Donatas Simkus, growth marketing and AI
I'm Donatas Simkus.
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.
I'm Donatas Simkus.
Ask my AI anything about my work
Start Here
Three ways in: the frameworks I run, the AI systems you can take, and the tools I built. Go straight to what you need.
Playbooks
The frameworks I actually run: a growth-hacking system, an ABM and outbound engine, an AI automation stack, and SEO built for Claude Code. Steal the thinking behind the results.
Read the playbooksAI Blueprints
Working AI systems I built, de-personalized and free. Hand one to your AI agent and it builds the tool on your own machine. Start with the inbox organizer.
Get a blueprintTools
Free Chrome extensions and utilities I built to take the repetitive work out of growth. Install one and use it today.
Browse the toolsThe 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.
Where I've driven growth
What People Say
From the founders, CMOs, and operators I've worked with.
AI-synthesized from all 50+ LinkedIn recommendations, 2018 to 2026. Three themes repeat across a decade, five companies, and every seniority level:
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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).
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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).
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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