Senior Backend Engineer – Card Solutions (Node.js/TypeScript)

About the role

As a Senior Software Engineer on the Card Engineering team, you will build the core services that power Reap’s stablecoin‑enabled card platform, including transaction processing, fraud detection, and lifecycle management. You will work closely with product, risk, finance and compliance teams to deliver secure, high‑performance financial systems used by global clients and partners.

Key responsibilities

• Design and implement backend services for card transaction processing, fraud detection and program management.
• Contribute to system architecture decisions focusing on performance, fault tolerance and maintainability.
• Collaborate with cross‑functional stakeholders (Product, Risk, Finance, Compliance) to ensure robust, compliant solutions.
• Write clean, observable, well‑tested code within a service‑oriented architecture.
• Participate in code reviews, incident response and continuous reliability improvements.
• Help evolve engineering practices, tools and system designs as the platform scales.

Required profile

• 6+ years of software engineering experience, preferably in fintech or platform teams.
• Proven experience building backend systems in a typed language (e.g., TypeScript, Java, Go).
• Strong understanding of distributed systems concepts such as async processing, retries, observability and eventual consistency.
• Ability to balance correctness, performance and maintainability in complex systems.
• Effective communicator who can work in fast‑moving, cross‑functional environments.

Required skills

• TypeScript
• Node.js
• NestJS
• AWS

What we offer

• High‑ownership, high‑impact role at the frontier of stablecoin‑powered finance.
• Autonomy as the technical owner of a key partnership and product area.
• Insurance coverage after probation and a Reap Card stipend.
• Access to AI tools, a culture of innovation, inclusion and continuous learning.