Hi, I'm Petri 👋

Design Systems Lead focused on tokens, components, governance and AI workflows that ship.

📍Helsinki, Finland
🗣️Finnish, English
PL
Availability
Available Part-Time

Design systems, governance, DesignOps.

About

I'm a Design Lead and Design Systems specialist with 20+ years across product design, brand, and enterprise UX. I help teams scale quality and speed by building design systems, governance, and DesignOps that developers actually adopt. I build the spine: tokens, components, patterns, governance, adoption. AI accelerates the workflow; quality and accessibility stay non-negotiable. Selected clients include Alma Media, City of Helsinki, DNA, Elisa, Finnair, KONE, Metso, Nokia, Nordea, SAP, S-Group, UPM, VR.

Work Experience

V

VertaaUX

Founder and CEO

Jan 2026 - Present

K

KnobSmith Audio

Founder & CEO

Jan 2026 - Present

S

SAP Build

2 roles

Mar 2022 - Present

D

Digitaltableteur

Founder and CEO (Creative)

Jan 2003 - Present

N

Nitor

Senior Designer

Feb 2019 - Mar 2022

N

New Things Co

Senior Designer

Sep 2017 - Feb 2019

S

SC5

Art Director

Sep 2014 - Jan 2016

Skills

Product Design
User Experience Design
User Interface Design
Visual Design
User Research
Wireframing
Prototyping
Design Thinking
Information Architecture
Design Systems
Accessibility (WCAG)
Enterprise UX

Check out my latest work

I've worked on a variety of projects, from strategic design initiatives to complex product redesigns. Here are a few of my favorites.

Helsinki Design System
Helsinki Design System
Public sector design system work with accessibility rigor and multi-team governance. Raised WCAG AA compliance from ~65% to 98% across city digital services. Shared components adopted by 12+ city departments, eliminating ~40% of duplicated UI work. Cut new service launch time from 3 months to 6 weeks.
Design Systems
Public Sector
Accessibility (WCAG)
React/TypeScript
Governance
SAP Build Apps Design System
SAP Build Apps Design System
Enterprise design system for 300+ developers across 5 product teams. React-based system with TypeScript, SAP UI5 Web Components. AI-assisted documentation and design ops workflows.
Design Systems
Enterprise
React
TypeScript
AI Workflows
DesignOps
VertaaUX
VertaaUX
AI-assisted UX comparison and evaluation tools. Building products at the intersection of design systems and AI workflows.
AI
UX Tools
Design Systems
Product Development
KnobSmith Audio
KnobSmith Audio
Audio tools and products. Founder-led product development.
Product Design
Audio
Founder
Petri Lahdelma - Design Systems Lead focused on tokens, components, governance and AI workflows that ship. | Portfolio | The Good Side | The Good Side