Sr. Staff Software Engineer – User Identity, Messaging & Trust Infrastructure

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.

About the Role

As a Senior Software Engineer, you will work on critical infrastructure powering identity, account management, and trust and safety systems that serve millions of learners. You'll partner with experienced engineers and product managers to improve our secure sign-up / login flows, support compliant messaging, and implement scalable systems for user protection and privacy.

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. We believe that this working environment facilitates increased work efficiency, team partnership, and supports growth as an employee and organization.

In this role, you will :

• Build and maintain secure authentication and account services (OAuth2, MFA, SSO)
• Help scale our user messaging platform, integrating systems like Braze
• Implement features that support moderation, privacy requests, and abuse detection
• Ensure regulatory compliance through thoughtful consent flows and data handling

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!

To All Recruiters and Placement Agencies

At this time, Quizlet does not accept unsolicited agency resumes and / or profiles.

Please do not forward unsolicited agency resumes to our website or to any Quizlet employee. Quizlet will not pay fees to any third‑party agency or firm nor will it be responsible for any agency fees associated with unsolicited resumes. All unsolicited resumes received will be considered the property of Quizlet.

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