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Services
Services Overview
Holistic software investment consulting

Software Delivery
Accelerate quality software development

Product Management
Launch modern product orgs

Legacy Modernization
Renovate legacy software systems

DevOps
Scale infrastructure smoothly

Upgrade Rails
Update Rails versions seamlessly

Technical Recruitment
Build tech & product teams

Technical 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
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




Menu

Services
Back
Services Overview
Holistic software investment consulting
Software Delivery
Accelerate quality software development
Product Management
Launch modern product orgs
Legacy Modernization
Renovate legacy software systems
DevOps
Scale infrastructure smoothly
Upgrade Rails
Update Rails versions seamlessly
Technical Recruitment
Build tech & product teams
Technical 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

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



UPGRADE RAILS


PUTTING OFF YOUR RAILS UPGRADE?UPDATE SEAMLESSLY





NO ONE REALLY WANTS TO DO A RAILS UPGRADE. SO MANY THINGS COULD GO WRONG, AND
MAINTAINING THE STATUS QUO CAN FEEL SAFE. EXCEPT THE LONGER YOU WAIT, THE MORE
LIKELY SOMETHING WILL GO SERIOUSLY WRONG. YOUR RAILS UPGRADE DOESN’T HAVE TO BE
A PAIN.






UpgradeRails.com is now a Test Double operation!


Jump to section ↓
Simplify upgrades

Mitigate risk

Experience

Future proof

Other upgrades




SIMPLIFY RAILS UPGRADES


RAILS VERSION UPDATES MADE SIMPLE FROM THE CREATORS AND MAINTAINERS OF STANDARD
RUBY

Test Double simplified linting and formatting for Ruby with Standard, so your
team can focus. Now you can do the same for Rails version updates, and let us
simplify the process. We can help you plot out the best course for an upgrade
based on your unique situation and how your engineering team needs to tackle
daily production work.






KEEP ON KEEPING ON


AVOID DOWNTIME AND MITIGATE RISK WHILE UPDATING RAILS VERSIONS

Zero downtime Rails upgrades is a fancy way of saying updating Rails versions
doesn’t have to be a blocker. We focus first on not disrupting the day-to-day.

We proactively identify risks specific to your Rails version update situation.
Our experienced consultants will work to mitigate and reduce the amount of time
necessary to address risks and blockers.

 * Dependencies identified and prioritized
 * Current versions running with functioning tests and test coverage
 * Dual boot strategy that works for your team







WORKING WITH INDUSTRY-LEADING CLIENTS:






UPGRADES ON BIG CODEBASES


RELY ON OUR EXPERIENCE UPDATING THE LARGEST RAILS CODEBASES IN THE WORLD

Rails upgrades can be a slog. We've been there at some of the biggest Rails
shops around—and learned a few useful things to help make your upgrade go
smoother. Like taking an iterative approach to break down the work so it’s less
disruptive to your team!

 * Gusto
 * GitHub
 * Zendesk



Testimonial
Rails Upgrades

I think I speak for every long-tenured Angi person when I say... WOW!

David Olsen, Director of Infrastructure Engineering
Angi
Testimonial
Rails Upgrades

Handybook is pretty heckin modern if you ask me.

Thomas Johnell, VP of Engineering
Angi
Testimonial
Rails Upgrades

I for one like software that is not EOL and still receives security updates.
Nice work!

Chris Sansone, Director of Information Security and Risk
Angi
Testimonial
Holistic Problem Solving

> Test Double brings a lot of good experience and knowledge—not just with the
> project objectives, but also with any other issues they see. They have been
> able to weave in code improvements when time is available, striving to leave
> it in a better state than they found it.

Daniel He
Gusto
Testimonial
Holistic Problem Solving

> Hot take: just have Test Double build all your stuff.

Eileen Uchitelle
GitHub
Testimonial
Data and Development

> Test Double has provided invaluable insight and resources to Pink Ribbon
> Girls. Their work on Metabase and the app has allowed us to grow our services
> exponentially with room to expand into other locations throughout the country.

Lora Davenport
Pink Ribbon Girls





STAY UPDATED EASILY


BE READY FOR THE NEXT RAILS UPGRADE

Most importantly, we'll empathetically help your team get comfortable with
continuous small changes to help manage the risks and address stakeholder
concerns. We believe in incremental progress, enabling learning, and
communication to help others understand changes so future Rails upgrades are
easier. We put a plan in place to leave the team in a better state to run with
Rails upgrades moving forward. So no one needs to stress about future Rails
version updates. Because there are always future Rails updates!






TECH & TECHNIQUES

We also speak a bunch of languages, frameworks, tooling, and techniques. And
we’ll meet your team where they are, using your tools and processes.



+
RailsDiff
+
Rails Guides on Upgrades
+
Gemdiff
+
gem_dating
+
DeprecationSubscriber
+
Dual booting
+
unsafe_params
+
Moderate Parameters
+
Backports
+
Data Architecture
+
Software Architecture
+
Testing techniques
+
Agile, Shape Up & more
+
Standard Ruby
+
Standard Rails
+
Your tools & processes
Swipe to explore



MOAR UPGRADES


YOU GET AN UPGRADE, AND YOU GET AN UPGRADE ...

Upgrades aren’t only for Rails! Our Double Agents have worked on upgrades across
a wide variety of languages, frameworks, tooling, and situations.

 * Ruby, Rails, Elixir, React, Vue, Golang, Python, Angular, AngularJS, PHP,
   Vue, and more
 * Gems, JS packages, developer tooling, CI/CD, logging, analytics tooling
 * Startups and privately held companies at inflection points for scaling

Every company's tech stack and team is unique, but potential upgrade risks have
a common thread. We'll bring our expertise to guide your team safely through the
upgrade, and transfer knowledge so they'll be prepared the next time around.






WE GET THINGS DONE ACROSS SOFTWARE DEVELOPMENT AND PRODUCT MANAGEMENT

We’re multi-threat software consultants. Find out more about our other
solutions.

View all solutions








UPGRADE RAILS CASE STUDIES

See all case studies





Angi
Upgrading a super busy Rails app while reducing tech debt
Gusto
A Ruby on Rails upgrade with no interruptions


UPGRADE RAILS INSIGHTS

See all insights





Leadership
Leadership
Leadership
Why Rails upgrades are so important

When budgets are limited, can you just skip the Rails upgrades and stay on an
older version? Here's what you need to know.

Test Double Editorial Board
Leadership
Leadership
Leadership
Why it’s worth outsourcing your Rails upgrades

Join us as we dive into the secrets of seamless Rails upgrades that safeguard
your platform and boost your operational efficiency.

Test Double Editorial Board
Developers
Developers
Developers
Zero downtime Rails upgrades

No one likes working on Rails upgrades. They can be thankless, time-consuming,
and—worst of all—unpredictable. But later usually means never. Ali Ibrahim
shares a strategy for zero downtime Rails upgrades.

Ali Ibrahim



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







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





Improving the way the world builds software.


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