Find the Best Back-End Developers Jobs

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Check out a sample of the 1,428 Back-End Developers jobs posted on Upwork

Less than 30 hrs/week
Hours needed
1 to 3 months
Duration
Intermediate
Experience level

We are a live, paying-customer crew marketplace platform in the maritime industry built on Next.js (Vercel) and Supabase/PostgreSQL. Th…

Back-End DevelopmentNext.js
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$1,000
Fixed-price
Intermediate
Experience level

We are looking for an experienced Java developer to assist with ongoing enhancements and maintenance of an existing cloud native platfo…

Back-End DevelopmentAPIRESTful APIJava
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AI Developer / Software Engineer / Webshop Dev

New
Fixed-price ‐ Posted 8 hours ago
$3,000
Fixed-price
Expert
Experience level

We are looking for an experienced developer with strong expertise in artificial intelligence, application development, and e-commerce s…

Back-End DevelopmentNode.jsPythonAPI IntegrationWeb ApplicationArtificial IntelligenceAPIJavaScript
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Hours to be determined
Hours needed
3 to 6 months
Duration
Intermediate
Experience level

We run a product that scrapes multiple websites online for products with a primary focus on finding new products with speed. Results ar…

Back-End DevelopmentMySQLAPIPHPData ScrapingPython
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Less than 30 hrs/week
Hours needed
More than 6 months
Duration
Intermediate
Experience level

We're looking for a confident, self-driven individual to take ownership of project delivery, quality assurance, and customer success ac…

Back-End DevelopmentProject ManagementCustomer ServiceCustomer Support
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Back-End Developer (Next.js + Stripe)

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

We're building a high-end marketing and conversion website for a consumer health-tech product, and we need a back-end developer to own…

Back-End DevelopmentStripeNext.jsJavaScriptAPI
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Full Stack Developer for Web Application

New
Hourly ‐ Posted 11 hours ago
Less than 30 hrs/week
Hours needed
1 to 3 months
Duration
Intermediate
Experience level

We are seeking a skilled full stack developer to enhance our web application. The ideal candidate will have experience in both front-en…

Back-End DevelopmentDatabase ArchitectureAPI IntegrationRESTful APIPythonjQueryPHPHTML5JavaScript
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30+ hrs/week
Hours needed
1 to 3 months
Duration
Expert
Experience level

Job Description: We are looking for an experienced Backend Developer specialized in PHP Laravel to join us on a full-time b…

Back-End DevelopmentAPIMySQLPHP
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Senior Integration Engineer

New
Hourly ‐ Posted 7 hours ago
30+ hrs/week
Hours needed
More than 6 months
Duration
Expert
Experience level

Senior Integration Engineer Location: Remote / Hybrid Employment Type: Contractor About ifndautoparts ifndautoparts (I Find Auto Par…

Back-End DevelopmentRESTful APIAPIJavaRuby
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Less than 30 hrs/week
Hours needed
1 to 3 months
Duration
Expert
Experience level

Jaspersoft Integration Developer – Word Document Export We are looking for a developer to build a custom Jaspersoft integration that i…

Back-End DevelopmentJava
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