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

Owns complex business operations initiatives end to end, including contract renegotiation, compute-spend management, office moves, recruiting support, supplier decisions, and executive logistics. Partners with founders and functional leaders to identify friction, solve problems quickly, and build scalable operational systems. The role requires a hands-on generalist with commercial judgment, negotiation ability, operational experience, and a bias for action.

Build developer tools and research infrastructure that accelerate engineering and AI research. Responsibilities include improving coding agents for development, testing, and code review; creating better development environments, faster tests, and reliable deployment workflows; and building a platform for launching experiments, comparing results, and guiding future research.

Build the AI platform enabling scientists and agents to collaborate on therapeutic research. Develop agent execution, model inference, and scientific tool abstractions; create products that accelerate experimentation and decision-making; and partner with scientists to define workflows across people, agents, and models. The role requires strong software architecture, product judgment, and practical understanding of agent reliability and evaluation.

Develop and execute strategic initiatives for Chai’s AI-powered molecular design business. Frame complex business questions, conduct customer and expert research, build quantitative analyses, make recommendations, and drive decisions through implementation. Projects may cover pricing, market expansion, product strategy, lab capacity, computing infrastructure, and data generation. The role requires structured quantitative thinking, sound judgment with incomplete information, cross-functional influence, and the ability to learn technical domains quickly.

Own Chai Discovery’s brand, messaging, identity, website, events, and marketing systems as its first marketing hire. Build a compelling presence for pharma executives, scientists, AI researchers, and prospective employees. Set creative direction, manage agencies and vendors, support founders and researchers with communications platforms, lead conference and partner-event experiences, and create a repeatable marketing playbook while translating complex technical and scientific work into accessible stories.

Build and optimize distributed machine learning infrastructure for large-scale model training and inference. Responsibilities include profiling training runs, improving compute, communication, and storage efficiency, developing parallelism and quantization strategies, creating CUDA and Triton kernels, and ensuring fault tolerance, checkpointing, deterministic orchestration, and reliability across GPU clusters. The role partners closely with research scientists to scale new model architectures and training recipes.

The AI Engineer will develop and optimize AI models and high-performance software systems for drug discovery, collaborating with researchers and maintaining infrastructure.

Own Chai’s end-to-end financial operating system, including the close process, financial modeling, cash forecasting, spend visibility, revenue recognition, compliance, and leadership reporting. This first finance hire will manage complex AI compute, data, and pharmaceutical contract finances while improving workflows and supporting founders in a fast-moving startup environment.

The Engagement Management role involves building partnerships, ensuring their success, collaborating with scientists, and shaping the company's future with actionable insights.

Chai Discovery states that it does not offer internships but invites individuals passionate about AI, frontier biology, and advancing medicine to share their background for future contact. The company develops AI-powered molecular design tools and works with major pharmaceutical companies on drug discovery. It offers opportunities to work with leading researchers on high-impact AI and biology challenges, within a fast-paced, ownership-driven culture.