Skip to main content
Test Double company logo
Services
Services Overview
Holistic software investment consulting
Software Delivery
Accelerate quality software development
Product Impact
Drive results that matter
Legacy Modernization
Renovate legacy software systems
Pragmatic AI
Solve business problems without hype
Upgrade Rails
Update Rails versions seamlessly
DevOps
Scale infrastructure smoothly
Technical Recruitment
Build tech & product teams
Technical & Product Assessments
Uncover root causes & improvements
Case Studies
Solutions
Accelerate Quality Software
Software Delivery, DevOps, & Product Delivery
Maximize Software Investments
Product Performance, Product Scaling, & Technical Assessments
Future-Proof Innovative Software
Legacy Modernization, Product Transformation, Upgrade Rails, Technical Recruitment
About
About
What's a test double?
Approach
Meeting you where you are
Founder's Story
The origin of our mission
Culture
Culture & Careers
Double Agents decoded
Great Causes
Great code for great causes
EDI
Equity, diversity & inclusion
Insights
All Insights
Hot takes and tips for all things software
Leadership
Bold opinions and insights for tech leaders
Developer
Essential coding tutorials and tools
Product Manager
Practical advice for real-world challenges
Say Hello
Test Double logo
Menu
Services
BackGrid of dots icon
Services Overview
Holistic software investment consulting
Software Delivery
Accelerate quality software development
Product Impact
Drive results that matter
Legacy Modernization
Renovate legacy software systems
Pragmatic AI
Solve business problems without hype
Cycle icon
DevOps
Scale infrastructure smoothly
Upgrade Rails
Update Rails versions seamlessly
Technical Recruitment
Build tech & product teams
Technical & Product Assessments
Uncover root causes & improvements
Case Studies
Solutions
Solutions
Accelerate Quality Software
Software Delivery, DevOps, & Product Delivery
Maximize Software Investments
Product Performance, Product Scaling, & Technical Assessments
Future-Proof Innovative Software
Legacy Modernization, Product Transformation, Upgrade Rails, Technical Recruitment
About
About
About
What's a test double?
Approach
Meeting you where you are
Founder's Story
The origin of our mission
Culture
Culture
Culture & Careers
Double Agents decoded
Great Causes
Great code for great causes
EDI
Equity, diversity & inclusion
Insights
Insights
All Insights
Hot takes and tips for all things software
Leadership
Bold opinions and insights for tech leaders
Developer
Essential coding tutorials and tools
Product Manager
Practical advice for real-world challenges
Say hello

Insights for great software & great teams

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

Sign up and get insights delivered to your inbox.

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

Want to talk shop or tackle a problem in real time? Unpack it with a developer or product manager.

Get our newsletter
Grab time now
A tree made of LEGO with deep roots and a magnifying lens
Leadership
Leadership
Leadership
Healthcare software teams keep fixing symptoms: Real problems run deeper

Healthcare engineering and product teams spend more time managing technology than improving care. Original survey data, industry research, and expert interviews reveal the macro trends and investment patterns holding healthcare software back in 2026.

Cathy Colliver
Cathy Colliver
Legacy modernization
Ensō (Zen circle) with digital flourishes
Developers
Developers
Developers
🐍 Functionally Zen
Kyle Adams
Kyle Adams
Future-proof innovative software
Crab working on a tiny laptop in a sandbox on top of a desk with monitors in the background
Developers
Developers
Developers
Get in the box: Illustrated permissions guide to make Claude chill
Joé Dupuis
Joé Dupuis
AI
Nesting boxes unfold from decorative to scaffolding to hardware
Leadership
Leadership
Leadership
We're about to unwind fifty years of "Progress"
Doc Norton
Doc Norton
AI
All Categories
Click to select
Clear SElection
Thank you! Your submission has been received!
Oops! Something went wrong while submitting the form.
Test Double short-form logo against a green background

Double Takes

+ Expand posts
- Collapse POSTS
Test Double short-form logo against a green background

