Sr. Software 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:
The Quizlet engineering study team uses Machine Learning and AI driven technologies to make the learning experience fun and impactful. The team's goal is to expand Quizlet from a US-focused company with 50M active users to a global education platform serving the world's 1.4B student population. This is a full-time position at our new San Francisco, CA office. 
About the Role:
We're looking for a senior full stack engineer to help us improve our learning experiences. This will include constantly improving our current platform, which is built upon modern tools like React, NextJS, Hack, and Spanner. 
This is a hybrid role based out of our San Francisco office.

In this role, you will:

• Build user-facing features and ship experiments using React/Redux
• Develop server-side code using Hack
• Collaborate with other engineers to design and implement APIs
• Build automation and abstractions (such as reusable UI components) to improve development speed
• Architect and implement data fetching and state management systems on the front end
• Work with product designers to iterate on the design and implementation of our product
• Identify and implement performance improvements to our website
• Participate in design, code, and architecture reviews
• Observe user testing to understand and improve usability
• Investigate new technologies that may be of use to the team

Example Projects:
• Design A/B tests to learn and improve new user experiences through data driven decision making
• In collaboration with the data science and machine learning teams, design and build power-user features to add to our premium offerings.
• Designing and building RESTful APIs to facilitate communication between different software components, services, or applications.
• Analyzing and improving the performance of software applications by optimizing code, database queries, and overall system architecture.
• Leading the development of user interfaces and user experiences for applications to enhance usability, accessibility, and user engagement.

What you bring to the table:

• 5+ years of experience building rich, interactive web applications
• Knowledge of service-oriented architecture and microservices
• Experience working on large-scale consumer websites, with attention to scalability and performance concerns
• Experience working with modern front-end JavaScript libraries and tooling — for example, we use NextJS, React, Redux, Flow, webpack, and Prettier
• Background with working with server-side code - i.e Hack, Node.js, and Python and relational databases
• Experience leading projects from inception to completion
• Excitement about the impact your work could have on the lives of students and teachers every day
• Ability to mentor junior engineers
• Excellent organizational and leadership skills
• An aptitude for experimentation demonstrated by being hypothesis-driven, metrics focused and eager to test and iterate

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 $160,000 - $200,000, depending on location and experience, as well as company stock options
• Collaborate with yo