Talent for legacy modernization

We onboard into your legacy system in days — not quarters.

If your platform was built between 2010 and 2020, still runs the business, and the people who built it are gone — Aleph Engineering wraps it in an AI-assisted engineering harness so change gets cheaper, upgrades become possible again, and the system stops depending on one person's memory. Evidence first. No fixed-deadline promises.

system_state.svgbefore → after
LEGACY / UNDOCUMENTED harness MODERNIZED / MAPPED 01 diagnostic 02 inventory 03 architecture recovery 04 handbook + handover
Sound familiar?

Built between 2010 and 2020. Still running the business. Still a black box.

THE PEOPLE WHO BUILT IT ARE GONE

Whoever understood the system left years ago. What's left is code, a production database, and institutional knowledge that walked out the door.

EVERY CHANGE FEELS LIKE DEFUSING A BOMB

No tests, thin logs, unclear blast radius. Teams stop touching what they don't understand — and features stop shipping.

UPGRADING LOOKS COSTLIER THAN SURVIVING

Without a map of the real risk, a rewrite is a leap of faith — so the platform keeps aging while the business depends on it more, not less.

The outcome

What a harness actually buys you

Cost

Lower cost to run and change it

Fewer fire-fights, less senior time burned re-deriving what the system does, and changes that used to take weeks because the behavior is finally documented and tested.

Growth

Opportunities come back on the table

Once you can see the system, you can safely ship features, connect modern tooling and AI, and respond to the business again — instead of protecting the platform from ever being touched.

Resilience

Future-proof, not frozen in time

Documentation, tests, and an incremental migration plan mean the system can keep evolving for the next decade, instead of surviving only until it can't.

Speed

Onboarding in days, not months

The context that used to live in one person's head now lives in a handbook, code maps, and agent-ready documentation — a new hire, or an AI agent, can pick it up fast.

Clarity

Decisions made on evidence, not fear

Leadership finally sees where the real risk and cost sit, so modernization gets funded and scoped with data — not postponed indefinitely out of uncertainty.

How we work

The harness, built in six steps

01

Diagnostic & risk map

Where danger actually lives, ranked by evidence gathered from the running system — not assumption.

02

System inventory

Every service, dependency, and data flow made explicit and current, not left to tribal memory.

03

Architecture recovery

Business capabilities reconstructed from the code that actually runs today, not the diagram from 2019.

04

Test & observability baseline

Characterization tests and monitoring so any future change is measurable, not a leap of faith.

05

Migration plan

A target architecture staged into waves, each one shippable and each one reversible.

06

Handover handbook

ADRs, code maps, and agent-ready context — built so a new engineer is productive within a day.

What we screen for

Engineers rated on what legacy work actually demands

Ranked from most to least critical in our hiring bar:

01
Agentic problem decomposition & coding-agent operation
Directing AI tooling on ambiguous, high-stakes code — not just prompting it.
02
Harness engineering & evaluation design
Building the tests and guardrails that make change safe to verify.
03
Context engineering
Turning tribal knowledge into documentation a person or an agent can act on.
04
Code quality, testing & review
Classical engineering discipline — still the floor, never optional.
05
Architecture & integration judgment
Knowing which seams to cut along, and which to leave alone.
06
Security, privacy & evidence discipline
Handling access and data the way an audit expects, from day one.
07
Collaboration & learning velocity
Working inside someone else's team, culture, and constraints.
How we actually deliver it

AI-native practice, not a language checklist

The language and framework are rarely the hard part — anyone can hire for PHP or Node. What's scarce is the AI-native practice around them: understanding a system nobody documented, engineering the harness that makes change measurable, and turning what we learn into something that keeps working after we leave.

System & architecture mappingHarness engineeringContext engineering Agent-ready knowledge base deliveryAgents built on top of that knowledge base Lessons capture & continuous improvementC4 + ADR methodCI quality gates1-business-day handover practice

Proven across the stacks legacy systems actually run on — PHP, Python, Node.js, React, Flutter, Odoo, mobile, and serverless — without that being the point.

Let's talk

Bring us the system nobody wants to touch.