Top Tech Jobs & Startup Jobs in San Francisco Bay Area, CA

Senior full‑stack engineer responsible for building and maintaining front‑end and back‑end components, designing and implementing APIs, optimizing performance and scalability, ensuring secure coding, troubleshooting and upgrading software, participating in code reviews, documenting systems, and managing hosting and database infrastructure while collaborating with cross‑functional teams.

Bridge product vision and technical implementation by developing features, troubleshooting, and collaborating with product, design, and engineering teams. Contribute to product strategy, define technical requirements, optimize processes, and ensure product quality and scalability.

Design, implement, and optimize machine learning and deep learning models; preprocess and analyze large datasets; integrate models into production; monitor performance and troubleshoot; collaborate with engineers, data scientists, and stakeholders; stay current with ML/AI advances.

Design, build, and maintain server-side application logic, databases, and APIs. Optimize performance and scalability, implement security measures, debug issues, and collaborate with frontend and product teams to deliver reliable backend systems.

Design and run experiments to evaluate large AI models across reasoning, style, robustness, and preferences. Develop new metrics and evaluation protocols, analyze large-scale human voting data, collaborate with engineers to productionize findings, prototype research ideas, and publish results to improve model reliability and alignment.

Build and implement user-facing web interfaces from designs using HTML, CSS, and JavaScript. Create interactive, responsive, and accessible features, optimize performance, ensure cross-browser compatibility, test and debug code, maintain existing applications, and collaborate with back-end developers for integration.