Mercor
Payments Engineer
$160K–$500K
San Francisco · On-site · Full-time · Posted Aug 19, 2026
- Experience
- 6+ years building scalable backend systems; 3+ years backend/platform engineering (or equivalent); 3+ years building around the specified technical areas.
About the job
Build and scale Mercor’s payments infrastructure, improving payout, ledger, settlement, reconciliation, and monitoring systems for reliable financial operations.
What you'll do
- Automate payout orchestration and treasury workflows; build an immutable, auditable operational ledger.
- Design settlement ingestion and reconciliation pipelines, and improve observability across payout, processor, and bank flows.
- Eliminate payment failures at their root and reduce processor dependency through system redesign.
What they ask for
- 6+ years building scalable backend systems; high-stakes payments, fintech, billing, or financial infrastructure experience is strongly preferred.
- 3+ years in backend/platform engineering (or equivalent), including production-system ownership; experience integrating third-party payment gateways and/or direct banking APIs.
- Understanding of financial regulations, PCI-DSS, and secure handling and encryption of sensitive data.
- 3+ years building with transactional databases, compiled languages, and message queues or streaming platforms; experience operating production systems under significant load.
Nice to have
- Experience in payments, fintech, billing, or financial infrastructure.
- Experience with distributed systems frameworks such as temporal or k8s.
Pay
$160K – $500K • Offers Equity • Offers Bonus
Tools
Stripe, Adyen, PCI-DSS, MySQL, PostgreSQL, Go, Rust, C++
Model-written summary · the original posting is authoritative