Find the Best Back-End Developers Jobs
Check out a sample of the 1,473 Back-End Developers jobs posted on Upwork
Senior Product Designer + Front-End Engineer | Consumer Membership + Sweepstakes Platform
Hourly ‐ Posted 2 days agoHours needed
Duration
Experience level
We're launching Lucky Duck, a consumer membership rewards platform with engaging fixed raffle product mechanics. The product map is com…
Build Internal Data Platform & Automated Ingestion Engine
Hourly ‐ Posted 2 days agoHours needed
Duration
Experience level
Project Background Currently, our operational data—including payroll, invoices, fraud tracking, and employee history—is managed manuall…
Virtual Controller (Client-Facing)
Hourly ‐ Renewed 2 days agoHours needed
Duration
Experience level
About Compass CPA Compass CPA is a rapidly growing accounting, tax, and advisory firm providing Virtual Accountant, Virtual Controller…
Frontend and Backend Developer for AI Automation
Hourly ‐ Posted 2 days agoHours needed
Duration
Experience level
We are seeking a skilled Frontend and Backend developer to enhance our AI Automation/Marketing Tech platform. The role involves taking…
C# .NET Developer to integrate third-party APIs and SDK DLLs
Hourly ‐ Posted 2 days agoHours needed
Duration
Experience level
We are seeking an experienced C# .NET Developer to integrate third-party APIs and SDK DLLs into our existing application. The ideal can…
Skilled Backend Developer with Experience Designing and Building RESTful APIs and Integrations
Hourly ‐ Posted 2 days agoHours needed
Duration
Experience level
We are seeking a highly skilled Backend Developer with substantial experience in designing and building RESTful APIs to join our dynami…
Boomi Expert - Quick Job
Hourly ‐ Posted 2 days agoHours needed
Duration
Experience level
I need a skilled Boomi developer to install a "Process Usage bundle" in my Boomi environment so I'm able to see consumption by Process…
Flutter developer with Firebase back-end experience
Fixed-price ‐ Posted 2 days agoFixed-price
Experience level
Looking for a Flutter Developer 🚀 We're building something exciting and are looking for a developer who can take ownership and help b…
UX/UI Designer & Developer Team Needed
Hourly ‐ Posted 2 days agoHours needed
Duration
Experience level
We are seeking a skilled UX/UI designer and react-native developer team to work on a mobile app and web platform project. The team will…
WhatsApp Chatbot Architect & Developer (Scalable MVP Phase)
Fixed-price ‐ Posted 2 days agoFixed-price
Experience level
# WhatsApp Chatbot Developer for Medical Practice We are looking for an experienced developer to help us design and build a WhatsApp c…
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