Growth Platform Engineer

We’re looking for a Senior or Staff Growth Platform Engineer to build and operate the systems that power lifecycle messaging and in-product growth experimentation across Quizlet. 

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.

In this role, you will:

• 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

What you bring to the table:

• 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

Bonus points if you have:

• 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

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 $167,366 - $259,390, 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