Product Manager · Builder · Maker

Roman Martins

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Engineer turned PM. I've spent 10 years making complex things work — from LEGO's manufacturing floors to AI products I built and shipped myself. I write the spec and build the thing.

10+
Years engineering
4+
Years with AI
1,000+
Books shipped
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About

Engineering background.
Product instinct. Bias toward shipping.

Most PMs understand product or understand AI. I've spent a decade in engineering and four years building hands-on with AI. That combination is rare.

Career Arc

Product Development Manager
JENSEN Group
Feb 2025 – Present

Leading a 10-person cross-functional product development department. Responsible for new product development and lifecycle upgrades of complex industrial equipment across Europe and China.

Product StrategyTeam LeadershipRoadmapping
AI Product Lead & Founder
Dasbinjaich.de / Unlimited Art Agency
Jun 2021 – Feb 2025

Led product strategy for a personalised AI-powered publishing platform. Built end-to-end AI workflows, prompt architectures, and QA systems — scaling to 300+ books produced. Also ran an AI automation agency building custom GPT-based systems for business clients.

AI ProductsEntrepreneurshipLLM Integration
Senior Engineer & Team Lead
DIS / CREADIS
Dec 2016 – Mar 2021

Led cross-functional engineering teams delivering complex industrial and manufacturing solutions for global clients. Drove advanced manufacturing initiatives including additive manufacturing, aligning engineering execution with business strategy.

Engineering LeadershipAdvanced ManufacturingCross-functional Teams
Engineer → Lead Professional
LEGO Group
2009 – 2015

Grew from injection molding technician to Lead Professional in LEGO's Concept Factory. Led manufacturing innovation initiatives, established new technological test environments, and coordinated global engineering teams.

EngineeringManufacturingInnovation

How I Work

Technical credibility
Engineers trust me. I understand the tradeoffs, the constraints, the cost of complexity.
🤖
Hands-on AI depth
Not just a user — I've built agents, automated workflows, and shipped AI products.
🎯
Product instinct
From discovery to delivery. I know how to find the right problem before solving it.
📐
Small team mentality
Most effective when everyone ships. No committees, no handoffs — just people who own things end to end.

Tools & Stack

ClaudeOpenAI APIClaude CodeAI AgentsPrompt EngineeringPythonFigmaLinearNotionn8nVercelGitHub

Work

AI products I've built

Shipped products, not slide decks. Each project started with a real problem and ended with something working.

📚
Shipped

AI Children's Book Platform

End-to-end AI product. Parents input a child's name and theme — the platform generates a personalised story with AI-illustrated pages and routes it through print-on-demand fulfilment for physical delivery.

My Role
Founder & Product Lead
Outcome
1,000+ books sold in Germany. Full lifecycle: idea → AI pipeline → fulfilment → revenue.
LLM IntegrationProduct DesignAutomationPrint-on-demand
Live

Ghost PM Signal — PM Intelligence Dashboard

Live PM intelligence for Ghost product decisions. Aggregates Ghost Forum feature votes (880+ topics), GitHub issues, ActivityPub strategic signals, HN community sentiment, and Kit competitor changelog — synthesised by Claude into a four-part PM decision brief.

My Role
Designer & Builder
Outcome
An experiment in automated PM intelligence — turns 7 live data sources into a structured weekly decision brief using Claude.
Claude APIMulti-source AggregationPM ToolingVercel
🔭
Live

Stakeholder Lens — AI Roadmap Translator

Paste your roadmap once. Get four audience-specific views — engineering, sales, exec, and customers — in seconds. Each view uses a distinct prompt architecture tuned to what that audience actually needs to hear.

My Role
Designer & Builder
Outcome
Eliminates hours of manual roadmap reformatting. Grounded in product context, not generic AI output.
Claude APIPrompt ArchitecturePM ToolingVercel
Live

AI Implementation Scoping Tool

Describe a business problem. Answer 3 AI-generated discovery questions. Get a structured implementation scope: recommended AI approach, process automation table, phased rollout, risks, success metrics.

My Role
Designer & Builder
Outcome
Full AI implementation scope generated in under 2 minutes — no login required.
Claude APIStructured OutputVanilla JSVercel

Also built

AI Opportunity Scanner

Ranked map of AI opportunities — Quick Wins vs Strategic Bets, with effort, impact, and tool recommendations.

AI Product Discovery Simulator

Generate user personas, run simulated interviews, receive a synthesised discovery brief — multi-agent, 4-phase flow.

Contact

Let's build something
worth building

Interested in AI products, collaboration, or just want to connect? I'm always happy to talk to people working at the intersection of AI and product.

Currently active

What I'm focused on

DomainAI Product Development
InterestsLLMs, agents, AI workflows
BuildingAI tools & automation systems
BackgroundEngineering + Product + AI
BasedDenmark · Works globally
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