Product Designer · Design Lead · Behavioral Design

I turn complex products
into clear choices and real impact.

90s Christmas — Soundtrack0:00 / 0:00

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I combine behavioral insight, product strategy and technical understanding to design experiences that work for people, business and the teams building them.

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Poznań, Poland · EU · Remote10+ years in product designFintech · E-commerce · Enterprise

01 / Selected product stories

Behavior into action.
Design into impact.

Four product stories from companies where I shaped multiple products, teams and design practices. Each shows how behavioral insight, product strategy and technical understanding became measurable impact.

01E-commerce · Mobile · Behavioral Design · AI

ERLI

Improving marketplace journeys through behavioral design while helping shape a new AI assistant now live with users.

+78%YoY active-account growth · team context3.2M active customer accounts

Explore the storyPassword protected+

My scope of impact

Checkout abandonment reduced by 4% after a full journey redesign
Coupon utilization increased by 9%
Conversion improved by 3–5% across core journeys
Introducing WCAG improvements and scalable mobile design foundations
Designing a new AI assistant, now in production and being tested with users

View the ERLI story

02Fintech · Design Leadership · Payments

Tpay

Building design capability from the ground up, then using it to improve merchant tools and payment experiences.

+17%YoY growth in Merchant Panel usersMerchant Panel CSAT 2.0 → 3.5

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My scope of impact

Building and leading Tpay's first design team
Creating Aurora, Tpay's first responsive design system
Redesigning the Merchant Panel and helping create TpayGO

View the Tpay story

03Enterprise · SaaS · Design Leadership

PSI

Establishing a design practice for specialized enterprise systems where clarity, reliability and domain complexity matter more than mass-market conversion.

0→5design team built from scratchweb, commerce and on-premise foundations

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My scope of impact

Building PSI's first five-person design team
Creating distinct foundations for web, CloudStore and on-premise products
Redesigning CloudStore and specialist SCADA workflows

View the PSI story

04Fintech · Corporate Banking · Mobile and Web

Santander

Modernizing corporate banking across a full mobile redesign, a dedicated mobile design system and complex web workflows.

+180%mobile user growth during my tenure+7 NPS points after the redesign

Explore the storyPassword protected+

My scope of impact

Full redesign of the iBiznes24 mobile application
Workshops and research with corporate banking users
Creating the mobile design system independently
Designing card, deposit, installment and reporting processes
Researching and validating complex workflows with corporate clients

View the Santander story

Product outcomes are always a cross-functional team effort. Each case study reflects my role and contribution within the wider product organization.

Beyond the selected stories

Selected companies and products I have worked with.

02 / About

Designing products for
real human behavior.

Black-and-white portrait of Wojciech Komolka — Product DesignerPoznań · Poland

I am Wojciech, a product designer and design leader interested in why people do what they do. I combine behavioral design, user research and product strategy to understand motivation, reduce friction and make meaningful actions easier.

My approach draws on behavioral models, cognitive biases, choice architecture and product data. My technical background helps me understand how products are built, where technological constraints come from and how to work with them without compromising the experience. I have applied this thinking across fintech, e-commerce and enterprise software, redesigning products used by millions, building design teams and delivering measurable outcomes for people and business.

01Understand behavior.
Not just feedback.

02Design for people.
Build for reality.

03Reduce friction.
Create measurable impact.

03 / Skills

From discovery
to delivery.

I choose the tool for the question, not the question for the tool.

Product Design

Figma · Prototyping · Design Systems · Responsive Design · WCAG

Product & Strategy

Product Discovery · Behavioral Design · UX Strategy · Design Thinking

User Research

UX Research · Usability Testing · A/B Testing · CRO · Product Analytics (Hotjar, UXCam, GA)

Methodologies

Lean UX · Agile · Design Sprints · Design Thinking

AI

Generative AI · AI-assisted Workflows · Prompt Engineering · Claude / Claude Code / Gemini / ChatGPT / Codex

Leadership

Team Building · Workshop Facilitation

04 / Contact

Complex products deserve clear choices.
Let's design what people do next.

Open for projectsLet's talk

I turn complex productsinto clear choices and real impact.

Behavior into action.Design into impact.

ERLI

Tpay

PSI

Santander

Designing products forreal human behavior.

From discoveryto delivery.

Product Design

Product & Strategy

User Research

Methodologies

AI

Leadership

Complex products deserve clear choices.Let's design what people do next.

I turn complex products
into clear choices and real impact.

Behavior into action.
Design into impact.

Designing products for
real human behavior.

From discovery
to delivery.

Complex products deserve clear choices.
Let's design what people do next.