Legacy System Stabilization Sprint
Stabilize business-critical .NET, Java and Angular systems that are hard to maintain, risky to change or poorly documented. We help you understand the system, identify risks, improve delivery control and create a realistic modernization roadmap.
When to call us
If any of these signals sound familiar, a Stabilization Sprint is the fastest way to get clarity and control back.
Business-critical but hard to change
The system runs the business, but every small change takes weeks and feels risky.
Key developers have left
The people who knew the codebase are gone, and the remaining team is afraid to touch core modules.
Releases are risky or stressful
Deployments require late nights, manual checklists and rollback plans nobody fully trusts.
Documentation is missing
Architecture, integrations and business rules live only in people’s heads — not in any document.
Bugs are hard to trace
Issues appear in production with no clear logs, no reproducible path and no clear owner.
Deployments are manual or fragile
There is no reliable CI/CD, environments drift, and small mistakes break production.
You want to modernize but don’t know where to start
You know rewrite-everything is wrong, but you need a realistic, prioritized plan to move forward.
What we deliver
A complete picture of your system — risks, debt, opportunities — and a realistic plan to act on it.
A focused 3–4 week sprint
Understand
Review the system, architecture, repository, deployment process, integrations and critical business flows.
Assess
Identify risks, bottlenecks, missing documentation, testing gaps and quick wins.
Roadmap
Practical stabilization and modernization roadmap with priorities, budget range and recommended team setup.
Why companies work with Lorex
Senior engineers with a track record in business-critical systems across regulated industries. Built in Estonia, delivered across the EU.
Regulated industries
Hands-on experience with GovTech, FinTech, healthcare and logistics — security, audit and uptime are not afterthoughts.
Legacy modernization expertise
We work with .NET, Java and Angular systems built over 10–20 years. We don’t propose rewrites we can’t deliver.
Long-term maintenance projects
Multi-year engagements where the same engineers stay with your system. Knowledge doesn’t walk out the door.
Complex integrations
ESBs, message brokers, government registries, payment rails, on-prem ↔ cloud — we’ve shipped them in production.
Delivery-focused engineering
CI/CD, automated tests, observability and release discipline. Predictable releases instead of weekend deployments.
Estonian engineering company
EU jurisdiction, English-speaking senior team, transparent contracts and a single point of accountability.
Frequently asked questions
Which technologies do you cover?+
We focus on business-critical systems built on .NET (C#, ASP.NET, .NET Framework 4.x → .NET 8), Java (Spring, Spring Boot, JEE) and Angular (1.x legacy through 17+).
Surrounding stack we routinely work with: SQL Server, PostgreSQL, Oracle, RabbitMQ / Kafka, Redis, Azure and AWS, on-prem and hybrid deployments, Active Directory / Keycloak, REST and SOAP integrations.
Do we need to give you full source code access?+
No. For the assessment phase we work under NDA with read-only access to your repositories, build pipelines and a representative test or staging environment.
Production access is not required. We handle credentials through your preferred secrets manager (1Password, Vault, Azure Key Vault) and can sign your standard DPA / processor agreements.
What does the deliverable look like?+
A 30–60 page written report plus a 2-hour working session with your engineering and product leadership.
The report includes: architecture and integration diagrams, risk register with severity and impact, technical debt map, prioritized quick wins, a phased 6–18 month modernization roadmap, recommended team setup and a budget range for the next phase.
Can you continue after the sprint?+
Yes — and most clients do, but there is no obligation. The roadmap is yours and can be executed with any team.
Typical follow-up engagements are dedicated stabilization squads (2–5 senior engineers), staff augmentation into your existing team, or a fixed-scope modernization phase delivered against the roadmap.
How fast can we start?+
Typically within 1–2 weeks of the assessment call, depending on team availability and access setup.
We hold one or two assessment slots per month for new engagements. NDA, contract and access can usually be completed in parallel within the first week.