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    Design is learning.

    I believe great design comes from curiosity, experimentation, and learning from every project.

    Selected work

    Every project is a lesson. These case studies explore the learning journey behind each design decision and the insights gained along the way.

    LILT Agent: Lesson in building for (and with AI) case study cover

    LILT Agent: Lesson in building for (and with AI)

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    Lifetramp: A lesson in running a startup case study cover

    Lifetramp: A lesson in running a startup

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    LILT Design System: Cross‑functional collaboration case study cover

    LILT Design System: Cross‑functional collaboration

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    LILT Workflows: Managing complexity case study cover

    LILT Workflows: Managing complexity

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    LILT: Staying in the flow case study cover

    LILT: Staying in the flow

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    Learning through design

    These are some core principles I follow when working on design projects. Each one shapes how I approach problems, collaborate with teams, and create meaningful solutions for users and businesses.

    Kaizen

    The Japanese philosophy of continuous improvement through small, incremental changes. By getting just 1% better every day, we create lasting transformation in our design process and outcomes.

    Purpose-Driven Design

    Learning to understand the 'why' behind every decision. Great design solves real problems and creates meaningful experiences for users.

    Collaborative Growth

    The best learning happens together. I value feedback, diverse perspectives, and the collective wisdom of teams working toward common goals.

    Hypothesis-driven

    Design that converts and helps the user reach their goals thanks to constant experimentation.

    What people say

    Testimonials from colleagues, clients, and collaborators I've had the pleasure to work with.

    "Mariusz is a phenomenal designer and the reason we were able to build so rapidly. His turnaround time on high fidelity mock-ups was incredible and we rarely had to iterate on his initial designs because he understood the product and our users so well."
    Claire Tsukuda
    Claire Tsukuda
    CEO @ Kipsi
    "Mariusz is an incredible product designer. He always made my job as a Product Manager easy. His designs are always comprehensive. He immerses himself in the customer journey. His thorough research is evident in his designs."
    George Pipoly
    George Pipoly
    PM @ Weedmaps
    "Working alongside Mariusz was one of the great privileges of my design career. He can take the most complicated problems and design beautiful and functional solutions with ease and swiftness. Mariusz is a true design leader and would be an invaluable teammate and asset to any design organization."
    Meesh Lin
    Meesh Lin
    Head of Design @ Paragraph
    "Mariusz is an absolute pleasure to work with. He's a seasoned design leader and does an excellent job managing the customer and business goals in tandem with the product design. I give him my highest recommendation!"
    Jordan Lunetta
    Jordan Lunetta
    CEO @ Kiro
    "Mariusz has a great combination of skills. He's highly creative, very technical, and very practical at the same time. I worked with him on a highly innovative, boutique product that needed to bend the rules from anything we have done in the past. Mariusz was the perfect designer for this. He was always steps a head of me and brought really great ideas to the table that made large impacts to the product and still worked within our timeline."
    Danielle Chircop
    Danielle Chircop
    Product @ Kaplan

    Latest thoughts

    Exploring design, technology, and the continuous learning journey through writing and reflection.

    Let's learn together

    The best learning happens in collaboration. Whether you're looking to solve a design challenge or explore new possibilities, I'd love to learn from your perspective.

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    Made with ♥ and vibes. © 2025 Mariusz Cieśla.

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