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Theory Ventures in San Francisco is seeking an experienced engineer to design and build core data models while engineering AI-assisted tools to optimize schema definitions. The role involves scaling a

Trial Library, Inc. is seeking a Staff Engineer based in San Francisco, CA to lead backend development and data platform enhancements. This role focuses on leveraging cloud-native architecture to impr

Patreon is a media and community platform where over 300,000 creators give their biggest fans access to exclusive work and experiences. We offer creators a variety of ways to engage with their fans an

Rippling is seeking a Staff Software Engineer for its Events Platform team in San Francisco, CA. This role involves leading critical projects and managing scalable distributed data ingestion systems.

Tzafon is a foundation model lab building scalable compute systems and advancing machine intelligence, with offices in San Francisco, Zurich & Tel Aviv. We’ve raised over $12m in funding to advance ou

Additive-Ai is looking for an experienced Backend Engineer to join their team in San Francisco. This role involves building core systems to deploy machine learning capabilities, driving architectural

About the RoleThe Backend Platform team is the backbone of Perplexity’s product reliability, scalability, and performance, enabling every product and AI team to build with confidence. This high‑impact

Formal, located in San Francisco, is seeking a Senior Software Engineer to build a scalable data platform. The ideal candidate should have over 6 years of software development experience, strong knowl

Staff Full Stack Software Engineer (Backend) – Time Platform – Rippling About Rippling Rippling gives businesses one place to run HR, IT, and Finance. It brings together all of the workforce systems t

Whatnot is seeking a Senior Backend Engineer for the Horizontal Ops Platform team in San Francisco. This role involves building world-class internal operations tooling to meet complex operational need

deCircle is seeking a Senior Backend Engineer based in San Francisco to help develop Agentium Studio, a cutting-edge SaaS platform that intersects AI and security. In this role, you will design backen

Centaur Labs in San Francisco is seeking experienced Software Engineering professionals to drive foundational investments across the Super Agent and Integration & Platform teams. This role involves so

About Brain Co. Brain Co. is building the infrastructure that turns advanced AI research into real-world impact. We work at the frontier of productionizing AI for complex, high-stakes environments—par

About Brain Co. Brain Co. is an applied AI startup co-founded by Jared Kushner and Elad Gil, and backed by leading Silicon Valley builders including Patrick Collison and Andrej Karpathy. We are buildi

janitorAI in San Francisco is seeking an engineer to build AI interactive entertainment. The role involves improving product features deeply wired into our AI stack and enhancing performance, reliabil

AI Chopping Block, Inc. in San Francisco is seeking a backend engineer responsible for building backend services and cloud infrastructure that facilitate OpenAI’s capabilities. The role involves colla

Edison Scientific Inc. in San Francisco is looking for a Principal Full-Stack Engineer (Backend-Focused) to architect and scale their AI-driven scientific discovery platform. This key role involves ba

Edison Scientific in San Francisco is hiring a MTS (Full-stack, Backend-Focused, Python) to work on their core platform that automates scientific discovery. This position involves designing backend se

Edison Scientific Inc. is looking for a Senior Full-Stack Engineer to enhance our AI-driven scientific discovery platform. This role emphasizes backend development with opportunities to collaborate on

OpenAI is seeking backend engineers to design and scale systems driving AI in finance. You'll own the development lifecycle and collaborate with teams to deliver effective solutions. Ideal candidates

Perplexity is looking for experienced backend engineers to join our team specializing in building high-performance APIs. You will be responsible for designing and optimizing mission-critical APIs that

Perplexity AI in San Francisco is looking for a skilled backend engineer to design, implement, and scale high-traffic APIs. The ideal candidate will have over 5 years of experience with Python, Go, or

Onos Health Inc. is seeking a skilled Senior Backend Engineer to improve healthcare administration in the United States. This hybrid role, based in San Francisco, requires working at the office 2-3 ti

Monograph is seeking a skilled software developer to join our team in Mountain View, CA, focusing on developing Ambient AI solutions for healthcare. This full-time role emphasizes collaboration, innov