Senior Full Stack Software Engineer

Lensa is a career site that helps job seekers find great jobs in the US. We are not a staffing firm or agency. Lensa does not hire directly for these jobs, but promotes jobs on LinkedIn on behalf of its direct clients, recruitment ad agencies, and marketing partners. Lensa partners with DirectEmployers to promote this job for MetLife. Clicking "Apply Now" or "Read more" on Lensa redirects you to the job board/employer site. Any information collected there is subject to their terms and privacy notice.

Role Value Proposition

We're looking for a senior engineer who is passionate about engineering, excellence and developer experience. In this role, you will drive org-wide AI adoption, test automation strategy, and DevEx improvements, partnering with product teams to design reusable frameworks, platforms, and best practices that significantly accelerate delivery while improving quality and security.

You will act as a technical leader and hands-on builder-defining standards, building reference implementations, coaching teams, and instrumenting metrics to measure impact.

Key Responsibilities

• Design and deliver AI-assisted development workflows (e.g., code generation, refactoring assistance, knowledge search, test generation) using tools like GitHub Copilot, Azure OpenAI, and M365 Copilot.
• Build AI services and integration patterns (e.g., prompt engineering libraries, retrieval-augmented generation, model evaluation, guardrails, observability).
• Optimize local dev environments and inner loops: fast builds, containerized dev, remote dev environments, golden paths, and templates.
• Build platform tooling: CI/CD pipelines, reusable GitHub Actions/Azure DevOps templates, standardized build/release workflows, and deployment automation.
• Improve repo hygiene: monorepo/multirepo strategy, branch protection, semantic versioning, conventional commits, and automated changelogs.
• Implement observability for DevEx: DORA metrics (lead time, deployment frequency, MTTR, change failure rate), build times, flaky tests, PR cycle time.
• Run productivity experiments and A/B tests (e.g., Copilot on/off, pipeline caching strategies) and scale what works.
• Define and implement test pyramids across unit, integration, contract, and end-to-end layers.
• Build and scale test automation frameworks (e.g., Playwright/Cypress/Selenium, REST API testing, Pact for consumer-driven contracts, performance testing with k6/JMeter).
  
  

Required

Essential Business Experience and Technical Skills:

• 9 years of professional software engineering experience with full-stack development.
• Proven track record in test automation frameworks, CI/CD pipelines, and developer productivity tooling.
• Strong proficiency in front-end (React, Angular, or similar) and back-end (Node.js, Java, .NET, or Python) technologies.
• Expertise in automated testing tools (Playwright, Cypress, Selenium, JUnit, PyTest) and contract testing (Pact).
• Hands-on experience with CI/CD platforms (GitHub Actions, Azure DevOps) and cloud environments (Azure preferred, AWS/GCP acceptable).
• Familiarity with AI-assisted development tools (GitHub Copilot, Azure OpenAI) and prompt engineering concepts.
  
  

Preferred

• Familiarity with DORA metrics and productivity measurement frameworks.
• Exposure to microservices architecture, event-driven systems, and performance testing.
  
  

At MetLife, we're leading the global transformation of an industry we've long defined. United in purpose, diverse in perspective, we're dedicated to making a difference in the lives of our customers.

Equal Employment Opportunity/Disability/Veterans

If you need an accommodation due to a disability, please email us at accommodations@metlife.com. This information will be held in confidence and used only to determine an appropriate accommodation for the application process.

MetLife maintains a drug-free workplace.

If you have questions about this posting, please contact support@lensa.com