HR Manager (part-time)

Carlsquare is a leading technology investment bank. With 12 offices across 8 countries, we empower tech innovators and investors worldwide to achieve their strategic objectives. Our core services include M&A, debt capital, growth equity, and IPO advisory. We have successfully closed over 600 transactions.

We are seeking an experienced HR Manager to support our London office on a part‑time basis (minimum 20 hours per week, office‑based). This is a broad, hands‑on HR generalist role in a high‑performance investment banking environment, acting as the primary HR contact for the London team. You will work closely with senior leadership and partners, as well as the German HR team, to deliver a full spectrum of HR services while also contributing to strategic people initiatives.

The role combines operational excellence with the opportunity to shape key areas such as recruiting, performance management, leadership capability, culture, and employee engagement.

• HR Business Partnering & Leadership Support
  • Act as the primary HR advisor for the London office, providing trusted guidance to managers and employees.
  • Work closely with partners and senior management on day‑to‑day and strategic HR matters.
  • Drive and support initiatives that strengthen culture, engagement, and leadership effectiveness.
  • Support the development of a high‑performance culture.
• Recruiting & Onboarding
  • Manage the end‑to‑end recruitment process, including job posting, CV screening, interview coordination, and offer management.
  • Coordinate with external search firms and manage relationships effectively.
  • Lead campus recruitment activities and maintain relationships with key universities and talent pipelines.
  • Oversee structured onboarding process to ensure a strong employee experience from day one.
• Performance & Talent Management
  • Coordinate performance review processes in collaboration with senior management.
  • Prepare reporting materials.
  • Support promotion readiness discussions and talent calibration processes.
• Employee Relations
  • Provide day‑to‑day HR support on employee relations matters.
  • Support probation reviews and advise on performance management cases.
  • Work with external legal advisors on complex employment matters.
• Immigration & Compliance
  • Manage end‑to‑end visa and sponsorship processes.
  • Liaise with external legal advisors on complex cases.
  • Ensure compliance with Home Office reporting obligations.
• HR Operations & Systems
  • Maintain accurate HR records and ensure integrity of HR data and systems.
  • Prepare employment contracts, amendments, and related documentation.
  • Manage the implementation and continuous improvement of HR policies and the employee handbook in line with UK employment law.

We will provide a welcoming, international team in our London office, with a collaborative culture where your ideas are valued and team members support each other. A high degree of autonomy and responsibility. The opportunity to connect and celebrate with colleagues at our annual international company off‑site, where the entire company gathers in a European city.

• Proven experience in an HR generalist role.
• Strong stakeholder management skills, with the credibility to engage effectively with senior leaders and partners.
• End‑to‑end HR lifecycle experience across recruitment, performance management, and employee relations.
• Solid understanding of UK employment law and HR compliance.
• Excellent organisational skills with the ability to manage multiple priorities effectively.
• Comfortable operating in a fast‑paced, high‑performance environment and working directly with senior stakeholders and partners.
• An analytically minded, solutions‑focused approach.
• High attention to detail and strong execution capability.
• Excellent teamwork skills.
• A clear communication style.
• Fluency in English (written and verbal).

Join our team! Interested in joining our team? We look forward to receiving your application. Successful candidates must have the legal right to work in the UK. We are an equal opportunities employer and welcome applications from all suitably qualified candidates.