Senior Backend Engineer for Payments

Posted 12 hours ago

Worldwide

Summary

We're seeking an experienced freelance Backend Engineer to enhance our payment infrastructure. The role involves developing and maintaining payment systems, integrating APIs, and ensuring secure transactions. The ideal candidate will have a strong understanding of backend technologies and experience with payment processing.

Less than 30 hrs/week
Hourly
1-3 months
Duration
Intermediate
Experience Level
$15.00
-
$40.00
Hourly
Remote Job
Ongoing project
Project Type

Skills and Expertise

Mandatory skills

PHP

JavaScript

Nice-to-have skills

MySQL

Activity on this job

Proposals:50+
Interviewing:
0
Invites sent:
0
Unanswered invites:
0

About the client

Member since Jul 2, 2026

Spain
8:10 PM

Explore similar jobs on Upwork

Set up sellers.json fileFixed-price‐ Posted 3 weeks ago

JSON

JavaScript

Advertising Networks

Application InstallationFixed-price‐ Posted 2 weeks ago

Android

Smartphone

Tablet

iPhone

How it works

Create your free profile
Highlight your skills and experience, show your portfolio, and set your ideal pay rate.
Work the way you want
Apply for jobs, create easy-to-by projects, or access exclusive opportunities that come to you.
Get paid securely
From contract to payment, we help you work safely and get paid securely.