About The Role
RadixArk is seeking a Recruiting Coordinator to support our hiring efforts as we build a world-class engineering team. You'll coordinate interview scheduling, manage candidate communications, and ensure a seamless experience for candidates joining our infrastructure-focused company. This role is perfect for someone who is highly organized, loves logistics, and wants to help build the team that's democratizing AI infrastructure.
Requirements
2+ years of experience in recruiting coordination, talent operations, or HR support roles
Exceptional organizational skills with ability to manage multiple interview pipelines simultaneously
Strong written and verbal communication skills with attention to detail
Experience with applicant tracking systems (ATS) and scheduling tools
Ability to work in a fast-paced startup environment with shifting priorities
Customer service mindset with focus on candidate experience
Proficiency with Google Workspace, Slack, and calendar management tools
Experience in tech recruiting or familiarity with engineering roles is a plus
Responsibilities
Coordinate interview scheduling across multiple engineering roles and time zones
Manage candidate communications: confirmations, reminders, debriefs, and follow-ups
Ensure exceptional candidate experience throughout the interview process
Maintain accurate records in our ATS and tracking systems
Coordinate travel and logistics for onsite interviews and candidate visits
Support recruiting team with job postings, candidate outreach, and pipeline management
Prepare interview materials and debrief documentation for hiring managers
Track recruiting metrics and maintain dashboards for team visibility
Partner with Office Manager on new hire onboarding logistics
Support recruiting events: meetups, conference recruiting, university outreach
Continuously improve recruiting operations and candidate experience workflows
About RadixArk
RadixArk is an infrastructure-first company built by engineers who've shipped production AI systems at xAI, created SGLang (20K+ GitHub stars, the fastest open LLM serving engine), and developed Miles (our large-scale RL framework). 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. We're backed by well-known investors in the infrastructure field and partner with Google, AWS, and frontier AI labs. Join us in building infrastructure that gives real leverage back to the AI community.
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.
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