Senior CI Infrastructure Architect for Open-Source ML

RadixArk; Palo Alto (CA); Presencial; USD 180.000 - 240.000; Jornada completa

Descripción de la vacante

RadixArk is seeking a Member of Technical Staff - CI / Infrastructure to own and architect the CI system that powers SGLang. You will replace brittle thresholds with regression-based detection, harden runners against fork PRs, and cut cycle times so contributors get feedback in minutes.

This role emphasizes designing CI infrastructure as a system you treat with the same care as serving infrastructure, collaborating with core maintainers and hardware partners to keep the gating process fast,

Formación

• 3+ years operating CI/CD at scale.
• Deep Linux, Docker, GPU computing knowledge.
• Self-hosted runner management experience.
• Strong Bash and Python.
• Security mindset - CI supply chain risks, fork PR attack vectors, runner hardening.
• NVIDIA GPU drivers, CUDA, NCCL, InfiniBand/RDMA experience in CI contexts.
• Familiarity with ML inference workloads (model loading, KV cache, quantization).

Responsabilidades

• Own CI reliability end-to-end - triage failures, distinguish real regressions from flaky tests and infra issues, keep main green.
• Build regression-based CI - replace hardcoded static thresholds with automated baseline comparison (metrics pipeline, durable storage, detection logic).
• Harden runner infrastructure - ephemer...
• Cut CI time - right-size eval suites, deduplicate server startups, separate PR smoke tests from nightly full runs.
• Improve developer experience - faster feedback, clearer failure messages, workflow orchestration.

Conocimientos

CI/CD at scale

Linux

Bash

Python

Security mindset

Self-hosted runner management

GPU computing basics

Herramientas

GitHub Actions

Buildkite

Jenkins

GitLab CI

Docker

CUDA

NCCL

InfiniBand/RDMA

Descripción del empleo

RadixArk is seeking a Member of Technical Staff - CI / Infrastructure to own and architect the CI system that powers SGLang. You will replace brittle thresholds with regression-based detection, harden runners against fork PRs, and cut cycle times so contributors get feedback in minutes.

This role emphasizes designing CI infrastructure as a system you treat with the same care as serving infrastructure, collaborating with core maintainers and hardware partners to keep the gating process fast,