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

Build and scale an AI-powered full‑stack editor and experimentation platform. Implement backend services, ship intuitive React UIs, integrate APIs and AI models, collaborate with founders and customers, and own end-to-end features in a fast-paced startup.

Build and deploy AI-driven web applications across frontend and backend. Design scalable backend systems, responsive TypeScript frontends, ETL pipelines, and integrate ML models into production. Work with cloud platforms, containerization, APIs, automated testing, and cross-functional teams to deliver robust, high-performance solutions.

Lead AI-enabled financial planning and strategic analysis, build data-backed business cases, refine unit economics, deliver executive-level insights, integrate ML into FP&A, and track KPIs to drive profitability and strategic decisions.

PhD-level physicists will design challenging graduate-level physics problems and contribute high-quality datasets to improve AI model reasoning, ensuring scientific rigor and consistency while collaborating remotely and asynchronously.

PhD-trained STEM experts will design challenging domain-specific problems and datasets to improve large language model reasoning and accuracy. Work remotely, collaborate asynchronously, review and refine technical content, and adhere to structured guidelines. Ongoing independent-contractor role, 15–20 hours/week (up to 40), paid weekly.

Review and edit tasks created by professionals across industries to improve clarity, structure, and alignment with quality standards. Provide actionable feedback, apply consulting frameworks, and ensure consistency with project guidelines. Work asynchronously as an independent contractor for a remote AI research project.

Serve as a domain expert in electrical engineering to identify and close knowledge gaps in LLMs. Collaborate with research teams to design and evaluate complex problems, provide detailed written feedback, and improve AI model performance. Remote, contractor role with weekly pay and flexible hours.

Review, validate, and refine AI-generated accounting analyses, audit reports, and financial statements for compliance with GAAP/IFRS. Tag content, provide structured feedback on accuracy and clarity, and support benchmarking of AI model performance in financial domains.

Develop and enhance scalable game systems using O3DE with C++ and Lua. Implement high-fidelity 3D rendering pipelines, customize engine modules for multiplayer environments, profile and resolve performance issues, collaborate with cross-disciplinary teams, produce technical documentation, participate in code reviews, and contribute to agile development practices.

Support AI training initiatives by developing and refining financial models, translating market research and due diligence into structured AI training datasets, and partnering with stakeholders to convert complex financial concepts into training inputs. Evaluate and improve AI-generated financial analyses, identify gaps in modeling or valuation assumptions, and contribute strategic insights to enhance AI-powered private equity tools in a fully remote environment.