Senior Backend Engineer - AI Application Development

San Francisco 17 days agoFull-time External
Negotiable
Join a Dynamic AI SaaS Startup! Location: SoMa, San Francisco, CA | Full-Time | Onsite Salary: $200K-$325K + Meaningful Equity (1%+) Be part of an innovative AI SaaS start-up that is revolutionizing the way businesses build custom applications. Our cutting-edge application builder enables business users to seamlessly collaborate with AI across various enterprise systems, tackling challenges in multi-day workflows, complex integrations, and enterprise-grade compliance. About Your Role We are seeking an experienced Backend Engineer to take the lead in developing our backend systems and architecture. This is a unique chance to own critical systems from the ground up, influencing architecture, scalability, and reliability. You will engage in exciting challenges such as orchestrating multi-system workflows, processing large-scale data asynchronously, and securely executing AI-generated code, all while working closely with our applied AI team. Your Responsibilities • Design and develop the core workflow engine that integrates agents, data sources, and frontend interfaces. • Build and optimize a TypeScript-based backend, incorporating asynchronous execution, retries, and reliable routines. • Establish and manage integration layers for REST APIs, SQL databases, and various third-party systems. • Collaborate with the applied AI engineering team to embed automation and intelligence across platforms. • Set and promote best practices for backend architecture, reliability, and developer experience as the company grows. Who You Are (Must-Haves) • 4-15 years of professional experience in software engineering. • Strong expertise in TypeScript, Node.js, and modern backend architectures. • Proven experience designing complex data models and managing asynchronous tasks/workflows. • P prior work experience in early-stage startups or high-growth environments. • Experience integrating multiple systems, with a focus on REST APIs and SQL. • Passionate about developing scalable systems and thriving in a startup culture. • Exceptional problem-solving, collaboration, and communication skills. Additional Skills (Nice-to-Haves) • Experience with building or integrating AI / LLM-powered applications. • Familiarity with Temporal or similar orchestration and workflow systems. • Exposure to modern backend frameworks or cloud technologies (AWS, GCP, Kubernetes). Why Join Us? • Competitive salary: $200K-$325K along with meaningful equity (1%+) in a fast-growing company. • Work with experienced founders who have a track record of scaling AI and enterprise SaaS products. • Influence the architecture and direction of a high-impact backend system. • Be part of a small, highly motivated team at the forefront of AI and enterprise solutions.