Senior Software Development Engineer in Test (SDET) - Autofill Coverage

Overview

Senior SDET on Bitwarden's Autofill Coverage team, responsible for making autofill reliable across real-world websites and keeping it fast and unobtrusive. This is a hands-on role writing, reviewing and shipping code.

What you'll do

• Build and maintain browser automation that checks autofill across popular real-world websites and purpose-built test pages, keeping suites stable as sites change.
• Run, extend and maintain lab-based benchmarks that measure how autofill affects page responsiveness, rendering and memory in the browser.
• Make sure test and benchmark results can be relied on: confirm two runs did the same work before comparing them and flag misleading metrics.
• Build and maintain test pages recreating tricky real-world patterns such as dynamic forms, shadow DOM and iframes.
• Reproduce autofill failures found by automation, support or internal reports, document them clearly, hand dataset fixes to teammates and route the rest to the right owner.
• Publish results to dashboards, set up alerting on regressions, and report coverage and trends on a regular cadence.
• Use AI coding assistants effectively in daily engineering and help keep test documentation and Claude skills current.
• Pair with senior engineers on hard problems, share learnings and review teammates' pull requests with care.
• Work closely with Software Engineer teammates, the Autofill team, Product and Security on triage, test strategy and release coordination.

What you'll need

• 4–8 years in test automation, SDET or software engineering roles.
• Hands-on UI automation of web applications.
• Exposure to front-end performance testing.
• UI automation with Playwright, Cypress, Selenium/WebDriver or Puppeteer, including stable locators, waits and handling flaky tests.
• JavaScript or TypeScript, and Node.js.
• HTML, the DOM and CSS selectors.
• Front-end performance testing with the Chrome DevTools Performance panel, Lighthouse, WebPageTest or Core Web Vitals tooling.
• CI/CD with GitHub Actions, Jenkins or similar, and running tests in Docker.
• Interpreting performance results: percentiles, variance and comparing runs fairly.
• Dashboards and alerting with Datadog, Grafana, New Relic or similar.
• Data or API validation with JSON Schema, Postman or similar.
• AI-assisted development, preferably Claude Code.
• Practical experience with containerized environments, automated test frameworks (unit, integration and end-to-end), CI/CD pipelines and observability tooling.
• Familiarity with secure coding practices and care in handling test credentials and sensitive data.

Nice to have

• Experience with load-testing tools such as JMeter or k6.
• Familiarity with Chrome DevTools Protocol and browser Performance APIs (PerformanceObserver, Long Tasks, User Timing).
• Familiarity with browser extensions and how they are tested (Manifest V3).
• Shell scripting.
• Interest in how security shapes product decisions in a zero-knowledge product.
• Excitement for open source, developer advocacy and building a more secure internet.

Details

• Location: Noida, India.