EdTech · AI product · UK
OneFitsEach
One worksheet in, a version for every pupil out.
Education · UK · Co-founder & CTO
- Built end to end
- UK GDPR
Read the case study
Clients in Canada · US · UK
We build software for sensitive data, and make sure it passes the security review.
For health, neurotech and education companies, we take products from idea to launch, take over apps built by agencies, and roll out AI that keeps patient and student data inside your agreements.
Product builds · Fractional CTO · AI for regulated teams · Audits
Where we usually come in
- You need a product built, and the data in it is sensitiveFor example: OneFitsEach
- You've inherited software you don't fully trustFor example: a health app taken in-house
- Your team wants AI, but the data can't leave your controlFor example: AI for a HIPAA-covered team
- You need senior technical judgement, not another hireFor example: intelligence platforms for public safety
Something else? Tell us about it.
Case studies
Selected work
These systems hold brain signals, patient records, children's schoolwork and public-sector intelligence data. David designed and built each one, took it over and made it safe, or led the team that built it. Health and neurotech clients aren't named, for their privacy. The work itself is real and described as it happened.
Neurotech · Real-time systems
Real-time neurofeedback, rebuilt
A neurofeedback system rebuilt from the ground up, so feedback keeps pace with the brain.
Neurotech · US · Lead engineer
- Feedback fast enough to train on
- Feedback tuned to each client
Read the case study
Digital health · HIPAA
Health app brought in-house
Bringing a health app in-house from its agency, with its HIPAA review written down.
Consumer digital health · US · Technical lead
- Agency handover
- HIPAA Security Rule review
Read the case study
Internal tools · Access control
Internal app platform
Internal tools staff can build and launch, with IT still deciding who sees them.
Health sector · US · Platform architect
- Live the next day
- Security enforced by the platform, not each app
Read the case study
Government · Machine learning
Intelligence platforms for public safety
Spotting coordinated hostile activity in live social media, at a volume no analyst team could read.
Public sector · Canada · Co-founder & CTO
- Public-sector intelligence
- Detects coordinated campaigns
Read the case study
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.
Fixed scope or monthly
Product build
We take your product from idea to launch: the app, the AI, the data and the cloud underneath.
Founders and teams who need a product built, not just advice.
What's includedProof: Real-time neurofeedback, rebuilt end to end- Web and desktop apps, from first screen to launch
- AI features and data processing that hold up with real users
- Device and real-time software when hardware is involved
- Cloud infrastructure in your accounts, with privacy built in
Monthly retainer
Fractional CTO
Senior technical leadership without a full-time hire. David owns the architecture, the roadmap and the hard calls, and still writes the code.
- Architecture, roadmap and build-vs-buy decisions
- Hands-on engineering on the critical path
- Vendor, agency and contractor oversight
- Answers for investors' and customers' security questions
Founders and operators who need one accountable technical owner.
What's includedProof: Intelligence platforms for public safety, as co-founder and CTO1-week review · from $5,500 CAD
AI for regulated teams
Let your staff use AI on real work without patient or student data ending up somewhere it shouldn't. The work starts with a one-week review of how your team uses AI today. Then we set up an AI assistant under your agreements, connected to the tools your staff already use.
- A one-week AI readiness review: what's in use, where data goes, ranked fixes and a draft AI-use policy for your staff
- A business-grade AI assistant (Claude, ChatGPT or Gemini), set up under your HIPAA or data-processing agreements
- Connected to your email, documents and internal systems
- Company sign-in and managed devices
- An internal app platform: a safe place for the tools your staff build with AI
Health, wellness and education teams that handle patient or student data.
What's includedProof: AI for a HIPAA-covered team2 weeks · from $11,500 CAD
Codebase audit
Inherited an app from an agency or a team that has moved on? We'll tell you what you actually own, what's at risk, and what to fix first.
- Architecture and code-quality review
- Security and compliance gaps, ranked by risk
- Hosting and release process review
- A 90-day plan your team can follow, or we can carry out
Companies taking ownership of software someone else built.
What's includedProof: Bringing a health app in-house
FOUNDERKELOWNA, BC
David Miller
Founder & Principal Engineer
Who you'll work with
David Miller does the work on every engagement.
He has spent his career on systems where the data is sensitive and mistakes are expensive, and founded Mattagami Techworks in 2024.
He works across every layer, from signal processing and AI systems to cloud infrastructure and the product people use, and stays on to run what he builds. 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
For government & enterprise buyers
Canadian public-sector or supplier-diversity buyer?
Mattagami Techworks is Indigenous-owned, a CCIB Certified Indigenous Business, and listed in Indigenous Services Canada's Indigenous Business Directory. Contracts with Mattagami can count toward the 5% target under the federal Procurement Strategy for Indigenous Business (PSIB).
Questions
Before we talk.
The things people usually ask first.
Do you only take on sensitive-data projects?
No. Most of our work is building products end to end. Sensitive data is where we're strongest, not something your product has to have. If your product doesn't hold patient, student or financial data, we work the same way.
Can you work under our BAA or data processing agreement?
Yes. We work within clients' BAAs and DPAs, and design systems so the agreement holds in practice: data stays in covered services, access is logged, and vendors without coverage never see protected data.
How do you price?
The codebase audit starts at $11,500 and the AI readiness review at $5,500 (CAD, plus tax). Builds are quoted as a fixed price, and fractional CTO work is a monthly retainer. In every case 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 us.
What happens if you're unavailable?
Every decision is written down with the reason for it, so another engineer could pick up the work without us. If a project needs more hands, we'll say so before it starts. We take on a small number of clients at a time, and we'll tell you on the first call when we can start.
Do you work with clients outside Canada?
Yes. Current and past clients are in Canada, the US and the UK. We're on Pacific time, so the working day overlaps with US hours, and UK calls run 4–6 pm London time, which is our 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 us 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 we're not the right fit, we'll tell you who is.