Sr. Software Engineer, Frontend

Slack - New York, NY

Posted 9 days ago

In this role you'll use your extensive knowledge of JavaScript, HTML, and CSS to improve the Slack web client, a complex web-based application used and loved daily by millions of people around the world. You'll engineer for usability, maintainability, and performance while delighting users by making their working lives simpler, more pleasant, and more productive.
What you will be doing

  • Collaborate with backend and quality engineers to spec, write, test, and deploy code that integrates with real-time data streams and API endpoints

  • Brainstorm features with product managers and designers and guide decisions based on your knowledge of the codebase

  • Assist our skilled Customer Experience team in triaging bugs and solving issues in production

  • Learn about, use, and teach new web technologies

  • Review code and have your code reviewed

  • Mentor and be mentored by other engineers

  • Work multi-functionally with other teams to set and achieve company-wide engineering goals

  • Like the work you do, enjoy collaborating with your coworkers, and go home on time

What you should have

  • 5+ years of practical experience writing client-side JavaScript

  • 1+ years experience with React and Redux, Lodash, and/or CSS preprocessors like LESS or SASS

  • Expertise building responsive layouts with CSS and HTML

  • Experience building and debugging complex systems in both individual and team environments

  • Experience with modern browser technologies

  • Strong UX and design sensibilities and an interest in sweating the small stuff

  • Strong communication and problem-solving skills

  • Self-­awareness, a positive attitude, a sense of humor, and empathy

Bonus points if you have experience with

  • Experience working on consumer facing products

  • WebSockets, Local Storage, or ES6

  • Optimizing the JavaScript performance of large-scale, high-volume systems

  • Accessibility, internationalization, or localization

  • The Git workflow, including pull requests, code reviews, and CI/CD systems

  • Any of the technologies we write about on our blog at

Slack is where work happens. It connects you with the people and apps you work with every day, no matter where you are or what you do. We believe everyone deserves to work in a welcoming, respectful, and empathetic culture. We live by our values and hire accordingly.
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