophyIcon API Development
    Startup Consulting
    Agile Software Development
    Cloud Implementation
    Cloud Migration
    Systems Development Life Cycle
    Agile Project Management
    Project Management
  • $105 hourly
    Professional Python developer, data analyst, and quant trader. I can help you develop or code your trading bot, algorithm/robot in Python with execution through the Interactive Brokers IB TWS API. Backtested and optimized algorithms that can be put trading live on supported brokerages, such as Interactive Brokers. I can also build custom trading bots in Python for exchanges that support it, make web UI with Flask, Django, and implement other Python-related tasks. TECHNOLOGIES ✔ Python ✔ SQL (Postgres, MySQL, MSSQL) ✔ Unix/Linux Shells ✔ Statistical Analysis (scipy, numpy, matlab) ✔ AWS (S3, EMR, Lambda, EC2, Postgres) ✔ MongoDB ✔ Machine Learning (SK Learn, Pytorch, Tensorflow) ✔ Docker, Kubernetes QUANTITATIVE TRADING ✔ Portfolio Construction (Mean Variance Optimization, Convex Optimization, Constrained Optimization) ✔ Backtesting (event based, vectorized) ✔ Quant Platforms (Quantopian, QuantConnect, Quantiacs and QuantRocket) API DEVELOPMENT ✔ FIX Protocol ✔ Rest API ✔ Websockets ✔ Interactive Brokers ✔ Trading Technologies ✔ All Major Cryptocurrency Exchanges (HitBTC, Binance, Bitmex, Bitfinex, GDAX, Kraken, Gemini, Poloniex, etc) ✔ IQFeed ✔ Bloomberg API GUI DEVELOPMENT ✔ PyQT ✔ Tkinter ASSET CLASSES ✔ FX (Forex) ✔ Equities ✔ Futures ✔ Cryptocurrencies
    vsuc_fltilesrefresh_TrophyIcon API Development
    System Automation
    Quantitative Finance
    Quantitative Analysis
    Market Analysis
    Algorithm Development
    Trading Strategy
    Time Series Analysis
    Machine Learning
    Data Science
    Deep Learning
  • $60 hourly
    Web3 | agile with a small “a” | Bitcoin class of '17 | GenAI prompt engineering | Snowboard Instructor | DIY’er Dynamic Technical Product Owner with 6+ years of experience in the software development lifecycle, excelling in Agile methodologies and leading high-impact projects in enterprise applications. Proven expertise in driving end-to-end development, enhancing team efficiency through AI tools, and leading cross-functional global teams. Recognized for outstanding contributions to cybersecurity restoration efforts and seamless system migrations. Passionate about leveraging technical and leadership skills in challenging environments to drive innovation and excellence.
    vsuc_fltilesrefresh_TrophyIcon API Development
    NodeJS Framework
    Story Writing
    AI Development
    Software Architecture & Design
    AWS Application
    Scaled Agile Framework
    Tech & IT
    Technical Project Management
    Product Backlog
  • 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.

Trusted by

How do I hire a API Developer near Denver, CO on Upwork?

You can hire a API Developer near Denver, CO on Upwork in four simple steps:

  • Create a job post tailored to your API Developer project scope. We’ll walk you through the process step by step.
  • Browse top API Developer talent on Upwork and invite them to your project.
  • Once the proposals start flowing in, create a shortlist of top API Developer profiles and interview.
  • Hire the right API Developer for your project from Upwork, the world’s largest work marketplace.

At Upwork, we believe talent staffing should be easy.

How much does it cost to hire a API Developer?

Rates charged by API Developers on Upwork can vary with a number of factors including experience, location, and market conditions. See hourly rates for in-demand skills on Upwork.

Why hire a API Developer near Denver, CO on Upwork?

As the world’s work marketplace, we connect highly-skilled freelance API Developers and businesses and help them build trusted, long-term relationships so they can achieve more together. Let us help you build the dream API Developer team you need to succeed.

Can I hire a API Developer near Denver, CO within 24 hours on Upwork?

Depending on availability and the quality of your job post, it’s entirely possible to sign up for Upwork and receive API Developer proposals within 24 hours of posting a job description.

API Developer Hiring Resources
Learn about cost factors Hire talent