Find the Best Back-End Developers Jobs
Check out a sample of the 1,209 Back-End Developers jobs posted on Upwork
Project Manager / Executive assistant to Marketing Director
Fixed-price ‐ Renewed 11 hours agoFixed-price
Experience level
PROJECT MANAGER / EXECUTIVE ASSISTANT TO MARKETING DIRECTOR Remote | Full-Time | U.S. Pacific Time / Los Angeles Hours ABOUT THE ROLE…
Senior Backend Engineer for Payment Ledger, Webhook Ingestion, and JIT Routing Core
Fixed-price
Experience level
We are looking for a senior backend engineer to help initialize a secure payment-routing backend foundation. The work involves setting…
B2B Client Acquisition Partner: Prospect research, outreach and appointment setting
Hours needed
Duration
Experience level
Background and introduction Carter Loxworth Business Services (CLBS) is a business consultancy with 20 years of consulting experience.…
Senior Backend Developer (Supabase + n8n + React)
Fixed-price
Experience level
What you will do Design and build internal backend flows for our data enrichment, provisioning, and reporting operations Own our Supa…
Senior Low-Latency Network Performance Engineer — Node.js / HTTP / TCP
Fixed-price
Experience level
We are looking for a senior low-latency / network performance engineer to analyze and optimize an existing Node.js HTTP automation syst…
.NET Backend Developer
Hours needed
Duration
Experience level
Works on problems/projects of a moderately complex scope. Acts as an informed team member providing analysis of information and limite…
Full-Stack Developer for Uscreen Customization + API Integration — Multi-Brand Video Portals
Hours needed
Duration
Experience level
About the project We run a video membership platform on Uscreen (a hosted video/OTT membership platform) and are setting up a multi-cu…
Looking for someone to find 500 leads in Singapore
Fixed-price
Experience level
Hi, I’m looking for someone to create a verified lead list of 500 individuals working in headhunting and HR consulting firms in Singap…
Hospitality Revenue Consultant - Competitor Pricing & Data Modeling (Lighthouse & PriceLabs)
Fixed-price
Experience level
About the Project We are validating the financial underwriting and business plan for a planned luxury boutique hospitality development…
Java / Kotlin Backend Engineer (100% remote)
Hours needed
Duration
Experience level
You love building solid, high-quality backend systems and enjoy solving real-world problems in a collaborative team? Then you've come t…
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