Fullstack Engineer / Typescript Backend

Title: Full Stack Software Engineer / TypeScript BackendLocation: San Francisco, CASalary: $220K-$290K + EquityA rapidly growing SaaS AI startup in San Francisco is hiring a Full Stack Engineer using Typescript to help build and scale a customer-facing platform that transforms complex enterprise data into actionable software. This role is looking for an engineer who can think beyond implementation and who is product-focused and able to work 80% backend and 20% frontend for development. This is a startup environment where engineers take ownership, work closely with leadership and customers, and play a direct role in shaping the product.This role is primarily backend-focused using Typescript, with some frontend work, and centers on building systems that handle can handle and understand large-scale, real-time data. You will develop and improve core product features, working across TypeScript, React, AWS/Google Cloud Platform, PostgreSQL, and any Python, Rust, Terraform is a plus. As an AI-first platform, experience with GenAI, LLMs, or agent based systems is a huge plus. This is a product-driven role, ideal for someone who is comfortable working with complex data, who enjoys solving ambiguous problems, and who can bridge the gap between technical systems and end-user value.Experience 3+ years of experience in full stack or product-focused software engineering Strong TypeScript experience building backend services (e.g. NestJS, or similar) Experience building customer-facing applications using modern frontend frameworks (e.g. React) Experience working with large, complex datasets and real-time systems Experience with GenAI either professionally or with personal projects Strong product mindset with the ability to translate technical systems into user-facing features Comfortable working in fast-moving startup environments and collaborating with customersBenefits Equity Paid Time Off Medical, dental, and vision insurance Great Onsite company culture with food stipends and flexible work schedule Opportunity to work closely with leadership and customersOscar Associates Limited (US) is acting as an Employment Agency in relation to this vacancy.