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: The Senior Software Engineer is responsible for extending Circle's in-house blockchain systems infrastructure to support the tokenization of the world; analyzing requirements, procedures, and problems to improve existing systems and modifying systems; building and owning scalable microservices that are responsible for reliable and secure APIs that transfer value and assets across all blockchain protocols as well as traditional banking protocols; collaborating with Product and Engineering teams to design, test, and shape Circle features, including developing and documenting system design procedures, testing procedures, and quality standards; troubleshooting program and system malfunctions to restore normal functioning; building publicly accessible APIs that make it simple for developers to integrate with complex payment systems; integrating Platform Services with leading banks and financial technologies; consulting with management to ensure agreement on system principles; writing the infrastructure to deliver great payment experiences, including data sources (SQL or NoSQL), messaging systems and APIs; other duties as assigned. What you'll bring to Circle: - 6 years minimum professional software development experience in object oriented languages like Java and Go - Bachelor's degree in Computer Science or a closely related field (or equivalent). - Led teams (2-4) technically on architecture and system design. - Experience working with payment systems like credit cards and bank transfers. - A broad understanding of RESTful API design and development principles. - Experience with Cloud Services (AWS, Google Cloud, Microsoft Azure, etc). - Experience with SQL databases and designing schemas. - Proven experience in the design & deployment of production-quality, scalable software. - A focus on coding standards and code quality -- a desire to have great test coverage to enable continuous delivery. - Excellent communication skills, able to collaborate with remote teams, share ideas and present concepts effectively. - Self-starter, you enjoy moving at a fast pace, shipping software that improves the user experience and constantly improving your work with little supervision. Additional Information: - This position is eligible for day-one PERM sponsorship for qualified candidates. Circle is on a mission to create an inclusive financial future, with transparency at our core. We consider a wide variety of elements when crafting our compensation ranges and total compensation packages. Starting pay is determined by various factors, including but not limited to: relevant experience, skill set, qualifications, and other business and organizational needs. Please note that compensation ranges may differ for candidates in other locations. Base Pay Range: $152,500 - $205,000 We are an equal opportunity employer. We do not discriminate on the basis of race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status, or any other protected status required by the laws in the locations where we hire. Additionally, Circle participates in the E-Verify Program in certain locations, as required by law. Should you require accommodations or assistance in our interview process because of a disability, please reach out to accommodations@circle.com for support. We respect your privacy and will connect with you separately from our interview process to accommodate your needs. #LI-Remote

• Join Tether and shape the future of digital finance by contributing to innovative products. • Write native addons that bridge platform APIs into JavaScript. • Debug across multiple operating systems. • Maintain and extend existing native modules based on product team requests. • Set up and maintain cross-platform builds for macOS, Linux, Android, and iOS. • Contribute to the Bare runtime core and evaluate alternative JS engines.

• Join Tether and shape the future of digital finance by building and maintaining the runtime and its ecosystem. • Write native addons that bridge platform APIs into JavaScript. • Debug across multiple operating systems. • Work independently, owning modules end to end, and shipping code for various devices.

• Design, implement, and ship bare-* native modules (e.g., bare-bluetooth, bare-tcp, bare-fs, bare-crypto) end to end, including code, and tests • Write C native addons that bridge platform APIs (Bluetooth, networking, filesystem, crypto) into JavaScript • Maintain and extend existing native modules based on product team requests and the bare-node compatibility list • Set up and maintain cross-platform builds for macOS, Linux, Android (NDK), and iOS (Xcode) • Own cross-compilation toolchain configuration for each target platform • Maintain CI pipelines that build and test native modules across all supported platforms • Investigate and fix platform-specific build failures and toolchain issues • Contribute to the Bare runtime core (module system, native addon system, light-weight threads) • Help reduce the bare-node missing API surface • Participate in evaluating and integrating alternative JS engines eg libjerry • Debug native addon issues across multiple OS and device targets, including mobile • Write and maintain tests for all modules • Respond to Bare team inquiries from internal teams and the public • Communicate progress, blockers, and decisions in writing • Participate in a weekly status call • Coordinate with product teams (Keet, WDK/Wallet)