Darragh ORiordan

Modernise your legacy platform for AI without stopping your business.

I'm a hands-on Head of Engineering with 15+ years of experience untangling valuable, complicated systems. I modernise the stack, improve how teams ship, and build the technical foundations for AI.

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Here's what I do.

~15 apps

One modern platform

Problem
Customer-facing APIs and applications were fragmented across ageing frameworks and repositories.
Built
Moved every app into one monorepo, infrastructure to Terraform, and the core stack to React, React Query, Node 24, and strict TypeScript.

10 deploys per dev per week

CI/CD must support AI velocity

Problem
A four-hour manual release ceremony limited the team to shipping once a week.
Built
Created a fully automated CI/CD pipeline with a 30-minute cycle time to production.

30–75%

Lower infrastructure costs

Problem
Cloud costs were too high across AWS, Cloudflare, and the managed database estate.
Built
Moved infrastructure into Terraform and cut AWS costs by 30%, Cloudflare by 75%, and managed database costs by 33%.

60%

Fewer user-facing 500 errors

Problem
Production failures were reaching customers and creating avoidable operational drag.
Built
Improved application reliability and deployment quality until user-facing server errors fell by 60%.

50%

Fewer bug tickets

Problem
Recurring defects were consuming engineering and support time.
Built
LLM and context from code, telemetry, logs, and AWS infrastructure resulted in massive quality improvements.

161 → 0

Docker vulnerabilities in one month

Problem
Legacy container images carried 161 known vulnerabilities.
Built
Rebuilt and hardened the Docker images, removing every reported vulnerability within a month.

AI Automations

AI self-scheduling bugfix and maintenance PRs

Problem
Useful signals were spread across production logs and a large, complicated codebase.
Built
Built self-hosted OpenTelemetry pipelines, a custom MCP, and an autonomous agent that reviews logs and code to generate bug-fix PRs.

SOC 2

Certification achieved

Problem
The platform needed the engineering controls and evidence required for a successful audit.
Built
Led the engineering work across architecture documentation, penetration testing, remediation, and certification.

Have a platform that needs this kind of work?

You can also see my full career history on LinkedIn.

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