Paxos Senior Software Engineer (Custody) Interview Preparation Guide

For a Senior Software Engineer (Custody) at Paxos, you can expect a multi-stage process over 3–6 weeks. It typically starts with a recruiter screen, followed by one or two technical phone/video screens focusing on coding and practical backend topics. If you pass these, you move to an onsite (virtual or in-person) loop of 4–6 rounds covering: advanced coding, distributed-systems-oriented system design (with blockchain and custody angles), cloud/infrastructure and reliability, security/cryptography awareness, and behavioral/values alignment. Interviewers evaluate your ability to design and build secure, scalable custody services across blockchains, operate them in production on cloud-native infrastructure, and provide senior-level technical leadership and collaboration.[1][2][3]