HR Manager (Part-Time)

Job Title: HR Manager (Part-Time)

Location: Charing Cross, London (fully office-based) Pay Rate: £24.00-£25.00 per hour Type: Temporary Duration: Ongoing (until permanent hire; potential to go permanent) Start Date: ASAP (handover period required) Working Hours: Part-time, 24 hours per week (across 3 days - flexible on days)

Overview

We are seeking an experienced and hands-on HR Manager to join a high-performance, fast-paced professional services environment. This is a broad generalist role where you will act as the primary HR contact for the London office, working closely with senior leadership and collaborating with an international HR team. The role combines operational HR delivery with the opportunity to contribute to strategic people initiatives, including recruitment, performance management, employee engagement, and culture. This position is well suited to a confident HR professional who thrives in standalone roles and enjoys working with senior stakeholders.

Key Responsibilities

HR Business Partnering & Leadership Support

Act as the primary HR contact for the London office

Provide expert HR advice and support to managers and employees

Partner closely with senior leadership on both day-to-day and strategic HR matters

Support initiatives to enhance culture, engagement, and leadership effectiveness

Contribute to building and maintaining a high-performance culture

Recruitment & Onboarding

Manage end-to-end recruitment processes (job posting, screening, interview coordination, offers)

Liaise with external search partners and manage relationships

Support early careers and campus recruitment initiatives

Oversee onboarding processes to ensure a smooth and positive employee experience

Manage onboarding and coordination for incoming interns

Performance & Talent Management

Support and manage performance review cycles

Prepare reports and documentation for senior stakeholders

Assist with talent discussions, promotion readiness, and calibration processes

Employee Relations

Act as first point of contact for employee relations queries

Support performance management and probation processes

Liaise with external legal advisors on complex matters where required

Immigration & Compliance

Manage visa and sponsorship processes end-to-end

Ensure compliance with UK employment law and Home Office requirements

Partner with external advisors on complex cases

HR Operations & Systems

Maintain accurate HR records and systems

Prepare contracts, amendments, and employee documentation

Review and update HR policies and the employee handbook

Support ongoing improvement of HR processes and systems

Skills & Experience Required

Proven experience in a standalone or generalist HR role

Strong stakeholder management skills with the ability to influence senior leaders

End-to-end HR lifecycle experience (recruitment, ER, performance management)

Solid knowledge of UK employment law and HR compliance

Experience managing multiple priorities in fast-paced environments

High attention to detail and strong organisational skills

Confident working independently and making decisions

Strong written and verbal communication skills

Analytical and solutions-focused mindset

Desirable

Experience in professional services, financial services, or similar high-performance environments

Exposure to visa sponsorship and immigration processes

Experience working with international teams

Familiarity with HR systems (e.g. Personio)

German language skills (beneficial but not essential)

Adecco acts as an employment agency for permanent recruitment and an employment business for the supply of temporary workers. The Adecco Group UK & Ireland is an Equal Opportunities Employer.

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