Modernize legacy code.
Without a rewrite.
Senior engineers with years of hands-on experience in large production systems. We take over existing codebases, map how they really work, pin their behavior with tests, and upgrade them step by step. The system keeps running while it gets better.
Sound familiar?
Your system works, but it's hard to change. We make it safe to change again.
Nobody wants to touch it
Changes break things in unexpected places.
Outdated runtime and frameworks
Old Java, Spring Boot, Go or Node versions, unpatched dependencies.
No tests, no docs
Knowledge left with the people who wrote it.
Slow, manual releases
No CI/CD, no containers, risky deployments.
Experience you can rely on
We've been inside legacy systems
Monoliths, outdated frameworks, systems without tests or documentation. We know where they break.
Production-first mindset
High-load, business-critical services where downtime costs money. We plan changes around that.
Architecture, not just code
We decide what to keep, what to refactor and what to replace, and explain why.
How we modernize
Free assessment call
What the system does, what hurts, what must not break.
Legacy audit
Fixed price. We map the codebase into an architecture model, diagrams and a dependency map, find the risks, and deliver a modernization roadmap. You keep the report either way.
Pin the behavior
Characterization tests capture how critical paths work today, so every later change is checked against reality.
Upgrade in increments
Small, reviewed and tested steps with a demo each week. No big-bang rewrite.
What we modernize
- Runtime and framework upgrades (e.g. Java 8 → 21, Spring Boot 2 → 3, older Go versions)
- Dependency and security updates
- Test coverage on critical paths
- Architecture documentation generated from the real code
- CI/CD pipelines and containerization
- Extracting services from a monolith, only where it pays off
Our principles
Behavior first
Nothing changes until current behavior is pinned by tests.
Small steps
Incremental changes you can review, ship and roll back.
No lock-in
You get the code, tests and documentation. Any competent team can continue.
Two ways to engage
Fixed-scope modernization
A defined upgrade at a fixed price after the audit, paid by milestones.
Start with an audit →Dedicated engineers
Senior engineers join your team to modernize continuously.
Extend your team →Have a system that's hard to change?
Talk to a senior engineer, not a salesperson. Free 30-minute assessment call.
Book a free assessment call