Job Application for Designer at RadixArk

About the Role

RadixArk builds the open-source AI infrastructure behind SGLang and Miles, used by developers and enterprises around the world. We're looking for a designer to give our brand a distinct visual voice, led by illustration, and who treats modern AI tools as part of their craft rather than a novelty. Taste and ideas matter to us more than years on a resume, which is why we read portfolios first and care most about the work itself. You'll shape how RadixArk shows up everywhere from our site and decks to the conferences and community events we run. We care about craft and about building things that scale, so the best work here won't just set the quality bar, it'll become systems the whole team can build on. As our platform grows, there's a real path into product, so we want someone with the curiosity and range to grow into a product designer or design engineer over time.

Key Responsibilities

Create original illustrations that define and extend the RadixArk and SGLang visual identity
Build and steward a consistent brand system across every touchpoint
Use AI image tools (GPT Image 2, Nano Banana, and whatever comes next) to go from idea to polished asset quickly
Use Claude Code as a design tool, for example to prototype landing pages and interactive web experiences in code, generate SVG illustrations and icon sets, and build or maintain design-system components and tokens
Collaborate with cross-functional partners across product, GTM, BD, engineering, and community to turn their goals into clear, compelling visuals and materials, both internal and external-facing, including conference and event collateral like slides, signage, booths, swag, and more
Produce a steady stream of visual content for blogs and social
Partner with the team on product and platform polish, with room to grow into a product design role

Qualifications

A strong portfolio is the single most important thing we look at. Show us your best work and the example projects you're proudest of, and tell us what you owned and why you made the choices you did
Every application must include a link to your website or portfolio. Applications without one will not be reviewed.
Real fluency in illustration and brand or visual design, backed by example projects
Comfort folding AI tools into your everyday workflow, including image generation and Claude Code
Bonus: you've built reusable Claude Code skills for branding or design systems, or are excited to, so brand-consistent output scales across the team
Bonus: interest or experience in product design or design engineering
Bonus: you set taste rather than follow trends, and have high agency in a fast-moving, technical, open-source environment

To Apply

Send us your resume and portfolio or personal website (required) along with a short note on a project you're proud of.

About RadixArk

RadixArk is an infrastructure-first company built by engineers who've shipped production AI systems, created SGLang (30K+ GitHub stars, the fastest open LLM serving engine), and developed Miles (our large-scale RL framework). Founded by AI infrastructure veterans from xAI and NVIDIA, we're on a mission to democratize frontier-level AI infrastructure by building world-class open systems for inference and training. Our team has optimized kernels serving billions of tokens daily, designed distributed training systems coordinating 10,000+ GPUs, and contributed to infrastructure that powers leading AI companies and research labs.

Compensation

We offer competitive compensation with equity, comprehensive health benefits, and flexible work arrangements. Compensation is determined by location, level, and experience.

Equal Opportunity

RadixArk is an Equal Opportunity Employer and is proud to offer equal employment opportunity to everyone regardless of race, color, ancestry, religion, sex, national origin, sexual orientation, age, citizenship, marital status, disability, gender identity, veteran status, and more.

Designer