Senior Backend Engineer – Payment Platform Architecture Review

Posted 2 hours ago

Worldwide

Summary

We’re looking for an experienced backend engineer to review the technical architecture of a planned B2B SaaS payment platform. Scope: Review the proposed Node.js/NestJS backend architecture. Review PostgreSQL multi-tenant data structure. Check API, webhook, and idempotency design. Review the planned document-processing workflow. Identify technical risks, gaps, and possible improvements. Provide a short written assessment with recommended next steps. Requirements: Strong Node.js/NestJS and PostgreSQL experience. Experience with APIs, webhooks, and SaaS architecture. Payment/fintech experience is a plus. Strong security and system-design knowledge. Deliverable: Short architecture review and recommendations.

$65.00
Fixed-price
Intermediate
Experience Level
Remote Job
One-time project
Project Type

Skills and Expertise

Mandatory skills

PostgreSQL

TypeScript

Docker

Activity on this job

Proposals:10 to 15
Last viewed by client:19 minutes ago
Interviewing:
0
Invites sent:
1
Unanswered invites:
1

About the client

Member since Dec 13, 2025

United States
New York11:47 AM
$20K total spent
745 hires, 13 active
72 hours

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