---
title: 'Talent Operations at RadixArk'
canonical: 'https://feeny.ai/job/talent-operations-radixark-palo-alto-bt6t3qbk45qe'
type: 'job'
last_seen: '2026-09-13'
---

# Talent Operations at RadixArk

- **Company:** RadixArk
- **Location:** Palo Alto, CA
- **Posted:** 2026-08-19
- **Last confirmed live:** 2026-09-13
- **Apply:** https://job-boards.greenhouse.io/radixark/jobs/4375238009

## Job description

## About the Role

We're looking for a hands-on Talent Operations Specialist to build and run the machinery behind talent and people ops as we scale. This isn't a traditional HR generalist role - it's for someone who treats recruiting and people ops like an engineering challenge: we don't just 'use' tools, we build AI-augmented workflows, automate the manual, and engineer our people & talent infrastructure for scale. You'll straddle recruiting ops and people ops, work directly with our existing team, and own the day-to-day execution that keeps our ATS and HRIS infrastructure fast, clean, and scalable. We move fast and put in long hours because we're building the infrastructure for a small team to operate like a much larger one - if that trade-off excites you rather than drains you, you'll fit in here.

## Key Responsibilities

- Own interview coordination end to end: schedule and manage complex, multi-stakeholder interviews across formats and time zones.
- Build AI into coordination and reporting workflows so a small team can run at scale.
- Deliver a white-glove candidate experience as the primary point of contact through the interview process, responsive and clear at every touchpoint.
- Maintain data integrity: own accurate, up-to-date candidate records and workflow tracking in the ATS.
- Develop and maintain project documentation, including workflows, use cases, and standard operating procedures.
- Maintain a recruiting metrics dashboard (volume, conversion, time-in-stage, hiring manager accountability).
- Partner closely with the Head of People & Talent to manage priorities, streamline processes, and offload high-leverage operational tasks.

## Qualifications

- On-site or hybrid presence preferred.
- Experience in talent ops, people ops, management consulting, or other high-intensity operational roles.
- API/MCP experience; comfortable with ATS integrations and automation.
- Experience with recruiting or people technology (Ashby, Rippling, Greenhouse, Workday, GoodTime, Modernloop).
- You've supported or run programs across multiple regions, working through regional differences in compliance, process, and stakeholder needs.
- You write and speak clearly, whether the audience is a hiring manager, a vendor, or leadership.

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

Depending on background, skills, and experience, the expected annual salary range for this position is $118,000 - $200,000 USD + equity.

## 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.

## About RadixArk

## Company Overview
- **One-liner**: RadixArk builds open, large-scale inference and training systems to democratize access to frontier AI infrastructure for the entire AI community.
- **Entity Type**: Private (Seed stage)
- **Headquarters**: San Francisco, California, United States
- **Founded**: 2025
- **Founders**: Ying Sheng (CEO) and Banghua Zhu

## Core Business
- **Primary industry/industries**: AI Infrastructure, Deep-Tech, Open Source Software
- **Target customers**: Individual developers, startups, enterprises, and research labs building and deploying AI systems at scale.
- **Mission or purpose statement**: "Make frontier-level AI infrastructure open and accessible to everyone." [radixark.com](https://radixark.com/)

## Products & Services
- **[SGLang (Inference Engine)](https://radixark.com/)**: An open-source, high-performance serving engine for AI models. It has become a de facto standard, powering trillions of tokens daily for leaders like Google, Microsoft, NVIDIA, and xAI. RadixArk is the primary steward. **Type:** Open-Source Software / Managed Service
- **[Miles (RL Framework)](https://radixark.com/blog/radixark-launches-100m-seed)**: An open-source framework for large-scale reinforcement learning and post-training. Designed for efficiency and stability, it has been adopted for large-scale MoE training. **Type:** Open-Source Software
- **Managed Infrastructure & Tooling**: Built on top of SGLang and Miles, RadixArk offers managed services for the full lifecycle of AI development, from training to inference, for teams developing AI at scale. **Type:** Managed Service / Platform

## Market Standing
- **Valuation/Market Cap**: $400 million post-money valuation (as of May 2026) [cbinsights.com](https://www.cbinsights.com/company/radixark)
- **Key Metric**: $100 million total funding (Seed Round)
- **Notable Investors/Partners**: Accel (lead), Spark Capital (co-lead), NVentures (NVIDIA's venture arm), and participation from Google, Microsoft, and other strategic partners. [radixark.com](https://www.radixark.com/blog/radixark-launches-100m-seed)
- **Growth Signals**: The company has 19 employees as of mid-2026 but has seen a monthly headcount growth of +55.6%. Its open-source projects (SGLang and Miles) are already adopted by industry giants and research labs, indicating massive traction and developer mindshare. [linkedin.com](https://www.linkedin.com/company/radixark)

