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
  • Avoid The Bugs

    Avoid The Bugs

  • Avoid The Bugs

    $29.99
  • Not A Bug A Feature

    Not A Bug A Feature

  • Not A Bug A Feature

    $29.99
  • Debugging At 3 AM

    Debugging At 3 AM

  • Debugging At 3 AM

    $29.99
  • Release Day Cardio

    Release Day Cardio

  • Release Day Cardio

    $29.99
  • It's Not A Toy

    It's Not A Toy

  • It's Not A Toy

    $29.99
  • Coffee Can’t Fix This

    Coffee Can’t Fix This

  • Coffee Can’t Fix This

    $29.99
  • Bug Bounty Hunter

    Bug Bounty Hunter

  • Bug Bounty Hunter

    $29.99
  • Drink Coffee Fix Bugs

    Drink Coffee Fix Bugs

  • Drink Coffee Fix Bugs

    $29.99
  • QA Found It Again

    QA Found It Again

  • QA Found It Again

    $29.99
  • Weekend Debugger

    Weekend Debugger

  • Weekend Debugger

    $29.99
  • Ask The Rubber Duck

    Ask The Rubber Duck

  • Ask The Rubber Duck

    $29.99
  • It's A Feature Now

    It's A Feature Now

  • It's A Feature Now

    $29.99
  • Skip The Tests

    Skip The Tests

  • Skip The Tests

    $29.99
  • Senior Bug Engineer

    Senior Bug Engineer

  • Senior Bug Engineer

    $29.99
  • Tests Trust Issues

    Tests Trust Issues

  • Tests Trust Issues

    $29.99
  • Only Bugs And Fixes

    Only Bugs And Fixes

  • Only Bugs And Fixes

    $29.99
  • Local Test, Global Fail

    Local Test, Global Fail

  • Local Test, Global Fail

    $29.99
  • Stable Till Interacted

    Stable Till Interacted

  • Stable Till Interacted

    $29.99
  • The Bug Brought Friends

    The Bug Brought Friends

  • The Bug Brought Friends

    $29.99
  • Test Coverage Lies

    Test Coverage Lies

  • Test Coverage Lies

    $29.99
  • Code Blooded Bug Free

    Code Blooded Bug Free

  • Code Blooded Bug Free

    $29.99
  • Loops Of Doubt

    Loops Of Doubt

  • Loops Of Doubt

    $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 graphic tee, you expect two things: comfort and quality that lasts.

That's why we use a premium, battle-tested blank that holds up to everyday wear. Soft ringspun cotton that stays comfortable after washing, a modern unisex fit that works for most body types, and pre-shrunk fabric that keeps its shape. Prints that stay sharp, and a tear-away label so there's no itchy 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