Software · Modernisation · AI Agents

Modern software.
Legacy systems reborn.
AI agents that do the work.

We build custom web applications, rebuild the old systems your business still depends on as secure cloud web apps, and put AI agents to work on the repetitive tasks slowing your team down — designed, built and supported by one New Zealand team.

  • Custom Web Apps
  • SaaS & Portals
  • Legacy → Web
  • AI Agents
  • Workflow Automation
  • APIs & Integration
0
Own SaaS products in production
0
Countries our software serves
0/7
AI agents that never clock off
0
Big-bang cut-overs
Who we are

Software that fits how your business works — not the other way round

CHN Arch is an Auckland-based software company. We help businesses replace spreadsheets, ageing databases and disconnected tools with modern web applications, and then make those systems smarter with AI agents that handle the routine work. We build our own SaaS products too, so we hold client work to the same standard as software we run ourselves.

  • Product builders, not just contractors

    We design, ship and operate our own platforms — Trakeit and LegalMate — in production every day.

  • Modernise without the risk

    Staged migrations, parallel running and reconciled data mean the business keeps trading while the old system is retired.

  • Practical AI, with guardrails

    Agents scoped to a clear job, connected to your real systems, logged end to end, with a human in the loop where it matters.

  • Local and accountable

    Based in Panmure, Auckland. You talk to the people building your system, and we support it after launch.

Explore our services
Developers working on a web application
Full-stack development
Laptop screen showing code
Business analytics dashboard
What we do

Three things, done properly

Most engagements combine all three: build the platform, bring the old data across, then add AI where it saves real time.

Software development team at work

Custom Software Development

Web, mobile and SaaS systems built around your processes, your people and your data.

  • Full-stack web applications
  • SaaS platforms, customer & staff portals
  • Offline-capable mobile apps
  • APIs and third-party integration (Xero, M365, CRM)
  • Cloud hosting, CI/CD and monitoring
Team reviewing an existing business system

Legacy System Modernisation

Turn the system nobody dares touch into a secure web app everyone can use — anywhere.

  • Access, Excel, VB6 & WinForms to web
  • System discovery and business-rule capture
  • Data cleansing, migration & reconciliation
  • Staged roll-out with parallel running
  • Security, roles and audit trails built in
Laptop screen showing AI agent code

AI Automation & AI Agents

Agents that read, decide and act inside your systems — not just another chatbot.

  • Email, invoice & document processing
  • Knowledge assistants over your own data (RAG)
  • Multi-step back-office workflow agents
  • Customer-service & triage agents
  • Human approval, guardrails & audit logs
Technology

Modern, mainstream, maintainable

We choose proven technology your next developer will recognise — no lock-in to us or to an obscure framework.

Applications

  • Angular
  • React
  • .NET / C#
  • Node.js
  • Python

Data & Cloud

  • MS SQL
  • PostgreSQL
  • Azure
  • AWS
  • REST APIs

AI

  • Claude
  • OpenAI
  • Agent frameworks & MCP
  • Vector search / RAG
  • Document OCR
Our work

What we build

Modernisation and AI delivery for clients, and SaaS products of our own.

Capability · Legacy modernisation

From legacy to web, without the big bang

Keep the business rules. Lose the risk.

Many businesses run on a system built years ago by someone who has since moved on — an Access database, a tangle of spreadsheets, a desktop app that only works on one PC. We map what it really does, including the workarounds nobody wrote down, and rebuild it as a secure, browser-based application. Data is cleansed and reconciled, modules switch over one at a time, and the old system stays available until you're confident.

  • Business-rule discovery
  • Data migration & reconciliation
  • Parallel running
  • Role-based access
  • Audit trails
  • Works on any device
Before → after
ORDERS_v7_FINAL.mdb
Cust#10442
Status??
Updatedby hand
Users1 PC
Orders
Acme Ltd · #10442Shipped
Harbour Co · #10443Pending
Kauri Ltd · #10444Live
Any browserMulti-userSecure loginFull history
Capability · AI automation

AI agents that take work off your team

Read. Decide. Act. Ask a human when it matters.

An AI agent is more than a chatbot. It reads an email, invoice or form, works out what needs to happen, and carries it out in your real systems — creating the job, updating the record, drafting the reply. We scope each agent to a clear job, give it only the access it needs, log every action it takes, and route anything consequential to a person for one-click approval.

  • Inbox & document triage
  • Invoice & PO extraction
  • Knowledge assistants
  • CRM / ERP updates
  • Human-in-the-loop
  • Full audit log
Accounts agent — run #2817
Read supplier email1 PDF invoice attached
09:14:02
Extracted invoiceINV-5521 · $4,380.00 · 3 lines
09:14:05
Matched to PO-1187Quantities and prices agree
09:14:06
Awaiting approval to post to XeroOver $2,000 threshold
ApproveReview
09:14:07
Our product · SaaS

Trakeit

Always know what's next

An all-in-one field service and operations platform for trades businesses across New Zealand and Australia. Jobs, quoting, invoicing, assets and maintenance in one place — with a Compliance Passport QR code on site that lets any client, auditor or inspector scan and see live inspection records, photos and service due dates without needing a login.

