I am Daniel Miara – founder of 3D Studio Production, OpenCart consultant, and payment integration architect. I began as a 3D designer, but clients quickly needed functional ecommerce solutions, so I built a studio that combines creativity with reliable engineering.

Career snapshot

2001: I launched 3D Studio Production, producing LightWave 3D assets. Hardware limitations pushed me toward web development, yet the brand stayed to remind me of our roots.

2003–2005: I taught myself HTML and CSS, designing dozens of websites and templates for agencies that needed a dependable freelancer.

2005–2007: Discovering Mambo/Joomla opened the door to PHP and MySQL. I started auditing extensions, fixing security issues, and building new modules tailored to Polish and UK merchants.

2004 onwards: I released the GaduGadu module followed by a series of VirtueMart and Joomla extensions, including the first payment integration that evolved from Płatności.pl into PayU.

2010: I fell in love with OpenCart, authored hundreds of payment and logistics modules (PayU, Worldpay, First Data, Bambora, Barclaycard, Global Payments, Tpay), and have since launched or rescued stores for brands in Poland, the UK, and beyond.

Need an experienced OpenCart administrator or developer?

I support stores that require clean upgrades, bespoke extensions, CRO tweaks, and payment compliance reviews. I do not take on Journal theme rebuilds, but all other OpenCart flavours are welcome.

Availability is limited, so I cannot accept every project. Send me the brief and timeline and I will confirm whether I can deliver it personally or via my team.

I run OpenCart store administration, development, and incident response services.

2019: JustPayFor.com – a virtual terminal that allows you to generate payment links in seconds and choose any payment gateway.

2022: Craft For Sale - I started building (craftforsale.uk) – a marketplace for craftsmen and designers, with plans for international expansion.

2025: JustPayFor.com - I refreshed the look and functionality.

I created a sister project JustPayFor under the domain Koszyki24.pl dedicated exclusively to clients from Poland.

JustPayFor.com and Koszyki24.pl are free platforms - I encourage you to register an account.

I always invite potential partners to verify references, speak to long-term clients, or review public code. Independent reviews on Facebook or Google are easy to double-check — message the reviewer and ask about their project, they are usually happy to share details.

Portfolios only show the surface. Every brief has different KPIs, brand guidelines, or integrations, so screenshots rarely convey the complexity underneath. Instead, we talk through your processes, so we can propose a roadmap that respects your current tooling and future ambitions.