# Founding Software Engineer - Backend at Hypercubic

- Company: Hypercubic
- What the company does: Hypercubic is agentic AI for mainframe modernization, helping enterprises and governments preserve institutional knowledge and modernize COBOL. Backed by Y Combinator.
- Company website: https://www.hypercubic.ai/
- Type: Startups (AI role)
- Level: Mid level
- Location: San Francisco
- Work setup: On-site
- Pay: $125K to $300K base salary per year (USD)
- Posted: 2026-11-03
- Apply by: 2026-12-18
- Apply: https://jobs.ashbyhq.com/hypercubic/497e109c-23cb-4d9a-a00c-14d0ebb86684?utm_source=1752vc&utm_medium=careers
- Page: https://www.1752.vc/careers/jobs/hypercubic-founding-software-engineer-backend/

## 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

Tags: Engineering

Source: 1752vc Careers, https://www.1752.vc/careers/jobs/hypercubic-founding-software-engineer-backend/