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Services Overview
Holistic software investment consulting
Software Delivery
Accelerate quality software development
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Drive results that matter
Legacy Modernization
Renovate legacy software systems
Pragmatic AI
Solve business problems without hype
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DevOps
Scale infrastructure smoothly
Upgrade Rails
Update Rails versions seamlessly
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Build tech & product teams
Technical & Product Assessments
Uncover root causes & improvements
Case Studies
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Accelerate Quality Software
Software Delivery, DevOps, & Product Delivery
Maximize Software Investments
Product Performance, Product Scaling, & Technical Assessments
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Legacy Modernization, Product Transformation, Upgrade Rails, Technical Recruitment
About
About
About
What's a test double?
Approach
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Culture
Culture
Culture & Careers
Double Agents decoded
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Great code for great causes
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Equity, diversity & inclusion
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Bold opinions and insights for tech leaders
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Developers
Developers
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Power up scripts for Rails apps Part 3: Kubernetes

In part 3 of the three part series on Rails scripts, learn about short shell scripts for simplifying Kubernetes interactions from Rails apps.

Ed Toro
Ed Toro
Software tooling & tips
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Developers
Developers
Developers
Power up with Rails scripts Part 2: Docker
Ed Toro
Ed Toro
Software tooling & tips
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Developers
Developers
Developers
Power up with Rails scripts Part 1: Environment setup
Ed Toro
Ed Toro
Software tooling & tips
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Developers
Developers
Developers
Pydantically perfect: Normalize legacy data in Python
Gabriel Côté-Carrier
Gabriel Côté-Carrier
Software tooling & tips
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Double Takes

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Double Takes

Dave Mosher explores using LLMs as digital archivists and resurrects his old GeoCities website. (Remember those!)

Dave Mosher

Davemo shares early experiments with Sora 2: discovered some interesting remix bugs and played around with applying it towards a game idea he's been noodling on.

Dave Mosher

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

Doc Norton

Friday afternoon hot take (after a couple months of engineering exclusively with coding agents):

Context/prompting is a crutch that will only get you so far.

The AI agent does not have a true understanding of both:

  • The business logic that the code it is generating represents
  • The wider system(s) that it is being written to run within

IOW the why of the code.

The result is that no matter how hard you try it is not able to consistently apply rules and/or conventions (eg: logically organizing/co-locating code).

Tom Nightingale

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
AI won’t save your dev team—it will expose leadership cracks
Leadership
Leadership
Leadership
AI won’t save your team—it will expose leadership cracks
AI is like a hyper-productive junior engineer: energetic but lacking judgment. Without leadership and strategy, it can amplify chaos instead of progress.
Test Double Editorial Board
Test Double Editorial Board
Communication & teams
ai-ml
automation
communication
efficient software
eliminate-waste
Developers
Developers
Developers
Should code reviews be mandatory? A look at non-blocking reviews
Are mandatory code reviews a bottleneck for your team? Here's how non-blocking reviews can foster trust, accelerate development, and reduce frustration.
Andrew Walker
Andrew Walker
Communication & teams
productivity
Developers
Developers
Developers
What happens when code reviews aren’t mandatory? An experiment
Code reviews can feel like bottlenecks, slowing progress and increasing frustration. BridgeCare flipped the script with an experiment to make code reviews optional.
Andrew Walker
Andrew Walker
Communication & teams
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Leadership
Leadership
Leadership
Survey: AI is here—and it’s reshaping product management
A new report from the Pragmatic Institute reveals how AI is transforming product management and driving growth. Here are the insights, adoption challenges, and the skills product leaders need to master AI and lead with intent.
Test Double Editorial Board
Test Double Editorial Board
Software tooling & tips
ai-ml
product-innovation
The dangers of abstracting away vendors in code
Developers
Developers
Developers
The dangers of abstracting away vendors in code
When integrating third-party vendors, abstraction is key—but too much can make your code unnecessarily complex and inefficient. Here's how to strike the right balance.
River Lynn Bailey
River Lynn Bailey
Software tooling & tips
api
How a product transformation drove 3x sales growth
Leadership
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Leadership
The road to 3x sales: a case study in scaling with strategy
When scaling exposed gaps in strategy, Test Double transformed a car platform’s chaotic growth into a clear path to 3x sales. Here’s how we did it.
Test Double Editorial Board
Test Double Editorial Board
Product management
kpi
product-innovation
7 takeaways from CIO Tomorrow 2024 for leading transformation
Leadership
Leadership
Leadership
7 takeaways from CIO Tomorrow 2024 for leading transformation
Ohio’s Silicon Heartland is leading the charge in innovation. Here are the 7 most impactful insights from CIO Tomorrow 2024 that will inspire your next transformation.
Cathy Colliver
Cathy Colliver
Communication & teams
ai-ml
Leadership
Leadership
Leadership
Why domain expertise is overrated—and what your software really needs
Industry experience isn’t the solution—it’s the problem. When everyone plays by the same rules, ideas go stale. We cut AWS costs by 25% and drove 3x sales growth—with fresh skills, not insider knowledge.
Test Double Editorial Board
Test Double Editorial Board
Maximize software investment
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