Senior Reserving Actuary Location: London Job Type: Contract - Contract is until end of the year (December 2026) Work Setup: Hybrid - 3 days in office per week Who We Are Aspen Insurance provides innovative, client-focused insurance solutions, combining industry expertise with global reach and financial stability. As an employer, we offer a supportive, inclusive workplace where your ideas matter, careers grow, and employees can take on new challenges while making a real impact. What You''ll DoActuary, Reserving Core ResponsibilitiesDevelop deep understanding of Aspen''s portfolios, including business mix, loss triggers, geography, and key insureds/reinsureds.Lead and manage analysts to meet deadlines and support discussions with Claims, Underwriting, Finance, and the UK Chief Actuary.Integrate cross-functional insights to produce robust reserve recommendations.Present, communicate, and defend analyses to senior management.Provide actuarial insight into portfolio profitability and act as a technical resource across the business.Identify and implement process and methodology improvements within the reserving function.Support understanding of legal and regulatory requirements impacting actuarial work and business strategy.Contribute to a collaborative, values-driven team culture.Strategy andamp; PlanningSupport actuarial strategy and align team deliverables with business objectives.Manage tactical plans and contribute to key actuarial projects.Drive process improvement initiati