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Check out a sample of the 1,684 Back-End Developers jobs posted on Upwork

Less than 30 hrs/week
Hours needed

Less than 1 month
Duration

Expert
Experience level

Hi, freight forwarder users are making ebookings with airlines in our application and we want to push those shipments to cargowise. It…

Back-End Development API SQLite
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Website Maintanence Hourly ‐ Posted 2 days ago

Less than 30 hrs/week
Hours needed

More than 6 months
Duration

Intermediate
Experience level

About RX Trade Solutions Welcome to RX Trade Solutions, your premier e-commerce platform dedicated to providing convenient access to pr…

Back-End Development Web Development
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gps api using GT06 protocol Hourly ‐ Posted 2 days ago

Less than 30 hrs/week
Hours needed

1 to 3 months
Duration

Expert
Experience level

Hello, I have a GPS API that uses the GT06 protocol, made in NestJS. Currently, the API is only for receiving data and sending it with…

Back-End Development API
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$400
Fixed-price

Expert
Experience level

For some reason, the following header is added to all of my backend requests from the API: alt-svc h3=":443"; ma=2592000,h3-29=":443";…

Back-End Development Kubernetes
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$20
Fixed-price

Intermediate
Experience level

I am hosting a MEAN stack application that uses FFMpeg software to edit the videos. The build is hosted on DigitalOcean. I need someone…

Back-End Development Amazon Web Services Web Development JavaScript Node.js Angular
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Sr. Java and AWS Developer Hourly ‐ Posted 2 days ago

30+ hrs/week
Hours needed

3 to 6 months
Duration

Intermediate
Experience level

Hello. I need to build a backend application. It will be developed using Java and hosted using the AWS Amplify service. we will use Cog…

Back-End Development Terraform Amazon RDS Amazon Cognito Amazon Web Services Java AWS Lambda
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Java/Springbooy/GCP Job Support Hourly ‐ Posted 2 days ago

Less than 30 hrs/week
Hours needed

More than 6 months
Duration

Expert
Experience level

I want someone to handle my work as a Senior Java developer. I’m the only back end developer who have to handle everything so i need so…

Back-End Development API Google Cloud Platform Java Spring Framework PostgreSQL
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Backend Deployment and Secure GET/POST Requests Fixed-price ‐ Posted 1 day ago

$25
Fixed-price

Intermediate
Experience level

We are looking for a skilled professional to assist us with deploying backends on our Hestia Ubuntu VPS and ensuring secure GET and POS…

Back-End Development JavaScript Python Amazon Web Services API PHP
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Woocommerce Widgets implementation Fixed-price ‐ Posted 1 day ago

$150
Fixed-price

Intermediate
Experience level

Hi I need skills to add and edit the website. It is on wordpress, woocommerce. Need following (i understand we will need some paid plug…

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Hours to be determined
Hours needed

Less than 1 month
Duration

Intermediate
Experience level

You will be paid on the basis of the number of questions you deliver. Rate is $10 for 5 questions minimum however you can send me as ma…

Back-End Development Python
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