RadixArk develops open-source and commercial tools that accelerate the inference and continual optimization of large AI models.
<p> </p> <div class="framer-nmjpis"> <div class="framer-1eby8y6" data-framer-name="Job title" data-framer-component-type="RichTextContainer"> <h3 class="framer-text framer-styles-preset-gjn94e" data-styles-preset="KbAUpl97U">About The Role</h3> </div> <div class="framer-as7117" data-framer-name="Summary" data-framer-component-type="RichTextContainer"> <p class="framer-text framer-styles-preset-1g5o4kb" data-styles-preset="SKu_rKZqD">RadixArk is launching a full-time, paid, 1-year residency program for aspiring AI infrastructure engineers. You'll rotate across inference, training, kernels, compilers, and cluster infrastructure, working on real production systems alongside senior engineers. This is an opportunity to learn from the team behind SGLang and Miles while owning meaningful projects that impact thousands of developers.</p> </div> </div> <div class="framer-g3ip7c"> <div class="framer-8ko91k" data-framer-name="Job title" data-framer-component-type="RichTextContainer"> <h3 class="framer-text framer-styles-preset-gjn94e" data-styles-preset="KbAUpl97U">Requirements</h3> </div> <div class="framer-yai085" data-framer-name="Requirements" data-framer-component-type="RichTextContainer"> <ul class="framer-text"> <li class="framer-text framer-styles-preset-1g5o4kb" data-preset-tag="p"> <p class="framer-text framer-styles-preset-1g5o4kb">Bachelor's or Master's degree in Computer Science, Engineering, or related field (recent graduates welcome)</p> </li> <li class="framer-text framer-styles-preset-1g5o4kb" data-preset-tag="p"> <p class="framer-text framer-styles-preset-1g5o4kb">Strong foundations in systems programming, ML systems, or high-performance computing</p> </li> <li class="framer-text framer-styles-preset-1g5o4kb" data-preset-tag="p"> <p class="framer-text framer-styles-preset-1g5o4kb">Experience with Python and/or C++; exposure to CUDA, JAX, or distributed systems is a plus</p> </li> <li class="framer-text framer-styles-preset-1g5o4kb" data-preset-tag="p"> <p class="framer-text framer-styles-preset-1g5o4kb">Demonstrated ability to learn quickly and debug complex technical problems</p> </li> <li class="framer-text framer-styles-preset-1g5o4kb" data-preset-tag="p"> <p class="framer-text framer-styles-preset-1g5o4kb">Curiosity, grit, and willingness to dive deep into unfamiliar layers of the stack</p> </li> <li class="framer-text framer-styles-preset-1g5o4kb" data-preset-tag="p"> <p class="framer-text framer-styles-preset-1g5o4kb">Desire to grow into a world-class AI infrastructure engineer</p> </li> <li class="framer-text framer-styles-preset-1g5o4kb" data-preset-tag="p"> <p class="framer-text framer-styles-preset-1g5o4kb">Strong communication skills and ability to work collaboratively</p> </li> </ul> </div> </div> <div class="framer-svx6kq"> <div class="framer-1uoatoj" data-framer-name="Job title" data-framer-component-type="RichTextContainer"> <h3 class="framer-text framer-styles-preset-gjn94e" data-styles-preset="KbAUpl97U">Responsibilities</h3> </div> <div class="framer-y4b58j" data-framer-name="Responsibilities" data-framer-component-type="RichTextContainer"> <ul class="framer-text"> <li class="framer-text framer-styles-preset-1g5o4kb" data-preset-tag="p"> <p class="framer-text framer-styles-preset-1g5o4kb">Join a full-time, paid, 1-year residency focused on AI infrastructure</p> </li> <li class="framer-text framer-styles-preset-1g5o4kb" data-preset-tag="p"> <p class="framer-text framer-styles-preset-1g5o4kb">Rotate across inference, training, kernels, compilers, and cluster infrastructure</p> </li> <li class="framer-text framer-styles-preset-1g5o4kb" data-preset-tag="p"> <p class="framer-text framer-styles-preset-1g5o4kb">Work on real production systems: LLM serving (SGLang), diffusion inference (Flux, Wan), RL training (Miles), schedulers, and performance tooling</p> </li> <li class="framer-text framer-styles-preset-1g5o4kb" data-preset-tag="p"> <p class="framer-text framer-styles-preset-1g5o4kb">Learn to debug failures across the full stack: model → runtime → kernel → hardware</p> </li> <li class="framer-text framer-styles-preset-1g5o4kb" data-preset-tag="p"> <p class="framer-text framer-styles-preset-1g5o4kb">Own meaningful projects with close mentorship from senior engineers</p> </li> <li class="framer-text framer-styles-preset-1g5o4kb" data-preset-tag="p"> <p class="framer-text framer-styles-preset-1g5o4kb">Contribute to SGLang, Miles, and other open-source projects</p> </li> <li class="framer-text framer-styles-preset-1g5o4kb" data-preset-tag="p"> <p class="framer-text framer-styles-preset-1g5o4kb">Document learnings and create guides for the community</p> </li> <li class="framer-text framer-styles-preset-1g5o4kb" data-preset-tag="p"> <p class="framer-text framer-styles-preset-1g5o4kb">Present technical deep-dives and share knowledge with the team</p> </li> <li class="framer-text framer-styles-preset-1g5o4kb" data-preset-tag="p"> <p class="framer-text framer-styles-preset-1g5o4kb">Participate in code reviews and learn engineering best practices</p> </li> </ul> </div> </div> <div class="framer-1vu7ugc"> <div class="framer-173q4gz" data-framer-name="Job title" data-framer-component-type="RichTextContainer"> <h3> </h3> <h3>About RadixArk</h3> <p>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.</p> <h3>Compensation</h3> <p>We offer competitive compensation with equity, comprehensive health benefi