Finance and Accounting Manager

Who We Are Located in the heart of Bangkok’s Phrom Phong District, Sertis is ASEAN's leading Data and AI engineering and solutions company. Since 2014, our advanced solutions and products have powered over 400 enterprise Data and AI deployments at the region’s leading companies and conglomerates. We are also a member firm of Andersen Consulting, a global consulting practice integrating business strategy, digital transformation, and AI-driven technology solutions with Andersen Global’s world-class expertise. What We Do Sertis provides both productized and bespoke AI and Data solutions for our Customers, optimizing and commercializing their data in ways that activate real business results. Our 140+ team have developed product offerings and IP ranging from advanced Computer Vision applications accredited Global Top 20 by NIST, to automated insights monetization for Retailers, eKYC for financial institutions, AI-driven agricultural safety assurance, precision steel cutting, trading algorithms for hedge funds, and enterprise knowledge management systems based on AI. Our Aspiration We are data and AI pioneers, dedicated to enhancing the economic and social lives of our customers via technology. We are not just living in history, we are making history everyday. In becoming one of the world’s leading Data and AI companies, we always double-down on remaining a place where a diverse mix of talent wants to come, do their best work, and stay. We pride ourselves on bringing the best talent worldwide into a culture that encourages learning, growth opportunities, innovative contributions, and a sense of ownership. As part of Andersen Consulting, we are committed to delivering best-in-class Data and AI solutions—aligned with a global platform known for innovation, integration, and impact—while continuing to set benchmarks in the region and beyond. For more information, please visit: sertiscorp.com *Thai nationals only* Overview of the Job We are looking for a Finance and Accounting Manager to lead Sertis' finance and accounting function, with responsibility split evenly across strategic finance and core accounting. On the finance side, you will own budgeting, forecasting, financial planning & analysis, treasury, and business partnering. On the accounting side, you will own the close cycle, statutory compliance, AP/AR, and controls. Reporting directly to the C-level, you will coach a small team, partner with business units across Sertis, and play a central role in scaling our finance function as the company grows. In this role, you will get to: Finance Lead the annual budgeting process and rolling forecasts, working with department heads to build, challenge, and consolidate plans Own financial planning & analysis, including variance analysis, KPI reporting, unit economics, and management reporting packs for C-level and the board Build and maintain financial models to support pricing, project profitability, headcount planning, and scenario analysis Lead treasury and cash management, including cash flow forecasting, daily cash positioning, bank relationship management, FX exposure monitoring, and liquidity planning Partner with the people team, project managers, and business teams to provide commercial and financial insight that drives decision-making and improves working capital Support strategic initiatives such as funding rounds, banking facilities, due diligence, and corporate transactions Accounting Own month-end, quarter-end, and year-end closing processes, ensuring accurate and timely financial statements in line with TFRS Manage the full accounts payable and accounts receivable cycles, including vendor payments, customer collections, aging analysis, and credit control Ensure full compliance with Thai tax regulations (VAT, withholding tax, corporate income tax) and oversee timely filings and submissions Manage the annual external audit and serve as the primary point of contact for auditors, tax authorities, and regulators Develop, docume…