Flatpay is one of Europe's fastest-growing fintech companies and we've recently launched in the UK.

Role: HR Administrator
Location: 5 days a week - London, White City

The HR Administrator is the operational backbone of the Flatpay UK People team, keeping onboarding, records, and employee queries running accurately at pace.

Responsibilities

Coordinate end-to-end onboarding logistics for up to 100 new starters per month, including accommodation, catering, and travel for multi-day cohort programmes
Create and configure new starter profiles on Personio ahead of day one, ensuring all data is accurate, complete, and compliant
Collect and verify pre-employment documentation, including right to work, signed contracts, and new hire information
Draft and issue contract variation letters for role changes, promotions, salary adjustments, and department transfers, with same-day HRIS updates
Process leavers in Personio, coordinating with payroll to ensure accurate final pay and completing all off-boarding steps on time
Serve as first point of contact for standard employee queries, providing clear, accurate answers grounded in the Employee Handbook
Maintain onboarding trackers, employee records, and people data accurately across the full employee lifecycle

Skills & Attributes

Exceptional organisation and attention to detail, comfortable managing high volumes simultaneously
Clear, professional communicator, written and verbal, with the confidence to give employees straightforward answers on policy and process
Comfortable working to tight deadlines in a fast-moving, high-growth environment
Calm under pressure, able to prioritise without dropping the ball
Collaborative and reliable, understands that clean admin is the foundation everything else is built on

Our Values

At Flatpay, how we work matters as much as what we achieve.

Happy Humans - We bring energy to our work and create teams people enjoy being part of.
No Assholes - We perform at a high level while treating colleagues and customers with respect.
It's Our Business, Own It - Everyone takes responsibility and manages their work like it's their own business.
Start With No - We challenge ideas, think commercially and focus on what truly creates value.
Sky-High Ambitions - We set bold goals and expect people to keep raising the bar.
The Best Argument Wins - Titles don't decide outcomes. We debate openly to reach the best decisions.

Background & Requirements

1 to 2 years of administrative experience in a fast-paced environment; HR experience is an advantage but not required
Demonstrably organised and detail-focused, able to give examples of managing high-volume, time-sensitive tasks accurately
Confident using systems and technology; prior HRIS experience (Personio, HiBob, or similar) is a plus but not essential
Fluent in English
Right to work in the UK (unfortunately we can't offer visa sponsorship right now)

Hiring Process

Application Review – Our Talent Team reviews your CV to assess experience and potential fit
Talent Screen (20 to 30 minutes) – A call to understand your background, organisational approach, and why this role interests you
Manager Interview – A conversation with the Senior People Partner to go deeper on experience and culture fit
Offer

Flatpay ApS UK

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