STAFF SOFTWARE ENGINEER PAYMENTS

NYC candidates preferred; exceptional candidates based in London are also considered. On-site work model.

About the role

Baton Corp is looking for a Staff Software Engineer – Payments to design and build core payment services powering high-scale products in the crypto ecosystem. This is a high-ownership engineering role where you'll solve complex, correctness-critical problems across payment flows, settlement, reconciliation, and financial infrastructure.

Responsibilities

• Design and build reliable, scalable payment and financial infrastructure.
• Own systems end-to-end, from architecture and implementation to production and on-call.
• Solve complex problems involving payment processing, settlement, reconciliation and auditability.
• Build distributed systems with strong guarantees around idempotency, consistency and correctness.
• Work closely with experienced engineers in a fast-moving, low-bureaucracy environment.
• Drive technical decisions and contribute to building systems from 0 → 1.

Requirements

Above all, we want a very experienced engineer who solves problems—someone with the judgment to make high-impact technical decisions without layers of approval, and the instinct to know when to move fast and when a money-movement system demands you slow down and be sure. Concretely, you:

• Are an excellent backend / systems engineer: We build in Rust, and you'll write it here—but we're open to strong engineers from other systems backgrounds (Go, C++, Java/Scala, and similar). If you've built high-performance, mission-critical systems and care about doing it well, we're confident you'll get productive in Rust quickly; deep Rust experience is a bonus, not a gate.
• Think in distributed systems: Consistency models, fault tolerance, idempotency and exactly-once semantics, async and event-driven patterns, sagas—you've designed systems that stay correct under partial failure and scale.
• Have worked where correctness matters: Payments or fintech ideally—high-throughput transaction processing, ledgers, or financial infrastructure—or another domain where being wrong has real consequences and "mostly works" isn't acceptable.
• Treat money and data as sacred: Strong database fundamentals (transactions, indexing, query and caching strategy, event streaming) and a real respect for auditability and reconciliation.
• Are security-first by instinct: Key management, secrets hygiene, least privilege, and a clean audit trail are second nature.
• Operate with ownership: Bias toward action, comfortable in ambiguity, and you finish what you start—including the unglamorous reliability and operability work.

Skills

Things that make you stand out:

• Deep Rust experience or open-source contributions, and a feel for performance work (profiling, reducing allocations, lock-free structures).
• Payments domain depth (card networks, bank rails, chargebacks, open banking).
• Risk / fraud systems (rule engines, feature stores, device fingerprinting).
• Compliance infrastructure (sanctions screening, KYC/AML workflows, audit trails).
• Crypto / on-chain experience (wallet infrastructure, stablecoin flows, on-chain programs). You don't need to be a domain expert, but comfort in the space helps.
• Accounting fundamentals (double-entry ledgers, reconciliation, regulatory reporting).
• Platform / cloud / observability background to complement the application work.

Benefits

Competitive compensation package including base salary, equity, and tokens.