About Dajci Advisory
Independent thinking for complex technology.
Dajci Advisory exists for organisations making decisions that are too important to leave entirely to a vendor, product team or slide deck.
We work where business strategy, enterprise architecture, security and delivery meet.
Our approach is deliberately practical.
Understand what already exists.
Understand the business problem.
Identify the constraints.
Challenge the assumptions.
Then design the clearest route forward.
Our Principles
Clarity before complexity.
If senior decision-makers cannot understand the architecture, the architecture has a problem.
Architecture must survive reality.
Budgets exist. Legacy technology exists. Regulation exists. Security exists. Suppliers exist. Organisational politics exists. Useful architecture accounts for all of them.
Independence matters.
Recommendations should serve the organisation making the decision, not the company selling the platform.
Security belongs in the design.
Security introduced after the architecture has been approved becomes friction. Security designed into the architecture becomes part of how it works.
Transformation should remove complexity.
Replacing three legacy systems with six cloud platforms is not automatically progress.
Leave capability behind.
The objective of good advisory work is not to create permanent dependency. It is to leave behind clearer architecture, stronger decision-making and better internal capability.
Founder and Principal Consultant
Jon Dajci
Jon is an enterprise architect and technology advisor with a career spanning hands-on engineering, consulting, cloud architecture, technology leadership, enterprise transformation and AI.
He started in networking and infrastructure engineering before moving through technical consultancy, cloud and system architecture into senior architecture and technology leadership roles.
That engineering background still shapes how he approaches strategy today. He believes senior technology advice works best when the person defining the strategy understands what it takes to build it.
Jon has worked across aviation, banking, wealth management, insurance, education and other complex enterprise environments. His experience ranges from leading technology strategy for the London branch of a global bank to architecture governance across a 70+ application estate and enterprise Microsoft Copilot and agentic AI adoption at British Airways.
Today his work covers:
- AI
- Enterprise Architecture
- Cloud
- Cyber Security
- Transformation
- Technology Strategy
The common thread is helping organisations make difficult technology decisions with greater clarity.
Jon's Approach
Boardroom to architecture diagram.
Jon is comfortable moving between the two conversations that technology organisations often struggle to connect.
The executive conversation
- What are we trying to achieve?
- What will this cost?
- What risk are we accepting?
- What should we stop doing?
The architecture conversation
- How will identity work?
- Where does the data live?
- What integrates with what?
- How is it monitored?
- What happens when it fails?
- Who owns it?
Connecting those conversations is where much of the value sits.
Career Journey
Engineering
Network and infrastructure engineering across enterprise environments.
Consulting
Technical consultancy and business technology transformation.
Architecture
Cloud, Microsoft, security and system architecture.
Technology Leadership
Technology strategy and leadership within financial services.
Enterprise Architecture
Design Authority, transformation governance, application architecture and supplier assurance.
AI
Enterprise Copilot, generative AI and agentic AI architecture and governance.
Education
BSc (Hons), Computer Networks and Communications
University of Westminster
BCS Foundation Certificate
Architecture Concepts and Domains
Professional Qualifications
Additional Microsoft and Cisco professional qualifications.