Solution architecture.
Delivery leadership.
Hands-on engineering.
Cross-disciplinary IT consultancy for complex programmes across public and private sector clients.
Built to close the gap between design and delivery
Most architecture work stops at sign-off. Callaghan IT Services takes solutions through to operational adoption — across architecture, engineering, programme management, and the spaces between.
Architecture
Networks, identity, ERP platforms, cloud, integration. End-to-end solution design with the full set of artefacts.
Delivery
Programme leadership, supplier coordination, hands-on engineering through migration weekends and cutover events.
Adoption
Training, runbooks, governance, operational handover. Designs that get used, not designs that get filed.
A track record of complex delivery
Modern deployed IT platform for the Ministry of Defence
Designed and costed multiple infrastructure solutions for a deployed forces IT replacement programme across multiple security classifications. Programme received commendation from a 3-star Lieutenant General.
Architecture & Design · Networks & Infrastructure
Network simplification programme
Architected and delivered the consolidation of a thirteen-firewall, multi-vendor estate to a single-vendor fabric. Approximately eighty legacy devices retired.
Networks & Infrastructure · Architecture & Design · Programme & Delivery
Change governance transformation and CIR portal
Built the JPD-based front-door portal that replaced fragmented intake. Now in production use as the single front door for change demand across the organisation.
Programme & Delivery · Architecture & Design
A consultancy run by a practitioner
Callaghan IT Services is led by Adam Callaghan, a cross-disciplinary solution architect working in IT since 1997. Operating outside IR35 from a UK limited company.
Read more about how we work →- Years in IT
- 29+
- Clearance
- SC Cleared
- IR35 status
- Outside IR35
- Base
- UK Based, Ltd Co.