Flatpay ApS UK
HR & Onboarding Administrator
Greater London
Posted 2 days ago
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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
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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.
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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
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