Mike Nash · Fractional CTO · Available for new engagements
I lead technically and build hands-on.
Honest when something's broken.
I take on fractional CTO work - architecture, hiring, engineering culture - and I audit systems that need an outside read before you trust them further.
Founders hand me technical chaos. I hand back something they can actually ship.
Built with AI tools? See the AI Code Audit →
-630% → +36%
TURNAROUND
Division profitability in 6 months
Dexus · NTT · Kalibrate · Lancom
ENGAGEMENTS
Plus NDA'd startups and government
Twelve years
ENGINEERING DEPTH
Full-stack to CTO
What I do
Fractional CTO
Senior technical leadership without the full-time hire. I work with your team to set technical direction, make architecture decisions, hire and grow engineers, and build the systems that let you scale. A CTO who still writes the code and understands what your team is actually dealing with.
Led an early-stage SaaS startup from zero to pre-seed - architecture, stack decisions, MVP build, engineering culture - as sole technical leader. Also rescued a stalled .NET migration at Lancom Technology - six months overdue, back to billable within a month.
AI & Agent Production Audit
AI-assisted builds look convincing. They're not always solid. Before you go live with a system handling sensitive data, real users, or business-critical workflows - find out what you actually have. I review architecture, security, data handling, authentication, integration points, and load behaviour. You get a clear verdict: what's ready, what isn't, and what to fix before you ship.
I've run production-readiness audits under GS007 financial assurance standards at Dexus (ASX-listed, ~$50B+ in assets) and data integrity investigations for agriculture SaaS platforms. Most recently, short-engagement go-live audits for AI-assisted codebases.
Technical Due Diligence
Before you write the cheque. Architecture, code quality, security posture, technical debt, team capability, infrastructure - everything an investor or acquirer needs to know before committing. Written for both technical readers and the people making the investment decision.
Technical audit and compliance assessment at Dexus (ASX-listed, ~$50B+ in assets) - governed under GS007 financial assurance standards. Full architecture, code, and operational risk review.
System Diagnostic & Remediation
Something's wrong and nobody can pin it down. Data going missing. Events misfiring. Performance degrading in ways nobody can explain. I come in, go through the logs, trace the failure patterns, and find it. Some issues I fix directly; others I document precisely for your team. Either way, you stop guessing.
Diagnosed and resolved a critical data integrity crisis for an agriculture SaaS platform - DynamoDB inconsistencies, cross-application conflicts, lost records. Investigated via logs, implemented optimistic locking, fixed GraphQL mutations, built Python reconciliation scripts.
I'm Mike Nash - a technical leader with twelve years in production systems. I take on fractional CTO work, and I go into codebases - AI-assisted builds, inherited vendor work, live systems with unexplained failures - find what's wrong, and tell you exactly what to do about it.
Businesses call me for the leadership they don't have yet, or a technical problem nobody can agree on how to fix.
You need senior technical leadership but aren't ready for a full-time hire
You're a founder or exec who needs someone to tell them the truth, not manage them
You've received a build from an external team and need to know if it's solid before it goes live
Something's broken and nobody can agree where it started or what's actually causing it
You've just inherited a codebase and need a clear picture before you make any real decisions
You're about to raise investment and need an independent technical assessment
Mike brings a level of architectural clarity and engineering discipline that instantly de-risks complex technical builds.
Mike led a squad of four through a complex inherited microservice architecture and made it look straightforward. He picks up new technologies fast, builds relationships across teams and customers without effort, and delivers with real professionalism.
Taking on new engagements now.
30 minutes. No pitch deck. Just an honest conversation about where you are and whether I can help.