HR & Onboarding Advisor

Flatpay; Greater London; On-site; GBP 35,000 - 45,000; Full time

Job summary

A growing fintech company in London is seeking an experienced HR & Onboarding Advisor to manage the employee lifecycle and support onboarding activities. The role involves maintaining accurate records, drafting HR documents, and ensuring compliance with UK employment law. The ideal candidate will have strong organizational skills and be able to coordinate effectively with multiple stakeholders. This is a full-time, on-site position focused on creating a smooth and positive employee experience.

Qualifications

• Strong understanding of HR processes including onboarding and offboarding.
• Familiarity with UK employment law.
• Excellent organizational and coordination skills.

Responsibilities

• Manage the full employee lifecycle in Personio.
• Maintain accurate employee records and audit-ready personnel files.
• Draft offer letters and contracts, ensuring compliance with legal requirements.
• Coordinate onboarding and offboarding activities.

Skills

HR administration

Onboarding coordination

Compliance management

Payroll processing

Tools

Personio

Job description

About the job

Location : London (5 days per week in the office)

Reports to : Head of People

Contract : Full-time, permanent

Flatpay is a fast‑growing fintech and now officially a unicorn, with ambitious plans for continued expansion. We believe in keeping things simple, for our customers and for our people.

We are looking for a HR & Onboarding Advisor to join our team. This is a hands‑on role focused on HR administration, onboarding, systems, and coordination. You will work closely with the Head of People to ensure a smooth, well‑structured employee journey.

What you'll do

HR Administration & Employee Lifecycle

• Manage the full employee lifecycle in Personio, including onboarding, contractual changes and offboarding.
• Maintain accurate employee records and audit‑ready personnel files in line with UK employment law.
• Draft offer letters, employment contracts, onboarding documents and standard HR correspondence.
• Carry out right‑to‑work checks, reference checks and ensure all compliance requirements are completed on time.
• Prepare monthly payroll updates and work closely with the Head of People and finance to ensure accurate and timely submissions.
• Help maintain and update HR policies, ensuring alignment with the UK Employee Handbook.

Onboarding & Offboarding

• Work in partnership with the Workplace Operations Manager to coordinate all onboarding and offboarding activities.
• Prepare new starter documentation, equipment requests and access set‑up, ensuring all operational steps are completed.
• Manage induction scheduling and ensure each new joiner has a clear, simple and consistent onboarding experience.
• Support offboarding tasks including communication, equipment return, system deactivation and documentation.

People Support & Coordination

• Serve as a first point of contact for day‑