About the RoleWe'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.
What You'll Do- Rapidly prototype new concepts and features to validate ideas before full implementation.
- Ship AI-driven features end to end, from model interaction to user-facing workflows.
- Set early engineering standards around testing, reliability, and code quality.
- Translate ambiguous problem statements into concrete experiments, constraints, and working systems.
- Lead architecture decisions and long-term technical direction with the CTO.
- Collaborate with a highly diverse group of subject matter experts and customers from various industries (banks, insurance, airlines, and more).
You are a Fit if...- 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.
- You have a bias for action and a track record of working in fast-paced environments with urgency.
Nice to Have- Strong testing intuition, including TDD and property-based testing.
- Experience building and maintaining production-grade agentic or autonomous systems.
- Exposure to legacy systems (especially mainframes or COBOL), compilers, program analysis techniques, or high-performance computing (HPC).
- Familiarity with enterprise software constraints.
Logistics- Location: This role is in-person based in San Francisco, California.
- Benefits: Hypercubic offers generous health, dental, and vision benefits, PTO, and relocation support as needed.
- Sponsorship: Unfortunately, we are unable to sponsor new H1B employment visas at this time. However, we can support H1B transfers and OPT.
Logistics- Location: This role is in-person 5 days a week based in San Francisco, California near FiDi.
- Sponsorship: Unfortunately, we are unable to sponsor new H1B employment visas at this time.
BenefitsWe offer the following benefits for our full-time employees:
- Founding-team level equity,
- Medical, Dental, and Vision benefits for you and your family
- Life Insurance benefits
- Retirement Plan (e.g., 401K)
- Monthly stipend to support your wellness and commute
- Daily lunches/dinners and snacks in the office to fuel you
- Generous PTO and sick day policy to rest and recharge
