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// Software engineer · founder · Dubai

Tomasz Sadowski

I build products, teams and startups: from one of the UK’s first student hackathons, to a bootstrapped Shopify app acquired by Shop Circle, to ShopTest.ai today.

Programs Open a channel

// Selected programs

Programs

Two companies, one student hackathon and one project in the works.

  • Live PRODUCTCARTCHECKOUTORDERMONITORINGSHOPIFYCHECKOUTS · JOURNEYS · AI TEST GENERATION

    PRG.01 Co-founder · CEO & CTO

    ShopTest.ai (opens in a new tab)

    Monitors Shopify store checkouts and customer journeys, with AI test generation.

    • Live since May 2026
    • Shopify
  • Acquired 4.7620 REVIEWS · SHOPIFY APP STOREOPINEWEST. 2015

    PRG.02 Founder · 2015–2024

    Opinew (opens in a new tab)

    Bootstrapped Shopify reviews app. 4.7★ from 620 App Store reviews, acquired by Shop Circle in 2022.

    • Scottish EDGE winner 2019
    • $25M+ in sales converted
  • Still running The 2016 GUTS hackathon in the Hunter Halls, University of Glasgow.

    PRG.03 Society co-founder · first president

    GUTS hackathon (opens in a new tab)

    Started in Nov 2013 as one of the UK’s first student hackathons. Now “Do You Have The GUTS?”, 300+ attendees in 2025.

    • Since 2013
    • University of Glasgow
  • Beta PLACEHOLDER · ART PENDING YOU

    PRG.04 Custom T-shirts

    Custom T-shirt maker: make yours

    An 8-bit Polish hussar jumps with a padel racket. Upload a face photo, the hussar gets your face, order the shirt.

    • 8-bit Polish hussar
    • Padel racket
    • UAE delivery

// About · service record

Record

Glasgow-trained software engineer turned founder. The short version.

> whoami

I’m Tomasz, a software engineer and founder who builds teams and startups. I studied in Glasgow and co-founded the university’s tech society, which launched one of the UK’s first student hackathons. Then I founded and bootstrapped Opinew, a Shopify reviews app that Shop Circle acquired in 2022. Now I’m building ShopTest.ai from Dubai.

  • BaseDubai
  • FocusShopify
  • ExitOpinew → Shop Circle
  • NowShopTest.ai
SYS.RECORD // TOMASZ.SADOWSKI 6 entries
  1. EDU
    BSc Computer Software Engineering University of Glasgow
    OK
  2. INIT
    Co-founded the Glasgow University Tech Society (GUTS) First president 2013–14 · vice-president 2014–16
    • 1–3 Nov 2013: launched the society’s hackathon, one of the UK’s first student hackathons.
    • It became “Do You Have The GUTS?”, held for years in the Hunter Halls.
    • Still the School of Computing Science’s big annual student hackathon: 300+ attendees in 2025.
    OK
  3. BOOT
    Founded Opinew, a Shopify reviews app opinew.com · bootstrapped
    • 4.7★ from 620 reviews on the Shopify App Store.
    • Converge Challenge finalist 2016 and 2017.
    • RSE Enterprise Fellow 2017–18.
    • Scottish EDGE winner 2019.
    • Built an AI review-ranking feature with Glasgow’s Computing Science department.
    • Helped stores convert $25M+ in sales (2021 press).
    OK
  4. MERGE
    Opinew acquired by Shop Circle Stayed on as General Manager until July 2024
    OK
  5. EVAL
    Startup Selection, Hub71 Abu Dhabi
    ACTIVE
  6. LIVE
    ShopTest.ai: CEO & CTO, co-founder Live since May 2026
    • Monitors Shopify store checkouts and customer journeys, with AI test generation.
    ACTIVE
Tomasz in profile, in a dark suit with glowing orange circuit lines, looking out over a glowing cyan digital landscape with a tall light-beam spire under a stormy sky.

// USER.PROFILE · TOMASZ.SADOWSKI

I’m Tomasz, a software engineer and founder who builds teams and startups.

Now I’m building ShopTest.ai from Dubai.

// Off-duty processes

Interests

What runs in the background when the laptop is closed.

// tail -n 3 /var/log/tomazz

Log

Notes on building, shipping and Shopify.

Open the log

// Consulting

Open a channel

I help with e-commerce and Shopify scaling, building engineering teams, and early-stage startup strategy. If that sounds useful, send a message or book a call.

  • Shopify scaling
  • Engineering teams
  • Early-stage strategy

The message form is coming online soon. For now, reach me on LinkedIn ↗

// Book a 15-min call

15 min · video call · details sent on confirmation

Calendar not loading? Open the booking page ↗