Senior Accountant at Omnicom in London, London, United Kingdom

Senior Accountant

Location: London, London, United Kingdom · Hybrid

Agency:

Flywheel

Job Function:

Finance

Job Subfunction:

Financial Accounting and Controlling

Job Description:

About Flywheel

Flywheel’s suite of digital commerce solutions accelerate growth across all major digital marketplaces for the world’s leading brands. We give clients access to near real-time performance measurement and improve sales, share, and profit. With teams across the Americas, Europe and APAC, we offer a career with real impact, endless growth opportunities and the support you need to be the best you can be.

The Opportunity

Join the Financial Reporting team and play a key role in supporting the company's financial close and reporting processes. This position provides exposure to a broad range of accounting responsibilities, including general ledger accounting, balance sheet reconciliations, payroll accounting, intercompany transactions, cash management, and audit support. The successful candidate will act as trusted finance partner with cross-functional teams to help ensure accurate financial reporting while contributing to process improvements and maintaining a strong control environment.

What You Will Do:

• Prepare recurring and general month-end journal entries with proper support; ensure accuracy and timely submission within tight close timelines.
• Reconcile assigned balance sheet accounts monthly, maintain audit-ready documentation, and promptly resolve reconciling items.
• Support with the full month-end, quarter-end and year-end financial close process ensuring accuracy, completeness and timeliness.
• Analyse general ledger activity to identify unusual transactions, trends, and variances.
• Prepare accruals, prepaid expense, accrued & deferred revenue, lease accounting and fixed asset entries and related reconciliations.
• Support with payroll accounting & reporting and related reconciliations, including reconciliation of payroll schedules and related balance sheet accounts.
• Support intercompany accounting activities, including reconciliations, settlements, and billing requests.
• Support VAT returns activities, including reconciliations ensuring compliance with HMRC regulations.
• Assist with cash postings, bank reconciliations, and cash account analysis.
• Support preparation and review of management accounts, variance analysis, and commentary for local and Group leadership.
• Prepare supporting schedules for financial reporting and management requests.
• Support external statutory financial statement audits (FRS), internal audits, and Sarbanes-Oxley (SOX) compliance activities by preparing schedules, supporting documentation, and responding to auditor requests.
• Support annual/quarterly compliance filings with relevant regulatory bodies.
• Ensure all accounting records are complete, accurate, and maintained in accordance with company policies and local GAAP and Group reporting requirements.
• Identify opportunities to improve accounting processes and implement efficiencies.
• Support special projects, system implementations, and ad hoc financial analyses as assigned.

Who You Are:

• Bachelor’s degree in Accounting or Finance.
• 5+ years of accounting experience.
• Strong technical accounting knowledge (UK GAAP/IFRS; familiarity with Irish statutory requirements advantageous).
• Experience with general ledger accounting and month-end close.
• Proficiency in Microsoft Excel, including PivotTables, LOOKUPs, SUMIFS, etc.
• Strong analytical, organizational, and problem-solving skills.
• Excellent attention to detail and ability to meet deadlines.
• Strong written and verbal communication skills.
• Ability to work independently and as part of team, positively contributing to a team culture of accountability and continuous improvement.
• Professional accounting qualification (ACA, CIMA, ACCA or equivalent) .
• Experience with SAP, ideally SAP S/4HANA, preferred.
• Experience operating within a multinational or Group reporting structure strongly preferred.





Omnicom’s policy requires employees to work in the office for a minimum of three days a week, unless additional in-office days are directed by their agency or manager. Our objective is to increase this requirement over time, and many of our agencies as well as Omnicom’s corporate group already require five days of in-office attendance.

Omnicom is committed to hiring and developing exceptional talent. We agree that talent is uniquely distributed, and we’re focused on developing inclusive teams that can bring the best solutions to everything we do. We strongly believe that celebrating what makes us different makes us better together. Join us—we look forward to getting to know you. We will process your personal data in accordance with our Recruitment Privacy Notice.

Link to Recruitment Privacy Notice: https://www.omc.com/privacy-notice/