Treasury Manager | Iconic Design Practice | London / Hybrid

Harmonic are delighted to be working with one of the world's most recognised design consultancies in their search for a Treasury Manager. This is a broad and varied role sitting at the heart of the finance function, within a business working on landmark projects across the world.

You will take ownership of three of the most business‐critical areas in the team: managing key banking relationships, leading cash flow management in close collaboration with senior stakeholders, and overseeing payroll operations for a complex, international business. The combination of treasury, banking, and payroll in a single role offers real breadth and variety day to day.

The Client: Our client is an internationally recognised design business with work spanning cultural institutions, public realm, commercial developments, and technology‐led projects across the globe. The business highly values diverse ways of thinking and sees finance as a strategic partner to the wider business and Board of Directors. This is an all‐rounder role, ideal for a methodical, detail‐oriented professional who enjoys taking ownership, working collaboratively across functions, and ensuring best‐in‐class treasury and payroll operations within a creative environment.

The Role: This position sits within a high‐performing finance team of 10, reporting into the Head of Finance. You will take primary ownership of treasury, cash management, and banking across a multi‐currency, multi‐entity group, while also overseeing payroll operations for a global employee base in coordination with external providers.

Treasury and banking account for approximately 60% of the role, with payroll oversight making up the remaining 40%. The role requires someone comfortable working independently and building trusted relationships with banks, stakeholders, and external advisors, while also partnering closely with HR and Accounts Payable on the payroll and payments side.

The ideal candidate will thrive in a creative, international environment and take pride in delivering accurate, timely treasury and payroll operations, while continuously improving processes, controls, and data integrity.

Responsibilities:

• Manage day‐to‐day banking activities across multiple accounts, currencies, and payment platforms, maintaining full visibility of cash positions across the Group.
• Build and maintain a robust short‐term cash flow forecast, working closely with the Head of Finance and senior stakeholders to inform decision‐making.
• Own banking relationships across the Group, including bank mandates, signatories, and the onboarding or management of new accounts.
• Oversee international banking operations including oversight of payments and expenses in China and other overseas entities, coordinating with local contacts where needed.
• Lead weekly payment runs in close collaboration with Accounts Payable, making decisions on what gets paid, when, and why.
• Take ownership of payroll operations across the business, coordinating with external payroll providers to ensure accuracy, compliance, and timely delivery.
• Act as the internal subject matter expert on payroll tax, with strong technical oversight of PAYE, NIC, pensions, and statutory requirements.
• Ensure GDPR compliance across all payroll data handling, secure document sharing, and access controls.
• Review and reconcile payroll‐related accounts, ensuring accuracy across the general ledger and appropriate accounting treatment.
• Support VAT submissions and broader tax compliance activities, including coordination with external advisors where required.
• Maintain audit readiness across payroll, treasury, and banking, supporting internal and external audit processes.
• Drive continuous improvement across treasury, payments, and payroll processes, systems, and internal controls.

What Our Client Needs to See (Essential):

• Proven hands‐on experience managing treasury, cash management, and banking operations in a multi‐currency, international environment.
• Experience building and maintaining cash flow forecasts and working with senior stakeholders.
• Proven experience managing end‐to‐end payroll in a complex environment, with strong technical knowledge of PAYE, NIC, and payroll tax.
• Strong attention to detail with the ability to identify discrepancies and challenge where necessary.
• Confident communicator able to build trusted relationships with banks, HR, finance teams, and external advisors.
• Strong understanding of payroll‐related accounting treatments, debits, credits, and reconciliations.

What We Would Like to See (non-essential):

• ACA, ACCA, or CIMA qualified.
• Experience supporting VAT submissions or broader tax compliance.
• Prior experience within professional services, design, construction, engineering, architecture, or a similarly project‐led environment.

Start Date: Flexible

Location: London (Hybrid – 3 days in office)

At Harmonic, we are dedicated to fostering an inclusive and equitable workplace. We actively welcome applications from individuals of all backgrounds and assure you that every candidate will be thoughtfully considered for the roles we represent, without regard to race, religion, gender expression, disability, or sexual orientation.