Software Engineer – Partner Platform, APIs & Ecosystem Services

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.

We’re seeking a Staff Software Engineer to lead engineering on Quizlet’s external API platform and Learn

OS plugin architecture. You’ll define integration patterns for partner applications, guide API best practices, and build infrastructure that enables seamless learning workflows across external platforms and AI agents.

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.

• Design and implement APIs powering partner experiences and agentic workflows.
• Develop MCP and agentic services to build the Learn
  
  OS of Quizlet.
• Lead cross-team initiatives to deliver secure, rate-limited, and discoverable APIs.
• Build infrastructure for Quizlet widgets and embedded experiences in LMSs, productivity tools, or creative apps.
• Mentor engineers and influence platform development standards.

• 8+ years of backend or platform engineering experience, with expertise in API or developer platforms.
• Strong track record designing extensible, secure APIs, SDKs, and plugin systems.
• Understanding of agent frameworks like MCP, protocol design, and AI/LLM interoperability.
• Experience building platform abstractions and developer enablement layers.
• Hands-on expertise with containerized services, OAuth2, gRPC/REST, and event-driven systems.
• Fluency with platform security, privacy, and system design.
• Proven ability to lead architectural transformation while shipping continuously.

• 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 $196,320 – $268,100, depending on location and experience, as well as company stock options.
• Collaborate with your manager and team to create a healthy work-life balance
• 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 401(k) plan with company match
• Access to Linked In 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

🌎 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…