Find the Best Back-End Developers Jobs

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Check out a sample of the 1,389 Back-End Developers jobs posted on Upwork

Less than 30 hrs/week
Hours needed
More than 6 months
Duration
Intermediate
Experience level

I’m writing to you with full transparency. Apex Growth Partners is a new venture. We haven’t launched a single project yet. We don’t h…

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

We are currently developing a SaaS platform and have already built a functional alpha version. The existing application was created wit…

Back-End DevelopmentTypeScriptPythonKubernetes
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Node.js Developer for SaaS Application

New
Hourly ‐ Posted 10 hours ago
Less than 30 hrs/week
Hours needed
1 to 3 months
Duration
Intermediate
Experience level

We are seeking an experienced Node.js developer to help build a multi-tenant SaaS application. The ideal candidate will have a strong u…

Back-End DevelopmentAngularJSPHPHTML5JavaScript
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$200
Fixed-price
Expert
Experience level

Hi, my marketplace is already live on a Laravel and Vue stack and I am not changing that core. What I need is small and very specific:…

Back-End DevelopmentReact NativeSoftware DevelopmentStripePythonPHPHTML5HTMLCSSBootstrapMongoDBSQLRedisMySQLJavaScriptTypeScript
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Real-Time AI Chat Backend

New
Fixed-price ‐ Posted 11 hours ago
$150
Fixed-price
Expert
Experience level

Build a small real-time chat backend. Authenticated users open WebSocket connections, join conversations, and exchange messages with an…

Back-End DevelopmentPythonDockerRedis
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$3,000
Fixed-price
Expert
Experience level

Job Title: Senior WP/JS Team / Agency for P2P Yacht Charter Platform (JetEngine CCT + Reactive JS Frontend) Location Target: We are sp…

Back-End DevelopmentAPI IntegrationJavaScriptPHPMySQL
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Mobile Developer for Android and iOS

New
Hourly ‐ Posted 10 hours ago
30+ hrs/week
Hours needed
More than 6 months
Duration
Intermediate
Experience level

[What We Need] Maintain, and build out features for the native Android and iOS application. Support, test, and continuously enhance the…

Back-End DevelopmentAndroidiOS DevelopmentMobile App Development
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Full Stack Developer Needed for SaaS Platform

New
Hourly ‐ Posted 9 hours ago
Less than 30 hrs/week
Hours needed
1 to 3 months
Duration
Expert
Experience level

We are looking for an experienced Full Stack Developer to help build and scale a SaaS platform from the ground up. The ideal candidate…

Back-End DevelopmentJavaScriptAmazon Web ServicesAPIDatabase ArchitectureNode.jsAPI Integration
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$10
Fixed-price
Intermediate
Experience level

We are seeking a skilled Full Stack JavaScript Developer to enhance our web platform using React, Next.js, and Node.js. The ideal candi…

Back-End DevelopmentCSSAPI IntegrationNode.jsHTML5jQueryJavaScript
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30+ hrs/week
Hours needed
3 to 6 months
Duration
Expert
Experience level

OVERVIEW We're a fast-growing DTC haircare brand on Shopify. Our hero product is an instant gray-coverage shampoo. Most of our growth…

Back-End DevelopmentCSSHTMLShopify
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