Founding Engineer Infra/Backend - Spur

Overview: Spur is every company’s AI QA Engineer.

Spur lets you test your website with natural language. Our AI agents act like real users—automating end-to-end testing without requiring traditional QA infrastructure.

Spur is founded by 2 Yale Alums, and is backed by leading investors like First Round Capital, Neo, Pear VC, Conviction, and YCombinator. We are transforming the testing world, completely re-imagining what testing means from first principles. We're already accelerating engineering teams at some of the fastest-growing companies in the world.

Read our Manifesto:

The Role

As our founding infra/backend engineer, you’ll architect the backbone of Spur’s core platform—define, build, and scale mission-critical infra powering our web agents.

We own our entire stack end-to-end—you’ll orchestrate fleets of browsers and web agents in the cloud and optimize them at massive scale. You’ll work directly with the founders, solving frontier infra problems with real customer impact, and set the gold standard across our stack, from low-level infra to the UX delivered by our agents.

What you’ll do

• Build and scale our core infra to run and launch thousands of browser and web agents every day.

• Design, implement and maintain our clusters, CI/CD, observability, and CI/CD practices

• Rapidly iterate with product, engineering, and founders

Bonus Points

• Experience with distributed task queues, performance/scalability optimization

• Have worked driving impact at smaller teams and scaling infrastructure 0-1

You’ll Thrive Here If You

• Have 5+ years designing, shipping, and operating at-scale infra

• Have deep expertise in Docker, Kubernetes, Terraform, CI/CD, Terraform

• Understand how infrastructure decisions directly impact product performance and customer experience

• Have high autonomy, and are able to drive projects on your own.

• Are ambitious and driven, and care a lot about doing great work with great people

This is an in person role at our office in NYC. We’re an early stage company which means that the role requires working hard and moving quickly. Please only apply if that excites you.

Benefits at Spur

• Daily lunch, snacks, and more are available everyday in the office (you help choose)!

• High quality medical, dental, and vision coverage options, flexible depending on your needs.

• Unlimited PTO (We believe that recharging is essential to being the best that you can be.)

• Spur Swag

Spur is an Equal Opportunity Employer committed to diversity and inclusion in the workplace. All qualified applicants will receive consideration for employment without regard to sex, race, color, age, national origin, religion, physical and mental disability, genetic information, marital status, sexual orientation, gender identity/assignment, citizenship, pregnancy or maternity, protected veteran status, or any other status prohibited by applicable national, federal, state or local law.