Senior Financial Accountant

Senior Financial Accountant

London Full-Time 52000 - 78000 £ / year (est.) No home office possible
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At a Glance

  • Tasks: Lead financial accounting, oversee month-end close, and manage complex contracts.
  • Company: Join ISS UK Ltd, a global leader in workplace and facility management.
  • Benefits: Enjoy career development, a supportive team, and the chance to make a real impact.
  • Why this job: Thrive in a fast-paced environment where your expertise shapes financial integrity and drives innovation.
  • Qualifications: Must be a fully qualified accountant with strong technical and commercial skills.
  • Other info: Diversity and inclusion are core values at ISS; all backgrounds are welcome.

The predicted salary is between 52000 - 78000 £ per year.

Shape strategic finance with precision, insight, and leadership.

ISS UK Ltd is seeking a technically strong and commercially aware Senior Financial Accountant to join our UK & Ireland Controlling function. This is a critical position for a fully qualified accountant with experience across technical reporting, financial controls, and team leadership — someone who can confidently navigate complex portfolios, support decision-making, and drive operational excellence.

If you thrive in a fast-paced, high-accountability environment where your technical knowledge and leadership make a visible impact — this is the role for you.

What You’ll Be Doing

This role blends rigorous technical accounting with hands-on leadership and cross-functional collaboration. You’ll oversee a portfolio of intricate contracts, manage the financial month-end close, and support strategic reporting with accurate, timely data.

From spearheading corporate consolidations to addressing audit queries and leading budgeting cycles — you’ll play a key role in shaping financial integrity and supporting the wider business with insight and control.

Key Responsibilities

  • Skillfully orchestrate month-end close procedures to ensure seamless, timely financial closure
  • Conduct detailed P&L and balance sheet reviews, providing clear insight to support strategic decision-making
  • Manage and nurture a portfolio of complex customer contracts, ensuring financial accuracy and control
  • Support and coordinate statutory and group reporting under IFRS and UK GAAP
  • Lead and support the coordination of internal and external audits, including addressing audit queries with precision
  • Contribute to corporate consolidation and group-level submissions within the central finance team
  • Drive forecasting, budgeting, and variance analysis processes across multiple business units
  • Apply in-depth knowledge of project accounting to support accurate revenue and cost recognition
  • Evaluate and challenge existing financial processes to drive transformation, simplification, and standardisation
  • Lead and develop junior team members, fostering a culture of high performance and continuous improvement
  • Act as a trusted business partner, balancing technical compliance with commercial pragmatism

What We’re Looking For

  • Fully qualified accountant (ACCA, ACA, CIMA) – essential
  • Strong technical accounting expertise, including solid understanding of IFRS, UK GAAP, and financial control frameworks
  • Proven experience in financial accounting, audit readiness, and supporting consolidations in a complex organisation
  • Strong commercial acumen with the ability to interpret numbers and communicate insight to stakeholders
  • Excellent Excel skills and familiarity with large ERP systems (e.g. SAP, Oracle, NetSuite)
  • Confident and proactive communicator with a continuous improvement mindset
  • Track record of process optimisation and experience working across cross-functional projects

Why Work for ISS?

ISS is a global leader in workplace and facility management. We connect people and places to make the world work better — from airports and hospitals to innovation hubs and global head offices.

Join a finance team where technical excellence meets business partnership. You’ll be supported, empowered, and given space to lead, challenge, and innovate.

We offer:

  • The opportunity to lead in a technically demanding and commercially relevant role
  • A collaborative, supportive team environment with career development opportunities
  • A chance to make a real impact on process, control, and performance in a global business

Diversity and Inclusion at ISS

ISS is proud to be an inclusive employer. We welcome applications from all backgrounds and experiences. We are committed to creating a workplace where everyone feels respected, supported, and empowered to thrive.

