Founding Design Engineer

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

About Us:

We're on a mission to make subscriber churn a solved problem. Backed by a16z Speedrun, we build AI agents that help consumer subscription brands - like Higgsfield and Promova - retain more users, extend lifetime value, and grow fast. We're an incredibly driven team working on a problem that affects every consumer on the planet. If that sounds like your kind of thing, we'd love to meet you.

Our co-founders are Azamat Khamidov and Benazir Toleubekova. Azamat built a Telegram AI product from zero to five million users in four months, the first acquisition inside Telegram. Benazir received a full scholarship to Beijing University of Technology at 15. Joined Taobao at 17. At Alibaba, architected the core recommendation engine serving 500M daily users.

What You'll Do:

This is the first design hire at Sirius, and we're looking for an engineer first - someone who ships production UI themselves and treats design as their specialty within that, not a separate discipline handed off to someone else. You'll set the visual and interaction language for everything we build, and then you'll write the TypeScript that makes it real. You'll be working on a product that touches real revenue for real companies, which means your decisions matter in ways you'll be able to see and measure.

• Design and build product surfaces end to end - from Figma prototype to shipped, production-ready UI in our codebase
• Build and own the design system in code - components, tokens, and the frontend architecture that keeps it consistent as we scale
• Work daily in Claude Code and TypeScript to prototype and ship production-ready UI - you're not handing off to an engineer, you're often the one shipping it
• Partner with founders on product direction, bringing a designer's perspective to strategy early - not just execution
• Move fast enough to keep pace with a small team, but carefully enough that the quality standard stays high

What You'll Bring:

• 3+ years of product design experience - enough that you've shipped something real and learned from what didn't land
• Figma fluency: components, variables, auto-layout, prototyping
• Working proficiency in TypeScript and modern frontend frameworks - you can take a design from prototype to shipped UI yourself
• Strong programming skills and Strong UI/UX design experience
• BS/MS degree in Computer Science, or equivalent hands-on experience
• Based in San Francisco or able to be here full-time. We're not offering visa sponsorship at this time.

Our Values:

Stewardship: We build for the long term. Every customer, partner, and teammate gets that same commitment from day one.

Trust: Earned through the integrity of our technology, the consistency of our commitments, and the honesty of our communication.

Customer Obsession: We win when our customers win. Every choice and conversation orbits around what makes them stronger.

Excellence: The same standard for the product we ship, the service we give, and the team we build. The bar is the bar.

Family: A constellation, not a single star. We back each other on hard days, celebrate the great ones, and protect the time teammates need to be parents, partners, and humans first.

Life at Sirius:

In‑person, in San Francisco: We work side by side, on‑site in San Francisco. Proximity helps us move faster, solve harder problems, and build something we're proud of together. Note: we're not able to offer visa sponsorship at this time.

Flexible healthcare: We offer flexible spending to direct your benefits toward what matters most to you and your family.

Own what you build: We're building something real, and we want you to own it.

Lunch, coffee & snacks: Daily lunch, plus coffee, tea, and snacks to keep you going.

Time off that's actually off: Take the time you need to show up as your best self. We mean it.

Company Events: We work hard and celebrate our wins.

Compensation Range: $120K - $160K