Posted Oct 17, 2026

Senior Full Stack Engineer

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Senior Full Stack Engineer - AI Startup Company: Confidential Client | Series A AI Startup Location: Remote, United States or Canada Compensation: $200,000–$275,000 Base + Equity (0.2%–0.4%) Employment Type: Full-Time Travel: One week onsite in San Mateo, CA, every six weeks About Our Client Our client is a well-funded Series A artificial intelligence startup developing advanced AI technology for physical system design and engineering. With $73 million in funding, including a recent $50 million Series A, the company is building an AI-powered engineering platform designed to transform how complex physical systems are developed. We are seeking a highly skilled, product-minded Senior Full Stack Software Engineer who thrives in early-stage environments, takes ownership, and enjoys solving complex technical challenges. Key Responsibilities Design, develop, and deploy complex software products from concept through production. Build scalable full-stack applications with a strong emphasis on backend engineering. Develop and optimize frontend applications using React and TypeScript. Own system architecture, infrastructure, deployment, and production reliability. Leverage AI coding agents to accelerate software development and improve engineering productivity. Collaborate with founders, AI researchers, and engineering teams to prototype and deliver innovative product capabilities. Establish engineering best practices in a fast-paced, AI-native development environment. Required Qualifications (Mandatory) 3–10 years of professional software engineering experience. Strong full-stack development experience, including backend engineering and React/TypeScript. Proven experience building complex products or major features from 0 to 1 and launching them into production. Experience owning system architecture, deployment, and reliability end to end. Hands-on experience using AI coding agents in software development workflows. Strong problem-solving abilities and the capacity to work independently with minimal oversight. Demonstrated ownership and adaptability in startup or similarly fast-moving engineering environments. Must reside in the United States or Canada and have existing work authorization without requiring sponsorship. Ability to travel to San Mateo, California, for one week every six weeks. Background in early-stage AI startups. Interest or experience in physical systems, engineering design, CAD, or simulation. We are only accepting applications from candidates who meet all required qualifications. Preferred Qualifications Experience with .NET, React, and TypeScript. Experience developing complex, customer-facing software products. Demonstrated technical creativity through personal projects, open-source contributions, or entrepreneurial initiatives. Compensation & Benefits Base Salary: $200,000–$275,000, with flexibility for exceptional candidates. Equity: 0.2%–0.4%. Remote work within the United States or Canada. Medical, dental, and vision insurance. 401(k) with 3% employer match for eligible employees. Unlimited PTO. Potential sign-on bonuses and relocation assistance.