Seniority level

  • Seniority level

    Mid-Senior level

Employment type

  • Employment type

    Full-time

Job function

  • Job function

    Finance

  • Industries

    Facilities Services

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Senior Financial Accountant employer: ISS Facility Services UK

At ISS UK Ltd, we pride ourselves on being an exceptional employer that fosters a culture of collaboration and continuous improvement. As a Senior Financial Accountant, you will not only lead in a technically demanding role but also have the opportunity to make a significant impact within a supportive team environment, all while enjoying career development opportunities in the vibrant city of London. Join us to connect people and places, and thrive in a workplace where your expertise is valued and your growth is encouraged.
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Contact Detail:

ISS Facility Services UK Recruiting Team

StudySmarter Expert Advice 🤫

We think this is how you could land Senior Financial Accountant

✨Tip Number 1

Familiarise yourself with ISS UK Ltd's financial practices and values. Understanding their approach to workplace and facility management will help you align your experience with their needs, showcasing how you can contribute to their strategic goals.

✨Tip Number 2

Network with current or former employees of ISS to gain insights into the company culture and expectations for the Senior Financial Accountant role. This can provide you with valuable information that you can use to tailor your discussions during interviews.

✨Tip Number 3

Prepare to discuss specific examples of how you've led teams and optimised financial processes in previous roles. Highlighting your leadership skills and ability to drive transformation will resonate well with the hiring team.

✨Tip Number 4

Stay updated on the latest developments in IFRS and UK GAAP, as well as trends in financial accounting. Being able to speak knowledgeably about these topics will demonstrate your commitment to continuous improvement and technical excellence.

We think you need these skills to ace Senior Financial Accountant

Technical Accounting Expertise
IFRS Knowledge
UK GAAP Understanding
Financial Control Frameworks
Financial Month-End Close Management
P&L and Balance Sheet Review
Statutory and Group Reporting Coordination
Audit Readiness
Corporate Consolidation Experience
Forecasting and Budgeting Skills
Variance Analysis
Project Accounting Knowledge
Process Optimisation
Cross-Functional Collaboration
Leadership and Team Development
Excellent Excel Skills
Familiarity with ERP Systems (e.g. SAP, Oracle, NetSuite)
Strong Commercial Acumen
Proactive Communication Skills
Continuous Improvement Mindset

Some tips for your application 🫡

Tailor Your CV: Make sure your CV highlights your qualifications as a fully qualified accountant and showcases your experience in technical reporting, financial controls, and team leadership. Use specific examples that demonstrate your ability to manage complex portfolios and support decision-making.

Craft a Compelling Cover Letter: In your cover letter, express your enthusiasm for the role and the company. Highlight your strong technical accounting expertise and your understanding of IFRS and UK GAAP. Mention how your commercial acumen can contribute to the company's success.

Showcase Relevant Skills: Emphasise your excellent Excel skills and familiarity with large ERP systems like SAP or Oracle. Provide examples of how you've optimised processes or led cross-functional projects in previous roles to demonstrate your proactive approach.

Prepare for Potential Questions: Anticipate questions related to your experience with month-end close procedures, audit readiness, and financial reporting. Be ready to discuss how you've contributed to corporate consolidations and managed complex customer contracts in the past.

How to prepare for a job interview at ISS Facility Services UK

✨Showcase Your Technical Expertise

As a Senior Financial Accountant, it's crucial to demonstrate your strong technical accounting skills. Be prepared to discuss your experience with IFRS and UK GAAP, and provide examples of how you've applied these standards in previous roles.

✨Prepare for Scenario-Based Questions

Expect questions that assess your problem-solving abilities in complex financial situations. Think of specific instances where you managed month-end closures or addressed audit queries, and be ready to explain your thought process and outcomes.

✨Highlight Leadership Experience

This role requires hands-on leadership, so be sure to share your experiences in leading teams or projects. Discuss how you've developed junior team members and fostered a culture of high performance and continuous improvement.

✨Demonstrate Commercial Acumen

Your ability to interpret financial data and communicate insights is key. Prepare to discuss how you've used financial analysis to support strategic decision-making and how you've balanced technical compliance with commercial pragmatism.

Senior Financial Accountant
ISS Facility Services UK
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