About the role

We're looking for a strong Growth Engineer to independently own end-to-end features to improve user acquisition, engagement, and retention for Ello. You will bridge the gap between engineering, product, and marketing to test and implement data-driven growth strategies. You'll be part of a small and nimble team responsible for the full growth stack, from designing user-facing flows & prototype experiences to developing backend pipelines, experimentation frameworks, and analytics tooling. You are an engineer with a business mindset who enjoys finding leverage through code, loves rapidly iterating based on data, and thrives optimizing funnels and scaling user impact. You are comfortable working full-stack and across multiple programming environments. You have experience building growth features like A/B testing systems, referral programs, onboarding flows, and notifications. You're highly curious and metrics-driven, with a strong bias toward experimentation and execution.

We welcome candidates from all backgrounds - frontend, backend, growth product - but we prioritize strong technical foundations and proven impact on user or revenue growth. You've launched and scaled successful growth initiatives, either at a high-growth startup or as part of a dedicated growth team at a larger company. We work in-person out of our San Francisco office (minimum 3 days/week), and we're big believers in face-to-face collaboration.

Responsibilities

• Build and own growth features end-to-end, from ideation to deployment
• Develop A/B testing and experimentation frameworks to validate growth hypotheses
• Collaborate with product, marketing, and data to identify high-leverage growth opportunities
• Improve conversion, retention, and engagement across the user lifecycle
• Build and iterate on onboarding, referral, and notification systems
• Analyze user data to generate actionable insights and inform strategy

Required Experience

• Engineering:
  
  • Strong experience with growth-focused features (e.g. onboarding flows, developing in-app features, emails/notifications, referral loops)
  • Experience with at least one of: Flutter, React (or equivalent web framework), native Android development in Java/Kotlin, or iOS development in Swift/ObjC
  • Leveraged GenAI tools to accelerate your work impact
  • Familiarity with GenAI models & pipelines, including human eval infrastructure
  • Experience with A/B testing infrastructure and analytics tools (e.g. Amplitude, Mixpanel, Segment, Google Analytics)
  • Familiarity with data pipelines, ETL, and writing custom metrics queries
  • Proficient with modern frontend frameworks (React, Flutter) and backend systems (Python, Node.js, Go, or equivalent)
  • Ability to set up and interpret product metrics, dashboards, and cohort analyses
• Growth & Product:
  
  • Demonstrated experience owning and scaling impactful growth experiments
  • Strong product sense and intuition for user experience and conversion optimization
  • Experience working with marketing teams and customer acquisition funnels
  • Cross-functional mindset: comfortable collaborating across product, design, marketing, and engineering
  • Familiarity with agile development methodologies and collaborative development tools

Nice to have experience

• Experience with building products or features designed for children and parents
• Familiar with the range of tools & services available to build a full end-to-end customer solutions
• Developed solutions that integrated across third-party systems (e.g. Stripe, Twilio, SendGrid, CRMs, etc.)
• Deep understanding of front-end architectures (web & mobile), design patterns, and performance optimization techniques

We look for candidates who

• Have a desire to build & innovate
• Have something to teach us
• Want to do work they are proud of, and ship products they are proud of
• Have an urge to make a real impact on child development at scale
• Take initiative and full ownership of their work
• Prefer open and direct communication grounded in empathy to beating around the bush
• Exemplify integrity in their actions, decisions, and communication
• Want to build meaningful relationships at work

Here are some reasons to be a part of our team

• Dive deep into the rapidly evolving world of AI and interactive learning.
• Experience the joy of turning your designs and code into engaging and educational experiences for children worldwide
• Be part of an A+ team and an engineering culture of excellence