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I Make Numbers Go Up.

I'm Rudolph Musngi, a growth marketer. For 13 years I've helped brands scale with SEO, ASO, experiments and a healthy obsession with data. Right now I'm Senior Growth Marketing Manager at Jurafuchs.

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Conversion rate2.1%Baseline
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Baseline · 2.1% CVR

Worked With

From early-stage startups to a global edtech platform, these are some of the teams I've helped grow.

The Receipts.

Thirteen years of shipping, testing and occasionally breaking things on purpose.

Years in the game13+
Growth experiments run200+
Users reached25M

Stuff I'm Weirdly Good At

Marketing, experimentation and analytics, all in one person. I connect the dots between disciplines so the work actually moves.

Black Belt

Data Analysis

Spreadsheets don't scare me. Bad data does.

Black Belt

Conversion Rate Optimization

If it's a button, I've probably A/B tested it.

Black Belt

Product-Led Growth

Onboarding, activation, retention. The product is the funnel.

Expert

App Store Optimization

I've rewritten more app titles than I can count. Most of them ranked.

Expert

SEO

Organic traffic is my love language. Ask me about crawl budgets at parties.

Pro

Content Marketing

Words that pull their weight in the funnel.

Where I've Been.

Ten years at Brainly, from market specialist to project growth lead. Now growing Jurafuchs, plus a freelance practice running since 2015.

Jurafuchs2025 – Now

Senior Growth Marketing Manager

Growth, experimentation and data. Structured testing, clear measurement and repeatable systems that help the product scale.

Brainly2023 – 2025

Project Growth Lead

Ran global cross-functional growth projects across product, engineering and marketing. Fixed the workflows, cut the noise and moved user growth and retention.

Brainly2016 – 2023

Senior Growth Marketing Specialist

Owned ASO for Brainly's US listings on Google Play and the App Store to grow organic installs. Built push campaigns that lifted activation and retention, across 200+ growth experiments.

RebelsMarket2021 – 2022

Growth Manager

Ran the marketplace growth operation. Built experiments from qualitative and quantitative data to lift conversion, revenue and engagement.

Brainly2015 – 2022

Market Specialist, Philippines

Content, community and marketing for Brainly Philippines, which grew past 10 million Filipino users. Grew users in the market by 250% as Senior Content Specialist.

Freelance2015 – Now

Growth Marketer

SEO, ASO, CRO and lifecycle consulting for startups and small businesses. Organic growth with ROI you can actually point at.

Fresh From The Blog

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Got Something To Grow?

Book 30 minutes. Bring the problem, I'll bring the questions.