Client Finance Operations Manager 12M FTC

About Us At Assembly, our mission is to find the change that fuels growth. We apply this principle to the work we do with our clients and to how we engage with our people. We’re a modern global agency bringing together media, data, technology and talent to make brands perform. Our business is purpose driven. In March 2022, we were named Ad Age’s first ever Purpose-Led Agency of the Year, recognised for our mission to leave the world better than we found it. This year we became B Corp certified, the result of a two-year journey. We’re proud to have created a culture where diversity of thought, experience, and background are valued, within an environment that fosters continuous learning, adaptability, and a shared passion for meaningful impact. When you join Assembly, you become part of an award-winning global community of digitally led experts, home to 1,500 talented people across 25 offices globally. Together we create unique data, technology and media solutions that enable faster and smarter problem solving within an inspired, collaborative workplace. Assembly is poised for its next chapter of growth. We’re a meritocratic, high-performance business with a progressive outlook and a growth mindset in all that we do. To realise our potential we need some new skills and thinking. The core DNA of Assembly lies in digital performance marketing. New and existing clients are asking us to extend this expertise across all media, connecting traditional channels with digital methods of execution, measurement and automation. We were born the right way to do this – we’re building out from a leading digital and technology capability and adding the rest, rather than trying to reverse engineer a legacy business into a more modern version of itself. At Assembly we ask our people to embody three core values: Show Up: actively contribute to a space of personal and collective growth Make Change: embrace obstacles as opportunities, taking intentional steps to drive positive change Win Well: approach success with integrity, responsibility, and a commitment to collaboration, understanding that the journey is as important as the destination. We look forward to meeting you and to discussing how we can grow together. Overview The primary focus of this role is to serve as the primary point of contact for Client Engagement Teams and Financial Operations (Accounting, Revenue & Billing) and act as the day-to-day finance liaison for inquiries within the agency. Your collaborative efforts will extend to working with various stakeholders, including client teams, agency finance, and the Shared Financial Services Centre teams, both within the agency and across Assembly Global. Responsibilities WIP/Deferred Reconciliations and analysis Working and establishing good relationships with various internal and external stakeholders: among others, intercompany agency teams, global and regional commercial teams, clients, vendors, client finance teams, accounting, and regional head of Finance. Ensuring all clients’ finance needs are met; providing day-to-day support to the agency on all things finance to ensure all bookings are billed and paid in a timely manner, with a focus on optimizing late billings and unbilled media. Collaborating with Accounting & Finance to ensure effective working capital processes and deliver precise management information. Conducting thorough reviews to ensure client contractual compliance and pinpoint areas of financial risk. Following up with media team members on an ongoing basis regarding billing, finance procedures and discrepancies. Identifying and resolving errors and discrepancies on a day-to-day basis. SOX audit requests Assist with Client Onboarding Liaising with billing on Intercompany invoicing Required Skills Experience & Skills: 2–4 years as a Reconciliation Liaison or similar role. Technical Proficiency: Advanced Excel skills (formulas, Power Query, automation, high-volume data handling). Data Management: Ability to consolidate and present data for management review. Independence & Initiative: Entrepreneurial mindset with the ability to troubleshoot and improve processes across teams. Media & Accounting Systems: Experience with Media Ocean/Prisma and Maconomy. Attention to Detail: Meticulous, professional, and eager to learn. Financial & Media Processes: Strong numerical acumen, analytical skills, and understanding of media billing procedures. Collaboration: Work closely with Operations Executives, management accountants, and internal business units to enhance communication and ensure adherence to processes. Organization & Multi-Tasking: Dedicated, hardworking, and exceptionally organized with strong problem-solving skills. Environmental & Social Impact: Provide financial data for yearly carbon foot printing, working closely with the Purpose team. Support implementation of donation policies and Assembly’s B Corp certification. Collaborate with the Impact team to develop KPIs and metrics for environmental and social impact reporting. Qualifications Note: This is a 12-month FTC we are looking for a March 2026 start date. Equal Opportunities Assembly is an advocate for equal opportunity in the workplace. We are committed to ensuring equal opportunities regardless of race, colour, religion, sex, national origin, sexual orientation, age, citizenship, marital status, disability and gender identity. We also consider qualified applicants regardless of criminal histories, consistent with legal requirements. If you have a disability or special need that requires accommodation, please let us know.