Senior Software Engineer - PaymentsLocation: United Kingdom (Remote/Flexible)Schedule: Monday-Thursday Travel: 0-10% About the CompanyA leading global digital platform empowering creators and businesses to launch innovative projects. With billions processed worldwide, the company is dedicated to building transparent, compliant, and scalable financial systems that support a global community. The RoleWe''re seeking a Senior Software Engineer to join the Payments team, responsible for designing and maintaining compliant, efficient, and auditable global payment flows. You''ll ensure accurate tax handling (VAT, HST, GST) and financial reporting across multiple jurisdictions, collaborating closely with Product, Finance, and Legal teams. Key Responsibilities Design, build, and maintain tax-aware, compliant payment systems. Develop automated solutions for tax calculation, refunds, and reconciliation. Ensure regulatory and audit compliance across global payment flows. Translate business and compliance requirements into scalable technical solutions. Lead complex engineering tasks and support junior developers through mentoring. Participate in code reviews and on-call rotations to ensure reliability. About You Experience building or maintaining payments systems in fintech or marketplace environments. Strong knowledge of VAT, HST, GST, and multi-jurisdictional tax compliance. Proficient in designing auditable, reliable payment and refund workflows. Skilled in Ruby on Rails, JavaScript/Ty