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
Leadership
Leadership
Leadership
Why managing technical debt isn't like handling credit card debt
Technical debt isn’t like credit card debt. Learn why treating it as such can harm your software development process and discover better strategies to manage it.
Sam Jones
Sam Jones
Legacy modernization
agile
teams
legacy-modernization
tech-debt
Pile of rusty chains
Developers
Developers
Developers
Guide to zero-copy FFI with Rust and Unity
A technical guide to building zero-copy FFI bridges between Rust and Unity. Learn how to pass structs and objects across language boundaries using C-compatible memory layouts and proper ownership patterns.
Michael Schoonmaker
Michael Schoonmaker
Software tooling & tips
rust
javascript
ruby
swift
Wooden pegs sit at intersection of a network diagram
Developers
Developers
Developers
Do we need dependency injection in Ruby?
Curious about dependency injection in Ruby? Learn why it can improve your code quality and testing practices with insights from an experienced software consultant.
Kevin Baribeau
Kevin Baribeau
Accelerate quality software
ruby
testing
Business types hanging out on the back of a train
Leadership
Leadership
Leadership
Running a business, demystified
In this RailsConf 2018 talk, Test Double co-founders Todd Kaufman and Justin Searls answer 12 questions from the development community about starting and scaling your own business.
Todd Kaufman
Todd Kaufman
Communication & teams
teams
communication
founders
My shiny new React application followed by a yacht
Developers
Developers
Developers
Effective React testing
Learn the ins and outs of different types of tests and how to test your React application in Jeremy Fairbank's talk from JazzCon 2018.
Jeremy Fairbank
Jeremy Fairbank
Testing
react
testing
conference-talk
open-source
Please don't mock me
Developers
Developers
Developers
Please don't mock me
Justin Searls boils down nearly a decade of practicing test-driven development with JavaScript to summarize the Do’s and Don’ts of poking holes in reality when writing tests.
Justin Searls
Justin Searls
Testing
api
javascript
testing
ruby
conference-talk
Leadership
Leadership
Leadership
The consultant's code: Building trust in effective software consulting
Explore the essential strategies for building trust in software consulting. Learn how to foster strong client relationships and deliver quality results.
Dave Mosher
Dave Mosher
Accelerate quality software
consulting
communication
teams
Orange toy robot
Developers
Developers
Developers
Getting started with FFI: Rust & Unity
Explore how Rust can take your Unity game to the next level with enhanced performance and robust features. Dive in to find out more.
Michael Schoonmaker
Michael Schoonmaker
Accelerate quality software
rust
ruby
testing
Previous
Load more posts
41 / 49
Letter art spelling out NEAT

You're N.E.A.T.!

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

Ways to connect
Test Double Executive Leadership Team

Learn about our team

Like what we have to say about building great software and great teams?

Get to know us
Rubber duck with Rubik's cube
Test Double double agents at retreat
Test Double double agents at retreat
Test Double rubber ducks and stickers
Test Double double agents at retreat
A keyboard, glasses, test double logo and rubber duckies.
Two test double employees wearing test double t-shirts embrace and smile at the camera.
Two people embrace and smile at the camera at a group event.
A person laughs at the camera in a group setting with a group of people.
Test double rubber duckie in a pool.
Rubber duck with Rubik's cube
Test Double double agents at retreat
Test Double double agents at retreat
Test Double rubber ducks and stickers
Test Double double agents at retreat
A keyboard, glasses, test double logo and rubber duckies.
Two test double employees wearing test double t-shirts embrace and smile at the camera.
Two people embrace and smile at the camera at a group event.
A person laughs at the camera in a group setting with a group of people.
Test double rubber duckie in a pool.
Rubber duck with Rubik's cube
Test Double double agents at retreat
Test Double double agents at retreat
Test Double rubber ducks and stickers
Test Double double agents at retreat
A keyboard, glasses, test double logo and rubber duckies.
Two test double employees wearing test double t-shirts embrace and smile at the camera.
Two people embrace and smile at the camera at a group event.
A person laughs at the camera in a group setting with a group of people.
Test double rubber duckie in a pool.

Let’s collaborate

We’re the team on a mission to improve how the world builds software.

Let’s talk about how to tackle hard software investment problems across the entire product life cycle.

Get started
Calendar icon

Chat with our team

Test Double Office Hours

Curious about what we're like to work with? We offer 30-minute turbocharged office hours with no strings attached—just pure, unadulterated brainstorm power.

Learn more
Test Double company logo
Improving the way the world builds software.
What we do
Services OverviewSoftware DeliveryProduct StrategyLegacy ModernizationPragmatic AIDevOpsUpgrade RailsTechnical RecruitmentAssessments
Who WE ARE
About UsCulture & CareersGreat CausesEDIOur TeamContact UsNews & AwardsN.E.A.T.
Resources
Case StudiesAll InsightsLeadership InsightsDeveloper InsightsProduct InsightsPairing & Office Hours
NEWSLETTER
Sign up hear about our latest innovations.
Your email has been added!
Oops! Something went wrong while submitting the form.
Standard Ruby badge
614.349.4279hello@testdouble.com
Privacy Policy
© 2020 Test Double. All Rights Reserved.