About the role
Circle (NYSE: CRCL) is one of the world’s leading internet financial platform companies, building the foundation of a more open, global economy through digital assets, payment applications, and programmable blockchain infrastructure. Circle’s platform includes the world’s largest regulated stablecoin network anchored by USDC, Circle Payments Network for global money movement, and Arc, an enterprise-grade blockchain designed to become the Economic OS for the internet. Enterprises, financial institutions, and developers use Circle to power trusted, internet-scale financial innovation. Learn more at circle.com . What you’ll be part of: Circle is committed to visibility and stability in everything we do. As we grow as an organization, we're expanding into some of the world's strongest jurisdictions. Speed and efficiency are motivators for our success and our employees live by our company values : High Integrity, Future Forward, Multistakeholder, Mindful, and Driven by Excellence. We have built a flexible work environment where new ideas are encouraged and everyone is a stakeholder. What you’ll be responsible for: We are looking for a Smart Contract Engineer to design, implement, test, and maintain production-grade smart contracts across multiple blockchain ecosystems. This role focuses primarily on EVM-based Solidity contracts and Solana programs written in Rust using the Anchor framework, while also building the backend services that power and integrate with those contracts. As a Smart Contracts Engineer, you’ll be responsible for building secure and efficient smart contracts that power Circle’s core protocols. You’ll also contribute to the supporting backend services that enable transaction orchestration, indexing, and monitoring (70% smart contract development and 30% backend development) . You will work closely with protocol, infrastructure, and security engineering teams to deliver high-assurance, auditable solutions that support scalable, blockchain-based services across ecosystems.
What you'll work on: Design and implement production-grade smart contracts across EVM and/or Solana ecosystems using Solidity and Rust Develop backend services and integration layers that interface with deployed smart contracts and internal systems Research and apply industry-standard design patterns and emerging best practices in smart contract and distributed systems engineering Optimize smart contract performance, including gas efficiency, while enforcing strong security through secure architecture and defensive coding practices Build and maintain transaction orchestration flows, event listeners, and indexing services that bridge on-chain and off-chain components Test, deploy, and manage upgrades for smart contracts and backend services in production environments Partner with security teams on audits, threat modeling, remediation, and production monitoring to ensure reliability and operational excellence What you’ll bring to Circle: Core
