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

Contract GPU kernel optimization role: analyze profiler metrics, identify bottlenecks, and improve kernel performance across modern GPU hardware. Implement and modify C++17, Python, and GPU code using CUDA/HIP/shaders, document optimization decisions, and collaborate as a freelance specialist (20+ hrs/week preferred).

Create high-quality motion graphics, animations, and visual effects using Adobe After Effects. Collaborate with creative teams to produce digital content, edit and composite video, optimize project files for multiple outputs, and troubleshoot rendering issues while maintaining brand consistency and meeting deadlines.

Review, validate, and annotate logistics documents (packing lists, bills of lading, inventory registers), evaluate supply chain workflows, recommend process improvements, provide structured feedback for AI training datasets, collaborate with cross-functional teams, and contribute to documentation and training resources to improve logistics operations.

Translate design specs into pixel-perfect, responsive web interfaces using TypeScript, CSS3, and HTML. Follow design systems and accessibility (WCAG) standards, optimize frontend performance, resolve spec ambiguities, collaborate remotely via documentation and code reviews, and provide frontend expertise to support AI model evaluation.

Design original Olympiad-level math problems, evaluate AI-generated solutions for correctness and rigor, and produce clear, high-quality reference solutions and reviews to improve AI mathematical reasoning.

Evaluate and improve AI-generated enterprise sales workflows, create gold-standard examples for prospecting through proposals, design evaluation rubrics, perform simulated end-to-end sales tasks in modern platforms, produce executive-facing sales materials, and collaborate with researchers and SMEs to enhance AI sales reasoning.

Remote independent-contractor research role for verified Google Business Profile owners/administrators. Participants will manage and review GBP content, follow project guidelines, provide written feedback, and help improve AI understanding of local business profiles. Flexible schedule; weekly payments based on approved work.

Design reproducible coding environments and high-quality reference solutions to train AI. Create and validate complex programming challenges, debug and optimize codebases, refactor legacy systems, document technical decisions, and review technical submissions while collaborating remotely.

Remote contract role applying equity research expertise to train and evaluate AI models. Review AI-generated financial analyses, analyze SEC filings and financial statements, create evaluation tasks and structured datasets, and collaborate with AI researchers to improve financial reasoning and assessment criteria. Minimum 2 years equity research experience; 10 hours/week minimum commitment.

Lead end-to-end recruitment marketing campaigns: plan and execute paid and organic content, manage content pipelines and calendars, measure campaign performance across channels, generate optimization insights, and coordinate with recruiters and stakeholders to improve candidate attraction and conversion.