Growth engineer · E-commerce & AI automation

Cosmin Daniel Zmau

I build e-commerce systems, web apps, online stores and automations that make money.

On a small budget. I plan, build and launch the work myself, and AI agents help me move faster. €500K+ in sales on a platform I built, and 120+ recurring paying users on my app.

View the work → Download résumé PDF
Own brand
€500K+

In sales in 8 months, on an e-commerce platform I built

Own app
120+

Recurring paying users at the September 2026 audit

Client
200+

Customers for a client whose last business had 14 in a year

AI team
6

AI agents I direct, one git branch each

01 / Live now

Three builds. All live.

My own subscription app, a client's lead-generation site and my newest store. I planned, built and launched each one.

https://daqverse.com
daqverse homepage: a 3D night city with a penthouse trading desk
LIVE
PROJECT_01 · MAR 2026 – NOW

daqverse Own product

Subscription web app for futures and prop-firm traders
Founder & product builder · Zentorum LLC
  • Built and launched a paid trading journal with user accounts and Stripe checkout.
  • Shipped trade import from Tradovate and MT4/MT5, prop-firm rule presets and a daily loss limit with a hard lock.
  • Set the pricing: two plans, 15% and 25% off for 3-month and yearly billing, and a 72-hour free trial with no card.
  • Built the acquisition side: 26 feature pages, 7 search landing pages and 6 free trader tools that need no sign-up.
Next.jsVercelStripe3D heroSEO
RESULT120+ recurring paying users at the September 2026 audit
Visit live site ↗
https://sfcdetailing.com
SFC Detailing homepage with a glowing red car-outline logo
LIVE
PROJECT_02 · MAR 2026 – NOW

SFC Detailing Client

Lead-generation website for an auto detailer
Web developer & marketer · Hoffman Estates, IL
  • Built the site to turn visitors into quote requests: a three-step quote form, tap-to-call and prefilled text links, and a 10-question FAQ.
  • Built a service area covering 212 towns in six Illinois counties.
  • Created the intro film and 3D vehicle renders with AI video tools and Blender.
  • The site and daily ads bring in new clients every day.
Lead genService areaAI videoBlender
RESULT200+ customers so far. The owner's previous business had 14 in a full year.
Visit live site ↗
https://zentorum.com
Zentorum homepage: a neon hotel at night with cars out front
LIVE
PROJECT_03 · OCT 2026 – NOW

Zentorum Own business

Shopify dropshipping store for the US
Founder · Shopify
  • Launched a Shopify store for the US market with a hotel-themed homepage.
  • Set up supplier-direct fulfillment and published terms, a refund policy and an FAQ.
  • Built Mili Hunter, a Chrome extension for product research. While I browse Shopify stores, it shows a viral score (my own weighting of third-party sales and ad data), finds supplier matches by photo on AliExpress, Alibaba, CJ Dropshipping and Amazon, and creates draft products in my store through the Shopify Admin API.
ShopifyDropshippingChrome extensionShopify Admin API
Visit live site ↗
02 / The €500K build

€500K in 8 months. On a platform I built.

Zentropia was my own e-commerce brand in Romania. I built the SaaS platform behind it from scratch and automated the repetitive work.

ZENTROPIA.RO● ARCHIVED
€500K+

in sales in 8 months, after a one-month setup

PlatformBuilt from scratch (SaaS)
ShippingHelpship.ro API, automatic AWB
VideoAuto-generated and auto-posted
StatusClosed for health reasons
DatesJan 2024 – Sep 2024
⇄Shipping API

Helpship.ro integration that creates courier tracking numbers (AWB) automatically.

▤Landing-page builder

Generates product landing pages automatically.

★Review builder

Shows reviews collected from several platforms in one consistent layout on product pages.

∑Profit calculator

Built-in profit calculator.

✉Customer messaging

One system to talk to customers.

◉Social auto-posting

Posts to Instagram, TikTok and Facebook on its own.

◆Meta Ads budgets

Adjusts ad budgets automatically.

▶AI video engine

Low-cost engine that finds stronger video angles, then generates and posts the videos.

