Sr. Backend Engineer

**Senior Backend Engineer** **Location:** New York City (Hybrid) **Pay:** $190k - $210k Base + Equity *No Sponsorship Offered* About the Opportunity A rapidly growing technology company is seeking a Senior Backend Engineer to lead the development of a business-critical external API platform used by strategic partners and automated systems. This is a highly visible individual contributor role with significant ownership over API design, data modeling, and technical decision-making. The position is ideal for an engineer who enjoys building correctness-critical systems, designing scalable APIs, and driving architectural decisions while remaining deeply hands-on with coding. The role offers a clear path toward Staff-level responsibilities through technical impact and ownership. Responsibilities * Design, build, and maintain external APIs used by partners and third-party integrations. * Own technical decisions related to API architecture, scalability, performance, and reliability. * Develop systems that support pricing, booking, reservations, inventory management, and transactional workflows. * Create reusable patterns and frameworks that enable other engineers to build integrations efficiently. * Collaborate closely with senior engineering leadership on foundational architecture and long-term technical strategy. * Design and evolve relational data models supporting new products, services, and business capabilities. * Ensure system correctness, observability, and operational excellence across distributed services. Must Have Qualifications * 6+ years of professional software engineering experience. * Strong backend engineering experience with transactional or correctness-critical systems (booking, reservations, payments, inventory, orders, etc.). * Experience designing and shipping external APIs and third-party integrations. * Strong understanding of relational databases, data modeling, and system design. * Experience building production systems using modern backend technologies and cloud infrastructure.