Lead Infrastructure Architect (London Area)

Who we are:

Born digital, UST transforms lives through the power of technology. We walk alongside our clients and partners, embedding innovation and agility into everything they do. We help them create transformative experiences and human-centered solutions for a better world.

UST is a mission-driven group of over 30,000+ practical problem solvers and creative thinkers in over 30+ countries. Our entrepreneurial teams are empowered to innovate, act nimbly, and create a lasting and sustainable impact for our clients, their customers, and the communities in which we live.

With us, you’ll create a boundless impact that transforms your career—and the lives of people across the world.

Visit us at UST.com .

You Are:

A visionary and highly experienced Lead Infrastructure Architect to lead the enterprise-wide technology architecture across all infrastructure domains.

With over 20+ years of proven expertise, the ideal candidate will shape the strategy, design, and transformation of complex infrastructure landscapes—including Wintel, Linux, Network, Voice, Collaboration, Mobility, Observability, End-User Computing, End-User Services, and Service Desk.

This role acts as a key advisor to senior leadership and ensures that infrastructure investments align with organizational goals, operational resilience, scalability, and innovation.

The Opportunity :

Key Responsibilities:

• Define and lead the end-to-end infrastructure architecture strategy for enterprise systems, ensuring alignment with digital transformation goals.
• Design scalable, secure, and high-performing solutions across multiple domains:
• Wintel & Linux platforms
• Network (LAN/WAN/SD-WAN, Wireless, Firewalls)
• Unified Communication/Voice/Collaboration (Cisco, MS Teams)
• Mobility & Endpoint Management (Intune, MDM/UEM)
• Observability and Monitoring (ELK, Prometheus, AppDynamics, etc.)
• End-User Computing (VDI, physical endpoints, OS lifecycle)
• End-User Services and Service Desk (ITSM, automation, FCR, CSAT)
• Serve as a trusted advisor to business and IT executives, translating business requirements into future-ready technical solutions.
• Lead the architecture governance process and ensure adherence to enterprise standards and regulatory frameworks.
• Guide infrastructure modernization efforts (cloud adoption, automation, containerization, Zero Trust, SASE, etc.).
• Evaluate emerging technologies and provide recommendations for adoption or piloting.
• Collaborate with delivery, engineering, security, DevOps, and application teams to ensure cohesive solutions.
• Create blueprints, reference architectures, and roadmaps for transformation initiatives.
• Review RFPs/RFIs and support pre-sales and solutioning efforts for large-scale deals.
• Mentor a team of architects and senior engineers across domains, fostering knowledge sharing and architectural excellence

What you need :

• Bachelors or Master’s degree in Computer Science, Engineering, or related field.
• 20+ years of experience in IT Infrastructure and Architecture, with deep, hands-on exposure across all major domains.
• Proven track record in designing and delivering enterprise-grade infrastructure architectures at scale.
• Strong knowledge of ITSM, ITIL, and service management practices.
• Expertise in both traditional data center and cloud-native infrastructures (AWS, Azure, Hybrid Cloud).
• Excellent communication, leadership, and stakeholder management skills.
• Deep understanding of security frameworks, DR/BCP planning, and compliance mandates (ISO, NIST, etc.).
• Preferred Certifications: TOGAF or equivalent Enterprise Architecture certification.
• ITIL Expert / Foundation v4 • Microsoft, Cisco, VMware, or Red Hat advanced certifications. • Cloud Architect Certifications (AWS Solution Architect Professional, Azure Solutions Architect Expert).

What we believe :

We’re proud to embrace the same values that have shaped UST since the beginning. Since day one, we’ve been building enduring relationships and a culture of integrity. And today, it's those same values that are inspiring us to encourage innovation from everyone, to champion diversity and inclusion, and to place people at the center of everything we do.

Humility:

We will listen, learn, be empathetic and help selflessly in our interactions with everyone.

Humanity:

Through business, we will better the lives of those less fortunate than ourselves.

Integrity:

We honor our commitments and act with responsibility in all our relationships.

Equal Employment Opportunity Statement

UST is an Equal Opportunity Employer.

All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, or status as a protected veteran.

UST reserves the right to periodically redefine your roles and responsibilities based on the requirements of the organization and/or your performance.