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Mark Lewis, mechatronics engineer and founder of NeutrinoMark Lewis · Mechatronics engineer · Melbourne

Outgrown your spreadsheets?

Pick the one process that eats your week. I'll fix it in about two weeks, and you'll see a working sample before you pay a cent.

Book my free 30-minute call
  • Free working sample in 2 business days
  • Fixed price from $2,500
  • Works or your money back
Jobs this week
Same job in 5 filesWhich one is current?
Quotes_2026.xlsx
CustomerQuoteStatus
Harris & Co$4,200sent?
Lee Fab3.8kWON
Job board (Sam).xlsx
JobDueWho
Harris fitoutFri??Sam
LF-019214/10—
orders_export (2).csv
OrderCustAmt
#1182harris4200.00
Copy of Copy of Invoicing.xlsx
InvoiceJobPaid
INV-311Harris??
JOBS TRACKER v7 FINAL.xlsx
JobCustomerStageValueDue
2Harris fitoutHarris & Codone4,20010/10
3Harris Fit-outharrisDone?4200Fri
4LF-0192Lee Fabin prog3.8k??
5TOTAL#REF!

Sound familiar?

  • Timesheets arrive as emailed spreadsheets, then someone retypes them into payroll.
  • The same job gets typed into the quote, the job board and Xero.
  • Rostering is one person, a phone and a lot of texts.
  • Nobody finds out a job was underquoted until weeks after it's done.

Every one of these costs you hours, every week, forever. You don't need another app to learn. You need the worst one fixed, built around how you already work.

What's it costing you to leave it?

Move the sliders. Your numbers, your estimate.

$0$20k$40k+Cost per year
$16,640
Cost per year: $16,640
Every fortnight you wait$640
Fix pays for itself inabout 8 weeks

The Two-Week Fix: from $2,500, once.

Book my free 30-minute call

How it works

  1. Find the leak

    A free 30-minute call. Share your screen and walk me through the job that isn't working. That's all the prep there is.

    Free · one call

  2. See a working sample

    A working sample of the fix, built around your problem and running on demo data. Not a report: something you can click. It's a preview, and it stays with me.

    Free · within 2 business days

  3. Get the real thing

    I build the real fix on your live data and test it with the people who'll use it. Your data stays yours and nothing locks you in. Half to start, half when it's working.

    From $2,500 · about two weeks

The working sample

Free

  • Runs on demo data, never your live data
  • Shows the shape of the fix so you can judge it
  • A preview, not the product: it stays with me

The build

From $2,500

  • Runs on your live data
  • Tested with the people who'll use it
  • Your data, always yours
  • A permanent licence to use and change your system, so nothing locks you in
  • Optional support and hosting: $149 a month, or I hand it over to run on your own accounts
  • Need the source code outright? Full ownership is available for double the build price

Don't take my word for it. Click it.

This is the kind of working sample you get within two business days. Approve the shifts, fix the flagged clash, and send it to payroll.

This runs on demo data. Your sample is built around your actual job, and the build you buy runs on your live data.

Fortnight ending 11 Oct

0 of 6 approved · 142.5 h
Aisha K.
Site lead
3 shifts24.5 hoursPending
Ben T.
Technician
4 shifts31.0 hoursPending
Chloe R.
Apprentice
2 shifts15.5 hoursCheck
Saturday 10:00–14:00 entered twice (4 h overlap)
Dev P.
Installer
3 shifts26.0 hoursPending
Ella M.
Workshop
3 shifts22.5 hoursPending
Finn O.
Driver
2 shifts23.0 hoursPending
Total 142.5 h
Fix the flagged entry before sending.

Want one built around your job?

Book my free 30-minute call

Everything you get with The Two-Week Fix

ItemWhat's includedTerms
01A call to find the leak. Thirty minutes, no prep.Free
02A working sample of your fix within two business days, on demo data. It's a preview and stays with me.Free
03The finished fix on your live data, built around the tools you already use, or a purpose-built replacement where that's the honest answer.Fixed price
04Set up with your real data, so you never get handed an empty system.Included
05Tested with the people who'll use it, then a live walkthrough.Included
06A short recorded how-to your team can rewatch.Bonus
07Sixty days of fixes after handover.Bonus
08Your data is always yours, and you get a permanent licence to use and change your system. Nothing locks you in.Included
09Works or your money back.Guarantee
10On time, or 10% off the second payment.Guarantee
11Support and hosting after handover: hosting, backups, monitoring, fixes and an hour of small changes each month. Or I hand it over to run on your own accounts.$149 / month, optional
12Full ownership of the source code, if you need it outright.2× build price
From $2,500, fixed.
Half to start, half when it's working.
Book my free 30-minute call

Things I've built

The volunteer dashboard: orders, run sheets, roster and live Square sales
The public Christmas tree order page for Waverley Valley Scout Group

Pro bono · live now

Christmas tree sales for Waverley Valley Scout Group

Two selling weekends a year, run by volunteers. Customers order online and choose delivery or pickup. Volunteers get run sheets, a delivery map, print-ready tags, a roster and live Square sales on one dashboard.

