Senior HR Advisor

Senior HR Advisor | HR Advisor | Human Resources Advisor | HR Business Partner

Cardiff | Full-Time | 37.5 Hours per Week | Monday to Friday | Temporary Contract Until End of 2026

Acorn by Synergie is recruiting for an experienced

Senior HR Advisor to join a leading organisation based in

Cardiff
.

This is an excellent opportunity for an experienced

HR Business Partner to join a well-established corporate organisation on a long-term temporary contract.

Working as part of a professional HR team, you'll provide expert advice across the full employee lifecycle, partnering with managers to deliver high-quality HR support, manage complex employee relations cases, and support people-focused initiatives that improve employee engagement and organisational performance.

• Provide proactive day-to-day HR support to managers across the business, delivering practical people solutions and HR best practice.
• Advise and coach managers on employee relations matters, including disciplinary, grievance, absence management, capability, and performance issues.
• Ensure HR policies and procedures are applied consistently and in line with UK employment legislation.
• Coordinate and deliver key HR activities, including performance management, learning and development, wellbeing initiatives, and occupational health processes.
• Produce, maintain, and analyse HR reports, KPIs, and employee data, ensuring compliance with GDPR and data protection requirements.
• Support organisational change projects, restructures, and continuous improvement initiatives.
• Lead and support talent management, succession planning, employee engagement, diversity and inclusion, and wellbeing programmes.
• Build strong relationships with managers and stakeholders, providing trusted HR advice and guidance across the organisation.
• Support HR projects and contribute to the ongoing development of HR processes and policies.

• Previous experience as an HR Business Partner, or similar generalist HR role.
• Strong experience managing employee relations casework, including disciplinary, grievance, absence management, and performance issues.
• Excellent knowledge of UK employment law and HR best practice.
• Experience working within a corporate, professional services, public sector, or large organisational environment.
• Confident communicator with the ability to build effective working relationships at all levels.
• Strong organisational skills with excellent attention to detail and the ability to manage multiple priorities.
• Proactive approach with a continuous improvement mindset.

CIPD Level 5 qualification or above, or working towards this, supported by relevant HR experience.

• Happy to work on-site Monday to Friday, with occasional flexible home working where appropriate.

• Full-time, site-based role in

Cardiff
.

37.5 hours per week
, Monday to Friday.

• Flexible working hours between

8:00am-9:00am start and

4:00pm-5:00pm finish.

• Temporary contract expected to run until the

end of 2026
.

• Opportunity to join a leading organisation within a unique and interesting sector.
• Collaborative HR team with exposure to a broad range of strategic and operational HR activities.