Principal Engineer, DevEx

Yahoo
United States of America

About the job

It takes powerful technology to connect our brands and partners with an audience of hundreds of millions of people. Whether you're looking to write mobile app code, engineer the servers behind our massive ad tech stacks, or develop algorithms to help us process trillions of data points a day, what you do here will have a huge impact on our businessand the world.A Little About UsWe are a high-impact team within the CTO organization, dedicated to accelerating outcomes for internal development teams. We own the entire CICD and artifact ecosystem, leading the platform work, automation, governance, and long-term service ownership. Our mission is centered on critical platform modernization and moving to a product-first operating model that emphasizes clear golden paths, measurable Developer Experience (DX) outcomes, and continuous evolution. To achieve this, we champion a high-ownership culture with strong engineering fundamentals (reliability, observability, testing), drive an AIagentic automation strategy to reduce toil at scale, and define governance in partnership with Security to ensure developer velocity.

Responsibilities

Build and operate an agentic migration system to GitHub Actions

Design an agentic AI automation that can translate and migrate pipelines to GitHub Actions workflows

Automate PR creation and iteration

Build safe at scale operations: migration batching, progress tracking, exception queues, rollback strategies, and clear ownership boundaries.

Establish evaluationquality loops for the agent: regression tests, correctness checks, policy checks, and measurable success criteria (not just it looks right).

Establish GitHub Actions governance + the CICD paved road

Define governance for GitHub Actions at enterpriseorg scale

Build and maintain reusable workflows

Define Artifactory best practices and standard integrations

Establish best practices for Artifactory repository structure and operations

Standardize how CI publishes and consumes artifacts with secure defaults and consistent metadata

Maintain conventions that scale (including repository namingconstraints and guardrails)

Runner strategy (GitHub-hosted + self-hosted) and enterprise enablement

Define when to u

Qualifications

Minimum

Practical experience building LLMagentic AI systems where correctness, guardrails, and evaluation matter (not just ad-hoc prompting)

Senior-level experience building production-quality systems, platform tooling, or internal developer platforms

Deep CICD expertise: pipeline design, troubleshooting, reliability improvements, and rolloutmigration planning

Hands-on GitHub Actions experience including reusable workflows and enterpriseorg governance considerations

Experience with artifact repositories and release flows; JFrog Artifactory strongly preferred

Strong written communication for internal docs, templates, and playbooks

Bachelors degree or equivalent work experience

Preferred

Experience migrating at scale between CI systems (GHAJenkinsGitLab CICircleetc.)

Experience building automation that interacts with GitHub at scale (repo scanning, PR bots, policy validators)

Security-minded CICD experience (pinning actions, least-privilege defaults, secrets hygiene, runner boundaries) in partnership with security