Find the Best Back-End Developers Jobs
Check out a sample of the 1,400 Back-End Developers jobs posted on Upwork
Klayvio buildout
Hours needed
Duration
Experience level
Klaviyo + Laravel Specialist for Profile Sync, SMS, and Template Rotation Looking for an experienced Klaviyo marketer/developer to con…
AI SaaS MVP Developer Needed to Build an AI-Powered Startup Platform
Fixed-price
Experience level
We are looking for an experienced AI SaaS MVP Developer (or small development team) to help us build and launch a modern AI-powered Saa…
Job Title: Python Developer –Master v1.6 Python Strategy Engine & Backtesting System
Fixed-price
Experience level
Development of the Master v1.6 strategy engine in accordance with the supplied technical specification and supporting documentation. Th…
Sales Funnel Expert - E-commerce Health Niche
Hours needed
Duration
Experience level
About the Role We run e-commerce brands in the health space (health devices and related products), built around high-converting sales p…
Senior Python/Django Backend Developer — AI Integration & Ownership Role
Hours needed
Duration
Experience level
About the Role We have a half-built Django backend that needs a senior engineer to take full ownership — not just execute tickets, but…
Senior web developer needed for small GitHub project
Hours needed
Duration
Experience level
We’re looking for a senior web developer to help submit our MCP server and skills to relevant GitHub repositories. We already have the…
Full Stack Dev / AI-powered automation
Fixed-price
Experience level
Full-Stack Developer (Lovable + Supabase + AI Automation + Google Vision) — 3-4 Week Contract HVAC Lead Generation SaaS | Remote | Appl…
Senior Full-Stack Product Engineer (React, Cloudflare Supabase, AI, Integrations)
Hours needed
Duration
Experience level
We are building a modern field-service and marine operations platform used by sevral roles in the industry. The platform includes: * C…
Senior web developer needed for small GitHub project
Hours needed
Duration
Experience level
We’re looking for a senior web developer to help submit our MCP server and skills to relevant GitHub repositories. We already have the…
Lead Developer for Cybersecurity SaaS
Hours needed
Duration
Experience level
About Us: DeeplySecure (www.deeplysecure.com) is a B2B SaaS platform for Security Awareness Training, built for enterprise clients acr…
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