Founding Software Engineer

San Franciscofull time

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On Site

$125k–$300k

H1B: no

Hypercubic Founding Software Engineer at Hypercubic will design, prototype, and productionize AI-powered systems for legacy application modernization. This role involves ownership over architecture, product direction, and engineering culture.

Responsibilities

We’re looking for a true generalized specialist with unusually strong technical and product 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 product UX.
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 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.

Qualification

Strong technical and product tasteStrong testing intuitionLocation

Required

Strong technical and product taste
Comfortable operating across abstraction layers from low-level system reasoning to high-level product UX
Bias for action and track record of working in fast-paced environments

Preferred

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.
Location: This role is in-person based in San Francisco, California.

Benefits

Dental
Vision
PTO

Company

Hypercubic

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Source: ashby

Active within the past hour

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Must-Have Skills for This Role

AITDDproperty-based testingCOBOLmainframescompilers

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Founding Software Engineer at Hypercubic · LumiJobs