01 — MODEL
Model first
Working sessions — in person in Brisbane, or remote — to map your clients, work, people, time and rules before any code is written.
→Siphr / Brisbane
Custom software developers in Brisbane.
We're based in the Brisbane CBD, building bespoke software for professional, healthcare and financial services firms — modelled from how your business actually runs. Local enough to sit down together; equipped to work with clients across Australia and overseas.
Why local matters
Brisbane-based, model-first.
In person
The modelling is a conversation.
The most valuable part of a build — modelling how your firm really runs — is best done face to face. Being in Brisbane means we can do that in the room with local firms.
Australian context
Built for AU obligations.
Trust accounting, lodgement deadlines, privacy and compliance are modelled around Australian requirements, not retrofitted from an overseas template.
Not off-the-shelf
Bespoke, not generic.
We build custom software engineered from your operating model — so it fits on day one instead of forcing your firm into someone else's assumptions.
Australia-wide
Local base, national reach.
Our home is Brisbane; our clients aren't only here. The process works remotely just as well, so distance is never the reason not to build the right system.
What we build
Custom software, shaped to your firm.
Every build starts from your firm's model, so no two are the same. These are the kinds of system that model usually becomes.
Core system
The system you've outgrown, rebuilt.
Matters, jobs, engagements, projects or episodes of care — your firm's core unit of work, modelled with its real stages and rules instead of a vendor's template. Often it replaces practice management software you've outgrown.
Workflow
Work that moves itself.
Intake, approvals, hand-offs and deadlines governed by your firm's own rules — so work is routed to the right person in real time, not chased by email each week.
Resourcing
Capacity you can see.
People and their allocations modelled against the work, so utilisation, demand and recovery are live as work happens rather than reconstructed at month end.
Compliance
Obligations, built in.
Trust accounting, lodgement deadlines, consent and record-keeping modelled as rules the system enforces — not a checklist someone has to remember.
Insight
Reporting from one source of truth.
Everything lives in one model, so the numbers partners and directors ask for — margin, pipeline, workload — come straight from the system, not a spreadsheet rebuilt each month.
Integration
Connected to what stays.
Custom doesn't mean replacing everything. We connect the systems you keep — accounting, document management and email — so data flows instead of being re-keyed.
How a build runs
From first conversation to production.
02 — ENGINEER
Engineer from it
The software is engineered directly from that model, so what gets built is what your firm actually does.
→03 — LAUNCH
Go live
A working production system in weeks rather than quarters — then it grows from there.
→04 — EVOLVE
Evolve
When your firm changes, the model changes and the software follows. We stay on.
Who we build for
Software for the firms that run Brisbane.
We go deep in three sectors — professional services, healthcare and financial services — each modelled from how the work really moves.
Professional services
Law firms →
Professional services
Accounting firms →
Professional services
Consulting firms →
Professional services
Engineering & architecture →
Healthcare
Medical & allied health →
Healthcare
Aged care →
Financial services
Financial advice →
Financial services
Mortgage brokers →
All sectors
Every industry we serve →
People & place
Local people, a local office.
Co-founder
Hao Zeng
Works across private credit, property and venture capital — finding value in structural inefficiency and market complexity. Bachelor of Economics, University of Queensland.
Co-founder
Dr Thomas Miller
Solutions architect with 15+ years building blockchain and Web3 infrastructure for global organisations. PhD, Queensland University of Technology.
Our office
In the Brisbane CBD.
33 Queen Street, Brisbane QLD 4000. Open Monday to Friday, 9am to 5pm. Email projects@siphr.com.au.
Where we work
Brisbane, Sydney and beyond.
Face to face in Brisbane, and remotely with clients in Sydney, across Australia and overseas — the modelling and build process works the same either way.
Questions, answered
Brisbane, specifically.
Are you actually based in Brisbane?+
Yes. Siphr is based at 33 Queen Street in the Brisbane CBD. Being local means we can work in person with Brisbane firms during the modelling stage, which is where close collaboration matters most.
Do you only work with Brisbane businesses?+
No. We're based in Brisbane and work with clients in Sydney, across Australia and overseas. The modelling and build process works just as well remotely; the Brisbane base simply makes in-person sessions easy for local firms.
What kind of custom software do you build?+
Bespoke systems for professional services, healthcare and financial services firms — modelled around how the organisation actually runs rather than forced into an off-the-shelf tool's assumptions. Everything is engineered from a formal operating model.
How long does a build take?+
Because the software is engineered directly from the model, builds reach a working production system in weeks rather than quarters, then grow from there. Our development process walks through what happens at each stage.
How much does custom software development cost?+
It depends on scope — how much of your firm the system covers, how complex its rules are, what it needs to integrate with and how much data has to move across. Modelling first is what keeps that predictable: scope is pinned down before the build starts, not discovered halfway through it. Our guide to what custom software costs in Australia breaks down what drives the price.
Should we build custom software or buy off-the-shelf?+
Off-the-shelf is often the right answer when your firm works the way the product assumes. Custom earns its place when the way you really work has moved into spreadsheets and workarounds around the tool — the point where those workarounds cost more than a build. Our custom vs off-the-shelf guide sets out how to tell which side of that line you're on.
Is custom software viable for a small or mid-sized firm?+
Yes — that is our focus. We work with firms that have outgrown off-the-shelf tools but do not want the cost and risk of a large enterprise build. You get software shaped to your firm without an enterprise price tag or timeline.
Will it work with the tools we already use?+
Custom software does not mean replacing everything at once. We model where your firm's source of truth should live, then connect the systems that stay — accounting, document management and email — so data flows instead of being re-keyed. What we replace and what we integrate is a decision we make with you.
Where is our data held?+
Siphr is based in Brisbane and builds for Australian firms. Hosting and data handling are set up around your firm's obligations, and residency, access and retention are decided with you as part of the build.