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

Future-proof innovative software

Trusted to solvehard problems

We succeed when you no longer need us. To future-proof, we focus on maintainability, enacting lasting change, and helping you build great teams.

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Legacy Modernization
Product Transformation
Upgrade Rails
Technical Recruitment
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Legacy Modernization

Modernize legacy systems

From refactoring to rewrites, we’ve got you covered. We apply a pragmatic approach to automated testing and release monitoring tactics. So you can safely refactor with confidence and renovate existing systems—while avoiding an expensive, time-consuming rewrite. If circumstances point to a rewrite as the best option, we’re still here for you. We have experience with large and complex rewrites, including training on new tech.

Legacy rescues for better performance

Product Transformation

Activate and radiate change

Recovering from a transformation miss, or implementing one for the first time? We can help. We’ll co-create a future state focused on strategy, operating model, and processes. We meet your team where they are and introduce change that sticks.

Prioritize critical change
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Upgrade Rails

Upgrade Rails seamlessly

Upgrade to secure, stable, and supported versions of Rails (and other mission critical languages, frameworks, libraries, and tooling).  Clients like GitHub, Gusto, Zendesk and more chose Test Double to upgrade existing Rails applications forward and avoid risks. You get more than a predictable upgrade plan: we mentor your team to stay updated. Because there’s always another Rails version update.

Rails upgrades without the headaches

Technical Recruitment

Build tech teams from leaders to ICs

To recruit the right-fit software engineers, product managers, and tech leaders you need to speak their language. We do. Collaborating with our 90+ developers and product managers offers ongoing insights into the software landscape. We make candidate-centric placements, plus improve processes for lasting impact. So you hire the right people faster, and are prepped for future hiring success.

Build tech teams thoughtfully
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SERVICES

We get things done from strategy to execution.

We uncover the root causes of problems across the entire software lifecycle—and embed with your team to solve them.

Software Delivery

Facing challenging software problems?

Accelerate software delivery without losing sight of maintainability, quality, and scalability—so you reach your software investment goals faster.
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Product Management

Your team busy but not hitting business goals?

Launch a new product quickly, turn around an existing product, scale your product portfolio, or enable a modern product org.
Explore service

Legacy Modernization

Thinking about a big rewrite?

Renovate existing systems safely with our pragmatic approach to automated testing tools. (And we do rewrites, too, when it’s the best option.)
Explore service

DevOps

Wasting too much on infrastructure?

Scale sustainably with holistic DevOps approaches to achieve more predictable costs, observable infrastructure, and smoother delivery.
Explore service

Rails Upgrades

Facing end of life support on Rails?

Simplify Rails upgrades and avoid risks by relying on our experience updating Rails at the largest Rails codebases around: GitHub, Gusto, and Zendesk.
Explore service

Assessments

Searching for the root cause to a thorny problem?

Uncover how to improve your software investment with recommendations based on your unique product, systems, infrastructure, and team.
Explore service

Talk to a Double Agent

Not sure what you need?

We’re no stranger to tricky software and product challenges. And we've cleaned up messes left by less-than-stellar contractors. Chances are we can identify the next best step for your situation.
Let's talk

Technical Recruitment

Hiring top tech talent taking too long?

Build your team thoughtfully with help from technical recruiters who speak software development and product management.
Explore service
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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.

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