GustavGustav Mårtensson
Mårtensson

I work on products people rely on in everyday life — booking trains, sending mail, and improving sleep. My role is usually helping teams make complex systems understandable and reliable.

Teams usually bring me in when a product has grown complex and decisions start conflicting. If that sounds familiar, email me →

Selected work

  • SJ App

    Planning and traveling by train

  • Sleep Cycle

    Waking up and understanding sleep

  • PostNord App

    Sending physical mail digitally

  • Taxi Stockholm

    Real-time driver work

  • SkiStar App

    Coordinating a ski trip and daily activities

Recognition

  • Apple App Store Editors’ Choice

    Sleep Cycle

  • Swedish Design Award

    SkiStar App

  • Used daily by millions of travellers

    SJ App

  • National rollout of digital postage

    PostNord

DECIDE

Experience

  • Senior Product Designer — Sleep Cycle

    2025 – Present

  • Product Designer — Bontouch (now Framna)

    2018 – 2025

About

I design products people rely on in everyday life — travel, logistics, and health. I work long-term inside teams, shaping structure, flows, and clarity across product and engineering.

My background in photography, architecture, and communication (Berghs School of Communication) informs a calm, reliable approach to complex systems. I’m usually brought in when a product has grown beyond individual screens and needs structure across the whole experience.

Elsewhere

Most of my work lives inside products people use every day. This site only shows a small part of it.

If you’re working on something complex and long-lived — I’d be happy to talk.