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How-to guides, tooling tips and real-world advice for developers and product managers tired of broken software. Let’s fix this mess together.

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How-to guides, tooling tips and real-world advice for developers and product managers tired of broken software. Let’s fix this mess together.

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Line drawing of a rocky mountain peak with a base camp and people building structures

Quality you can’t generate: AI is only as good as your constraints

AI changed the cost structure of software. It didn't change the value structure. The value is no longer the code you write. It's the taste, judgment, and constraints you encode into the system that shapes what AI produces.

Dave Mosher

A figure looks off towards the horizon. On the left is a giant robot, on the right a splash of vibrant color, connected nodes and a city unfurl.

Why we're not chasing the AI hype (And what we're doing instead)

Todd Kaufman

Speed is a side effect of making the system work

Doc Norton

Maximize software investment

Rubber duck in fedora and trench coat stands next to a vintage microphone

IndyPy Talk: Pydantically perfect in every way

Kyle Adams

Software tooling & tips

Double Takes

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Double Takes

TDDing with Claude is like having a pair that removes all the failing assertions every time you go to the bathroom.

Steve Jackson

State machines are the answer for those seeking determinism in the era of AI agents.

Dave Mosher

A Slack conversation left Doc reflecting on what bug bashes say about the systems we work in.

Doc Norton

Test-driven development is to programming what double-entry bookkeeping is to accounting.

Neal Lindsay

The fundamental character flaw of the software creator is not the misguided belief that they can solve any problem with software. Instead, it is the belief they can understand how their own software works before they create it.

Steve Jackson

We may need a SaaS appendix for Zawinski's law:

Any SaaS platform attempts to expand until it is a social network.

Matt Jones

Speaking human: Engineers who communicate effectively with empathy

Test Double's engineers excel in translating complex coding concepts into relatable stories, blending business acumen with empathy. Learn how they bridge the gap between software and business.

Kate McGinty

Communication & teams

communication

consulting

Colored binary numbers spark out from a contract sitting on a table

Fair contracts build trust: How Test Double does it differently

Fixed bid, fixed scope engagements are inherently bad for all parties and a procurement fantasy. Here how we take a more collaborative, fair approach to software consulting contracts.

Todd Kaufman

Maximize software investment

consulting

budgeting

software-purchase

How to test logging in Node.js: practical TDD tips and tricks

Discover practical tips for testing logging in Node.js using TDD. This friendly guide helps you master winston and mockLogger for better test automation.

Joe Marty

testing

node.js

javascript

automation

How to optimize CI/CD with CircleCI for data engineering and ML

Discover the best practices and techniques for using CircleCI to streamline your data engineering and machine learning workflows.

Mavrick Laakso

DevOps & security

ai-ml

ci-cd

devops

dev-experience

5 lessons to be a better software consultant

Join software consultant Jamie Phelps as he reflects on five years of consulting, sharing insights and lessons learned. From juggling tasks to understanding human needs, these lessons are essential for any aspiring consultant.

Jamie Phelps

Recruiting & careers

professional-growth

teams

consulting

Illustration of a semi truck and trailer driving on a highway alongside cars

How to speed up a slow app

Dive into our story of transforming a trucking app's performance, where cutting-edge tech and smart strategies led to a major speed boost.

Kevin Baribeau

Accelerate quality software

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Practical tips to conduct an effective EDI interview

Discover the importance of EDI interviews at Test Double and get practical advice for interviewers and candidates to navigate the process successfully.

Christine McCallum-Randalls

Christine McCallum-Randalls

Equity, Diversity & Inclusion

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A plea for lean software

Discover the enduring insights of Niklaus Wirth on lean software development. Learn how focusing on simplicity and agile practices can eliminate waste and create more efficient, sustainable software teams.

Todd Kaufman

Maximize software investment

agile

budgeting

consulting

teams

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Technology is a means to an end: answers to very human questions. We want to connect with other folks who share that belief.

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Test Double Executive Leadership Team

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