Find the Best Back-End Developers Jobs

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$100
Fixed-price
Expert
Experience level

We are looking for an experienced Full-Stack Developer to continue building out CrewUp, a web application marketplace platform for gene…

Back-End DevelopmentAPINode.jsHTML5HTMLCSSJavaScript
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Less than 30 hrs/week
Hours needed
1 to 3 months
Duration
Expert
Experience level

TITLE Senior Backend Engineer – AWS, PostgreSQL, n8n & API Integrations DESCRIPTION I am looking for a senior backend systems engineer…

Back-End DevelopmentHubSpotn8nAmazon Web ServicesRESTful APIAPI DevelopmentDatabase DesignDatabase Architecture
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Website Bug Fixing and Enhancement

New
Fixed-price ‐ Posted 21 hours ago
$75
Fixed-price
Intermediate
Experience level

We are seeking a skilled freelancer to clean bugs from an existing website and enhance its user-friendliness. The ideal candidate will…

Back-End DevelopmentPHP
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Vibe Coding AI SaaS Engineer

New
Fixed-price ‐ Posted 20 hours ago
$10
Fixed-price
Expert
Experience level

We mostly vibe code our SaaS tools with claude. We do the vibe coding with astrojs. While doing it we often face some issues in complet…

Back-End DevelopmentArtificial IntelligenceAPI
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Node.js MCP Server Development

New
Fixed-price ‐ Posted 16 hours ago
$3,000
Fixed-price
Intermediate
Experience level

Build a Node.js MCP Server for Actionstep API. The project involves integrating with the Actionstep API to create a seamless communicat…

Back-End DevelopmentLinux System AdministrationJavaScriptNode.jsMongoDB
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$1,000
Fixed-price
Intermediate
Experience level

Continuing Education Course Approval & Compliance Coordinator Location: Remote Must be a native English speaker from an English speakin…

Back-End DevelopmentContent Writing
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Python & PostgreSQL Database Migration Consultant

New
Hourly ‐ Posted 21 hours ago
Less than 30 hrs/week
Hours needed
Less than 1 month
Duration
Expert
Experience level

We are looking for a Python & PostgreSQL Database Migration Consultant to manage and execute database migration projects from legacy sy…

Back-End DevelopmentETLPythonMySQLDatabaseDatabase Design
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Backend Developer for Auth System

New
Fixed-price ‐ Posted 20 hours ago
$150
Fixed-price
Intermediate
Experience level

We need a backend developer to build the authentication and database layer for our application using Node.js and PostgreSQL. The role i…

Back-End DevelopmentMySQL ProgrammingJavaScriptMySQLPHP
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Backend Development with Supabase

New
Fixed-price ‐ Posted 16 hours ago
$200
Fixed-price
Intermediate
Experience level

charlie-house-v2.html Let me know if you have any questions. What Needs to Be Built (Backend) & maybe a little front end as well. 1.…

Back-End DevelopmentHTML5JavaScriptMySQLPHP
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30+ hrs/week
Hours needed
3 to 6 months
Duration
Intermediate
Experience level

About the role We're a founder-led product studio building web applications for US-based clients (DTC ecommerce, wellness, and SaaS).…

Back-End DevelopmentFigma
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