Sr. Project Manager, Project Management (S3)

The posting

Job Description

Purpose of the job

· The Senior Project Manager will lead the successful delivery of a technology transformation programme, overseeing the migration of a customer-facing technology platform from the existing solution to a third-party supplier platform.

· Acting as Collinson's delivery lead, the role will coordinate business, technology, product, operations and third-party supplier teams to deliver a complex programme involving platform migration, data migration, operational transition, customer onboarding, third-party integrations and service readiness.

· The role will be accountable for programme governance, supplier management, delivery assurance, stakeholder engagement, risk management and successful transition into business-as-usual operations.

· The successful candidate will operate with a high degree of autonomy and will be expected to drive delivery momentum across both Collinson and a third-party suppliers’ team.

Key Responsibilities

Programme Delivery

· Lead the end-to-end delivery of a large-scale business and technology transformation programme.

· Own programme plans, milestones, dependencies, budgets, risks and critical path management.

· Ensure delivery remains within agreed tolerances for scope, budget, timeline and quality.

· Establish and maintain programme governance, reporting and control frameworks.

· Drive successful delivery through multiple workstreams covering technology, operations, product, data and customer migration.

· Manage programme delivery from mobilisation through implementation, hypercare and operational handover.

Supplier & Partner Management

· Act as Collinson's primary delivery interface with a third-party supplier and other strategic suppliers.

· Establish and manage joint delivery governance forums, working groups and steering committees.

· Hold suppliers accountable for agreed deliverables, milestones, acceptance criteria and contractual commitments.

· Challenge delivery plans, estimates, assumptions and dependencies to ensure successful outcomes.

· Monitor supplier performance and drive corrective actions where required.

· Manage commercial implications arising from delivery risks, changes or delays.

Migration & Transition Leadership

· Lead technology, data, customer and operational migration activities.

· Manage migration readiness assessments, cutover planning and hypercare activities.

· Oversee legacy-to-target platform transition and phased customer onboarding waves.

· Coordinate business readiness activities to ensure successful adoption and operational continuity.

· Drive knowledge transfer and transition of operational processes between service teams and suppliers.

· Ensure service continuity throughout all stages of migration.

Operational Change & Service Readiness

· Lead operational transition planning and implementation activities.

· Coordinate service readiness, support model design, operational acceptance and training.

· Ensure new processes, tooling, reporting and operating models are embedded successfully.

· Oversee transition to BAU support teams and operational governance structures.

· Manage stakeholder engagement across technology, operations, customer service and commercial teams.

Design Workshops & Requirements Definition

· Co-facilitate and support cross-functional design and discovery workshops.

· Drive definition of project scope, target operating models, functional requirements and implementation approaches.

· Ensure decisions, assumptions and actions are documented, tracked and governed.

· Coordinate business and technical stakeholders to achieve timely decision-making and scope clarity.

· Support prioritisation and management of requirements throughout delivery.

Governance, Reporting & Stakeholder Management

· Build trusted relationships with sponsors, executives and senior stakeholders.

· Produce high-quality governance materials, steering committee packs and executive reporting.

· Provide transparent reporting on programme health, delivery progress, financial status and risks.

· Escalate issues proactively and recommend mitigation actions.

· Facilitate programme boards, steering committees and supplier governance meetings.

· Drive stakeholder alignment across multiple business functions and geographies

Risk, Dependency & Change Management

· Establish and maintain programme RAID logs.

· Identify and manage programme risks, issues, assumptions and dependencies.

· Lead impact assessments and mitigation planning activities.

· Own change control processes and governance.

· Evaluate delivery, cost, commercial and operational impacts arising from scope changes.

· Ensure key decisions are appropriately documented and approved.

Testing & Implementation

· Coordinate testing strategies including SIT, UAT, migration testing and operational readiness testing.

· Ensure implementation plans and exit criteria are clearly defined and agreed.

· Manage go-live planning, execution and post-implementation support activities.

· Ensure successful transition into operational support and service management structure.

Leadership

· Provide leadership and direction to cross-functional delivery teams operating in both internal and third-party delivery environments.

· Foster a collaborative, delivery-focused culture across internal and supplier teams.

· Promote best-practice project and programme management disciplines across the wider organisation.

Skills and experience required

1. Essential Skills

Delivery Leadership

· Exceptional programme and project management capabilities.

· Strong planning, organisation and execution skills.

· Ability to operate effectively in complex, ambiguous environments.

· Strong critical thinking and structured problem-solving skills.

Stakeholder Management

· Outstanding stakeholder engagement and influencing skills.

· Ability to challenge constructively at executive level.

· Excellent workshop facilitation and decision-making capabilities.

· Ability to communicate effectively across business and technical audiences.

Commercial & Supplier Management

· Strong supplier governance and vendor management experience.

· Ability to manage delivery against Statements of Work and contractual obligations.

· Sound commercial awareness.

· Strong change control and scope management capabilities.

Risk & Governance

· Advanced risk management and dependency management skills.

· Strong governance and reporting discipline.

· Ability to identify emerging risks and drive proactive mitigation.

Communication

· Excellent written and verbal communication.

· Strong executive reporting and presentation skills.

· Ability to simplify complex delivery issues for senior audiences.

2. Essential Experience

· Minimum 8-10 years' experience leading complex technology and business transformation programmes.

· Proven experience delivering large-scale platform migration or SaaS transformation programmes.

· Proven experience managing third-party technology vendors and third-party delivery partners.

· Experience delivering data migration, integration and operational transition programmes.

· Experience managing customer onboarding, migration or deployment activities at scale.

· Experience leading governance, steering committees and executive stakeholder groups.

· Experience working in regulated industries such as Financial Services, Insurance, Travel or Payments.

· Experience managing geographically distributed teams and suppliers.

· Experience operating in both Agile and waterfall delivery environments.

· Strong budget ownership, financial governance and commercial management experience.

3. Desirable Experience

· Experience delivering customer-facing digital platforms.

· Experience within travel disruption, travel technology or travel insurance sectors.

· Experience of customer service or contact centre transitions.

· Experience of cloud migration programmes.

· Experience involving AWS, Azure, API integrations and microservice architectures.

· Experience of international supplier delivery models, particularly international delivery structures.

· Experience supporting programmes involving GDPR, PCI-DSS, ISO27001 or equivalent regulatory requirements.

4. Essential Qualifications

· PRINCE2 Practitioner, PMP, MSP or equivalent programme/project management qualification.

· Agile delivery certification or demonstrable Agile delivery experience.

Measures of Success

Contractor Success Measures

Success in role will be measured against:

• Delivery of agreed programme milestones.
• Achievement of budget, scope and timeline commitments.
• Successful management of supplier performance and delivery outcomes.
• Successful migration and onboarding activities with minimal business disruption.
• Effective operational transition and service readiness.
• Timely risk identification and mitigation.
• Quality of governance and executive reporting.
• Stakeholder satisfaction across Collinson and supplier organisations.
• Successful transition into BAU support and operations.

Reward & Benefits: What's in it for me?

We want our people to feel recognised, supported and able to thrive both at work and beyond it.

We offer a competitive reward package designed to support your financial, physical and mental wellbeing, alongside opportunities to learn, develop and be recognised for the contribution you make. Benefits vary by role and location, and full details will be shared as part of the application process.

Equal opportunities: Our commitment to inclusion

Collinson Group is an equal opportunities employer. We welcome applications from people of all backgrounds, identities and experiences, and believe that different perspectives make our business stronger.