Sr. Software Engineer, Full Stack (User Proficiency) - Slack

About Slack

Slack is your Digital HQ – a place where work flows between your people, systems, partners, and customers. From Fortune 100 companies to corner markets, millions of people around the world use Slack to connect their teams, unify their systems, and drive their business forward.

Slack breaks down communication silos inside and beyond your organization by bringing teams and tools together around common goals, projects and processes in channels and in Slack Connect. It removes the limits of physical walls, giving people the flexibility to do their best work where, when and how they prefer with features like huddles and clips. And it empowers everyone to automate common tasks with apps and workflows. In this digital-first era, Slack’s mission is to make people’s work lives simpler, more cheerful, and more productive.

A taste of our scale and reach:

77% of the Fortune 100 use Slack.

150+ countries have daily active users in Slack.

Slack delivers 300k+ messages per second

To date, 1.79 trillion messages have been sent on Slack.

2.65 Billion actions are taken in Slack each day

Slack has 200k+ paid customers.

About the team

We're looking for individuals who are passionate about crafting extraordinary web applications!

As a Full Stack Engineer, you’ll use your extensive knowledge of JavaScript, HTML, CSS, as well as Hack on the backend to improve the Slack web client, a complex in-browser application relied upon by millions of users every day. You will work with real-time data streams, engineer for performance across browsers, and delight people by making the best software we can conceptualize. You will collaborate closely with Product, Design, Application Engineering, and QA to spec, conceptualize, build, test, and deploy new features for our large (and growing!) user base.

We’re currently hiring different levels of Full Stack Engineers across pillars such as Expansion and Line of Business.

What you will be doing

• Brainstorm with Product Managers and Designers to conceptualize new features.

• Collaborate with Application Engineering to build new features for our large-and-growing user base.

• Learn about new web technologies and discuss potential solutions to problems.

• Help our skilled support team triage bugs and take on production issues.

• Mentor other engineers and deeply review code.

What you should have

• 4+ years of experience writing client-side JavaScript and React Framework.

• 4+ years of experience writing back-end code and APIs.

• Expertise in building complex layouts with CSS and HTML.

• Experience building and debugging sophisticated systems in a team environment.

• Experience debugging, building, and interacting with databases.

• Experience with modern browser technologies.

• Strong UX and design sensibilities, and a desire to sweat the small stuff.

• Strong communication skills, a positive attitude, and empathy.

• Self-awareness and a desire to continually improve.

Bonus Points

• Experience with Typescript.

• Experience with WebRTC.

• Experience investigating and improving JavaScript performance.

• Experience with Web Sockets, Local Storage, or ES6.

• Experience in small startup environments.

• Experience designing websites or applications.

Slack has a positive, diverse, and supportive culture—we look for people who are curious, inventive, and work to be a little better every single day. In our work together, we aim to be smart, humble, hardworking, and, above all, collaborative. If this sounds like a good fit for you, why not apply?!