03 / Track record

Building since 2017.

Esports startups, a real-estate CRM with an AI call agent, international medical events, a bank internship in London and a pro CS:GO career.

2024 – 2025

Ecom Evolved ↗

E-commerce mentor

Mentored students for a year in a coaching program for cash-on-delivery (COD) e-commerce in Eastern Europe, from product research and testing to scaling.

2021 – 2025

Winpoint ↗

Co-founder

Took Winpoint from a side project to a startup with clients: a CS2 match-prediction platform with weekly leaderboards, a Plus membership and a Discord community.

Jun 2019 – Oct 2023

GameAgents

Co-founder · esports organization · started as marketing specialist, while at university

Co-founded the team and started as its marketing specialist: wrote contracts, built the marketing strategy and brought sponsors in. When COVID-19 stopped tournaments in 2020, the team wound down; we started Winpoint in 2021.

2019 – 2021 · 2025

Fidelia Casa ↗

Marketing manager, then web developer & marketing manager · real-estate agency, Iași

Created Fidelia Casa Brokerage with the CEO, a program that helps buyers get better home loans through Fidelia Casa Credit. Rebuilt the company's entire CRM and built a stronger lead-generation system. In 2025 they brought me back to build an AI agent that summarizes call-center conversations, logs each lead in the CRM and emails the key details (when to call, when to view, what the buyer wants, cash or loan, budget) to the agents covering each area.

2018 – 2020

Endpoint Esports

Professional CS:GO player, alongside university · Endpoint Academy and Endpoint x CeX

Played professional CS:GO for Endpoint Academy and Endpoint x CeX. Became a brand ambassador for CeX esports and built a demo-review system: the team uploads match demos, adds notes, draws on them and shares ideas. A larger brand released a similar feature soon after.

Jun 2018 – Aug 2018

HSBC UK · London

Intern

In a team of 8, designed concepts for checking your balance without opening the app and printing the balance on ATM receipts. I also proposed a dark privacy tint for ATM screens. The concepts were not implemented.

Feb 2018 – Oct 2019

Solent University · Southampton, UK

Computing: cybersecurity and ethical hacking track

Tuition fully paid, plus an esports scholarship for CS:GO. Left before graduating after a medical leave.

2017 – 2018

Arkona Medical Events

Event manager & web developer · international medical conferences

Organized conferences and meetings for doctors and professors from around the world: venues, setup, recording and meet-and-greet. Found sponsors, negotiated deals and kept close contact with doctors worldwide. Also helped with website development and updates for UMF Iași ↗, the Grigore T. Popa University of Medicine and Pharmacy.

2013 – 2017

Miron Costin Theoretical High School · Iași

Philology track
◎Strategyaudience · offer
✎Copypages · ads · email
⌘Webfront + back end
▶Adscreative · video
✓App + QAbuild · test
◈Researchvideo trends
MEBuild · Ship
04 / How I work

Hands-on. AI-accelerated.

I run a team of six AI agents in Claude Code, each in its own git branch. I build alongside them and make every call.

01
Brief

I set the goal, the audience and the limits for each agent.

02
Build

I build hands-on and hand clear tasks to agents, which work in parallel.

03
Test

I test every release myself before it ships and redo what isn't good enough.

04
Ship

Only I merge. Nothing goes live without my sign-off.

05 / Stack

Build. Grow. Automate.

Module_A 10

Build

Next.jsReactJavaScriptHTML & CSSAPI integrationsShopifyStripeVercelChrome extensionsGit & GitHub
Module_B 08

Grow

Meta AdsE-commerce & CODDropshippingLanding pagesSEOConversion copyPricing & offersSocial media
Module_C 06

Automate

Claude CodeMulti-agent workflowsMarketing automationAI videoPrompt writingBlender 3D
06 / Contact

Let's build what's next.

Based in Chicago and open to full-time remote roles. I focus on revenue: every build should pay for itself.

  • Growth / marketing engineer
  • E-commerce & Shopify
  • AI automation specialist
  • Website developer
PhoneIn the PDF résumé

LanguagesRomanian (native) · English (full professional)

Download résumé PDF
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