Co-Founder & CTO

We are developing advanced large language model–driven reasoning architectures capable of autonomous planning, multi-step problem solving, and system-level optimization in semiconductor workflows. · Architect the core agentic AI framework powering chip design workflows · Design s ...

Join an existing Cold Start venture as CTO and co-founder to prototype and launch products leveraging their playbook and technical resources. · Former founders only - exclusively looking for those who have started companies before. · ...

About is building tools that help users consistently create effective prompts and AI workflows. · We're focused on practical outcomes, fast iteration, and a clean user experience. · Role Overview · We are seeking a hands-on CTO Co-Founder to own technical direction and execution. ...

+This is a full-time role for a Co‑Founder – CTO (Equity-based only) located in the San Francisco Bay Area. · +Drive the technical vision and strategy of the company · Lead the development of innovative technologies · ...

Cold Start Ventures is looking for exceptional CTO co-founders to lead new companies in our portfolio. · Join an existing Cold Start venture as CTO and co-founderPrototype and launch the product, leveraging our playbook and technical resourcesRecruit and lead a world-class teamBu ...

We're looking for a Co-Founder & CTO to join the founding team and help shape both the product and technical direction of SUPPLIFLEX.This is an equity-only role initially, with the same risk profile as the existing founders. · ...

This full-time role for Co‑Founder – CTO in San Francisco Bay Area drives technical vision and strategy. · ...

We are seeking visionary and resourceful technologists to become CTO co-founders. · Sisu is a founder-friendly incubator dedicated to partnering with entrepreneurs from the earliest stages. · ...

Sisu founder-friendly incubator partnering with entrepreneurs from earliest stages. · We seek visionary technologists to become CTO co-founders building own startups with unparalleled guidance and resources. · ...

We are on a mission to revolutionise hiring by helping businesses find their perfect match through a blend of human insight, behavioural intelligence and AI-powered talent discovery. · Our platform bridges the gap between employers and talent combining data-driven decision-making ...

We are building a Digital Subject Matter Expert for the energy sector—an AI system capable of expert reasoning · real-time diagnostics, · and proactive guidance for power plants, · transmission networks, · distributed energy assets. · ...

We are currently refining our MVP, running customer discovery, and preparing for early pilots. We're now looking for a technical co-founder to join the journey.We're looking for a · Co-Founder & CTO · to join the founding team and help shape both the product and technical directi ...

We're seeking an exceptional CTO Co-Founder to join us in building a transformative AI startup. If you've spent the last 20+ years crafting innovative tech, and in recent years built real-world AI/ML solutions that solve meaningful problems — this might be your calling. · We've v ...

We enable connection, experience sharing, and collaboration, fostering the creation of transformative startups and supporting innovative ideas that shape the future of the entrepreneurial ecosystem. · The Studio Framework: · You will build the shared technical infrastructure (the ...

We are an early-stage AI startup building next-generation applications in the clinical trials and healthcare research space. · Own and lead overall technical architecture and product engineering strategy · Implement AI/ML solutions including agentic workflows and small language m ...

We are seeking a hands-on CTO Co-Founder to own technical direction and execution. You will lead architecture and development across the stack, ship features end-to-end, and build a stable foundation for scale. · ...

We are looking for a strong technical co-founder to own backend architecture and database systems and help lead the transition toward a B2B-ready platform.Design scalable, production-grade database schemas · Own event-based data models for B2C user behavior · Build aggregation pi ...

We are an early-stage AI startup building next-generation applications in the clinical trials space. · Own and lead overall technical architecture and product engineering strategy · Implement AI/ML solutions including agentic workflows and small language model (SLM) deployments · ...

+We are developing our flagship product: Pump.Sports, a web3 gamified social platform that allows users to create fantasy sports teams based on each night's televised matchups. · ...

We are aiming for Y Combinator. We're building with a YC mindset: high ownership, fast iteration, and strong technical foundations. · 5+ years backend engineering experiencePython/FastAPI experienceDeep database expertise (schema design, migrations, performance tuning)Experience ...