Finance Systems Manager

Smartly.io; Greater London; Hybrid; GBP 70,000 - 90,000; Full time

Job summary

A leading advertising technology firm in the United Kingdom is seeking a strategic Finance Systems Manager. This role will own the finance systems roadmap, drive automation, and enhance operational efficiency across invoicing and financial processes. The ideal candidate will be a qualified accountant with significant experience in managing finance systems, proficient in SQL and Python, and possess strong analytical skills. This position supports a hybrid work environment.

Benefits

Competitive salary

Flexible working hours

Career growth opportunities

Qualifications

• Proven experience implementing or managing finance systems in a dynamic environment.
• Experience with BI and dashboarding tools.
• Strong analytical mindset and curiosity for how systems and data work together.

Responsibilities

• Own the finance systems roadmap and streamline data flows.
• Lead system development and integrations with software developers.
• Mentor finance system users and foster best practices.

Skills

Analytical problem-solving

System integration

Data governance

Excellent written communication

Invoicing operations

Collaboration

Technical specification translation

Experience with SQL

Comfortable with Python

Dashboarding tools experience

Education

Qualified accountant (ACA, ACCA, CIMA, or equivalent)

Tools

NetSuite

Zuora

Dynamics 365

Tableau

Power BI

Looker

Job description

We’re looking for a strategic, analytical, and systems-savvy Finance Systems Manager to join our Finance Operations team. This role sits at the intersection of finance, data, and technology—ideal for someone who loves solving complex problems, improving processes, and enabling scalable growth. You’ll own our finance systems roadmap, streamline data flows, drive automation, and ensure operational excellence across our invoicing and financial processes.

As a Finance Systems Manager at Smartly, you will…

• Own and evolve the finance systems roadmap, ensuring it aligns with our finance and business strategy.
• Lead system development and integrations, partnering closely with software developers to design, test, and implement new functionalities, automations, and reporting tools.
• Oversee finance dashboards, ensuring stakeholders have reliable, actionable, and insightful data.
• Create and maintain comprehensive process documentation, data flow diagrams, and user guides to ensure clarity, consistency, and scalability.
• Review and support invoicing operations, ensuring accuracy, timeliness, and compliance across all billing activities.
• Identify and solve system inefficiencies, using strong analytical and technical skills to design sustainable solutions.
• Strengthen data governance and internal controls, maintaining high standards of data quality and integrity across all financial systems.
• Collaborate cross-functionally with finance, operations, and engineering teams across international time zones to translate financial requirements into technical solutions.
• Mentor and support finance system users, fostering best practices in documentation, problem-solving, and system adoption.
• Are a qualified accountant (ACA, ACCA, CIMA, or equivalent).
• Have proven experience implementing or managing finance systems in a dynamic, data-driven environment (e.g., NetSuite, Zuora, Avalara, Dynamics 365, SAP, Stripe).
• Are comfortable working with SQL, Python, R, VBA, or other scripting languages, and can translate functional finance needs into technical specifications.
• Have experience with BI and dashboarding tools (e.g., Looker, Power BI, Tableau, Redash, BigQuery).
• Bring excellent written communication skills and can maintain robust, clear, and scalable process documentation.
• Are a structured yet creative problem solver with a strong analytical mindset and curiosity for how systems and data work together.
• Have experience with invoicing or billing operations and are comfortable reviewing transactional accuracy.
• Ideally have industry experience in SaaS, media, digital advertising, or ad‑spend businesses.
• Thrive in a collaborative environment and can build trust across finance, operations, and technical teams.

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About Smartly

Smartly is the AI‑powered advertising technology company transforming ad experiences for brands and their consumers. Our comprehensive advertising platform seamlessly integrates the capabilities of media, creative, and intelligence to power more than 800 billion impressions and generate more than 300 billion creatives annually, delivering tangible business outcomes for brands and advertisers.

Smartly is the only company in the industry recognized as a Leader in The Forrester Wave: Creative Advertising Technologies with PwC validating the results it delivers for brands. We manage creative and media for 700+ brands worldwide and $6B in ad spend across the largest media platforms, including Facebook, Google, Instagram, Pinterest, Snap, and TikTok. Our end‑to‑end technology, unmatched access to media platforms and exceptional customer service help Fortune 500 brands to reach and engage consumers and learn what performs best. Smartly is a multinational and diverse team of 750+ Smartlies from 60+ nationalities, working in 13 countries. Together, we want to create and maintain an inclusive environment where everyone feels respected and heard. Our Diversity, Equity & Inclusion approach is at the heart of it.

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