Staff Software Engineer (Payments)

Key Responsibilities

• Take full ownership of complex payment infrastructure challenges, carrying projects from initial architectural design through to production implementation and on-call support
• Design, build, and optimize high-performance, mission-critical systems governing money movement, transaction processing, and ledgers
• Develop resilient distributed systems using asynchronous and event-driven patterns, ensuring fault tolerance, strict consistency models, and exactly-once semantics
• Implement robust database strategies, transaction management, and security protocols, ensuring absolute data correctness, key management hygiene, and comprehensive audit trails
• Ship high-quality code to production continuously, balancing a bias for action with the deliberate precision required for financial infrastructure

Requirements

• Strong Backend / Systems Engineering: Proven track record of building high-performance, critical infrastructure. Deep experience in Rust is highly advantageous, but strong engineers from other systems backgrounds (such as Go, C++, or Java/Scala) who can rapidly adapt to Rust will be fully considered
• Distributed Systems Expertise: Thorough understanding of consistency models, idempotency, fault tolerance, and sagas, with experience designing systems that remain correct under partial failure conditions
• Financial or Transactional Rigor: Prior experience in payments, fintech, high-throughput transaction processing, or another domain where system correctness is vital and "mostly works" is unacceptable
• Advanced Database Fundamentals: Deep knowledge of transactions, indexing, query/caching strategies, event streaming, and a strong respect for auditability and reconciliation
• Security-First Instinct: Natural adherence to secure engineering practices, including secrets hygiene, least-privilege access, and maintaining clean audit trails
• Autonomy & Leadership: Ability to make high-impact technical decisions independently, navigate ambiguity comfortably, and execute both high-level design and necessary reliability work

Preferred Attributes (Nice To Have)

• Deep Rust experience, open-source contributions, or performance optimization skills (profiling, reducing allocations, lock-free structures)
• Domain depth in payment rails (card networks, bank rails, chargebacks, open banking) or accounting fundamentals (double-entry ledgers, regulatory reporting)
• Experience building risk, fraud, or compliance infrastructure (rule engines, device fingerprinting, sanctions screening, KYC/AML workflows)
• Familiarity with crypto, Web3, or on-chain infrastructure (wallet infrastructure, stablecoin flows)
• A background in platform engineering, cloud infrastructure, or observability

Benefits

• Competitive Compensation: Highly competitive base salary
• Equity & Upside: Generous equity and token allocation, offering direct alignment with the long-term growth and success of the platform
• High Autonomy: A culture that trusts professional judgment, providing the freedom to make critical decisions without layers of bureaucratic approval
• Impact: The opportunity to build core infrastructure for a globally dominant platform shaping the future of digital interaction and decentralized finance