DV Cleared Senior Service Architect

Experis; Southampton; On-site; GBP 75,000 - 125,000; Full time

Job summary

Experis is seeking a DV Cleared Senior Service Architect to join a high‑profile programme delivering critical services in a secure environment. You will define and deliver service design artefacts to support successful acceptance and long‑term delivery.

You will work with stakeholders, project teams and technical architects to ensure scalable, compliant service solutions aligned with customer requirements, and you will apply ITIL, ISO 20000, PRINCE2 and SIAM practices throughout the life cycle.

Qualifications

• Strong knowledge of ITIL, ISO 20000, and service management best practices.
• Detailed understanding of ITIL processes, ITSM platforms and tooling, and Enterprise Management tooling.
• Experience designing and implementing service management solutions within complex environments.
• Knowledge of PRINCE2 and Agile project delivery methodologies.
• Experience with UML and BPMN modelling techniques.
• Understanding of SIAM operating models.
• Experience in requirements mapping and compliance assessment.
• Commercial awareness with exposure to SoW and project schedules.
• Strong stakeholder management and cross-functional collaboration.

Responsibilities

• Provide service design direction based on customer requirements and outcomes.
• Produce high-quality service design documentation (HLDs, BPMN, compliance statements).
• Conduct Service Management impact assessments for solutions.
• Facilitate service readiness activities for live transition.
• Lead service transition and service exit management.
• Support through-life management of services and technologies.
• Review peers' service design collateral and provide feedback.
• Identify and escalate risks and issues to the Domain Lead.
• Collaborate with Solution Owners and tech teams to ensure stability and efficiency.
• Contribute to Testing and Security disciplines.

Skills

ITIL & ISO 20000

ITIL processes

ITSM platforms

Enterprise management tooling

Service design

PRINCE2

Agile

UML

BPMN

SIAM

Requirements mapping

Compliance assessment

Stakeholder management

Job description

DV Cleared Senior Service Architect

Location: Basingstoke (Onsite)

Rate: Up to £675 per day (via approved umbrella company)

Contract Length: Until 31st May 2027, with potential extension

Security Clearance: Active DV Clearance Required

We are seeking an experienced DV Cleared Senior Service Architect to join a high-profile programme delivering critical services within a secure environment. This role requires a strong background in both service management and technology, with responsibility for defining and delivering service design artefacts that support successful operational acceptance and long-term service delivery.

The successful candidate will work closely with stakeholders, project teams, and technical architects to ensure that service solutions are scalable, supportable, compliant, and aligned with customer requirements.

Key Responsibilities

• Provide service design direction and guidance based on customer requirements and desired outcomes.
• Produce high-quality service design documentation, including:
  • High Level Designs (HLDs)
  • BPMN process models
  • Compliance statements
  • Operational processes and procedures
• Undertake Service Management impact assessments for service and technology solutions.
• Facilitate service readiness activities to ensure a smooth transition into live operation.
• Perform service transition and service exit management activities.
• Support the through-life management of services and technologies.
• Review service design collateral produced by peers and provide constructive feedback.
• Identify, manage, and elevate risks and issues to the Domain Lead where appropriate.
• Collaborate with Solution Owners and technical teams to influence overall solution design, ensuring operational stability and service efficiency.
• Contribute to related disciplines, including Testing and Security.

Essential Skills & Experience

• Strong knowledge of ITIL, ISO 20000, and service management best practices.
• Detailed understanding of:
  • ITIL processes
  • ITSM platforms and tooling
  • Enterprise Management tooling
• Experience designing and implementing service management solutions within complex environments.
• Knowledge of programme and project delivery methodologies, including:
  • PRINCE2
  • Agile
• Experience with process and architecture modelling techniques such as:
  • UML
  • BPMN
• Understanding of SIAM (Service Integration and Management) operating models.
• Experience in requirements mapping and compliance assessment.
• Commercial awareness with exposure to Statements of Work (SoW) and project schedules.
• Strong stakeholder management and communication skills.
• Ability to work effectively across technical, operational, and programme teams.

Desirable Experience

• Experience working within highly secure government or defence environments.
• Understanding of service transition, operational acceptance, and service assurance processes.
• Knowledge of security and testing considerations within enterprise service architectures.

Why Apply?

This is an excellent opportunity to work on a long‑term, high-impact programme where you will play a key role in shaping service design and operational readiness within a critical secure environment. Please note: Active DV Clearance is essential for this position and must be held at the time of application.