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Jay Nguyen

Open to roles in Darwin & remote Australia

Jay Nguyen

I build and secure the systems that keep an organisation running — from the hardware up to the network and the numbers on top of it.

20+ years across infrastructure, project delivery and campus operations. Currently Campus Coordinator at Canterbury Institute of Management, Darwin, and completing an MSc in Computer Science with Cyber Security at the University of York.

20+Years in IT, from the bench to the project plan
2Countries of operation — Vietnam, then Australia
MScCyber Security at York — completing Jan 2027
3Side projects live and running right now
What I do

Four layers of the same stack

Most people pick one end — the hardware, the network, the security model, or the ledger. Twenty years of the first two, a Master's in the third and a degree in the fourth means I can hold the whole conversation.

Hardware & User Support

Building and installing PCs from components, setting up communication devices and peripherals, and being first point of contact for a whole campus — resolving faults before they turn into tickets.

PC assemblyHardware installComms devicesVoIPHelpdesk

Networks & Infrastructure

Network configuration and administration, web and mail servers, VPN troubleshooting, hosting and colocation. I still run my own production stack — PTE Target serves public traffic from hardware I administer myself.

Network configNetwork adminVPNLinuxApacheCloudflare

Security & Access Control

Completing an MSc in Computer Science with Cyber Security at York, researching whether the MFA methods we recommend are ones people will actually keep using. In practice: role-based admin systems, OAuth, and passkey authentication — including the one guarding this site.

MFA / FIDO2PasskeysRBACOAuth 2.0ISO 27001

Finance & Administration

A Bachelor of Accounting on top of the technical background. Database reporting, reconciliations, and the administrative machinery that sits behind an education provider.

ExcelSQL reportingReconciliationBAS basics
01

Applied AI

Four projects, three integration patterns: an AI scoring pipeline, an automated content pipeline, and self-hosted inference. I cost the API out before I commit to it.

LLM APIsSelf-hostedScoring
02

Self-hosted infrastructure

PTE Target serves public traffic from a single machine I own, fronted by Cloudflare and administered remotely. Anyone can deploy to a PaaS; I know what it costs to run it myself.

LAMPCloudflareRemote admin
03

Privacy by construction

Calcroo works out your take-home pay without your salary ever leaving the browser. Not a policy promise — there is no server to send it to. The cheapest way to protect data is to never collect it.

Client-side computeData minimisation
04

Bilingual delivery

Not just two languages — products built for two markets. PTE Target is Vietnamese-first for an Australian audience, documented in both.

EN / VILocalisationDocs
Selected work

Things I've actually shipped

Four of them, honestly labelled — three you can open and use right now, one still being built. No mockups, no concepts, nothing that only runs on my machine.

PTE Target home page — Vietnamese-language PTE practice platform with AI scoring

PTE Target

Live

A Vietnamese-language PTE practice platform with AI scoring, running on a LAMP stack I host and administer myself, exposed publicly through Cloudflare.

PHPMySQLAI
Case study
BNB Fabrics storefront — fabric shop with search, categories and product listings

BNB Fabrics

Live

A full e-commerce platform for an Australian textile retailer — storefront, Stripe and PayPal checkout, inventory with stock thresholds, order management, and a role-based admin for staff.

PHPMySQLStripeOAuth
Case study
Humanize AI Writing — tool that rewrites AI text to match your own writing sample

Humanize AI Writing

In build

Detecting AI-generated text and rewriting it into natural prose — served from a self-hosted LLM rather than a paid API, which is where the interesting engineering constraints are.

LLMSelf-hostedNLP
Case study
Calcroo home page — Australian tax and pay calculators, updated for FY 2026–27

Calcroo

Live

Australian tax and pay calculators, plus the paperwork utilities that go with them — income tax, HECS, casual penalty rates, salary sacrifice. Every calculation runs in the browser, so nobody's salary is ever transmitted anywhere.

Next.jsClient-side computeTax rules
Case study

Currently

Updated Aug 2026
  • Campus Coordinator at Canterbury Institute of Management, Darwin — IT, student support and campus administration.
  • Completing an MSc in Computer Science with Cyber Security at the University of York, part-time online — graduating January 2027.
  • Writing my research proposal: a task-based usability evaluation of three MFA methods — TOTP, FIDO2 security keys and SMS codes.
  • Building out PTE Target — currently on shared result links and practice-log quotas.
  • Prototyping Humanize AI Writing on self-hosted inference.

Open to IT, systems and cyber security roles in Darwin and remote across Australia.

The fastest way to reach me is email — I answer within a day. Happy to talk about a role, a project, or something you're stuck on.