Bugs & Features

Every bug is an undocumented feature waiting to be discovered

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  • Works On My Machine

    Works On My Machine

  • Works On My Machine

    $29.99
  • Breaking Prod

    Breaking Prod

  • Breaking Prod

    $29.99
  • Coffee Can’t Fix This

    Coffee Can’t Fix This

  • Coffee Can’t Fix This

    $29.99
  • Avoid The Bugs

    Avoid The Bugs

  • Avoid The Bugs

    $29.99
  • Idiot-Proof Software

    Idiot-Proof Software

  • Idiot-Proof Software

    $29.99
  • Release Day Cardio

    Release Day Cardio

  • Release Day Cardio

    $29.99
  • I Test In Production

    I Test In Production

  • I Test In Production

    $29.99
  • It's Not A Toy

    It's Not A Toy

  • It's Not A Toy

    $29.99
  • Code Quality Is Myth

    Code Quality Is Myth

  • Code Quality Is Myth

    $29.99
  • Programmers Problem

    Programmers Problem

  • Programmers Problem

    $29.99
  • Won't Fix Est. Never

    Won't Fix Est. Never

  • Won't Fix Est. Never

    $29.99
  • Ship It Fix It in Post

    Ship It Fix It in Post

  • Ship It Fix It in Post

    $29.99
  • Always Test In Prod

    Always Test In Prod

  • Always Test In Prod

    $29.99
  • Code Debug & Repeat

    Code Debug & Repeat

  • Code Debug & Repeat

    $29.99
  • Skip The Tests

    Skip The Tests

  • Skip The Tests

    $29.99
  • Drink Coffee Fix Bugs

    Drink Coffee Fix Bugs

  • Drink Coffee Fix Bugs

    $29.99
  • Weekend Debugger

    Weekend Debugger

  • Weekend Debugger

    $29.99
  • This Is Fine Probably

    This Is Fine Probably

  • This Is Fine Probably

    $29.99
  • The Debugging Detective

    The Debugging Detective

  • The Debugging Detective

    $29.99
  • I Hate Then I Love It

    I Hate Then I Love It

  • I Hate Then I Love It

    $29.99
  • Coffee Mugs And Bugs

    Coffee Mugs And Bugs

  • Coffee Mugs And Bugs

    $29.99
  • Ask The Rubber Duck

    Ask The Rubber Duck

  • Ask The Rubber Duck

    $29.99
  • Senior Bug Engineer

    Senior Bug Engineer

  • Senior Bug Engineer

    $29.99
  • Tests Trust Issues

    Tests Trust Issues

  • Tests Trust Issues

    $29.99

What Our Customers Say

Don't just take our word for it

10,000+ orders delivered

5 out of 5 stars
I’ve worn this tee to the office, meetups and at home, it just works everywhere!

James

5 out of 5 stars
Great print quality and the fabric feels way better than the usual cheap promo shirts.

Mike

5 out of 5 stars
Arrived faster than expected and fits exactly as the size guide promised.

Christopher

5 out of 5 stars
Customer support was super helpful when I had a sizing question. Felt like a real brand, not a random dropshipper.

Abigail

Not a bug, a feature

When your tests pass but nothing works

Designs for QA engineers who've seen things that shouldn't be possible and developers who've debugged their way through the impossible. For people who ship code anyway.

Soft, durable tees for testers and debugging warriors. Made for people who know perfect code doesn't exist.

BUILT TO LAST

Quality in every stitch

BUILD BY DEVS

By people who get it

CURATED DESIGNS

Apparel you'd wear

LOVED IN TECH

Favored by insiders

Muscles From Coding coding developer funny - Developer T-shirt - techmerch.io
Tag-free comfort
Versatile unisex fit
Great durability
Pre-shrunk
Soft, all-day comfort
Ethical and sustainable

T-shirt that gets the job done

When you buy a developer tee, you expect two things: comfort and quality that lasts.

That's why we use a premium, battle-tested blank built for everyday wear. Soft ring-spun cotton that stays comfortable wash after wash, a modern unisex fit that works for most body types, and a lightweight 4.5 oz fabric that drapes well without feeling flimsy. Reinforced double-stitched hems keep the shape, prints stay sharp, and a clean neckline means no scratchy tags.

This is a t-shirt you can wear to work, in meetings, on casual days, or on weekends without thinking about it. Comfortable, durable, and made to be part of your regular rotation — not just another design that only looks good online.

Tech merch that doesn't cut corners.

QA bug testing t-shirts

Not a bug, a feature

Writing tests that pass while the app crashes in production. Debugging code at 3 AM because "it worked on my machine." QA engineers finding edge cases no one thought possible. Deploying hotfixes on Friday afternoon because someone marked it as low priority. If you've shipped code that's good enough instead of perfect, you'll get these shirts.

For developers, QA testers, and debugging veterans who've made peace with imperfect code. T-shirts about the gap between test coverage and production reality. From "works on my machine" to reproduction steps that make no sense, these designs speak to people who know that shipping beats perfection. Soft, durable fabrics for everyday wear. Made for developers who've learned that every codebase has bugs, some are just better documented than others.

T-shirts > Bugs & Features