Fullstack Engineer

Quizlet • Full-time • Denver, CO; San Francisco, CA • 1m ago

Why This Job is Featured on The SaaS Jobs

This Fullstack Engineer opening sits at the intersection of consumer-grade product engineering and SaaS-scale reliability. Quizlet operates a large learning platform with heavy, always-on usage, which makes fullstack work meaningfully different from early-stage feature delivery. The combination of AI-powered product direction and high interaction volume signals an environment where frontend experience, backend services, and data-informed iteration are tightly coupled.

For a SaaS career, the role offers durable exposure to how subscription-like products are kept performant and cohesive as they evolve. Owning features end to end builds fluency in the full lifecycle that many SaaS companies depend on, from API design and service scalability to user experience and quality practices. Collaboration with Product, Design, and Data also mirrors how mature SaaS organizations translate hypotheses into shipped changes and measurable outcomes.

This position tends to suit engineers who prefer broad scope over narrow specialization and who enjoy balancing product craft with systems thinking. It also aligns well with professionals who want to deepen fullstack judgment through production constraints, code review, and iterative delivery in an onsite, multi-office setup where cross-functional partnering is part of the day-to-day.

The section above is editorial commentary from The SaaS Jobs, provided to help SaaS professionals understand the role in a broader industry context.

Job Description

About Quizlet:

At Quizlet, our mission is to help every learner achieve their outcomes in the most effective and delightful way. We’re a $1B+ learning platform used by two-thirds of U.S. high school students and half of college students, powering over 1 billion learning interactions each week.

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 Team:

Our Fullstack Engineering teams build the core product experiences that power learning at Quizlet. From user-facing features to backend services, we focus on delivering high-quality, reliable, and scalable systems that impact millions of learners globally.

We partner closely with Product, Design, and Data to bring ideas to life quickly and thoughtfully.

About the Role:

We’re hiring Fullstack Engineers across multiple levels (Staff - Principal Engineers), with leveling determined through the interview process.

In this role, you’ll work across the stack to design, build, and ship product features end-to-end. You’ll contribute to both frontend and backend systems, ensuring a seamless, performant, and engaging user experience.

Success is measured by your ability to deliver high-impact features, improve system quality, and contribute to team velocity.

We’re happy to share that this is an onsite position in either our Denver or San Francisco office. To support collaboration, we ask employees to be in the office at least three days a week: Monday, Wednesday, and Thursday.

In this role, you will:

Build and ship end-to-end product features across frontend and backend systems
Design scalable, maintainable services and APIs
Collaborate with Product, Design, and Data partners to define and deliver solutions
Improve performance, reliability, and user experience across the product
Contribute to code quality, testing, and engineering best practices
Participate in system design, code reviews, and team planning

What you bring to the table:

Experience building and shipping production systems across frontend and backend
Strong proficiency in modern web technologies (e.g., JavaScript/TypeScript, React, APIs, backend services)
Experience with scalable systems and performance optimization
Ability to work across ambiguity and drive projects end-to-end
Strong collaboration and communication skills

Compensation, Benefits & Perks:

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 $187,000 - $330,000, 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 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

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.

#LI-DNP

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