Staff Backend Engineer

Job DescriptionJob Description Job Description Staff Backend / Platform Engineer Full-Time | Hybrid | New York City or Austin Were seeking a seasoned Backend/Platform Engineer to help build the foundation of a new API-driven platform that simplifies how money moves through a complex, high-stakes domain. Youll work across systems that touch everything from external developer APIs to internal transaction orchestrationlaying the groundwork for reliable, secure, and scalable services as we grow. What Youll Do Design and build core backend services powering mission-critical money movement workflows Own external-facing APIs and webhook infrastructure used by partners and third parties Drive integration with external services and internal platforms to ensure clean, reliable data flows Collaborate across product and engineering teams to build abstractions balancing flexibility with simplicity Operate in a fast-paced, collaborative environment with high standards and low ego Help scale our systems from tens of millions to hundreds of millions in volume Contribute to architectural decisions, developer tooling, and API reliability from day one Requirements What Were Looking For 8+ years of backend or platform engineering experience, ideally in fast-paced or startup environments Strong experience building and scaling REST APIs and webhook systems Experience with transactional systems, reconciliation, or multi-service workflows (e.g., payments, event processing) Proficiency in modern backend stacks (e.g., TypeScript, Node.js, Ruby on Rails, PostgreSQL) Familiarity with cloud infrastructure (AWS), containerized apps, CI/CD workflows, and system monitoring Strong testing practices and experience with GraphQL or WebSocket APIs is a plus Clear communicator with a collaborative mindset and thoughtful decision-making in ambiguity Comfortable working onsite 35 days/week in New York City or Austin #J-18808-Ljbffr