Founding Design Engineer — Ship Production UI & System

BITKRAFT Ventures; San Francisco (CA); On-site; USD 120,000 - 160,000; Full time

Benefits offered by this job

On-site in SF

Flexible healthcare

Own what you build

Lunch & snacks

Time off

Company events

Job summary

Sirius is hiring the first design‑driven engineer to ship production UI and define our visual language. You’ll write TypeScript, patrol the design system, and own frontend surfaces from prototype to production in a small, revenue‑bearing product team.

You’ll collaborate with founders on strategy, turn design into code, and ship fast while maintaining high quality. This is on-site in San Francisco with competitive compensation and health benefits.

Qualifications

• 3+ years of product design experience.
• Figma fluency and prototyping skills.
• Proficient in TypeScript and modern frontend frameworks.
• Strong UI/UX design experience across product surfaces.
• BS/MS degree in Computer Science or equivalent.
• Based in San Francisco or able to be here full-time; no visa sponsorship.

Responsibilities

• Design and ship product surfaces end to end from prototype to production UI.
• Build and own the design system in code with components and tokens.
• Write production-ready UI in TypeScript; ship without handoffs.
• Collaborate with founders on product direction and strategy.
• Move fast in a small team while maintaining high quality.

Skills

3+ years product design

Figma fluency

TypeScript proficiency

Strong UI/UX design

Based in SF

Education

BS/MS in Computer Science

Tools

TypeScript

Frontend frameworks

Job description

Sirius is hiring the first design‑driven engineer to ship production UI and define our visual language. You’ll write TypeScript, patrol the design system, and own frontend surfaces from prototype to production in a small, revenue‑bearing product team.

You’ll collaborate with founders on strategy, turn design into code, and ship fast while maintaining high quality. This is on-site in San Francisco with competitive compensation and health benefits.