Principal Information Security Engineer

SentiLink provides innovative identity and risk solutions, empowering institutions and individuals to transact with confidence. We’re building the future of identity verification in the United States replacing a clunky, ineffective, and expensive status quo with solutions that are 10x faster, smarter, and more accurate. We’ve seen tremendous traction and are growing extremely quickly. Our real-time APIs have helped verify hundreds of millions of identities, starting with financial services and rapidly expanding into new markets. SentiLink is backed by world-class investors including Craft Ventures, Andreessen Horowitz, NYCA, and Max Levchin. We’ve earned recognition from TechCrunch, CNBC, Bloomberg, Forbes, Business Insider, PYMNTS, American Banker, LendIt, and have been named to the Forbes Fintech 50. We have also been named a 2026 FICO Industry Vanguard Decision Award Winner. Last but not least, we’ve even made history - we were the first company to go live with the eCBSV and testified before the United States House of Representatives on the future of identity. SentiLink supports a variety of ways to work, ranging from fully remote to in-office. We operate as a digital-first company with strong collaboration across the U.S. and India. We maintain physical offices in Austin, San Francisco, New York City, Seattle (Bellevue), Los Angeles, and Chicago in the U.S., and in Gurug [... source excerpt omitted ...] cations, and internal systems. This is a highly technical, hands-on role focused on building scalable security foundations while enabling the business to move quickly and safely. You will partner closely with Engineering, Infrastructure, Product, Legal, and Compliance teams to design secure systems, improve detection and response capabilities, strengthen cloud security posture, and reduce organizational risk. You’ll help shape long-term security strategy while remaining deeply involved in technical implementation and operational execution. This role is best suited for someone who combines strong technical depth with practical judgment and thrives in fast-moving, high-ownership [... source excerpt omitted ...] ations and identity flows Stay current on offensive security techniques, AI-assisted security tooling, and emerging attack patterns relevant to fintech and identity verification Requirements: 8+ years of experience in security engineering, software engineering with a security focus, or closely related roles Proficient in at least one systems language (Go, Rust, C++) and at least one higher-level language (Python, TypeScript) Proven ability to design and ship production software end-to-end Deep AWS infrastructure expertise, including IAM, EKS, RDS, networking, and managed services Demonstrated ability to identify security misconfigurations and vulnerabilities across cloud archi