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About this role
Join Polymarket as a Senior Backend Engineer to enhance our exchange systems, focusing on low-latency APIs and high-throughput data streams in a fast-growing prediction market platform.
Description
About Polymarket
Polymarket is the world's largest prediction market platform. We enable individuals to express views on real-world events by trading on outcomes across politics, economics, sports, culture, and current affairs. Built as a peer-to-peer marketplace with no centralized "house," Polymarket aggregates diverse opinions into transparent, market-based probabilities that reflect collective expectations about the future. We're growing fast, both in terms of volume ($21B traded in 2025) and adoption as an alternative news source. Our ambition is to become a ubiquitous beacon of truth in global media and we need your help adding fuel to the fire.Responsibilities
What You'll Do
- Own the CLOB engine's critical path. Profile matching and orderbook hot paths, map settlement-sensitive state transitions, and drive improvements to latency, throughput, and async engine flow backed by benchmarks and production-grade evidence.
- Reduce lock contention without breaking correctness. Debug concurrency issues, design safer queueing and backpressure for orderbooks, and improve the system's ability to handle materially more markets and order flow with lower tail latency.
- Build for observability and safety. Instrument improvements with pprof, metrics, logs, and traces. Establish rollback guarantees and narrower critical paths that make production incidents easier to detect, diagnose, and resolve.
- Reason about settlement risk. Understand how on-chain transaction effects ripple into off-chain exchange state, and design systems that handle crossed books, ghost fills, stale orders, cancel inconsistencies, and settlement edge cases correctly.
- Improve the runtime. Reduce GC pressure, optimize CPU and memory allocation behavior, and push Go runtime performance to meet the demands of a high-throughput exchange at scale.
- Debug production incidents. Own latency, correctness, and settlement-state incidents end-to-end, and drive follow-through that leaves the system measurably better each time.
Requirements
What We're Looking For
- Production experience building low-latency backend systems at scale
- Strong concurrency skills and a track record debugging lock contention, race conditions, and async correctness issues
- Fluency in production Go and Rust
- Deep observability experience: pprof, metrics, logs, and distributed traces
- Experience with exchange systems that interact with EVM or blockchain settlement layers
- Strong computer science fundamentals: algorithms, data structures, concurrency, and profiling
- (Plus) Direct experience with matching engines or exchange infrastructure
- (Plus) EVM transaction lifecycle experience: confirmations, reorgs, and how on-chain state affects off-chain systems
- (Plus) Go runtime and GC tuning experience
- (Plus) Experience with Redis, PostgreSQL, gRPC, and Protobuf
- (Plus) Kubernetes and AWS production operations experience
Conditions & Benefits
Benefits
- Competitive salary & equity
- Unlimited PTO
- Full Health, Vision, & Dental coverage
- 401k match
- Hardware setup: new MacBook Pro, big display, & accessories
Job Details
Market range (est.)$120k–$245k
LocationRemote
AI Score★★★★★★★☆☆☆ 7/10
PostedMay 20, 2026 (53d ago)
Tags & Skills
cryptodefidevweb3Backend Developerremote
Tech Stack
GoRustRedisPostgreSQLgRPCProtobufKubernetesAWS