HR Manager

Altum Consulting; Greater London; On-site; GBP 64,000 - GBP 87,000; Part time

Job summary

A globally focused NGO in London is seeking an experienced HR Manager to lead HR strategy and operations. This part-time role requires expertise in UK employment law and experience with international teams. The successful candidate will manage recruitment, promote workplace culture, and ensure compliance with regulations. This is an exciting opportunity to contribute to the organisation's growth during its transition period. The role offers competitive remuneration with some flexibility for remote work.

Qualifications

• Proven experience in a senior HR generalist or HR Manager role.
• Strong knowledge of UK employment law and multi-country team support.
• Confidence managing recruitment and employee relations.

Responsibilities

• Lead HR strategy, policies, and practices aligned with organisational goals.
• Manage end-to-end HR operations, ensuring compliance with UK law.
• Support recruitment processes and promote a positive workplace culture.

Skills

HR strategy development

Knowledge of UK employment law

Stakeholder management

Recruitment management

Employee relations

Tools

HR systems

Payroll software

Job description

HR Manager | Permanent | Part-time (3-4 days per week | £64,000 - £87,000 FTE | Onsite with occasional WFH days

Altum are pleased to be partnering with a unique and globally focused NGO as it strengthens its new UK base. Operating at the intersection of independent media, governance, and global security, the organisation channels funding, research and partnership support to organisations working complex, fast-paced environments. As it transitions from a European structure to a UK‑Led one, it is seeking an experience HR Manager to lead on all elements of the employee lifecycle, including strategic planning and advice and guidance to senior leadership.

This is a rare opportunity to join at a pivotal moment and help build the processes, policies, and frameworks that will support with the organisation's continued growth.

About the role

The HR Manager will lead the full range of HR activities across the organisation. Reporting to the Chief Operating Officer, the role combines strategic HR input with hands‑on delivery. It will support UK‑based employees as well as remote staff and consultants internationally.

Key responsibilities

• Lead HR strategy, policies, and practices aligned with organisational goals
• Manage end‑to‑end HR operations, including onboarding,boarding, and employee relations
• Ensure compliance with UK employment law and relevant international regulations
• Lead recruitment processes and support hiring managers
• Oversee HR systems, payroll coordination, and HR reporting
• Support reward benchmarking, salary reviews, and workforce planning
• Promote a positive, inclusive workplace culture

Required experience

• Proven experience in a senior HR generalist or HR Manager role
• Strong knowledge of UK employment law
• Experience supporting international or multi‑country teams
• Confidence managing recruitment, employee relations, and HR operations
• Experience working with HR systems and payroll providers
• Strong judgement, discretion, and stakeholder management skills

The role will suit someone who is seasoned, strategic and hands‑on – someone who thrives in fast‑paced environments and strives for excellence.

Altum Consulting and our client are committed to diversity, equity and inclusion. We welcome applications from candidates of all backgrounds and experiences.

To apply or find out more, please submit your CV or contact us for a confidential discussion.