## Competitive Advantages
- **Open-Source Moat**: Its core products, SGLang and Miles, are open-source community standards with deep adoption. This creates a network effect and developer loyalty that is hard for proprietary competitors to replicate.
- **First-Principles Engineering Culture**: The company treats infrastructure engineering as a core creative discipline, not a support function, leading to deeper system-level innovations.
- **Top-Tier Talent & Backing**: Founded by the creators of SGLang and backed by Accel, Spark Capital, and NVIDIA, giving it immediate credibility, capital, and access to frontier hardware.
- **Clear Mission**: Focusing on making infrastructure "10x cheaper and 10x more accessible" directly addresses a massive pain point for the entire AI ecosystem. [radixark.com](https://www.radixark.com/)

## Strategic Focus
- **Growing SGLang & Miles**: Using the $100M seed to accelerate support for new model architectures, hardware platforms, and community improvements.
- **Building Managed Services**: Developing the managed infrastructure and tooling layer on top of its open-source cores to serve a wider range of customers.
- **Hiring Deeply Technical Talent**: Actively recruiting top-tier engineers for kernels, compilers, training systems, and TPU systems to maintain its engineering edge.
- **Expanding Global Reach**: With a Sales role based in Singapore, the company is signaling an intention to serve the APAC market.

## Why Work Here
- **Impactful Mission**: Employees contribute directly to making frontier AI infrastructure a shared foundation, working on problems that affect the entire AI ecosystem.
- **Engineering-Centric Culture**: The company explicitly states that "infrastructure engineering is not a support function," making it an ideal environment for deep-tech systems engineers who want to solve hard, first-principles problems. [radixark.com](https://www.radixark.com/blog/radixark-launches-100m-seed)
- **Work with Open Source at Scale**: You will be contributing to and stewarding widely-used open-source projects (SGLang, Miles) that power trillions of tokens daily.
- **Strong Backing & Early Stage**: Joining a well-funded seed-stage company with a $400M valuation offers significant upside and the chance to shape the company's culture and direction from an early stage.
- **Location & Hybrid Policy**: The company is headquartered in Palo Alto and San Francisco, California, with most roles listed as in-office. They also have a role in Singapore.
- **Notable Perks**: The company's blog emphasizes a culture of being "focused, humble, fearless, and meticulous," which appeals to mission-driven engineers.

## Sources
1. [RadixArk Official Website](https://radixark.com/)
2. [RadixArk Blog: $100M Seed Announcement](https://www.radixark.com/blog/radixark-launches-100m-seed)
3. [RadixArk Jobs on Greenhouse](https://job-boards.greenhouse.io/radixark)
4. [RadixArk LinkedIn Page](https://www.linkedin.com/company/radixark)
5. [CBInsights Company Profile](https://www.cbinsights.com/company/radixark)

## Other roles at RadixArk

- [Member of Technical Staff — Inference-Multi-Hardware](https://feeny.ai/job/member-of-technical-staff-inference-multi-hardware-radixark-palo-alto-5mtbdk97kyhg) — Palo Alto, CA
- [Member of Technical Staff — Developer Experience](https://feeny.ai/job/member-of-technical-staff-developer-experience-radixark-palo-alto-5a7wr087scr0) — Palo Alto, CA
- [Member of Technical Staff — Developer Technology](https://feeny.ai/job/member-of-technical-staff-developer-technology-radixark-palo-alto-vgg40r7f304a) — Palo Alto, CA
- [Product Marketing Manager](https://feeny.ai/job/product-marketing-manager-radixark-palo-alto-jw9xehpywsd4) — Palo Alto, CA
- [Business Development](https://feeny.ai/job/business-development-radixark-palo-alto-c182fj5brh29) — Palo Alto, CA
- [Member of Technical Staff — Performance](https://feeny.ai/job/member-of-technical-staff-performance-radixark-palo-alto-f19h4n3ewdzv) — Palo Alto, CA
- [Member of Technical Staff — Product](https://feeny.ai/job/member-of-technical-staff-product-radixark-palo-alto-as44m8evvp3v) — Palo Alto, CA
- [Technical Program Manager](https://feeny.ai/job/technical-program-manager-radixark-palo-alto-dttqfvsvp6yv) — Palo Alto, CA
- [Member of Technical Staff — Reliability-CI Infrastructure](https://feeny.ai/job/member-of-technical-staff-reliability-ci-infrastructure-radixark-palo-alto-f6br2hsn8yzs) — Palo Alto, CA
- [Member of Technical Staff — Inference-Kernel, Compiler & Communication](https://feeny.ai/job/member-of-technical-staff-inference-kernel-compiler-communication-radixark-palo-jv0nsh2xseay) — Palo Alto, CA