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Donatas Simkus, growth marketing and AI

A Growth Department of One

Most marketers use AI. I build growth systems with it.

10+ years of B2B growth across AI, SaaS, FinTech, and Crypto, now built into agents and automations that let a lean team run like a full growth and marketing department.

Donatas Simkus

I'm Donatas Simkus.

Ask my AI anything about my work

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The Work, in Numbers

A decade of B2B growth across AI, SaaS, FinTech, and Crypto.

$3.3B

IPO Campaign Led

Led the marketing campaign for Phoenix Group's $3.3B IPO; the offer closed 180x oversubscribed with retail investors.

180x

IPO Oversubscription

Phoenix Group's IPO saw 180x oversubscription from retail investors.

$138M+

Funding Supported

Part of growth through Series B and C funding rounds totalling $138M+ across multiple startups.

2,000+

Clients Onboarded

Onboarded 2,000+ global accountants in 12 months at Koinly through growth experimentation.

$2M+

ARR from ABM

Sourced 5 enterprise wins worth $2M+ in ARR through strategic ABM program at parcelLab.

The story behind the numbers

Where these came from, and how I work.

Where I've driven growth

AI71
Phoenix Group
Quiqup
Koinly
parcelLab

What People Say

From the founders, CMOs, and operators I've worked with.

Read all 50+ recommendations
AI summary synthesized from every recommendation

AI-synthesized from all 50+ LinkedIn recommendations, 2018 to 2026. Three themes repeat across a decade, five companies, and every seniority level:

  1. 1. Builds fast, especially with AI.

    "Sophisticated AI automations, workflows, and systems faster than I thought possible" (Nico Fernando). "Robust, AI-driven pipelines... one of the most impressive growth plans I've seen" (Raj Vaswani).

  2. 2. Connects the technical and the commercial.

    "Thinks holistically about product, market, and business, not marketing in isolation" (Raj Vaswani). "Connect technical details with broader business goals" (Muhammad Rehan).

  3. 3. A low-ego leader people learn from.

    "Low ego, very thoughtful and a pleasure to lead" (Sachin Pabari, who hired him). "Empowering them to make decisions and grow... always gave credit where credit was due" (Juan Sanz).

"Donatas is one of those rare people who defies a job title. Calling him a marketer doesn't come close to describing what he brings to the table. His knowledge spans far beyond marketing, but what impresses me most is his ability to build. While he may not call himself an engineer, I've seen him create incredibly sophisticated AI automations, workflows, and systems faster than I thought possible. On top of that, he's collaborative, generous with his time, and someone every cross-functional team wants to work with. Any organization would be lucky to have him."

Nico Fernando

Product Marketing Leader | Driving Adoption, Revenue, and GTM for AI Products

Go on, say hi

Let's Start a Conversation

I'm always happy to connect and talk growth.

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