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Check out a sample of the 1,903 Back-End Developers jobs posted on Upwork

Less than 30 hrs/week
Hours needed

More than 6 months
Duration

Expert
Experience level

About the Role You’ll be instrumental in building the backend of our Seculyze platform, using Python to develop robust, scalable servi…

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$500
Fixed-price

Intermediate
Experience level

We're a fast-growing e-commerce company with a modern tech stack built on Node.js, NestJS, and MongoDB. We're looking for a talented ba…

Back-End Development NestJS Development NestJS MongoDB RESTful API API Node.js RabbitMQ Microservice
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Senior Backend Engineer - .NET Hourly ‐ Posted 1 day ago

Less than 30 hrs/week
Hours needed

3 to 6 months
Duration

Entry
Experience level

We are seeking a highly skilled Senior Backend Engineer with expertise in .NET to join our team. The ideal candidate will have demonstr…

Back-End Development ASP.NET SQL RESTful API .NET Framework
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Shopify Custom Application API Integration with 3rd Party
New
Fixed-price ‐ Posted 23 hours ago

$100
Fixed-price

Expert
Experience level

hello, I have a small project for integrating an API post request to our third party company from our shopify store. They have given…

Back-End Development RESTful API API Development Web Development JavaScript API Integration API Shopify Database
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Laravel Developer for Octopia Discount API Integration
New
Fixed-price ‐ Posted 23 hours ago

$150
Fixed-price

Intermediate
Experience level

I need a Laravel developer to integrate the Octopia (cDiscount) API for the purpose of creating new products. Key requirements and exp…

Back-End Development Web Development API Integration RESTful API Laravel API Development API
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Domain Catching via DynaDot API Hourly ‐ Posted 1 day ago

Less than 30 hrs/week
Hours needed

1 to 3 months
Duration

Intermediate
Experience level

Hi, I'm looking to build a domain catching software using Dynadot API. If you can help, please ping me with relevant portfolio. Te expe…

Back-End Development JavaScript PHP API
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Looking for a developer to help set up EDI with 270 Fixed-price ‐ Posted 1 day ago

$1,000
Fixed-price

Expert
Experience level

Looking for an experienced developer to set up the 270 EDI request so we can submit for approval for a few different states. If you ar…

Back-End Development API API Integration
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OpenAM, OpenIDM, OpenDJ Hourly ‐ Posted 1 day ago

Less than 30 hrs/week
Hours needed

3 to 6 months
Duration

Intermediate
Experience level

Looking for SSO integration with OpenDS, OpenDJ and OpenAM using SAML tokens

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ActiveMQ Artemis MQTT Broker Setup
New
Hourly ‐ Posted 23 hours ago

Less than 30 hrs/week
Hours needed

Less than 1 month
Duration

Intermediate
Experience level

Job Description: We are currently seeking to hire a highly skilled and experienced professional to join our team and assist us in the…

Back-End Development Linux System Administration Node.js MQTT API Python
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Download All Recordings from Zoom Cloud
New
Fixed-price ‐ Posted 23 hours ago

$100
Fixed-price

Intermediate
Experience level

I have lots of Recordings in Zoom Cloud. I want to download them all without having to manually download one after another. Some of t…

Back-End Development API Development API Integration
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