Platform Engineer - User Foundation

United States·San FranciscoFull-timemid

EngineeringDevOps & InfrastructurePlatform EngineerDevops EngineerInfrastructure & Cloud

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Quick Summary

Overview

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.

Technical Tools

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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.

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 Role

~3 min read

We’re looking for a Platform Engineer to build and operate the systems that power lifecycle messaging and in-product growth experimentation across Quizlet. The team is hiring multiple levels (Staff - Sr. Staff Engineers), with leveling determined through the interview process.

This role focuses on the infrastructure behind email, push, and in-product messaging, as well as the tooling that enables rapid, measurable growth experiments. You’ll work closely with Product, Data, and Engineering partners to improve activation, engagement, retention, and reactivation through reliable notification systems and fast iteration loops. This is a high-impact role for someone who enjoys building platform capabilities that directly shape user growth and engagement.

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 this work environment enhances efficiency, fosters collaboration, and supports growth for both employees and the organization.

Own email, push, and in-product messaging orchestration infrastructure

Maintain messaging decisioning logic, eligibility rules, and frequency guardrails

Build and maintain systems that support lifecycle programs across activation, engagement, retention, and reactivation

Build and support growth experimentation infrastructure, including feature flag integration, experiment rollout controls, and exposure logging

Partner with Growth PMs and product teams to launch and measure in-product experiments quickly and safely

Ensure notification and experiment systems are observable, reliable, and easy to use

Help define guardrails so lifecycle and experiment programs remain compliant with privacy and Trust & Safety standards

Improve the feedback loop between experiment results, user behavior signals, and product decisions

Strong backend or platform engineering experience building reliable, scalable systems

Experience with notification systems, messaging infrastructure, or lifecycle platforms

Experience supporting product experimentation, feature flags, or A/B testing systems

Familiarity with event-driven systems, queues, APIs, and service reliability

Strong judgment around user experience, notification quality, privacy, and guardrails

Ability to work cross-functionally with Product, Data, and Engineering teams

Comfort operating in a fast-moving environment where speed and reliability both matter

Experience with email or push delivery systems

Experience with Braze or similar lifecycle messaging platforms

Experience with feature flag systems or experimentation frameworks

Familiarity with user targeting, audience logic, or growth analytics

Experience building internal tooling for operators or product teams

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 $200,000 - $300,000, 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