Tax Audit Specialist - Flexible working

International Tax Advisor / Tax Specialist Location: London or Geneva Insignia Group is a global leader in financial services, luxury lifestyle management, and bespoke concierge solutions, serving a discerning international clientele. We pride ourselves on delivering excellence, privacy, and innovation across our business verticals. We are seeking a highly skilled and strategic International Tax Advisor/Specialist to join our growing global tax team. This role is pivotal in ensuring tax compliance, optimizing cross-border tax strategies, and supporting business expansion initiatives across jurisdictions. The ideal candidate will have deep knowledge of international tax frameworks, strong advisory capabilities, and experience in a fast-paced, multi-jurisdictional environment. Provide expert tax advice on international tax planning, structuring, and compliance matters across various jurisdictions. Ensure compliance with international tax laws, including BEPS, OECD guidelines, and FATCA/CRS reporting obligations. Advise on the tax implications of global transactions, new entity formations, and cross-border intercompany arrangements. Monitor tax law developments and assess impact on business operations and structures. Manage relationships with external tax advisors and local tax authorities in various jurisdictions. Collaborate with legal, finance, and business teams to support tax-efficient operational models. Lead or support tax audits, investigations, and transfer pricing documentation as required. Assist in the design and implementation of internal tax governance frameworks and controls. Bachelor’s degree in law, or a related field. A Master’s in Tax or a relevant professional certification (e.g. 5+ years of experience in international tax advisory, preferably in a Big 4, multinational corporation, or financial services environment. ~ Strong understanding of international tax regimes, transfer pricing, and treaty networks. ~ Experience with tax compliance and advisory in key jurisdictions (e.g., Familiarity with fintech or high-net-worth individual structures is a plus. ~ Proven ability to manage multiple projects and stakeholders in a fast-paced, dynamic environment.