  • Job scheduling & dispatch
  • Offline mobile app
  • Asset & QR tracking
  • Quotes, invoices & payments
  • Xero integration
Passed
Due
On site
Our product · AI SaaS

LegalMate

AI-powered legal research for New Zealand law

LegalMate answers New Zealand legal questions in plain language and shows its working — every answer traced back to the legislation it came from. It's the same retrieval-augmented AI approach we use to build knowledge assistants over our clients' own documents, policies and procedures.

  • Retrieval-augmented AI
  • NZ legislation corpus
  • Document analysis
  • Cited answers
  • Angular + cloud
legalmate.nz
LegalMate answer
Employment Relations Act 2000 s 67A s 67B
Typical engagements

Problems we solve

The kinds of projects we take on. Client names are withheld.

Paper & spreadsheets → web app

Paper production records replaced with a guided web application

Challenge
Batch records kept on paper and spreadsheets — hard to search, easy to skip steps, and slow to audit.
Solution
A browser-based workflow application with guided steps, automatic checks against specifications, controlled overrides with reasons and timestamps, live status boards and CSV export.
Fully traceable Every record searchable, attributed to an operator and ready for audit.
AI document agent

Inbound document processing

Challenge
Staff re-keying invoices, orders and forms from email into business systems.
Solution
An agent that extracts, validates and posts the data, escalating exceptions to a person.
Hours back Staff review exceptions instead of typing every document.
Data integration

Line data into head-office reporting

Challenge
Operational data wasn't reaching the quality team, so reports were built from incomplete records.
Solution
Automated collection into MS SQL with scheduled reporting at the end of each shift.
Automatic Reports produced without manual collation.
RAG knowledge assistant

Answers from your own documents

Challenge
Policies, procedures and reference material spread across folders nobody can search.
Solution
A secure AI assistant that answers in plain language and cites the source document — the approach proven in LegalMate.
Cited answers Every response traceable to its source.
Who we help

Sectors we work in

Trades & Field Services
Legal & Professional Services
Manufacturing & Operations
Logistics & Distribution
Finance & Back Office
SMEs & Start-ups
How we work

Clear, reviewable phases

You see working software early and often — and nothing goes live until you've signed it off.

1

Discover

Map your processes, current systems, data and goals.

2

Prototype

Clickable designs or a working agent pilot, reviewed with your team.

3

Build

Short iterations with a demo at the end of each one.

4

Migrate

Data moved, reconciled and run in parallel before cut-over.

5

Launch & train

Go-live support, user training and documentation.

6

Support & evolve

Hosting, security updates, monitoring and new features.

Security and responsible AI by design

Role-based access, encryption in transit and at rest, and audit trails come as standard. For AI work we use business-grade services that don't train on your data, give each agent the minimum access it needs, log every action it takes, and keep a person in control of decisions that matter.

Common questions

Frequently asked questions

The things people ask us before the first meeting.

What does CHN Arch do?

CHN Arch is a New Zealand software company based in Panmure, Auckland. We do three things: build custom software, modernise legacy systems into secure web applications, and deploy AI agents that automate real business workflows.

We also build and run our own SaaS products, Trakeit and LegalMate, so we understand what it takes to keep software reliable in production — not just to deliver it.

Our business runs on an old Access database, spreadsheet or desktop app. Can you replace it without disrupting the business?

Yes — that's the core of our modernisation work. We start by mapping what the existing system really does, including the undocumented workarounds staff rely on, then rebuild it as a web application in stages.

Data is cleansed, migrated and reconciled; the old and new systems can run side by side; and each module is switched over only when your team has signed it off. No big-bang weekend cut-over.

What is an AI agent and what can it do for my business?

An AI agent is software that can read information, make a decision and take an action inside your systems, rather than only chat. Typical first agents process inbound emails, invoices and forms; answer staff or customer questions from your own documents; or run multi-step back-office tasks.

We design agents with clear limits, full audit logs and human approval for anything consequential, so you get the time savings without losing control.

Is our data safe when you use AI?

We design for it from the start: business-grade AI services that don't train on your data, role-based access, encryption in transit and at rest, and a log of what every agent did and why. Where data residency matters, we'll design around it.

How does a project start?

Usually with a short discovery workshop. We look at your current systems and processes, identify the highest-value software, modernisation or AI opportunities, and give you a prioritised roadmap with indicative effort before you commit to a build.

Do you support the software after launch?

Yes. We offer hosting, security updates, monitoring and continuous improvement, so the system keeps evolving with the business instead of becoming the next legacy system.

Where are you based and who do you work with?

We're at 14 Clifton Court, Panmure, Auckland 1072, and work with businesses across New Zealand and Australia. Most work is delivered remotely, with in-person workshops where they help.

Office hours are Monday to Friday, 8:00am–5:00pm. Reach us on +64 27 397 8652 or at info@chnarch.com.

Ready to modernise?

Start small. A short discovery workshop gives you a clear roadmap for software, modernisation and AI before you commit to anything.

Get in touch

Let's talk

Send us the short version and we'll come back within one business day.

Visit

14 Clifton Court,
Panmure, Auckland 1072

Hours

Mon–Fri, 8:00am – 5:00pm

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