Payments Engineer

Job summary

Responsibilities

The mission of the Payments group at Mercor is to be the financial and commercial backbone of the company.

• Flow-level observability across payout → settlement → reconciliation
• Reliability engineering for distributed payment systems
• Instrumentation and monitoring of financial primitives (ledger, payout orchestration, settlement ingestion)
• Automation to eliminate manual treasury and payout workflows
• Root-cause driven system redesign

What they're looking for

• Experience & Domain Expertise: 6+ years in building scalable backend systems, with a strong preference for experience in high-stakes domains such as payments, fintech, billing…
• Must Haves:
• Backend Expertise: 3+ years of industry experience in backend/platform engineering (or equivalent), including ownership of production systems.
• Payment Infrastructure Expertise: Demonstrated ability to integrate with and manage third-party payment gateways (e.g., Stripe, Adyen) and/or direct banking APIs.
• Compliance and Security: Understanding of financial regulations, including adherence to PCI-DSS, and the secure handling and encryption of sensitive banking and customer data.

Tech stack

• PostgreSQL
• Go
• Rust
• C++
• Kafka
• Kubernetes