Sr. Machine Learning Engineer

About Quizlet
Inspired by our belief that anyone can learn anything and powered by our own curiosity, we build the smartest tools we can imagine to help students learn. Quizlet is the popular, global learning platform and app that millions of students, teachers, and everyday people use to study any subject imaginable for school, work, or as part of their personal interests – including two-thirds of high school students and half of all college students in the US. Combining cognitive science and machine learning, Quizlet guides students through adaptive study activities to confidently reach their learning goals. We’re on track to become the undisputed leader in user-generated learning content and engagement at the scale of YouTube. Valued at $1 billion, Quizlet has raised over $60 million in venture capital from investors including Icon Ventures, Union Square Ventures, General Atlantic, Costanoa Ventures, Owl Ventures, and Altos Ventures. To serve our global community of learners, our teams tackle lofty technical challenges and design for use cases across cultures and languages. We work hard, act like owners, and collaborate every chance we get. We’re energized by the potential to power more learners through multiple approaches and various tools.

About The Team
Quizlet’s Machine Learning team is core to Quizlet’s vision of being an AI tutor and go-to student app for everyone. We inspire, validate, build, and continuously improve ML/AI products to scale learning. Some things we’ve worked on include personalized learning experiences by modeling how students learn, smart assessment, and advanced questions. We make use of our vast UGC study content, unique data of billions of study interactions, learning science, diverse domain expertise, cutting-edge ML, and generative AI.

About This Role
We are “full stack” ML data scientists here at Quizlet, involved in everything from ideation to prototype research to technical implementation. This role is part of the growth team, where you will collaborate with machine learning engineers, data scientists, and product engineers to enhance and personalize our new user experience, optimize our lifecycle strategy, and build growth-focused features. This is a hybrid role based out of our Denver, Los Angeles, New York, Seattle, and San Francisco office hubs.

In This Role You Will
- Envision, research, develop, and improve high-impact ML/AI-driven products and features, collaborating closely with cross-functional teams
- Build and maintain production Python services used by over 50M students and teachers around the world every month
- Stay up-to-date with the latest advancements in ML/AI and educational technology to ensure that our platform remains at the forefront of innovation
- Help to continuously evaluate and improve both new and existing ML/AI models and products
- Provide technical leadership and mentorship to junior members

What You Bring To The Table
- 4+ years of experience in machine learning and a proven track record of delivering impactful, production ML solutions at scale
- Experience with building multi-armed bandit models
- Deep understanding of machine learning approaches and techniques, as well as of product and user needs
- Proficiency in Python and production engineering best practices
- Strong problem-solving skills and the ability to develop innovative solutions to complex challenges
- Excellent communication and collaboration skills, with the ability to work effectively in a cross-functional team environment
- Passion for education and a strong interest in leveraging technology to enhance the learning experience for students

Bonus Points If You Have
- Experience working in education technology

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 $150,000 - $215,000, 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 (and we expect you to take them!)
- Competitive health, dental, and vision insurance (100% employee and 75% dependent PPO, HMO, 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, Wellness benefits
- 40 hours of annual paid time off to participate in volunteer programs of choice

In Closing
We hope you are excited about everything you read so far. We highly encourage you to apply for this position, even if you feel you do not meet all the requirements. Quizlet is always looking for amazing folks that believe in our mission and can contribute to our team in various ways - not merely candidates that fit a certain mold.
We have a bias for action, take initiative, and take pride in delivering results. We make informed decisions whenever possible but are unafraid to take calculated risks on great ideas to promote learning. We embrace challenges and see effort as the path to mastery. We’re constantly seeking opportunities to learn and we embrace curiosity. Quality matters at Quizlet, and we hold the bar high on everything we do. We treat each other with honesty and respect, encourage vigorous debate, and seek critical feedback. We value diversity, humility, transparency, and collaboration as the best paths to our success — as individuals, as a team, and as a company.

Quizlet’s success as an online learning community depends on a strong commitment to diversity, equity, and inclusion. We are actively working to build a team that is representative of the diverse communities we serve, and an open, inclusive work environment where all employees can thrive. 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!