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About

Jacob Piorecki

I’m Jacob, a Lead Product Designer based in Poland with 8+ years building and scaling B2B and B2C SaaS products, including Web3 platforms and data-driven tools. I lead design from an ambiguous problem to a shipped system, with a consistent focus on usability, scalability and measurable business outcomes.

I’ve led design for global teams and clients across the US and Europe: end-to-end experiences for Web3 ecosystems, dashboards and B2B SaaS products, including full design system builds and rebrands. Since 2023 I’ve run Prodular, a studio that leads product design for B2B and B2C SaaS companies in the US, where I manage and mentor a team of three designers.

What I care about: hierarchy over decoration, evidence next to the decision, and colour only where it means something. I like dense products and the discipline they demand.

Get in touchDownload CVLinkedIn
How I work
  1. 01

    Problem framing

    I start with the questions a person asks in the moment that matters and let those set the information architecture. Screens come last.

  2. 02

    Systems and design ops

    Design systems built from scratch and kept alive, data models drawn before the interface, and tokens engineering can build against without guessing.

  3. 03

    Interface craft

    Dense, high-stakes UI with real hierarchy: typography, tabular numbers, state and motion. I build working React prototypes to test it at real size.

  4. 04

    Leadership

    Three designers managed and mentored, clients and stakeholders handled directly, and delivery owned from ambiguous brief to shipped system.

Experience
  1. Mar 2023 – Present

    Prodular Studio

    Founder & Lead Product Designer

    Embedded design partner to B2B and B2C SaaS companies in the US and EU. I own the work from the first interview to the shipped screen.

    • Hired and lead a team of three designers, and set how the studio hires, runs critique and hands work to engineers.
    • The studio runs AI-first. I prototype in code with AI pair-programming, so a client clicks through a real build instead of reading a flat file.
    • Average engagement runs past 24 months, every client through referral.
  2. Apr 2023 – Dec 2025

    Patterns (formerly Tokenguard)

    Lead Product Designer

    Sole designer on a Web3 analytics platform used by 7 blockchain ecosystems and 80+ dApp teams. Research, data modelling, IA and UI, all of it mine.

    • Built the design system from scratch and kept it alive for 7 developers.
    • Led the Tokenguard to Patterns rebrand: product, marketing site, identity. Nine weeks, no downtime.
  3. Sep 2022 – Feb 2023

    Semiflat

    Product Designer

    Designed an internal HR platform for a startup: org structure, employee records, admin workflows. Nobody using it daily was technical.

  4. Jan 2021 – Jun 2022

    Reviderm Poland

    Product Designer, E-commerce

    Designed, built and ran the e-commerce store myself: UX, storefront, merchandising, checkout. Revenue grew 2.4x in 18 months.

  5. May 2019 – Jan 2020

    Purebroadband

    UI/UX Designer

    Designed the marketing site and the postcode checker for a UK internet provider, which is where most visitors found out whether they could buy at all.

  6. Oct 2017 – Mar 2023

    Independent Product Design Consultant

    Trading as JP Media Int.

    Product and brand work for startups and established businesses in Europe and the US, run alongside the jobs above.

Skills and tools

Research and discovery

  • Workshops
  • Interviews
  • User testing
  • Analytics
  • User flows

Design

  • Wireframing
  • Prototyping
  • UI/UX design
  • Design systems
  • Style guides
  • Auto layout

Leadership

  • Team and design leadership
  • Client and stakeholder management
  • Design ops
  • Mentorship

Brand

  • Brand identity
  • Rebrands
  • Marketing

Tools

  • FigmaDesign, systems, prototyping
  • ProtoPieHigh-fidelity interaction
  • React, TypeScript, Next.jsCoded prototypes and front-end
  • Framer, WebflowMarketing sites

Domains I’ve designed for

  • AI evaluation
  • Energy operations
  • Field service
  • Web3 analytics
  • B2B SaaS
  • E-commerce

Languages

English and Polish (native), Russian (basic).

Now

Looking for a Senior or Lead Product Designer role on a team building something complex.

Remote or hybrid, working with teams in the US, the UK and across Europe. Strongest in B2B products with real operational density: fintech, security, AI systems and data-heavy SaaS. Product partnerships through Prodular are welcome too.