I’m Tony Toker, founder of Aurelica Ltd.

Aurelica helps organisations design and secure safe, reliable, and efficient systems, particularly where operational technology, infrastructure, or safety-critical processes are involved. I bring together engineering discipline, software architecture, and practical security — grounded in real-world constraints, not abstract checklists.

Much of my experience comes from working on large-scale systems in rail, automation, and industrial control, often where legacy equipment meets modern requirements. I’ve also delivered cloud architecture (AWS Certified), application security, and have helped teams get solutions through demanding security reviews and pentests.

My approach is simple where possible — and always focused on maintainable, understandable design.

This site shares examples, insights, and design patterns from that work — both recent and long-standing. If you’re interested in working together or have questions about a particular topic, feel free to get in touch or connect on LinkedIn.