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.

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

As a Backend Software Engineer, you will work on critical infrastructure powering identity, account management, and trust & safety systems that serve millions of learners. You’ll collaborate with experienced engineers and product managers to improve our secure sign-up and 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 this environment facilitates better teamwork, growth, and connection.

• 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.
• Collaborate with teammates to ensure compliance through consent flows and data handling.
• Participate in design and code reviews, continuously improving code quality and reliability.

• 2+ years of backend or platform engineering experience.
• Proficiency in Node.js, Go, Python, or Type Script.
• Interest in identity systems, security, and privacy-first design.
• Understanding of distributed systems and modern service architecture.
• A collaborative spirit and curiosity to learn from peers.

Quizlet is an equal opportunity employer. We celebrate diversity and are committed to creating an inclusive environment for all employees. Salary transparency helps to mitigate unfair hiring practices when it comes to discrimination and pay gaps.

Total compensation for this role is market competitive, including a starting base salary of $163,900 - $190,800
, depending on location and experience, as well as company stock options.

• Collaborate with your manager and team to create a healthy work-life balance.
• Take 20 vacation days per year.
• Access to competitive health, dental, and vision insurance.
• Employer-sponsored 401(k) plan with company match.
• Access to Linked In Learning and other resources for professional growth.
• Paid Family Leave, FSA, HSA, Commuter benefits, and Wellness benefits.
• 40 hours of annual paid time off for volunteer programs.

🌎 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!

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…