Senior consultant · Sweden / Europe / Remote

Product engineer for connected machines, payment systems and field-ready platforms.

I help companies build, rescue and scale products where hardware, software, payments and real-world users collide. I am most useful when the system has sensors, motors, databases, transactions, dashboards, support pressure and no single person currently sees the whole thing.

Embedded LinuxRaspberry PiStripe ConnectSaaS dashboardsMechatronicsBLE / QR flowsField diagnosticsPayment architecture
90+commercial payment and range systems sold in the UK
400M+balls dispensed through systems I helped create
£35M+processed for customers through range payment infrastructure
70k+registered app users in the ecosystem
Portrait of :mike graham in a tech-inspired setting
Embedded · SaaS · Payments
Cross-discipline consultant for technical products that have to survive contact with customers, machines and money.
Recruiter summary

Useful where normal job titles break down.

I am not just a software developer, not just a product person and not just a hardware tinkerer. The value is the overlap: translating business risk into architecture, architecture into working code, and working code into systems that can be supported in the field.

Best fitFounder-led companies, hardware-enabled SaaS, payment platforms, automation, connected devices and technical rescue work.
Commercial mindsetI care about uptime, support load, onboarding, transaction failure, operator behaviour and whether the system makes or saves money.
Engagement styleTechnical audit, rescue sprint, prototype-to-production build, fractional product engineering or architecture review.

Skills that matter when the stack crosses physical and digital reality.

My strongest work happens where disciplines overlap: embedded Linux, payment flows, mobile apps, machine control, databases, reporting, customer accounts and field support. I can move between the boardroom, the codebase and the machine cabinet without needing a translator.

Product engineering

From concept to field hardware

Mechanical thinking, electronics, sensor logic, motor control, Raspberry Pi/Linux builds, kiosk displays, QR readers, relays, service tools and production realities.

Payment systems

Stripe, accounts and transaction logic

Stripe Connect, Payment Intents, app payments, connected accounts, commission logic, reconciliation, secure customer journeys and operational monitoring.

Software platforms

Backend portals and data systems

Python, PHP, LAMP, WordPress plugins, MySQL, SQLite, REST APIs, cloud storage, reporting dashboards, scheduled jobs and field diagnostics.

Mobile and BLE

Apps that talk to machines

iOS, Android, BLE GATT, QR-based workflows, app localisation, customer credit systems and practical operator/user journeys.

Automation

Golf range and vending systems

Ball dispensing, credit logic, machine monitoring, payment terminals, dispenser control, usage logs, recovery scripts and remote diagnostics.

Human systems

Clear thinking under messy conditions

I translate between owners, developers, technicians and customers. That is usually where projects either become useful or quietly die.

How I operate.

Head hunters and clients do not need generic adjectives. They need a signal about behaviour under pressure.

Systems-minded

I instinctively look for the mechanism underneath the visible problem. Machines, data, money flow, user behaviour and support pressure are usually one connected system.

Hands-on

I do not stop at architecture diagrams. I write the code, inspect the logs, test the hardware, debug the field unit and improve the customer-facing process.

Inventive but pragmatic

I like ambitious products, but I respect boring reliability. The thing has to work when a wet, impatient customer is standing in front of it on a Saturday morning.

Service driven

I build systems that reduce friction for real people. Operators need visibility. Customers need a clean experience. Technicians need diagnosable behaviour.

High-value consulting engagements.

I am a good fit when the problem is commercially important, technically mixed and too expensive to keep guessing at.

Audit

Find the real risk

Review a product, payment architecture, machine control stack or deployment process and identify the failure points before they become expensive.

Build

Prototype to production

Turn an idea into a working system: hardware behaviour, backend logic, user flow, deployment process, logs and diagnostics.

Rescue

Stabilise what already exists

Untangle fragile scripts, unreliable machines, broken payment flows, poor observability or undocumented systems already in the field.

Available for selective consulting

Need someone who can see the whole machine?

Send the problem, what exists, what is failing, and what outcome would matter commercially. I am based in Sweden and work across Scandinavia, Europe and remotely.

Email: me@mikegraham.infp
Search terms: product engineer Sweden, payment systems consultant, Stripe Connect consultant, embedded Linux consultant, Raspberry Pi consultant, mechatronics consultant, golf range automation consultant.
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