Quizlet · 4 hours ago
Principal Engineer – User Identity, Messaging & Trust Infrastructure
San Francisco, CA
Full-time
Onsite
Lead/Staff
$237K/yr - $323K/yr
10+ years expQuizlet is a leading online learning platform dedicated to helping learners achieve their outcomes. They are seeking a Principal Engineer to lead the architecture of identity, messaging, and trust infrastructure, ensuring a secure and intelligent user experience while collaborating with various teams across the organization.
E-LearningEdTechEducationInternetKnowledge Management
Responsibilities
Identity & Access Architecture: Define and evolve our authentication and authorization architecture (e.g., OAuth 2.0, SSO, MFA)
Account Lifecycle Management: Own core services powering sign-up, login, recovery, and settings
Messaging Platform: Architect a scalable, consent-aware system for in-app, push, email and external comms; partner with Braze and marketing teams to drive intelligent engagement
Trust & Safety Systems: Build infrastructure to support abuse detection, content moderation, and policy enforcement
Privacy and Consent Frameworks: Ensure platform-wide compliance with data protection regulations (e.g., COPPA, GDPR, FERPA)
Cross-Org Collaboration: Influence engineering and legal peers on data minimization, secure defaults, and safety practices
Qualification
Required
10+ years of backend/platform engineering experience, with 5+ years in identity, messaging, or trust systems
Experience in modernizing legacy account systems and building privacy-centric user platforms
Significant hands-on experience in security, compliance, and messaging infrastructure (e.g., rate limiting, consent management, opt-in flows)
Hands-on experience with Node.js, Go, Python, or TypeScript
Familiarity with tools like Braze, Segment, or equivalent martech stacks
Passion for building platforms that enable scale, intelligence, and trust
Fluency with platform security, privacy, and system design
Proven ability to lead architectural transformation while shipping continuously
Strength in cross-functional collaboration, especially with legal, marketing, and product
Benefits
20 vacation days that we expect you to take!
Competitive health, dental, and vision insurance (100% employee and 75% dependent PPO, Dental, VSP Choice)
Employer-sponsored 401k plan with company match
Access to LinkedIn Learning and other resources to support professional growth
Paid Family Leave, FSA, HSA, Commuter benefits, and Wellness benefits
40 hours of annual paid time off to participate in volunteer programs of choice
Company
Quizlet
Quizlet is a learning platform that uses activities and games to help students practice and master what they’re learning.
201-500 employees
H1B Sponsorship
Quizlet has a track record of offering H1B sponsorships. Please note that this does not
guarantee sponsorship for this specific role. Below presents additional info for your
reference. (Data Powered by US Department of Labor)
Distribution of Different Job Fields Receiving Sponsorship
Represents job field similar to this job
Trends of Total Sponsorships
2025 (12)
2024 (10)
2023 (7)
2022 (9)
2021 (1)
2020 (8)
Funding
Current Stage
Growth StageTotal Funding
$62MKey Investors
General AtlanticIcon Ventures
2020-05-13Series C· $30M
2018-02-06Series B· $20M
2015-11-23Series A· $12M
Leadership Team
Kurt Beidler
Chief Executive Officer
David Margulius
Board Member and Co-Founder
Recent News
2025-10-31
South Africa Today
2025-09-12
Mark Cuban Foundation
2025-09-09
Company data provided by crunchbase