§ Profile

From shipyards to 150 million users.

I'm a marketer who builds, with frontier AI as the workforce. For fifteen years I've done one thing in different costumes: find the channel, measure the funnel, scale the product. At Mondly I grew organic traffic from 10K to 1M and helped take a Romanian language-learning app to 150M+ users worldwide and through an acquisition by Pearson. Today I'm COO at Cratox AI. The degree says maritime navigation and shipbuilding engineering. Turns out the only part that stuck was the shipping.

I work fast, keep things simple, and believe the best marketing advantage today is knowing how to build with AI, not just talk about it.

Cristian BalauCristian Balau · Constanța

§ The chronology

2025 - now

COO · Cratox AI

Operations and growth for an AI-powered nutrition tracker built by the ex-Mondly team: photo-based food logging with personalized health insights.

2024 - 2025

Head of Marketing · Vestinda

Growth for a fintech / automated-trading platform.

2020 - now

Founder · SEO Signal

My digital marketing agency, run alongside the in-house roles. In 2026 the work is growth and user acquisition for apps and SaaS, paid and organic, product marketing, and the marketing systems behind it all, increasingly built with AI agents. SEO is where it started and it is still in the toolbox.

2018 - 2024

Marketing Director · Mondly by Pearson

Helped scale one of the world's top language-learning apps to 150M+ users across 41 languages. Through and beyond the Pearson acquisition: performance marketing, SEO/ASO, lifecycle, analytics. One company, one climb: three titles in 6 years and 7 months.

  • Digital Marketing ManagerJan 2019 - Aug 2023
  • Growth Marketing AnalystMar 2018 - Dec 2018
2015 - 2018

Senior SEO Specialist · Evonomix

Organic growth for e-commerce and SaaS clients.

2013 - 2015

Production Engineer · Daewoo Mangalia Heavy Industries

Naval engineering, shipbuilding production. The unusual origin story.

2009 - 2013

Freelance SEO & Digital · Independent

Where it started: SEO, content and digital marketing for early clients.

§ Education

  • Harvard Business School Online logo

    Harvard Business School Online

    Digital Marketing Strategy · 2024

  • Mark Ritson Mini MBA in Marketing logo

    Mark Ritson Mini MBA in Marketing

    Marketing strategy, the Ritson way · 2022

  • Oxford Saïd Business School logo

    Oxford Saïd Business School

    Digital Marketing: Disruptive Strategy · 2021

  • Constanța Maritime University logo

    Constanța Maritime University

    Naval & Navigation Engineering · 2007 - 2011

§ Disciplines

Growth strategyFull-stack marketingSEO / ASOPerformance marketingProduct analyticsBuilding with AI & automationSaaS & consumer appsTeam leadership