Senior Payroll Specialist (Maternity Leave Cover) (m/f/d; 80-100%; 10 months)

At Accelleron, you go further! Building on the success story of more than 100 years of ABB Turbocharging, you will become part of a team of true experts in an exciting international environment, who are collectively committed to excellence. As a trusted partner, we support our customers in the transition to sustainable industries with innovative technology, expertise, and intelligent solutions. We promote diversity and inclusion in all dimensions (e.g., gender, LGBTQ+, ethnicity, age, disability, religion or other characteristics), as we welcome and celebrate individual differences. See English version below In this role, you will take on a maternity leave cover limited to 10 months, ideally starting on November 1, and will be responsible for the independent execution of Swiss payroll processing for over 1'000 employees. You will ensure correct, legally compliant, and timely payroll throughout the entire employee lifecycle and act as a Subject Matter Expert for payroll, time & absence, social security, and taxes. In close cooperation with employees, managers, HR, Finance, and external bodies, you will advise on payroll-relevant topics, drive process improvements, and ensure the successful execution of audits as well as compliance with all regulatory requirements. A structured induction as well as a comprehensive handover by the current job holder will guarantee a smooth entry into the function. Your tasks: Independent execution of the monthly payroll processing for over 1'000 employees in Switzerland. Ensuring correct and timely payroll processing including payroll accounting, salary certificates, and year-end processing. Maintenance and validation of payroll-relevant personnel, organizational, and compensation data to ensure correct and legally compliant payroll processing throughout the entire employee lifecycle. Support and execution of payroll-relevant processes in Workday, SAP, and other connected HR systems. Taking on the role as Subject Matter Expert for Swiss Payroll, Time & Absence, social security, and taxes, as well as ensuring compliance with legal requirements and best practices. Main contact person for external stakeholders (e.g. social security). Processing and coordination of payroll-relevant inquiries and tickets from employees, managers, and HR Business Partners. Processing and reconciliation of payroll data, creation of payroll reports and analyses, as well as close cooperation with Finance on account reconciliations and HR-relevant accruals. Responsibility for internal and external payroll audits as the central contact person on behalf of HR, as well as ensuring the timely and correct provision of documentation, data, and reconciliations. Your profile: Commercial education or a comparable qualification in combination with a diploma as «HR Fachmann / Fachfrau» or «Sozialversicherungsfachmann / Sozialversicherungsfachfrau» or Payroll Expert. Several years of practical experience in Swiss payroll processing in SAP HCM. Sound knowledge of Swiss social security, tax, and labor law. Good knowledge of Workday and SAP HCM. Very good Excel skills as well as strong analytical skills for payroll reporting, reconciliations, and data validations. High accuracy as well as a strong sense of quality and responsibility. Ability to recognize optimization potential, drive improvement initiatives, and implement sustainable solutions pragmatically. Service-oriented, proactive, and independent way of working. Fluent German and English skills. Your benefits: Attractive compensation. Canteen. Crèche. modern office premises, smart working. flexible working time models and locations. Home office possibilities. Employee Assistance Program. Company social counseling. ___________________________ In this role, you will join Accelleron on a 10-month maternity leave cover assignment, ideally starting on November 1, and independently manage Swiss payroll operations for more than 1,000 employees. You will ensure accurate, compliant and timely payroll processing throughout the employee lifecycle while acting as the subject matter expert for payroll, time & absence, social security and tax matters. In close collaboration with employees, managers, HR, Finance and external institutions, you will provide expert guidance, drive continuous process improvements and ensure successful payroll audits and regulatory compliance. A structured onboarding and comprehensive handover from the current role holder will be provided to ensure a smooth transition into the role. Your Responsibilities: Independently execute the monthly payroll process for a workforce of over 1,000 employees in Switzerland. Ensure accurate and timely salary payments, payroll accounting, salary statements and year-end activities. Maintain and validate payroll-relevant employee, organizational and compensation data to ensure accurate and compliant payroll processing throughout the employee lifecycle. Manage payroll-related activities within Workday, SAP and connected HR systems. Act as the Subject Matter Expert for Swiss Payroll, Time & Absence, Social Security and Tax matters, providing expert guidance and ensuring regulatory compliance and best-practice application. Serve as the primary contact for external stakeholders (e.g. social security institutions). Handle and coordinate payroll-related inquiries and ticket requests from employees, managers and HR Business Partners. Process and reconcile payroll data, prepare payroll reports and analyses, and work closely with Finance on payroll account reconciliations, HR-related accruals. Own internal and external payroll audits, acting as the key HR co