Visual Designer

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 visual designer to join our design team and 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.

Key Responsibilities

Collaborate with the design team to build cohesive visual systems for RadixArk and SGLang that scale across marketing, events, and community initiatives.

Create visual assets across event branding, booths, signage, swag, decks, blog and social graphics, and campaigns.

Create original illustrations that define and extend the visual identity of RadixArk and SGLang.

Use AI-native workflows (GPT Image, Nano Banana, Claude Code, and whatever comes next) to explore concepts fast and ship production-quality assets.

Qualifications

Every application must include a portfolio or personal website. Applications without one will not be reviewed.

A strong portfolio showing your best work, what you owned, and the thinking behind it.

Proven experience in event and marketing design.

Strong illustration skills with original work for brands, campaigns, or events.

Proficiency in Figma and Adobe Creative Suite; comfortable using AI tools in everyday design work.

Great cross-functional collaboration and communication skills.

Bonus

Experience designing for large-scale events or conferences.

Motion design (After Effects, Rive, Lottie, or similar).

3D design skills (Blender, Cinema 4D, or similar).

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.