Senior HR Advisor (Operations)

🔒 Confidential Employer
Posted 21 April 2026
LOCATION
Luton
TYPE
Contract
LEVEL
Mid-Senior level
CATEGORY
Human Resources
This employer holds a UK Home Office sponsor license — sponsorship for this specific role is at the employer’s discretion

SKILLS

Employee Relations UK Employment Law HR Advice HR Casework HR Policy Recruitment TUPE Unionised Environment

FULL DESCRIPTION

A large, complex organisation is seeking an experienced Senior HR Advisor to join on a contract basis to support a busy HR operations function. This role is well suited to an HR professional who thrives in fast-paced, unionised environments and is confident managing complex employee relations casework from day one. You will act as a trusted advisor to senior leaders, providing pragmatic, legally sound HR guidance while supporting change initiatives and operational priorities.

Location

Luton

, London

Sector

Public Sector

Contract Type

Contract

Salary

£ 250 per day - £ 260 per day

Competitive

Duration: Initial 3–6 months (likely extension)

Day Rate / Salary: £250 Per Day (inside IR35)

The Opportunity

A large, complex organisation is seeking an experienced Senior HR Advisor to join on a contract basis to support a busy HR operations function. This role is well suited to an HR professional who thrives in fast-paced, unionised environments and is confident managing complex employee relations casework from day one.

You will act as a trusted advisor to senior leaders, providing pragmatic, legally sound HR guidance while supporting change initiatives and operational priorities.

Key Responsibilities

  • Provide expert HR advice across the full employee lifecycle, including:
  • Disciplinary, grievance, performance, absence, redundancy, and organisational change
  • Equality, discrimination, bullying and harassment matters
  • Recruitment, retention, and employment legislation (including TUPE)
  • Manage and progress a varied caseload, including complex and high-risk ER matters
  • Lead and support investigations, hearings, appeals, and formal HR processes
  • Prepare and present HR input at meetings, panels, and hearings
  • Work constructively with trade unions and employee representatives
  • Support organisational change programmes in line with policy and best practice
  • Contribute to HR policy interpretation, development, and implementation
  • Support or lead HR project work, including data analysis and reporting
  • Provide guidance and informal mentoring to HR colleagues where required

About You

Essential:

  • Proven experience in a senior HR advisory or generalist contract role
  • Strong background in employee relations within a unionised environment
  • In-depth working knowledge of UK employment law
  • Confident advising senior stakeholders on complex and sensitive matters
  • Able to manage competing priorities and high-volume casework
  • Available to work predominantly on-site due to hearings and stakeholder needs

Desirable:

  • Public sector, education, or highly regulated environment experience
  • CIPD qualified (or equivalent demonstrable experience)
  • Previous interim or contract HR experience
Sign up free — access 45,000+ UK sponsor-licensed jobs