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Software Engineer (Bill Pay & Procurement) at Ramp · Katori

We’re looking for a backend engineer who loves complex systems, obsesses over correctness, and wants to shape how money moves in modern finance software. You’ll help design and scale the infrastructure that powers our payment rails, ensures auditability across products, and unlocks the next wave of AI-driven automation
It’s a chance to work on systems that actually move money, with a team that cares deeply about precision, reliability, and scale. The problems are tough, the stakes are high, and the impact is massive
Design and build core P2P systems, from invoice ingestion and approval workflows to payment orchestration and reconciliation logic
Enable AI agents to classify, validate, and process invoices automatically, reducing manual review and accelerating financial close
Own backend services that process large volumes of financial events across Bill Pay, Procurement, and Treasury
Collaborate cross-functionally with Product, Finance, and Data to translate accounting and compliance policies into robust, testable code
Extend Ramp’s financial ledger to handle new transaction types, international payments, and automated audit trails
Drive technical excellence around reliability, observability, and data integrity in systems where correctness directly impacts financial reporting
Continuously improve developer tooling and internal APIs that make P2P data accessible across Ramp’s product ecosystem

We’re looking for a backend engineer who loves complex systems, obsesses over correctness, and wants to shape how money moves in modern finance software
Comfort building event-driven systems and scaling high-volume, low-latency architectures
3+ years of backend engineering experience, ideally in fintech, payments, or transactional systems
Deep knowledge of Python (or a comparable backend language) and SQL
Ability to work closely with finance, risk, and product stakeholders to translate business rules into software logic
Passion for building systems that are precise, reliable, and extensible as Ramp scales globally
Proven experience designing and maintaining data-intensive distributed systems with strong consistency and auditability requirements
Strong system design and debugging skills; you care about correctness as much as speed
Experience with accounts payable, payments, or reconciliation systems
Familiarity with accounting or ERP integrations (e.g. NetSuite, QuickBooks, Oracle)
Background in compliance-heavy or regulated domains
Exposure to AI-driven automation or interest in working with AI/ML teams to build intelligent finance workflows
Desire to move quickly while maintaining an uncompromising standard for data accuracy and auditability

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