Senior Site Reliability Engineer – Platform

About Quizlet :

At Quizlet, our mission is to help every learner achieve their outcomes in the most effective and delightful way. Our $1B+ learning platform serves tens of millions of students every month, including two-thirds of U.S. high schoolers and half of U.S. college students, powering over 2 billion learning interactions monthly.

We blend cognitive science with machine learning to personalize and enhance the learning experience for students, professionals, and lifelong learners alike. We’re energized by the potential to power more learners through multiple approaches and various tools.

Let’s Build the Future of Learning

Join us to design and deliver AI-powered learning tools that scale across the world and unlock human potential.

As a Senior Site Reliability Engineer , you’ll design and build the automation, observability, and systems architecture that enable Quizlet to scale reliably for the next generation of AI-powered learning. You’ll engineer software, tools, and processes that improve service performance, reduce operational toil, and ensure our platform meets strict SLOs for global learners.

We’re happy to share that this is an onsite position in our San Francisco office. To help foster team collaboration, we require that employees be in the office a minimum of three days per week : Monday, Wednesday, and Thursday , and as needed by your manager or the company.

In this role, you will

• Develop and maintain automation and tooling that ensures 99.95  % uptime under peak load.
• Build self-healing and auto-remediation systems for our Kubernetes clusters (GKE) and service mesh (Istio).
• Optimize our CI / CD toolchain (GitHub Actions, CircleCI, ArgoCD) to improve deployment velocity and reliability.
• Design and deploy deep observability and diagnostics in Datadog, leading post-incident reviews with Jeli.
• Conduct capacity planning and performance tuning across databases (Spanner, PlanetScale, BigQuery).
• Collaborate with product engineering to define SLOs and ensure new services are resilient by design.

What you bring to the table

Compensation, Benefits & Perks

Why Join Quizlet?

🌎 Massive reach : 60M+ users, 1B+ interactions per week

🧠 Cutting‑edge tech : Generative AI, adaptive learning, cognitive science

📈 Strong momentum : Top‑tier investors, sustainable business, real traction

🎯 Mission‑first : Work that makes a difference in people’s lives

🤝 Inclusive culture : Committed to equity, diversity, and belonging

We strive to make everyone feel comfortable and welcome!

We work to create a holistic interview process, where both Quizlet and candidates have an opportunity to view what it would be like to work together, in exploring a mutually beneficial partnership.

We provide a transparent setting that gives a comprehensive view of who we are!

In Closing :

At Quizlet, we’re excited about passionate people joining our team—even if you don’t check every box on the requirements list. We value unique perspectives and believe everyone has something meaningful to contribute. Our culture is all about taking initiative, learning through challenges, and striving for high‑quality work while staying curious and open to new ideas. We believe in honest, respectful communication, thoughtful collaboration, and creating a supportive space where everyone can grow and succeed together.

Quizlet’s success as an online learning community depends on a strong commitment to diversity, equity, and inclusion.

As an equal opportunity employer and a tech company committed to societal change, we welcome applicants from all backgrounds. Women, people of color, members of the LGBTQ+ community, individuals with disabilities, and veterans are strongly encouraged to apply. Come join us!

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