Legacy system modernisation without a full rewrite
We update legacy products step by step without a risky full rewrite — the product keeps running while it changes from the inside.
- 7+projects in production
- 100%code and access yours
What’s included
The parts the work is made of — and where to read more about related formats.
01
System assessment
What is critically outdated and what can still serve. We spell this out so the result is usable for an estimate, build or handover without guesswork.
- 01Stack
- 02Dependencies
- 03Bottlenecks
- 04What’s worth keeping
Who it’s for
- 01
Companies with a system nobody wants to touch
- 02
Products on outdated tech that's hard to hire for
- 03
Teams whose full rewrite was rejected as too risky
Tell us the task — we’ll outline scope, timeline and cost
The brief takes a few minutes. We reply with the next step, risks, timeline and a cost range.
How the work goes
Stage 1
Diagnosis
We get access and find out how the system really works.
- Access to code and infrastructure
- Architecture review
- Measurements and bottlenecks
- Risks
Stage 2
Prioritised plan
What’s urgent and what can wait.
- Urgent vs. deferred
- Stages without stopping the product
- Estimate for each stage
- Definition of done
Stage 3
Work in stages
The system is changed in parts and checked after each step.
- Fixes and improvements
- Checks after each stage
- Documentation updates
- Regular reports
Stage 4
Handover and growth
The result is recorded and next steps agreed.
- Code and access stay with you
- Change documentation
- Recommendations for the future
- Support — agreed separately
Why TIVONIX
- 01
One owner of the result
The work is led by the TIVONIX founder: responsibility isn’t spread across contractors and decisions are made quickly.
- 02
Diagnosis first, changes second
We work from a written, prioritised plan so nothing that already works gets broken.
- 03
Code and access stay with you
Source code, access, environment settings and instructions are handed to the client. The project isn’t locked to us.
- 04
Built in working parts
We show working parts of the system, not pictures: interface, server side, admin panel and integrations.
More in Improve & Scale
- Product RescueWe take over a struggling product, find the critical causes of failures and bring it to a stable production state.
- Performance OptimisationWe remove frontend, backend, database and infrastructure bottlenecks.
- Security HardeningWe review authentication, permissions, secrets, APIs and critical product workflows.
- Product ScalingWe prepare architecture and processes for growth in users, load and functionality.
- Post-launch DevelopmentContinued development after launch: new features, integrations, optimization and support.
FAQ
Does the system have to be rewritten entirely?
No. Updating in parts is usually better: module by module, with a check after each step.
How long does modernisation take?
It depends on the system’s size and chosen stages. Each stage’s timeline is named in the plan after the assessment.
Do you take on products built by another team?
Yes. We start with a code and infrastructure audit to understand the real state, and only then propose a plan.
How is the cost formed?
It depends on scope: how many roles, screens and scenarios, which integrations and launch requirements, and what already exists. Scope and price are fixed in writing after reviewing the task — before work starts.
How long does it take?
It depends on scope and on what already exists. We name the timeline after reviewing the task and split the work into stages with intermediate results, so you see progress instead of waiting for the end.
What do you need to get started?
A short description of the product and users, the task, and whatever exists already: designs, code, documents, access. That’s enough for a brief — we reply with the next step, risks, timeline and a cost range.
Which industries do you work with?
SaaS, fintech, e-commerce and internal systems. Launched projects include a booking marketplace, an AI commerce platform, a music fintech platform and a partner dashboard.
Who keeps the code and access?
You do. Source code, access and clear documentation are handed over to the client.
