Polymarket · 17 hours ago
Senior API Engineer - Polymarket US
United States
Full-time
Remote
Mid, Senior Level
3+ years expPolymarket is the world’s largest prediction market, and they are seeking an experienced API engineer to develop and deploy endpoints for their ISV customers. The role involves building critical systems for their CFTC-regulated exchange and collaborating with various internal teams to handle liquidity at scale.
CryptocurrencyFinancial ServicesPrediction MarketsPredictive Analytics
Responsibilities
Maintain API access to our US Exchange. Create systems that help ISV participants and institutional customers set market prices on the US Exchange
Oversee Onboarding of Market Makers. Partner closely with our growing Forward Deployed Engineering team to help market makers access the API
Manage FIX / REST / SDK Integrations. Architect and test systems for handling various institutional customers and access needs
Design for scale and compliance. Build systems that handle thousands of daily transactions while maintaining audit trails and meeting CFTC regulatory requirements
Collaborate with internal teams. Partner closely with operations, compliance, and product to understand workflows, gather feedback, and iterate quickly on tooling
Lead technical decisions. Participate in architecture discussions, code reviews, and help establish best practices for the team
Qualification
Required
3-10 years of professional software development experience
Strong FIX / REST / SDK experience with direct previous projects
Solid experience with AWS, Cloudfare, Kubernetes, Kafka
Experience building data-heavy applications or tools
Strong collaboration and communication skills—you work well with non-technical stakeholders
Bias for action—all-in work mindset eager to work immediately on solving problems
Builder's mindset—you take pride in creating tools that solve real operational problems
Preferred
Background in fintech, payments, reconciliation systems, or regulated environments
Understanding of regulated exchange backend and audit requirements
Bachelor's degree in Computer Science or equivalent
Company
Polymarket
Polymarket is a prediction market platform where traders predict future event outcomes, reacting to news in real time.
11-50 employees
Funding
Current Stage
Early StageTotal Funding
$2.28BKey Investors
Intercontinental ExchangeFounders FundBlockchain Capital
2025-12-08Series A
2025-10-07Corporate Round· $2B
2025-07-15Series C· $150M
Leadership Team
Shayne Coplan
Founder & CEO
Recent News
CB Insights
2026-01-23
Company data provided by crunchbase