Senior Software Engineer, ProductLocation: San Mateo, California, United States Full-Time | Hybrid (3+ days/week on-site) | Mission-Driven AI StartupA cutting-edge, venture-backed startup based in San Mateo, CA is seeking a Senior Software Engineer to join its Product Engineering team. This high-growth organization is building advanced AI infrastructure to automate complex, mission-critical workflows across industries like healthcare, finance, and telecommunications.As a Product Engineer, you’ll play a key role in designing and building next-generation applications and tools that dramatically improve how businesses execute internal processes. You’ll work on meaningful challenges, influence product direction, and contribute to a platform at the forefront of AI and workflow automation.What You’ll DoLead development of large-scale, user-facing application features across the full stack.Design and implement systems that balance usability, scalability, and maintainability.Enhance platform tooling on both front-end and back-end components.Build secure, scalable APIs, middleware, and authentication services.Collaborate closely with cross-functional teams to align system improvements with product vision.Drive best practices in engineering, including testing, documentation, and code quality.Required Skills & Experience2+ years of hands-on software engineering experienceProficient in JavaScript/TypeScript, React, and PythonStrong experience across both frontend and backend developmentTrack record of shipping high-quality, production-grade softwarePassion for clean architecture, performance optimization, and great user experiencesAbility to work on-site at least 3 days per week in San Mateo, CAPreferred AttributesExperience contributing to fast-paced startup environmentsDeep interest in emerging technologies and infrastructure powering AI systemsDesire to own projects end-to-end and collaborate in a mission-oriented teamMaster’s degree in Computer Science or related field preferredCompensation & BenefitsBase Salary: $170,000 - $250,000 (commensurate with experience)Full benefits package (health, dental, vision, etc.)Relocation assistance possible for the ideal candidateWork alongside elite engineers, founders, and advisors from top-tier technology companiesBe part of a mission-driven company building technology that mattersJob DetailsEmployment Type: Full-TimeSeniority Level: Mid-SeniorVisa Sponsorship: Not availableSecurity Clearance: Not requiredTravel: Not requiredEducation: Master’s degree or higher preferredThis is a unique opportunity to shape a powerful product and platform while working at the intersection of AI, engineering, and real-world impact.