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2 senior hr advisor jobs found in London

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London Hybrid senior hr advisor
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Full time  (1) Part time  (1) Fixed Term Contract  (1)
Greenpeace UK
18/09/2026
Full time
Senior HR Advisor
Greenpeace UK Hybrid (Canonbury Villas, London, UK)
This is a broad and varied role combining operational HR practice, service development and project delivery, suited to an experienced generalist with a solid grounding in UK employment law. As part of our dedicated People & Culture team, you will work closely with a fellow Senior HR Adviser to provide expert guidance to staff and managers, managing a diverse caseload across the full employee lifecycle — from employee relations, performance, conduct and sickness absence, through to recruitment, onboarding and staff welfare. You will help managers navigate complex people issues with confidence, knowing when to escalate where legal or reputational risk requires it. You will be a key point of contact for our UK-based international staff, building relationships with Greenpeace International and NRO People & Culture teams to ensure coordinated, effective support — including advising on hosted staff contracts and managing visa sponsorship processes. This is an exciting...
£48,396 - £55,644 (We normally offer a starting salary at the start of the range) Hybrid Working - min 2 days office based
Cassini Systems Ltd
03/09/2026
Part time Fixed Term Contract
HR Manager (12 Month Fixed Term Contract, Maternity Cover)
Cassini Systems Ltd Hybrid (London, UK)
Reporting to the Business Operations Manager, the HR Manager is the first point of contact for managers and employees, providing support and solving problems. The role aims to provide general HR support across the employee lifecycle: recruitment, compensation and benefits, learning and development, employee engagement, performance management and employee relations, communications and administration.  The HR Manager oversees the HR Advisor for the Chennai Office Working Hours: This is a part-time, 12-month fixed-term contract (maternity cover), working 21 hours per week over four days (Monday to Thursday). Salary: £60,000 - £65,000 per annum pro rata.  Start date: 2nd November 2026. About us Step into the future with Cassini - Founded in 2014, we are the established, core utility provider of analytics and optimization tools built for the derivatives industry. From London to New York, Sydney to Singapore, hedge funds, asset managers, and banks...
Salary: £60,000 - £65,000 per annum pro rata. 
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