Drag across the image to see both sides.

Visit the live site

The new grate fitted in place
The original drainage grate, rusted through

Paid job · physical build

Replacement drainage grates for an owners corporation

The old grates had rusted through. I measured them, made the replacements in the workshop and fitted them. Sometimes the fix is software. Sometimes it's steel.

Drag across the image to see before and after.

The Neutrino admin delivery dashboard: active projects, issues, team, due dates and budgets (sample data)
A customer's project page in the Ideas Network platform, showing the quote with design and manufacturing bids (sample data)

My own build · the engine for the Ideas Network

The platform behind the Ideas Network

This is the platform the Ideas Network will run on. A customer describes a job, and it moves through quoting, optional on-site measurement, design review, production, assembly and shipping. I built the backend: the quoting, the payments, maker payouts, the admin tools and the messaging.

Drag across the image to see both sides. Screens from the real code, with sample data.

Every reason to say no, handled

“I don't have time to explain it.”
Thirty minutes, no prep. Just share your screen.
“I'm not technical.”
You never touch code. You show me the problem; I handle the build.
“We've bought software nobody used.”
This is built around how your team already works, set up with your data, with a walkthrough and a recorded how-to.
“What if it doesn't work?”
You see a working sample before you pay anything, and the build works or you get your money back.
“It'll cost a fortune.”
From $2,500, fixed, agreed up front. Half of it only when it's working.
“It'll take months.”
About two weeks, with your handover date agreed in writing. If I'm late, you get 10% off the second payment.
“We'll be locked in.”
Your data is always yours, and you get a permanent licence to use and change your system. Support and hosting is optional; if you'd rather run it yourself, I hand it over to your own accounts. I keep the building blocks I reuse across clients, which is a big part of how I can build it from $2,500.
“Will you rip out the tools we use?”
Only if that's the honest answer. Usually the fastest fix connects what you already have. I'll tell you which on the call.

Still have a question? Ask me on the call. It’s free, and there’s no prep.

Book my free 30-minute call

Works or your money back

You see a working sample before you pay a cent. Once we agree the scope in writing, if what I hand over doesn't do what we agreed, I keep working on it at no extra cost until it does. If I still can't make it work, I refund everything you've paid. This doesn't limit your rights under the Australian Consumer Law.

On-time promise

Your handover date is agreed in writing before I start. If I'm late because of me, you get 10% off the second payment.

It doesn't apply to delays caused by waiting on you for information, access or feedback. Full terms

Mark Lewis, mechatronics engineer and founder of Neutrino, smiling in a navy vest and blue tie

An engineer, not an agency

For seven years I ran an entertainment lighting service department. The deadline was always a truck: if the gear wasn't fixed and loaded, the event had to change its plans. That's where I learned to find the real fault fast and fix it properly.

I trained in robotics and mechatronics engineering, so I look at how a business actually runs: where work comes in, where it gets stuck, where it gets typed twice. Then I find the point where it leaks and build the fix, usually in software and sometimes as a physical part.

I use AI tools to get the first 80% done fast, and you never have to touch them. The last 20% is the hard part. That's where my understanding of your problem and my experience turn it into something that actually works for your team.

12 years
about 7 running an entertainment lighting service department, about 5 as a mechatronics engineer at a hot water systems startup
Engineer
robotics and mechatronics by training
Max 2
builds at once, so your project gets real focus

Bigger than two weeks?

Projects from $10,000 to $30,000

When the fix touches the whole operation, I scope it properly first. It still starts with the free call.

Start with the free call

The Neutrino Ideas Network

An idea goes in. A real product comes out.

The Ideas Network connects people who have an idea with designers and makers, from CAD to machine shops, 3D printing and electronics. It switches on in Melbourne once the founding bench is full.

Makers and designers: join the founding bench

Show me what's not working.

You'll see a working sample before you pay a cent.

Book my free 30-minute call
  • No prep. No tech knowledge. No obligation.
  • No more than two builds at once, so your project gets real focus