Senior Software Engineer - Frontend Developer Experience

Responsibilities

• Strengthen the frontend foundations every Mercury engineer builds on.
• Evolve our React, TypeScript, and Vite infrastructure to support teams in shipping ambitious product work with speed and confidence.
• Help engineers move efficiently with automation. Use static analysis, local tools, and LLM coding tools to help engineers quickly resolve issues.
• Optimize our testing platform for fast feedback loops and high confidence. From unit tests to visual snapshots, you’ll provide the QA tools product teams need to move both quickly and safely.
• Make our CI/CD pipelines stable, ergonomic, and fast. Mercury ships fast— dozens of deploys to prod per day, and hundreds more commits on PR branches. You’ll keep the pipeline humming so Mercury’s engineers stay in flow and customers see fixes faster.
• Drive decisions by unifying technical metrics from our tools with sentiment metrics from developer surveys. When data doesn’t exist yet, you’ll build the observability that lets the team move with confidence.
• Foster enthusiasm about frontend work at Mercury by making the good path the easy path, and by representing our work in larger venues.

Requirements

• Has 6-8+ years of software development experience, with a strong focus on the frontend and deep experience with React and Typescript.
• Experience leading complex engineering projects, such as projects that cut across multiple teams and functions, have multi-stage rollouts, or require research and consensus-building before action.
• A confident communicator, adept at communicating across organization boundaries, and driving discussions to productive ends.
• Maintains internal libraries or platform tooling that other engineers depend on.
• Prioritizes being helpful, taking initiative to make other developers' lives easier.
• A thorough understanding of modern frontend developer tooling and workflows, including build systems, CI/CD, web hosting, and testing.
• Dives into the gnarly side of the web platform— when it matters, happy to dig into Vite internals, upstream a fix, or bring a broken deploy pipeline back to life.
• Balances practicality with ideals, pushing the team to reach an ambitious North Star while charting a course there that matches our reality.

Qualifications

• The ideal candidate is a member of our diverse and inclusive team, committed to fostering a culture of respect, empathy, and collaboration.

Skills

• Strong problem-solving skills and a passion for building robust, scalable, and maintainable frontend applications.
• Experience with version control systems like Git.
• Knowledge of web technologies such as HTML, CSS, JavaScript, and frameworks/libraries like React, Vue.js, or Angular.
• Experience with modern frontend development tools and best practices.
• Ability to work effectively in a fast-paced, agile environment.

Benefits

• Competitive total rewards package including base salary, equity (stock options), and benefits.
• Flexible work arrangements to support a healthy work-life balance.
• Professional development opportunities and access to cutting-edge technology.
• Health, dental, and vision insurance plans.
• Retirement savings plan with employer contributions.
• Employee assistance program for mental health support.
• Generous paid time off and holidays.

Pay

• US employees (any location): $200,700 - 250,900
• Canadian employees (any location): CAD $189,700 - 237,100

Schedule

• Full-time position.