Find the Best Back-End Developers Jobs

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Check out a sample of the 1,343 Back-End Developers jobs posted on Upwork

30+ hrs/week
Hours needed
More than 6 months
Duration
Expert
Experience level

Senior Developer (Full Stack) WordPress Experience mandatory Good to Great Schools Australia Limited About the Organisation Good…

Back-End DevelopmentPHPDocker
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Software AI Engineer

Fixed-price ‐ Posted 1 day ago
$5
Fixed-price
Intermediate
Experience level

We are seeking an experienced Senior Full-Stack Developer to lead the development of our mobile app. The ideal candidate will have a st…

Back-End DevelopmentReact NativeArtificial IntelligenceFlutteriPad App DevelopmentiOS DevelopmentMobile App DevelopmentPythonKotlinJavaScriptAPI Integration
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Less than 30 hrs/week
Hours needed
1 to 3 months
Duration
Entry
Experience level

We are seeking a highly skilled and insightful Back-End Developer to play a crucial role in building and enhancing the systems that fos…

Back-End DevelopmentJavaAPIMySQLPython
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30+ hrs/week
Hours needed
More than 6 months
Duration
Expert
Experience level

Looking for a frontend web designer who is comfortable in raw HTML/CSS, can survive without react, and can create islands of interactiv…

Back-End DevelopmentFigmaJavaScriptHTMLCSS
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Odoo API Developer Needed

Hourly ‐ Posted 1 day ago
Hours to be determined
Hours needed
1 to 3 months
Duration
Intermediate
Experience level

We are seeking an experienced Odoo developer to build and implement a custom API for our business. The ideal candidate should have stro…

Back-End DevelopmentAPI DevelopmentOdooPython
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Less than 30 hrs/week
Hours needed
Less than 1 month
Duration
Expert
Experience level

We are looking for an experienced Node.js developer to build a small backend API for our application. This is a short-term task that sh…

Back-End DevelopmentNode.jsRESTful APIMongoDBGit
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Senior Java Developer

Hourly ‐ Renewed 1 day ago
30+ hrs/week
Hours needed
More than 6 months
Duration
Intermediate
Experience level

We are looking for an experienced Senior Java Developer to join a remediation engagement focused on modernising and stabilising an exis…

Back-End DevelopmentRESTful APIJava
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$50
Fixed-price
Intermediate
Experience level

About the role We are an established decking company running a portfolio of advanced, heavily customised websites, and we're looking to…

Back-End DevelopmentHTML5PHP
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Backend / Solutions Architect

New
Fixed-price ‐ Posted 23 hours ago
$4,500
Fixed-price
Expert
Experience level

Key responsibilities: Own and design the overall backend architecture for DocuSign-based integrations and services Define architectur…

Back-End DevelopmentOAuthAPI DevelopmentAWS LambdaNode.js
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Less than 30 hrs/week
Hours needed
1 to 3 months
Duration
Expert
Experience level

Job Description Summary We're looking for a senior full stack JavaScript / TypeScript engineer to join an active client engagement imm…

Back-End DevelopmentAPINode.jsAPI IntegrationCSSJavaScript
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