Job Title: Senior Payroll Specialist Shift: 24 hours per week (Flexible schedule) Location: Havant (Hybrid Working) Contract Type: Fixed Term Omega is supporting a global leader in advanced engineering and defence solutions in their search for a skilled and experienced Senior Payroll Specialist to join their team. This role plays a key part in supporting a large, insourced payroll function within a highly regulated, secure environment. Key Responsibilities - Senior Payroll Specialist Processing full-cycle payroll for approximately 1,700 employees. Conducting secondary checks on payroll inputs and mentoring team members. Handling payroll adjustments, reversals, overpayments, and settlement calculations. Ensuring compliance with UK payroll legislation and statutory payments (SMP, SSP, etc.). Maintaining accurate employee records including starters, leavers, tax, and NI. Performing reconciliation duties (e.g., P60s, P11Ds, FPS). Collaborating with HR and Finance to deliver accurate, timely payroll. Supporting payroll-related projects including systems transitions and audits. Qualifications & Requirements - Senior Payroll Specialist Proven experience managing insourced payrolls from start to finish. In-depth knowledge of UK payroll legislation and HMRC requirements. Excellent Excel skills including pivot tables and lookups. Strong attention to detail and ability to manage priorities i...