Join a collaborative HR Service Centre where your organisation, attention to detail and proactive mindset will make a real impact every day. Purpose & Scope of the Role As an HR Administrator, you will be a key member of a busy HR Service Centre, providing essential administrative support across a wide range of HR activities. Working within a supportive and evolving team, you will help ensure the accurate management of HR data, processes and employee records, acting as a central point of contact for HR queries across the business. This is a varied role where priorities can shift quickly, requiring strong organisational skills, attention to detail and the ability to manage high volumes of work to tight deadlines. Your Impact in this Position You will play a vital role in maintaining the integrity of HR systems and delivering a high-quality service to colleagues at all levels. Your work will ensure HR processes run smoothly, data is accurate and compliant, and employees receive timely and professional support. You will also build strong relationships across the business while contributing to the continuous improvement of HR operations. Core Capabilities HR Administration & Data Management: Maintain accurate HR records and systems in line with data protection requirements.Process employee data, contracts and documentation with precision Process Delivery & Compliance: Support HR processes including contract tracking, references and absence management. Ensure all activities align with policies and procedures Communication & Stakeholder Support: Respond to HR queries with professionalism and clarity and produce high-quality written communications, including letters and emails Organisation & Workload Management: Manage a high volume of tasks with competing deadlines andp rioritise effectively in a fast-paced, changing environment Team Collaboration & Continuous Improvement: Support HR colleagues, build strong working relationships and contribute to efficient ways of working and service improvements Skills, Qualifications & Experience Previous administrative experience with strong attention to detail and organisational skills. Confident using Microsoft Office, particularly Excel, with an interest in HR systems and data. Excellent communication skills, a proactive approach and the ability to work both independently and as part of a team are essential. Working Environment This is a 12-month fixed-term contract within a collaborative HR team. The role offers a flexible, hybrid working model, typically involving a mix of office-based work and home working, depending on business needs. You will be part of a supportive environment that encourages development and progression. About Tetra Tech Tetra Tech is a leading provider of consulting and engineering services working across the full project lifecycle worldwide. We have a wide range of expertise across our teams, providing a global support network with a personalised approach to client relationships to better understand where we can add value. We provide a collaborative environment that supports individual performance, innovation, and creativity. We support public and private sector clients on local, national, and international projects to deliver sustainable and resilient solutions. Our operations in the UK, Ireland, and the Netherlands include more than 6,000 employees who are Leading with Science® to solve our clients' most complex problems. In alignment with the Equality Act 2010, we will make reasonable adjustments to support candidates and employees requiring additional arrangements. This could include adaptations to work schedules, training approaches, or the physical workspace. Please inform us if you need any accommodations during the recruitment process or in your day-to-day role