Full-Stack Software Engineer

About the company Our client is a fast-growing software company. The role Raydar is recruiting for this role on behalf of our client. Design and run backend-heavy services for a software platform while also delivering the front-end features that make them usable. Partner closely with company leadership and external users, holding wide ownership of technical and product choices from the outset. What you'll do - Build and maintain backend services that support a data-driven software platform. - Design data models for datasets, test runs, traces, versioned content and user-defined quality criteria. - Own connections to third-party systems across their lifecycle, from authentication and webhooks to syncing, error handling, monitoring and production support. - Carry features from initial design through release and ongoing iteration based on feedback. - Work hands-on with customers to understand their environments, diagnose problems and turn bespoke requests into reusable capabilities. Requirements What we're looking for - 2 to 4 years of professional experience shipping and operating live software, with some of it in a fast-moving startup setting. - Strong backend skills in TypeScript and Node.js, plus the ability to deliver across the full stack. - Solid PostgreSQL knowledge and practical exposure to asynchronous processing or task orchestration. - A self-directed approach and a history of seeing projects through from idea to launch on your own. - An appreciation of why validating non-deterministic AI behavior calls for different methods than traditional unit tests. - Comfortable working on-site in San Francisco. Bonus points - Early or founding engineering experience at a young company. - Background building integration-heavy or API-driven products for business customers. - Familiarity with enterprise AI, observability or distributed systems. - Exposure to a fast-growing AI company. Benefits Compensation and benefits - Base salary: USD 120,000 to 180,000 per year - Equity Location and work model - San Francisco, United States - On-site, in person - Full-time