# Lead Site Reliability Engineer

**Company**: UnitedMasters
**Location**: San Francisco
**Experience**: senior
**Job type**: full-time
**Salary**: $195,000 - $240,000
**Category**: Engineering
**Industry**: Technology

**Apply**: https://job-boards.greenhouse.io/unitedmasterstranslation/jobs/8895093002?utm_source=yubhub.co&utm_medium=jobs_feed&utm_campaign=apply
**Canonical**: https://yubhub.co/jobs/job_c84d646e-c88

## Description

You'll partner with platform, data, QA, and product engineers across the organization, owning the intersection of reliability and security: the tooling, monitoring, alerting, emergency response, and systems design the whole org depends on.

A defining part of the role is building how we protect our systems going forward. We're investing in agentic, AI-driven security pipelines that continuously detect, triage, and help remediate vulnerabilities across our codebase and infrastructure , and you'll lead the design and stewardship of that capability.

Above all, though, this is a coaching and consulting role. We're looking for a strong listener, patient collaborator, thoughtful architect, and skilled builder , someone who identifies needs in reliability and security and empowers peer developers to improve them.

Responsibilities:

- Partner with platform, data, QA, and product teams to understand their automation, infrastructure, monitoring, and security needs.

- Build tooling and processes that solve the problems those conversations surface.

- Build and maintain an agentic vulnerability detection and mitigation pipeline that will scan, triage, and propose fixes, with human-in-the-loop guardrails.

- Embed security into the development lifecycle, including threat modeling, supply-chain hygiene, secrets management, secure-by-default patterns.

- Lead security and reliability incident response as first-class operational concerns.

- Define company-level SLAs, SLOs, and Error Budgets, and help teams set their own.

- Steer system design toward shared tooling and decisions that ensure reliability, scalability, security, and maintainability.

- Join the on-call rotation as a peer to spot process gaps and coach on response.

- Act as a senior escalation for infrastructure and security issues, helping resolve them while coaching teams to handle the next.

- Own our AWS infrastructure and set the long-term strategy for our reliability and security posture, balancing scalability and cost.

Requirements:

- Senior-to-staff experience as an SRE, platform, or infrastructure engineer, owning production reliability at scale.

- Hands-on application and/or infrastructure security experience; enough to lead the security conversation without a separate security team in the room.

- Practical experience building with LLMs and agentic systems.

- Strong software engineering fundamentals. You build tools and systems, not just configure them.

- A coaching instinct: you measure impact by how much you raise the teams around you.

## Skills

### Required
- SRE
- platform engineering
- infrastructure security
- agentic systems
- LLMs
- software engineering

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Source: [Apply at job-boards.greenhouse.io](https://job-boards.greenhouse.io/unitedmasterstranslation/jobs/8895093002?utm_source=yubhub.co&utm_medium=jobs_feed&utm_campaign=apply)