Sr. Software Engineer, Frontend - Experimentation & Data Visualization

Every single day, our colleagues at Slack make thousands of decisions: whether to launch a feature, which API endpoint to optimize for, or which marketing campaign to invest in. Data, if curated well, can help inform these decisions, and running A/B tests is a crucial way for us to acquire such data.

We are seeking an experienced engineer for our experimentation platform who will work with key technical folks across Slack to execute and build on the vision for the Experimentations framework. They will partner with stakeholders across various pillars to drive adoption throughout the company, and bringing the platform to the next level. If you are excited about leveraging data to make better decisions, we would love to hear from you.

What you will be doing:

  • Participate in technical discussions, co-own technical solutions for the experimentation platform; describe, analyze, and convince others about major technical tradeoffs.
  • Initiate and facilitate meaningful discussions (technical or otherwise) with other engineers, analysts, and product managers around complex issues in A/B testing.
  • Serve as a data advocate at Slack: answer experiment-related questions, give talks, etc.  
  • Be execution focused to deliver on the next generation of the experiments platform 

What you should have:

  • 5+ years of experience building web applications professionally 
  • You can lead technical architecture discussions and help drive technical decisions
  • You have a good understanding of basic probabilities
  • You are product-focused and care about the end-user experience
  • You can jump into situations with few guardrails and make things better
  • Experience with Java, PHP, Hack, React and knowledge of other JavaScript frameworks is a plus
  • You are someone who others enjoy working with due to your technical competence and positive attitude
  • You have a bachelor's degree in Computer Science, Engineering or a related field, or equivalent training, fellowship, or work experience

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 say hello?

Slack is an Equal Opportunity Employer and participant in the U.S. Federal E-Verify program. Women, minorities, individuals with disabilities and protected veterans are encouraged to apply. Slack will consider qualified applicants with criminal histories in a manner consistent with the San Francisco Fair Chance Ordinance. 

Slack is a layer of the business technology stack that brings together people, data, and applications – a single place where people can effectively work together, find important information, and access hundreds of thousands of critical applications and services to do their best work. From global Fortune 100 companies to corner markets, businesses and teams of all kinds use Slack to bring the right people together with all the right information. Slack is headquartered in San Francisco, CA and has ten offices around the world. For more information on how Slack makes teams better connected, visit

Ensuring a diverse and inclusive workplace where we learn from each other is core to Slack’s values. We welcome people of different backgrounds, experiences, abilities and perspectives. We are an equal opportunity employer and a pleasant and supportive place to work.

Come do the best work of your life here at Slack.