About The Opportunity
Job Type: Permanent
Application Deadline: 20 September 2025
Title
Senior Manager - Performance and Planning
Department
Performance and Planning
Location
UK
Reports To
Associate Director - Performance and Planning
Level
Level 6
We're proud to have been helping our clients build better financial futures for over 50 years. How have we achieved this? By working together - and supporting each other - all over the world. So, join our team and feel like you're part of something bigger.
Our clients come from all walks of life and so do we. We are proud of our inclusive culture and encourage applications from the widest mix of talent, whatever your age, gender, ethnicity, sexual orientation, gender identity, social background and more.
As a flexible employer, we trust our people to perform their role in the way that works best for them, our clients and our business. We are a disability-friendly company and would welcome a conversation with you if you feel you might benefit from any reasonable adjustments to perform to the best of your ability during the recruitment process and beyond.
About Your Team
You'll join a dynamic team driving workforce and capacity planning across ISS, enabling smarter headcount, budget, and performance decisions that shape operational efficiency and strategic transformation.
About Your Role
As part of the Performance and Planning team, you will be responsible for owning and delivering the Workforce Optimisation capability set. This includes gathering requirements for creating and maintaining capacity planning and optimisation, performance analysis, and interactive data visualisations. The role also involves leading a team of 3 based in UK and serving as the team's representative in Europe. We are looking for an individual with a strong passion for data who can use their exceptional consultative, interpersonal, and critical thinking skills to join our team. This position offers significant opportunities and directly contributes to providing insights to ISS leadership, enabling them to make data-driven decisions for both running and changing business initiatives.
About You
Strategic Ownership & Leadership
* Own the full lifecycle of the Active Ops Workforce Optimisation (WFO) tool across ISS, ensuring it is embedded as a core strategic capability for workforce and capacity planning.
* Serve as the senior authority and decision-maker for workforce optimisation, influencing cross-functional priorities and aligning planning efforts with ISS's strategic objectives.
Financial Accountability
* Lead the headcount and budget planning processes with a sharp focus on cost control, proactively identifying and executing savings opportunities to drive financial efficiency.
* Change Leadership & Adoption
* Design and lead the rollout of the WFO tool using robust change management strategies to ensure full adoption, minimise resistance, and embed sustainable behavioural change across teams.
Capability Expansion & Operational Excellence
* Expand and evolve the WFO tool's capabilities to support enterprise-wide transformation, including new business area deployments, process redesign, and operating model innovation.
* Champion continuous improvement, using the tool's insights to drive strategic enhancements and operational excellence.
Benefit Realisation & Performance Measurement
* Lead the Benefit Realisation process, ensuring all outcomes are tracked, quantified, and reported throughout the tool's lifecycle.
* Establish and maintain performance metrics to assess impact against ISS capacity plans and improvement forecasts.
Transformation Enablement
* Provide strategic support during operating model and organisational design changes, embedding workforce optimisation as a critical enabler of transformation.
* Drive cultural and organisational change through data-led leadership, coaching senior stakeholders, and unlocking team potential.
Data-Driven Strategy
* Leverage workforce analytics and people insights to inform strategic decisions and enable transformation at scale.
* Ensure data integrity and relevance in all planning and optimisation efforts.
Governance & Framework Execution
* Maintain and enforce the Benefit Realisation Framework, ensuring consistent and disciplined use of the WFO tool across all change delivery teams.
* Govern capacity planning tools to ensure alignment with strategic forecasts and business unit impact assessments.
Stakeholder Engagement & Communication
* Lead high-impact communications on workforce initiatives, ensuring clarity, alignment, and engagement across ISS.
* Build and maintain a strategic delivery roadmap for the team, aligning planning and performance capabilities with ISS's long-term vision.
Required Experience And Qualifications
* Proven project management experience within multiple business units, with a focus on change management.
* Essential experience in long-term or short-term business planning.
* Required expertise in forecasting, data modelling and PMO experience.
* Experience in developing and managing large data models, working with Data Lake integration.
* Experience in setting and measuring key performance indicators and driving results through them.
* Ability to produce regular management information for a wide range of stakeholders.
* Ability to drive cultural change in resistant areas.
* Experience in creating and maintaining forecast models based on a range of commercial assumptions.
* High level of competence with analytics tools such as Power BI or Tableau.
* Experience in employing Lean Six Sigma tools and providing advice in the Measurement and Analysis of projects to ensure maximum benefit realisation and data capture.
* Proven ability to identify efficiencies across multiple business models.
Feel rewarded
For starters, we'll offer you a comprehensive benefits package. We'll value your wellbeing and support your development. And we'll be as flexible as we can about where and when you work – finding a balance that works for all of us. It's all part of our commitment to making you feel motivated by the work you do and happy to be part of our team. For more about our work, our approach to dynamic working and how you could build your future here, visit
For more about our work, our approach to dynamic working and how you could build your future here, visit