Hypercubic is agentic AI for mainframe modernization, helping enterprises and governments preserve institutional knowledge and modernize COBOL. Backed by Y Combinator.
About the role
We’re looking for a backend engineer with unusually strong engineering and design taste. You will work directly with the CTO to design, prototype, and productionize AI-powered systems from first principles. This is a founding role with meaningful ownership over architecture, product direction, and engineering culture. It is suited for someone with strong fundamentals and comfortable operating across abstraction layers, from low-level system reasoning to high-level interactions. Found on 1752vc Careers, the job board for startup and VC roles.
What they're looking for
- You care deeply about your work and the product
- You are comfortable with uncertainty and enjoy figuring out what to build before how to build it
- You have built complex agentic products or infrastructure
- You think in systems and feedback loops, not just features
- You can move fast and slow. Prototyping ideas in hours, then building enterprise-grade features to a high-quality bar
- You want to become world-class at AI engineering
More about this role
At Hypercubic, we’re building AI systems that can understand, reason about, and rearchitect large-scale legacy applications running on mainframes and COBOL. We work at the intersection of program analysis, knowledge extraction, and agentic systems, applied to some of the most critical enterprise software in the world (banks, insurance, airlines, government, and more).
We’re a small, deeply technical team in San Francisco, backed by top investors, and working with some of the largest organizations in the world.
Learn why we're excited about mainframe modernization.
We’re looking for a backend engineer with unusually strong engineering and design taste. You will work directly with the CTO to design, prototype, and productionize AI-powered systems from first principles. This is a founding role with meaningful ownership over architecture, product direction, and engineering culture. It is suited for someone with strong fundamentals and comfortable operating across abstraction layers, from low-level system reasoning to high-level interactions.
Rapidly prototype new concepts and features to validate ideas before full implementation.
Ship AI-driven features end to end, from model...
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