Inherited a PHP 5 monolith, an abandoned Django app, or a project the last agency walked away from? We audit it, stabilise it, upgrade it and make it secure — without a big-bang rewrite.
Most "rewrite from scratch" projects are a mistake. The old system encodes years of business rules nobody documented, and a rewrite rediscovers them one production incident at a time. Evosec's legacy modernisation approach is incremental: audit, stabilise, add tests around what matters, upgrade the runtime, then refactor module by module while the business keeps running.
Because our engineers are also penetration testers, the audit doubles as a security assessment — you get a prioritised list of vulnerabilities alongside the technical-debt map, and one team to fix both.
Two to five days. Architecture map, dependency risk, test coverage, performance hot spots and a CVSS-scored vulnerability list.
Error tracking, backups, CI, staging and a regression suite around critical flows before anything else changes.
PHP 5/7 → 8.3, Laravel 5–8 → current LTS, Python 2 → 3, Node LTS — with dependency replacements where packages are dead.
New modules in a modern stack alongside the old, routed incrementally, until the legacy core can be retired.
Schema clean-up and migrations with reconciliation, dry runs and zero-downtime cutover.
ADRs, runbooks and onboarding docs so the next engineer — yours or ours — isn't starting from zero again.
A fixed $2,500–$8,000 depending on codebase size. You receive a written report with a technical-debt map, security findings and a costed modernisation roadmap — usable even if you don't hire us for the work.
Refactor incrementally in 90% of cases. We'll tell you if yours is the 10%.
Yes — we often pair with internal teams, handling the risky upgrade work while they keep shipping features.
That's the normal case. The audit reverse-engineers the architecture and business rules from the code, database and logs.