Find the Best API Jobs in Union City, NJ
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Check out a sample of the 58 API jobs posted on Upwork
AI/Automation Developer – Python, LLMs (ChatGPT, Gemini), Workflo…
Hourly ‐ Posted 2 months agoHours needed
Duration
Experience level
We’re looking for a skilled developer to help streamline and automate our workflows long-term. This role involves building and maintain…
Shopify Architect (Senior Developer)
Hourly ‐ Posted 7 days agoHours needed
Duration
Experience level
We are seeking an experienced Shopify Architect to lead the design, development, and implementation of complex Shopify and Shopify Plus…
Build Roofing Cost Calculator Funnel with Google Maps / Roof Size…
Hourly ‐ Posted 9 days agoHours needed
Duration
Experience level
We are a residential roofing company looking to build a roofing cost calculator / lead generation funnel. The key requirement is that…
Junior Salesforce Developer
Hourly ‐ Posted 2 months agoHours needed
Duration
Experience level
(HubSpot → Salesforce | RevOps | Integrations) We’re hiring a Salesforce Platform Engineer to help scale and stabilize our revenue inf…
React/Supabase Developer Needed for SAAS Web Application
Fixed-price ‐ Posted 1 day agoFixed-price
Experience level
We are looking for an experienced Full-Stack Developer to continue building out CrewUp, a web application marketplace platform for gene…
Build an MCP server on top of my API and samples
Hourly ‐ Renewed 11 days agoHours needed
Duration
Experience level
Looking for an experienced developer to build an MCP Server and a set of AI agents that can answer questions on top of our internal dat…
Founding AI Product Engineer (Flutter + AI Backend)
Hourly ‐ Posted 1 month agoHours needed
Duration
Experience level
About The Role I'm a best selling author (500K+ copies sold), and we’re currently building an AI-powered platform focused on deeply pe…
Full Stack Developer or Team
Hourly ‐ Posted 29 days agoHours needed
Duration
Experience level
Full Stack Developer or Development Team Needed for Ecommerce, Web Apps, APIs, and Custom Integrations Job Description We are looking…
Full Stack Developer Needed for MVP Fixes – NestJS, PostgreSQL, P…
Fixed-price ‐ Posted 1 day agoFixed-price
Experience level
We are looking for an experienced Full Stack Developer to help fix and improve an existing MVP. The project is already built, but we n…
Fix Bugs in LLM & AI Integration
Fixed-price ‐ Posted 29 days agoFixed-price
Experience level
We are seeking an experienced developer to fix bugs in our Next.js application that integrates LLM and AI models with Supabase. The ide…
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