Polymarket is looking for a senior backend engineer to build and scale the payments infrastructure that powers deposits, withdrawals, and money movement across the platform
This role sits at the intersection of engineering and regulated financial operations, and requires the judgment to move fast without compromising correctness or auditability. You’ll be a high-ownership individual contributor working closely with Product, Compliance, and Design
Build payments infrastructure: Design and lead migrations from legacy or monolithic systems to reliable, distributed payments services (Go, gRPC, DynamoDB/MySQL) with no disruption to production money movement
Integrate with financial rails: Build and maintain integrations with payment processors, banking rails, and card networks to support deposits, withdrawals, and settlement
Ship regulated features: Partner cross-functionally with Product, Compliance, and Design to deliver high-stakes financial features such as KYC/EDD, fraud checks, and reconciliation
Own correctness and auditability: Take ownership of production on-call for money-movement systems where correctness, reliability, and auditability are non-negotiable
Drive team process: Mentor engineers, onboard new hires, and lead backlog grooming and tech-debt reduction efforts
Collaborate cross-functionally: Work closely with engineers across the platform to keep payments systems tightly integrated with the broader exchange