About three25


Christian McMahon FBCS CITP founded three25 to provide his services as a Customer Centric Multi-Sector CIO / CDIO | Transformation Leadership | Business Strategist | Board & Venture Advisor | Non-Exec Director with a notable track record of success in both a permanent and interim capacity at board level.

He is highly skilled in guiding organisations through the necessary changes for securing the maximum value from technology investments.

Christian has first class delivery credentials on a global scale including:
▸ Board Advisory: IT strategy/investment/capability reviews and providing unbiased insights/ideas
▸ Turnaround of “troubled” projects, crisis management and interim IT leadership roles
▸ Devising and executing digitally aligned business strategies and operating models
▸ Transformation programmes: cultural change, rationalisation, restructuring and consolidation activities
▸ Full M&A lifecycle: Due diligence, integration planning and value realisation
▸ Product strategy and innovation: growing the digital capability of products and services
▸ Infrastructure consolidation: legacy rationalisation, re-platforming and move to cloud (AWS, Azure, GCP)
▸ Vendor management, negotiation and sourcing
▸ Data Transformation: Exploiting big data for meaningful insights and to de-risk decision making
▸ Using Power BI to help orgs discover, understand and act faster on opportunities buried in their data
▸ Software Development: DevOps, SDLC, Agile, API, Mobile Payments, AI, ML, Blockchain
▸ Start-Ups: Mentoring and collaborative innovation
▸ Member of Technology Panel for €5b European Commission VC Fund

He has an exceptional knowledge of current/emerging technology and is able to deliver fully secure solutions that build new customer experiences, enable competitive advantage, solve business critical issues, maximise efficiency and enable more effective ways of working.

One of Christians key strengths is the ability to adapt and translate technical matters for non-technical audiences and is very comfortable in engaging with customers in getting feedback and using this to improve products. He is an engaging blend of commercial acumen, highly developed interpersonal skills and cultural dexterity, skilled in leading globally dispersed teams and building collaborative relationships in matrix organisations across diverse stakeholders and geographies.

Christian is a Non-Executive Director of ITSO Ltd where we have built the ITSO on Mobile (IoM) smart ticketing product in partnership with Google that allows Train, Bus and Tram Operating Companies to fulfil tickets through Google Pay direct to their phone. We plan to extend IoM beyond Google Pay to include all popular native digital wallets during 2023/24.

He is a highly respected CIO/CTO and Digital ‘thought leader’ with significant social influence who has forged strong relationships with the worlds leading firms, advising them on shaping their marketing, technology, product and digital strategies to better engage with and add value to their clients.


Hired by LSL Properties plc – generated £45 billion of mortgage completions in 2022:
• Operated mainly in the Financial Services Division that generated £45 billion of annual mortgage completions in 2022 – this represents approximately 10% of the total UK purchase and remortgage market with around 2,900 financial advisers
• Reviewed group IT functions including current capability, strategy, sourcing, systems, resource, ops
• Board level advisory services on technology strategy & roadmap including new IT Operating Model
• Led full technology M&A lifecycle including integration for a major acquisition & new digital assets
• Managed RFP & re-platforming of infrastructure to Amazon AWS with fully managed security service
• Procured new operating platform; led gap analysis & specified dev plan to make it fit for purpose
• Managed the software development programme & reengineering of the newly acquired platform
• Led client side requirements gathering including presentations, workshops & ongoing interaction
• Drove commercial discussions with leading industry vendors & clients on platform integration
• Built suite of API’s that allows platform integration with vendor platforms & client operational systems

Hired by Countryside Partnerships plc to deliver a group wide business transformation including core systems replacement, technology modernisation and business process change:

Responsible for the people and strategic direction of the whole change portfolio, with key focus on delivery assurance, governance framework and being the main driver of the transformation to the plc board and business leaders.

A key component of modernising the IT estate was migrating to MS Dynamics 365:
– Finance & Supply Chain Management implemented Nov 21 within 18 months fully remotely during Covid
– ERP Manufacturing implemented Jun 21
– Informatica IICS platform delivering reliable business-critical data to D365 through system integrations with our ODS implemented Nov 21
– CE Sales/Marketing/Customer Service 1st phase implemented Nov 22

Other delivered projects & strategies continuously improved were:

– Data strategy that converts data from a docile liability into a business asset including better understanding our data landscape & utilising it as a capability to drive change
– Manufacturing digital transformation: Simpler house type designs, faster erection times onsite & reduced fees
– Xpedeon ERP platform for materials procurement, contract management & CVRs
– Integrating previously acquired businesses
– Power BI reporting
– Zero trust cyber-security approach & threat detection
– Anaplan: Planning, “what-if” scenario modelling, development appraisals, forecasting and consolidation
– Moved IT infrastructure to externally hosted environment – robust scalability, full DR wrapper & reduced risk profile
– New QA platform: Improved subcontractor/defect management & increased visibility/analytics
– RingCentral implementation across all offices/sites
– Portal providing real time tracking & input of ESG data
– New legal software across the group
– New WAN provider across all offices/sites

All projects were driven by an IT PMO with a robust governance wrapper to better manage projects & reporting required to implement solutions to achieve intended business outcomes.

We can help you right now – info@three25.com


E-mail: christian@three25.com | Mobile: +44 (0)7775 826808 | Twitter: @christianmcm

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