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Backend systems that hold up
I build reliable backend platforms using C#, ASP.NET, MySQL/MariaDB and practical architecture that can support real operational load.
Software Developer · API Architect · Product Builder
Hi, I’m Mark Turner.
I design and build serious software: high-volume backend systems, clean APIs, practical automation, beautiful dashboards, and workflow products that solve real business problems.
My strength is taking a complicated process, stripping away the noise, and turning it into a system that is fast, reliable, useful, and easy for people to work with.
Calm engineering for messy business problems.
I’m at my best where software has to be dependable, understandable, and commercially useful. I care about the database, the API, the interface, the user journey, the edge cases, and the business reason behind it all.
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APIs that make sense
I design RESTful APIs, integrations and developer-facing services that are straightforward to consume, secure, and easy to extend.
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Dashboards people actually use
I create clean admin portals and reporting screens that help teams monitor activity, understand performance, and make better decisions.
What I build.
My work sits at the intersection of software engineering, product thinking and operational problem-solving. I like building things that finish the job, not just things that look impressive in a demo.
Jill.chat
A conversational workflow and document-signing platform designed to collect structured information, capture rich media, generate and merge PDFs, apply signatures, and provide verification through QR codes, hashes and audit metadata.
myapi.rest
A developer-focused API suite concept built around useful, specialised services such as URL shortening, QR/barcode generation, media handling, storage utilities and practical automation APIs.
High-volume transactional systems
I have led and maintained systems in the financial and messaging space that process large volumes of transactions, where reliability, clarity and monitoring matter every day.
Custom business software
From ecommerce platforms and admin dashboards to document builders, workflow tools and internal automation, I build software around the way a business actually works.
Core strengths.
I’m technical enough to go deep, practical enough to ship, and experienced enough to know that simple, maintainable systems usually win.
Technical toolkit
C#
ASP.NET
.NET Core
.NET 8
.NET Framework
REST APIs
MySQL
MariaDB
JavaScript
HTML/CSS
IIS
Windows VPS
PDF generation
Webhooks
Dashboards
Integrations
How I work
Clear thinking
Product ownership
Business understanding
Practical architecture
Fast problem-solving
Reliable delivery
Creative UI thinking
Calm under pressure
Experience
Lead developer and CTO-level technical operator
I’ve been responsible for systems that businesses depend on daily, leading a small team while still staying close to the code, architecture and production reality.
Founder
Builder of independent products and platforms
I’m actively creating products such as Jill.chat, GoHub and myapi.rest — not as theoretical ideas, but as working platforms with real-world commercial potential.
Creative
Engineer with a maker’s eye
Outside of software, I’m drawn to craft, design, woodworking and visual problem-solving. That creative side shows up in the way I design interfaces and shape products.
“I don’t just write code. I build systems that help people complete important work with less friction, more confidence and better proof.”
— Mark TurnerNeed a serious system built properly?
I’m available for selected consulting, backend/API development, dashboard builds, document workflow projects, system integrations and product architecture work.