Polymarket - Senior Platform Engineer

deCircle•New York, NY

21d

About The Position

Polymarket is looking for a world-class backend engineer to join our platform engineering team as we scale. The ideal candidate is obsessed with performance, security, and scalability—someone who can architect and optimize high-throughput systems with cutting-edge infrastructure. You will play a key role in building and maintaining the foundation that powers our prediction markets, ensuring reliability and efficiency as we continue to grow.

Requirements

8+ years of experience in backend development
Experience architecting and developing solutions to ambiguous problems with significant impact and high usage
Master-level proficiency in systems programming languages like Golang, Rust, or C++
Strong knowledge of database systems and internals (e.g., PostgreSQL, MongoDB)
Experience with cloud platforms (e.g., AWS, GCP) and infrastructure as code (e.g., Terraform, Ansible)
Excellent problem-solving and communication skills

Nice To Haves

Blockchain-specific backend experience (e.g., working on BFT consensus engines, event indexing systems, libp2p)
Experience with Ethereum roll-up technologies (e.g., Arbitrum Nova, Optimism)
Open source contributor
Active participant on ethresear.ch

Responsibilities

Architect & build backend systems. You'll design, implement, and maintain high-performance backend services and APIs that handle large-scale transactions and real-time data.
Optimize performance & scalability. You’ll push the limits of our system’s throughput and efficiency, ensuring seamless operation at scale.
Enhance security & reliability. You’ll implement best practices for secure, fault-tolerant, and highly available distributed systems.
Cross-company collaboration. You’ll collaborate with front-end engineers, designers, and stakeholders across the company to deliver a fully integrated user experience.
Contribute to code reviews. You'll play a critical role in maintaining the high quality of our codebase by providing feedback and suggestions on others' work during code review sessions.
Participate in research & innovation. You’ll stay at the forefront of blockchain-based trading technologies, exploring new solutions to improve our platform.
Interface with Customers. You’ll communicate directly with customers, providing support and gathering feedback.