Legacy System
Modernization
& Architecture

The developer who built it is gone. Deploys feel like gambling. Reports take forever. Sound familiar?

I help businesses stabilize, refactor, and modernize the systems they depend on, without risky rewrites or business disruption.

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D5 is me: Shawn Drake. Software architect, a decade-plus of owning systems that couldn't go down. When you work with D5, the person you talk to is the person who does the work. No handoffs, no juniors, no account managers.

What I Do

Legacy System Modernization

Transform outdated codebases into maintainable, modern systems through steady improvements that minimize risk.

System Stabilization & Performance Tuning

Identify and resolve performance bottlenecks, fix reliability issues, and establish monitoring for ongoing health.

Architecture & Refactoring

Restructure tangled code into clean, well-organized systems that your team can understand and extend.

AI Integration

Connect AI to your business data on your terms: your existing permissions, full audit logs, and human approval where it counts. Production-grade, not hype.

The Legacy System Audit

A thorough deep dive that maps your clearest path to modernization.

View Audit Details

legacy_system_audit

$ d5 audit --scan legacy-system

[scan] Architecture & codebase review✓

[scan] Performance & database analysis✓

[scan] Infrastructure & deployment assessment✓

[scan] Stability & error investigation✓

[scan] Versioning & security review✓

[scan] Prioritized modernization roadmap✓

6/6 checks passed. Report ready.

$ _

Problems I Solve

Slow or fragile systems that crash under load

Performance profiling and targeted stabilization, not a full rewrite

Business data scattered across systems that don't talk to each other

Production-grade integrations that connect your tools to your real data, AI-ready when you are

Outdated frameworks and versions with security risks

Incremental upgrades that keep you running while closing vulnerabilities

Risky deployments that require crossing fingers

Automated testing and repeatable release pipelines, so every update ships predictably

Systems no one fully understands anymore

Architecture documentation and knowledge transfer built into every engagement

Stalled migrations or failed rewrites

Phased modernization with working software at each step

How I Work

Quick Discovery Call

30 minutes to understand your situation and determine if I can help.

Legacy System Audit

A thorough analysis to map your system and identify the path forward.

Roadmap Delivery

A prioritized plan with clear recommendations and next steps.

Implementation

Optional hands-on work to execute the modernization plan.

Ongoing Partnership

Optional retainer for continued guidance and support.

Legacy SystemModernization & Architecture