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MATTAGAMI

Indigenous-ownedCanada · US · UK

I build software for sensitive data, and make sure it passes the security review.

I'm David Miller, a senior engineer and fractional CTO for health, neurotech and education companies. Web and desktop apps, AI features, data processing, device software and the cloud underneath: I design it, build it and keep it running.

Request a call See the work

Product builds · Fractional CTO · AI for regulated teams · Audits · Replies within one business day

What I build

Case studies

Selected work

Brain signals, patient records, children's schoolwork and public-sector intelligence data. Each is a real system I designed and built. Health and neurotech clients aren't named, for their privacy; the work is described exactly as built.

All work

Services

Ways to work together

Have your product built, have a senior technical lead on call, bring in AI safely, or start with an audit. You work with me directly in all four.

CoreFixed scope or monthly

Product build

I take your product from idea to launch myself: the app, the AI, the data and the cloud underneath. One engineer who has built every layer, so nothing falls between teams.

Founders and teams who need a product built, not just advice.

What's includedProof: Real-time neurofeedback, rebuilt end to end
OngoingMonthly retainer

Fractional CTO

Senior technical leadership without a full-time hire. I own the architecture, the roadmap and the hard calls, and I still write the code.

Founders and operators who need one accountable technical owner.

What's includedProof: Secure internal app platform
Fixed scopeFixed-scope sprint

AI for regulated teams

Let your staff use AI on real work without patient or student data ending up somewhere it shouldn't. Set up under your existing agreements, connected to the tools they already use.

Health, wellness and education teams that handle patient or student data.

What's includedProof: AI for a HIPAA-covered team
Low-risk start2 weeks · fixed price

Codebase audit

Inherited an app from an agency or a team that has moved on? I'll tell you what you actually own, what's at risk, and what to fix first.

Companies taking ownership of software someone else built.

What's includedProof: Bringing a health app in-house
David Miller
FOUNDERKELOWNA, BC

David Miller

Founder & Principal Engineer

Indigenous-owned business

Who you'll work with

You hire me, not an agency.

Mattagami Techworks is me, David Miller. I've spent my career on systems where the data is sensitive and mistakes are expensive: brain signals, patient records, children's schoolwork and public-sector intelligence.

I work across every layer, from signal processing and AI systems to cloud infrastructure and the product people use, and I stay to run what I build. You get one person who knows how all of it fits together, and who answers for it.

Since 2018
leading engineering on sensitive-data systems
2×
companies co-founded
Every layer
device software, AI, data and cloud
4 sectors
public sector, health, neurotech and education
More about me

For government & enterprise buyers

Buying under PSIB? Contracts with Mattagami count.

Mattagami Techworks is Indigenous-owned and listed in Indigenous Services Canada's Indigenous Business Directory, so contracts with Mattagami support the federal 5% Indigenous procurement target, and supplier-diversity goals in the private sector.

Capability statement (PDF)Procurement details

Questions

Before we talk.

The things people usually ask first.

Is it really just you?

Yes. You work with me directly, from the first call to launch. No account managers, no hand-offs to juniors. If a project needs more hands than mine, I'll say so before we start, not after. Everything lives in your accounts, scripted and documented, with decisions written down, so another engineer could pick it up without me.

Can you work under our BAA or data processing agreement?

Yes. I routinely work under BAAs and DPAs, and I design systems so the agreement is actually enforceable: data stays in covered services, access is logged, and vendors without coverage never see protected data.

How do you price?

Audits and scoped builds are fixed price. Fractional CTO work is a monthly retainer. Either way you get a written number before any work starts, not an open-ended hourly bill.

Who owns the code and infrastructure?

You do, from day one. Everything is built in your own accounts, with the setup scripted and documented. If we stop working together, nothing leaves with me.

Do you work with clients outside Canada?

Yes. Current and past clients are in Canada, the US and the UK. I'm on Pacific time: overlap with US working hours, and UK calls at 4–6 pm London time, which is my morning.

Can you subcontract on a government or enterprise bid?

Yes, as prime on scoped work or as a specialist subcontractor. Mattagami Techworks is Indigenous-owned and listed in the ISC Indigenous Business Directory, so the work can count toward PSIB and supplier-diversity targets.

Tell me what you're building.

A 30-minute call, no pitch deck required. You'll leave with a straight answer on scope, cost and risk. If I'm not the right fit, I'll tell you who is.

Request a call david@mattagami.tech