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Check out a sample of the 421 API Developer jobs posted on Upwork

$100
Fixed Price

Expert
Experience Level

Our AI engineering team has developed a number of different neural networks that focus on automating aspects of UI/UX design. What we'…

API Developer API Amazon Web Services GraphQL Web Application PostgreSQL Microsoft SQL Server Product Management Jobs Artificial Intelligence Python JavaScript Machine Learning Jobs React Web Development API Development Jobs Data Science TensorFlow Angular Product Roadmap Product Design Jobs Product Development CSS Amazon API Gateway
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FIX Protocol to REST API Fixed-price ‐ Posted 12 hours ago

$2,500
Fixed Price

Expert
Experience Level

Looking to integrate data from FIX to REST API and also have the data added to a SQL database. Happy to consider options to optimize t…

API Developer QuickFIX Jobs RESTful API RESTful Architecture API API Development Jobs
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Less than 30 hrs/week
Hours needed

1 to 3 months
Duration

Expert
Experience Level

In need of a quick job done for one of my client with a Shopify store and there are 3 distributors that we have to set up APIs to flow…

API Developer API Shopify API Integration API Development JobsPostman Jobs
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Laravel Expert full-time WFH Fixed-price ‐ Posted 2 days ago

$250
Fixed Price

Intermediate
Experience Level

Looking for a Laravel expert to create API and backend for mobile apps and create a Netmarketing application and integrate with a Prest…

API Developer API Integration Apache Tomcat NGINX Laravel PHP API MySQL CSS PrestaShop API Development Jobs
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Senior Integration/API Developer Fixed-price ‐ Posted 2 days ago

$650
Fixed Price

Expert
Experience Level

This is a fantastic opportunity to join a fast-growing company and work closely with the Company Founder, so there is immense growth po…

API Developer Software Architecture & Design Database API API Development Jobs API Integration RESTful API JavaScript Node.js Python AWS Lambda
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Operation Management Consultation For Distributor
New
Hourly ‐ Posted 3 hours ago

Less than 30 hrs/week
Hours needed

Less than 1 month
Duration

Expert
Experience Level

We are a distribution company mainly selling to the Goverment but will need to add integration for our Commercial and e-commerce divisi…

API Developer Inventory Management Business Operations Strategy Logistics Management CRM Automation Jobs API API Development Jobs Business Plan
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Looking for API Automation Developer Fixed-price ‐ Posted 15 hours ago

$13,000
Fixed Price

Intermediate
Experience Level

Experience working in prior API testing projects with tools Postman, SOAP UI, swagger UI etc., for functional testing Hands-on Strong…

API Developer API Development Jobs API Automation Java
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$100
Fixed Price

Expert
Experience Level

Hello Upwork team, We have a client who needs a solution to control and manage their social media profiles using whatever you think is…

API Developer JavaScript Laravel Next.js PHP API Integration Full-Stack Development JobsSoftware Jobs Software Development PHP Developer Jobs Script Automated Workflow Jobs Google APIs API Development Jobs
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Backend Developer to build API system Fixed-price ‐ Posted 2 days ago

$200
Fixed Price

Intermediate
Experience Level

Looking to have a developer create and deploy an API for our SaaS product. This project is a high priority and will lead to additional…

API Developer Database Architecture Database Design Web Service API API Development Jobs Database API Integration
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API creation similar to "PushBullet" Fixed-price ‐ Posted 2 days ago

$1,000
Fixed Price

Intermediate
Experience Level

I need to create an API similar to Pushbullet, where the main features are: 1. connect my phone with my laptop 2. be able to send an S…

API Developer API API Development Jobs API Integration API Documentation API Framework Jobs API Testing API Blueprint
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