Growth Engineer

pubGENIUS is a AdTech startup and we're looking for a Growth Engineer to own the full experimentation loop from infrastructure to insight to implementation. This is a high-leverage, high-autonomy role: you'll build the systems that let us run experiments, instrument the metrics that tell us if they're working, and ship the changes that move the needle on growth.
You won't just be executing a backlog. You'll be generating ideas, validating them with data, and iterating fast.
What You'll Do
Build the experimentation foundation
Design and maintain the A/B testing infrastructure for our website and mobile app
Build data pipelines that capture user behavior and surface experiment results clearly and quickly
Instrument analytics so we always know what's happening and why
Run experiments end-to-end
Implement test variants from copy tweaks to new onboarding flows to feature experiments
Define success metrics and measure the true impact of each change
Analyze results, document learnings, and translate findings into next steps
Drive growth ideas
Proactively generate hypotheses based on data, user behavior, and best practices from high-growth companies
Prioritize and pitch ideas for greenlight; own execution on approved experiments
Stay close to the product and business to identify the highest-leverage growth opportunities
Requirements
What We're Looking For
Strong full-stack engineering skills comfortable working across web, mobile, and backend systems
Experience building or working with A/B testing frameworks and analytics pipelines
Data-driven mindset: you know how to design a clean experiment, read the results honestly, and avoid common pitfalls like p-hacking or novelty effects
Product intuition you think like a user and naturally generate ideas that could improve activation, retention, or conversion
Bias toward action and ownership; you don't wait to be told what to build next
Familiarity with growth practices at consumer tech companies
Nice to Have
Experience as the first or only growth engineer at a startup
Background in growth, lifecycle, or product analytics roles
Familiarity with tools like Mixpanel, Amplitude, Segment, LaunchDarkly, or similar
Why This Role
You'll have real ownership over a critical part of the business with a short feedback loop between your work and its impact. This isn't a support role it's a foundational one. The infrastructure you build and the experiments you run will directly shape how the product grows.
Benefits
Fully remote From EU or North America
Flexible hours with some overlap with Pacific Standard Time (PST)
28 Paid vacation and sick days
We do not work with staffing agencies or third-party recruiters. Direct applicants only.
pubGENIUS is an Equal Opportunity Employer; employment with pubGENIUS is governed on the basis of merit, competence, and qualifications and will not be influenced in any manner by race, age, colour, gender, religion, national origin/ethnicity, veteran status, sexual orientation, marital status, gender identity, mental or physical disability, or any other legally protected status.