Staff Backend Engineer (Financial Ledger)

About the role

We are seeking a Staff Backend Engineer to own and evolve the Financial Core system that underpins a fast‑growing travel‑tech SaaS platform. Based in Ireland, you will work on a critical backend service that ensures financial accuracy across revenue recognition, payments, ledger events, and profit calculation.

Key responsibilities

• Take technical ownership of the Financial Core system, guiding its evolution toward a scalable V2 architecture.
• Validate lifecycle flows, reconciliation logic, and financial correctness across distributed services.
• Design and maintain ledger‑style financial models, including revenue recognition, cost allocation, and multi‑party transaction flows.
• Enforce strict financial invariants within an event‑driven architecture to guarantee deterministic, auditable outcomes.
• Collaborate with finance and engineering leadership to translate business rules into robust technical implementations.
• Identify gaps in the current production system and drive architectural improvements.
• Support reliability and scalability of payment, billing, and financial reporting domains.
• Contribute hands‑on code while shaping long‑term architectural direction.

Required profile

• 8+ years of backend engineering experience, preferably with financial, billing, or transactional systems.
• Proven track record building or maintaining payment systems, billing engines, ERP solutions, or subscription infrastructure.
• Deep expertise in ledger systems, reconciliation mechanisms, and deterministic financial correctness.
• Strong understanding of revenue recognition, liabilities, cost structures, and multi‑party money flows.
• Experience evolving complex production systems without disrupting existing functionality.

Required skills

• Python
• PostgreSQL (relational data modeling)

What we offer

• Opportunity to shape the financial backbone of a high‑growth SaaS platform.
• Collaborative environment with finance and engineering stakeholders.
• Technical leadership role with hands‑on development.