Senior Software Engineer

Senior Software Engineer, Financial Infrastructure

Location: Remote (Canada)

We’re looking for a Senior Software Engineer to join a correctness-critical engineering function responsible for money movement, ledgering, reconciliation, and core financial infrastructure. This is a deeply technical role working on systems where precision, reliability, and sound engineering judgment are essential.

You’ll work alongside a highly senior team and engage directly with complex distributed systems that move and track customer funds. This role is ideal for someone who thrives on solving high-impact problems, enjoys owning critical paths end-to-end, and operates confidently in environments where correctness comes first.

• Design and implement distributed systems for money movement, internal ledgering, reconciliation, and banking integrations.

• Develop reliable, safe workflows in systems where financial correctness is mission-critical.

• Contribute across architecture, design, coding, testing, and operational support.

• Set engineering standards for correctness, reliability, and data integrity.

• Lead and contribute to architectural decisions across the Fin Infra domain.

• Review designs and code to ensure high quality, correctness, and safety.

• Diagnose and solve complex production issues in high-severity environments.

• Build robust monitoring, alerting, runbooks, and fail-safes for critical financial systems.

• Participate in on-call rotations with a focus on prevention, resilience, and continuous improvement.

• Contribute to incident analysis, ensuring learnings translate into stronger systems.

You are a deeply senior engineer (Senior/Staff level) with:

• Strong experience building distributed systems (concurrency, ordering, idempotency, state machines).

• Deep backend engineering fundamentals using a modern language (Python is a plus).

• Proven experience with correctness-critical or high-reliability systems.

• (Preferred)
  
  Experience with financial infrastructure, such as:

  • ACH, payouts, FX, banking rails

  • Ledgering systems

  • Reconciliation or high-stakes transactional workflows

• Strong command of ACID, consistency models, schema evolution, and transactional boundaries.

• Ability to reason clearly about system behaviour under failure.

• You communicate risk, constraints, and trade-offs clearly and concisely.

• You remain calm and analytical under pressure, especially during incidents.

• You collaborate effectively with very senior engineers and cross-functional partners.

• You thrive in ambiguity and operate well within regulatory or constraint-heavy environments.

• You take ownership end-to-end and bring a high bar for engineering quality.