Senior Reserving Actuary; m​/f​/x – ResQ Implementation Lead

(Senior) Reserving Actuary (m/f/x) – ResQ Implementation Lead About the Role

DAS Belgium is looking for a Senior Reserving Actuary to lead the implementation and embedding of ResQ as the central reserving tool across the company. In this pivotal role, you will own the methodological framework, documentation, and governance of technical provisions under BE GAAP, IFRS and Solvency II (EBS & OF).

You will act as the key link between the Reserving department, the Technical Excellence team, Finance/Reporting and Risk, ensuring consistency, transparency and high-quality technical reporting across the organization and supporting Finance in robust planning and forecasting.

• A strategic role with high visibility and direct impact on the actuarial and financial framework of DAS Belgium.
• The opportunity to shape and own the ResQ implementation and reserving methodology.
• Close collaboration with senior stakeholders in Reserving, Technical Excellence, Risk, Finance and IT Transformation.
• A supportive environment promoting professional development and actuarial excellence.
• Competitive compensation package and attractive benefits.

• Lead and coordinate the implementation of ResQ as the main reserving platform for DAS Belgium.
• Design and maintain standardised reserving processes in ResQ, including workflow, controls and governance.
• Develop and document data structures and actuarial triangles (paid, incurred, claim counts, exposures, etc.) for all relevant lines of business.
• Ensure proper integration of ResQ outputs into finance, risk and reporting processes.
• Provide ResQ-based reserving outputs and analyses that support the Finance team’s financial planning, projections and forecasting.
• Drive the selection, calibration and parametrisation of actuarial reserving models (e.g. Chain Ladder, BF, Mack, frequency–severity, claims development models) in ResQ.
• Challenge and validate key assumptions (loss ratios, development patterns, tail factors, large and catastrophic claims, IBNR vs IBNER, etc.).
• Develop and maintain model documentation, including rationale, limitations and expert judgments.
• Support the development of scenario, sensitivity and stress testing for reserve adequacy and volatility.

• Draft, maintain and enforce the Reserving Policy in line with:
  • BE GAAP requirements
  • IFRS accounting requirements (including alignment with actuarial best estimate principles)
  • Solvency II technical provisions for Economic Balance Sheet (EBS) and Own Funds (OF).
• Ensure consistency between statutory, IFRS and Solvency II technical provisions.
• Produce and maintain methodology papers, process descriptions and technical documentation for internal and external stakeholders (e.g. auditors, regulators, Group).
• Contribute to the Actuarial Function reports and related governance documents.

• Lead the analysis, validation and explanation of technical provisions and reserve movements for:
  • Internal reporting (management, Technical Excellence, Finance)
  • External reporting (regulatory, Group, auditors).
• Take responsibility for the quality assurance (QA) of actuarial inputs and outputs used in:
  • Internal technical reports
  • External technical and regulatory reports (e.g. Solvency II QRTs, SFCR, RSR contributions).
• Work closely with the Finance/Reporting team to support business planning and forecasting, ensuring that actuarial reserving insights are appropriately reflected in financial projections and forward‑looking analyses.
• Provide clear, business‑oriented explanations of reserve developments, past trends and forward‑looking indicators.

• Act as the primary actuarial interface between Reserving and the Risk function under the CRO.
• Support and perform quality assurance of SCR calculations, particularly for underwriting risk (reserving risk, premium risk), ensuring alignment between:
  • Reserve best estimates and risk parameters
  • ResQ results and SCR models (standard formula and/or internal model/partial internal model).
• Provide back‑up and challenge on SCR…