DevOps Engineer, Site Reliability Engineering (SRE) Job at LMArena, San Francisco, CA

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  • LMArena
  • San Francisco, CA

Job Description

Position Overview

We are seeking an experienced, security-minded Site Reliability Engineer to own and elevate our infrastructure, processes, and operational security. You will:

  • Take end-to-end ownership of infrastructure operations across Cloudflare, Vercel, and our CI/CD pipelines.

  • Embed security best practices into every layer of the stack, ensuring resilience against emerging threats.

  • Establish processes and procedures that promote efficient onboarding and ramping up new team members, and mentor incoming and more junior members of the team.

This role is ideal for a seasoned SRE who thrives at the intersection of reliability, performance, and security, and who brings the rigor needed to keep fast-moving product teams focused on innovation.

Key Responsibilities
  • Infrastructure as Code Manage Terraform modules and secrets pipelines; champion immutable, auditable infrastructure.

  • Cloudflare Operations Configure, monitor, and harden WAF, DDoS protections, bot management, and CDN caching strategies.

  • Vercel & Edge Runtime Own deployment architecture, performance tuning, and incident response for our Next.js-based front end and Edge Functions.

  • CI/CD & Release Engineering Design, implement, and maintain secure pipelines (GitHub Actions, Vercel integrations) with automated testing and vulnerability scanning.

  • Change Management & Documentation Establish and enforce a lightweight but disciplined RFC/change-control process; maintain comprehensive runbooks and architecture diagrams.

  • Observability & Incident Response Expand monitoring, logging, and alerting; lead post-incident reviews and drive continual improvement.

  • Mentorship Provide day-to-day guidance to engineers and junior SREs, fostering a culture of ownership and learning.

  • Compliance Support Partner with ProdSec and GRC teams on SOC 2, ISO 27001, and customer security questionnaires.

  • Manage and maintain internal and external facing infrastructure

  • Maintain and configure log aggregation requirements, and the infrastructure used to store them across the business

Required Qualifications
  • 7+ years in SRE/DevOps roles for high-traffic SaaS or consumer web products.

  • Proven expertise securing and scaling Cloudflare and Vercel (or comparable CDN/edge and serverless platforms).

  • Deep understanding of web application security, networking, TLS, and zero-trust principles.

  • Strong proficiency with infrastructure as code (Terraform, Pulumi, or similar), and serverless build pipelines (GitHub Actions or similar)

  • Strong programming abilities (Golang, Python, TypeScript) and scripting

  • Demonstrated success designing and enforcing change-management workflows.

  • Excellent written communicationable to produce clear runbooks and architecture docs.

  • Track record mentoring or leading junior engineers.

Nice-to-Have
  • Experience with container orchestration (Kubernetes or Nomad).

  • Experience with serverless stacks.

  • Certifications such as AWS/GCP Professional, GIAC-GCSA, CKS, or CISSP.

Why You'll Love Working Here
  • Impact You'll set the foundation for reliability and security across a rapidly growing AI benchmarking platform.

  • Culture Engineering-first, documentation-driven, and community-obsessed.

  • Compensation Competitive salary, meaningful equity, comprehensive benefits, and professional-development budget.

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