AI · Legacy rewrites · EST. 2026

Rewrite
your legacy.
Don't rebuild it.

We overwrite COBOL, PHP 5, jQuery spaghetti and forgotten monoliths with AI-native systems — in weeks, not years. No big-bang migrations. No consultant theatre.

12×faster than rebuild
40%avg. code reduction
0big-bang cutovers
before after
1- $r = mysql_query("SELECT * FROM inv...");
2- while($x = mysql_fetch_array($r)){
3- // TODO 2011
 // 47 files · 1,204 lines → 412
1+ export async function getInvoice(id: UUID) {
2+ return db.invoice.findUnique({ where: { id } })
3+ }
what we do

We overwrite systems that were never going to make it.

Override Technologies is a small crew of engineers using AI as leverage — not as a demo. We read your codebase, map the dependency graph, and rewrite it module by module into something your team can actually ship on top of.

Read

Read the legacy

Static analysis, runtime tracing, and an LLM-assisted map of every intent still living in the code — including the ones nobody documented.

COBOL · PHP · VB6 · Delphi
Specify

Specify the override

We produce a rewrite spec that reads like product docs, not a 400-page architecture PDF. Your team signs off line by line.

SPEC · TESTS · SLOs
Rewrite

Rewrite, module by module

Strangler-fig pattern, AI-accelerated. Each module ships behind a feature flag and replaces its ancestor without a cutover weekend.

TS · GO · RUST · PY
Hand back

Hand back the keys

We leave you a codebase your juniors can own, runbooks your SREs trust, and a deprecation plan for the last legacy byte.

RUNBOOK · HANDOVER
how it works

Four phases. No cutover weekends.

Audit

Intake / Audit

Two weeks. We ingest the repo, interview the people who still remember why it exists, and return a risk map.

+ risk map · + spec draft
Strangle

Strangle

We wrap the legacy with an override gateway. Every request is observable. Nothing moves until it's safe.

+ gateway · + telemetry
Rewrite

Rewrite

Modules are rewritten against a golden test set. AI drafts, senior engineers ship. Nothing merges without behaviour parity.

- legacy/* · + core/*
Decom

Decommission

Traffic shifts behind flags. When utilisation hits zero, the old system is archived, not maintained.

- legacy/
services

Three engagement models.

Audit

Override Audit

Two weeks. Repo ingested, intents mapped, a rewrite roadmap you can take to the board — whether or not you hire us.

  • Full codebase + infra read
  • Risk & intent map
  • 90-day rewrite plan
Book audit →
Rewrite

Module Rewrite

Pick a module that's hurting. We rewrite it against your existing contracts and hand it back running in production behind a flag.

  • Strangler-fig deployment
  • Golden test set
  • Zero-downtime cutover
Start rewrite →
Full override

Full Override

End-to-end modernization of a legacy stack. We embed, rewrite module by module, decommission the old system, and hand the keys to your team.

  • Embedded senior crew
  • Monthly decommission targets
  • Full handover & runbooks
Discuss scope →
selected work

Overrides that shipped.

Representative engagements. NDAs kept, stacks real.

PHP 5.6MYSQLTSPOSTGRES

Insurance claims platform

14-year-old PHP monolith overwritten into a typed, event-sourced backend. No cutover.

11weeks, full migration
COBOLDB2GOPOSTGRES

Retail bank settlement

Mainframe batch rewritten into streaming services. 4h overnight job now runs in 38 seconds.

380×faster settlement
DELPHI 7RUSTWASM

Industrial inspection client

Desktop-only Delphi app replaced with a browser-native tool used in 9 plants across EU.

0installers left to maintain
identity system

Slack workspace

A struck-through legacy glyph meeting the override caret. Built to read at 16px in a sidebar.

/override-technologies · 512 × 512

GitHub org avatar

Diff stripes borrow from patch notation. The caret carries the terminal prompt — where every override begins.

github.com/override-technologies · 512 × 512
trusted by engineers at
12legacy systems rewritten
40%avg. code reduction
0big-bang cutovers
start override

Send the repo.
Get the rewrite.

Audits start in the next calendar quarter. Two slots left for Q3 2026. We reply inside 48 hours — usually faster.

Warsaw · Berlin · Remote
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