Senior Software Engineer, Fintech Products

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

Benefits offered by this job

Equity

Visa sponsorship available

Job summary

Mural Group is hiring a Senior Backend Engineer in New York to build payroll and bill-pay functionality from ground up. You will create ledgers, embedded accounts and ensure accounting syncs with precise reconciliation.

You will set standards for idempotency, retries, and reconciliation, and diagnose root causes when numbers don’t match, delivering robust, scalable systems.

Qualifications

• 5+ years building production backend systems.
• Experience with TypeScript/Node for backends.
• Deep PostgreSQL knowledge including data integrity.
• Strong focus on reconciliation and rounding accuracy.

Responsibilities

• Build payroll and bill-pay systems from the ground up.
• Develop ledgers, embedded accounts and accounting syncs.
• Set standards for idempotency, retries, and reconciliation.
• Investigate and fix discrepancies to ensure numbers match accurately.

Skills

Backend engineering

Node/TypeScript

PostgreSQL

Data reconciliation

Idempotency & retries

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).

Mural Group is recruiting for this role on behalf of a client.