Senior Backend Developer

Posted 12 hours ago

Worldwide

Summary

Required qualifications: 5+ years professional backend development; 3+ years TypeScript + Node.js in production. NestJS (or strong Express/Fastify background + readiness to work in NestJS). PostgreSQL: schema design, transactions, migrations, indexing. REST API design; validation; structured error handling. JWT, OAuth2, RBAC implemented in production. At least one of the following demonstrated in prior work: - Fintech / wallet / ledger (idempotent webhooks, reconciliation), or - Realtime systems (WebSocket, Redis pub/sub), or - Technical leadership (schema ownership, code review, API contracts). Nice to have: Indian payment gateways and KYC vendor APIs. decimal.js / big.js for money; BullMQ; Prisma; Socket.IO. High-traffic B2C or marketplace backends. Comfort with AI-assisted development and strict review on financial code.

Less than 30 hrs/week
Hourly
3-6 months
Duration
Expert
Experience Level
$10.00
-
$15.00
Hourly
Remote Job
Complex project
Project Type

Contract-to-hire opportunity

This lets talent know that this job could become full time.
Learn more

Skills and Expertise

Mandatory skills

TypeScript

PostgreSQL

Redis

Activity on this job

Proposals:20 to 50
Interviewing:
0
Invites sent:
0
Unanswered invites:
0

About the client

Member since Jun 29, 2026

India
1:12 AM
Sports & Recreation
Small company (2-9 people)

Explore similar jobs on Upwork

AI-Savvy WordPress Backend VA (PHP, Templates, MySQL, Plugin Trou…Hourly‐ Posted 3 months ago

Git

WordPress

PHP

MySQL

JavaScript

Backend Laravel DeveloperFixed-price‐ Posted 2 months ago

Laravel

PHP

MySQL

MySQL Programming

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.