Senior Software Engineer, Fintech Products

Mural Group; New York (NY); On-site; USD 220,000 - 300,000; Full time

Job summary

Mural Group is hiring a senior backend engineer to join a fast-growing, venture-backed software and payments company in New York. You will help build payroll, bill pay and banking features from scratch, laying down the standards for robustness, idempotency and reconciliation.

The role requires 5+ years of backend experience (ideally TypeScript/Node), deep PostgreSQL knowledge, and a strong focus on precise financial handling. Onsite NYC work with equity participation is offered.

Qualifications

• 5+ years building production backend systems.
• Experience with TypeScript or Node.js.
• Strong understanding of transaction guarantees: idempotency, retries, atomicity.
• Deep PostgreSQL and precision in reconciliation and rounding.

Responsibilities

• Build payroll and bill pay from the ground up.
• Build ledgers, embedded accounts and accounting syncs.
• Set standards for idempotency, retries and reconciliation.
• Find root causes when numbers don’t match and fix them.

Skills

Backend engineering

TypeScript/Node

PostgreSQL

Reconciliation & rounding

Tools

TypeScript

Node.js

PostgreSQL

Job description

Location: New York, NY (onsite, 5 days)

Pay: $220,000–$300,000 + equity

A fast-growing, venture-backed software and payments company is building payroll, bill pay and banking features from scratch. This engineer will set the patterns every money-moving system at the company follows.

What you'll do

• Build payroll and bill pay from the ground up

• Build ledgers, embedded accounts and accounting syncs

• Set the standards for idempotency, retries and reconciliation

• Find root causes when numbers don't match, and fix them for good

What you bring

• 5+ years building production backend systems, ideally TypeScript or Node

• Transaction guarantees: idempotency, retries, atomicity

• Deep PostgreSQL

• Precision about reconciliation and rounding

Nice to have:

payroll, banking or audited ledger systems; ACH, payment processors or accounting integrations; directing AI coding agents

Visa sponsorship available (H-1B transfers preferred).