Personnel & Payroll Operations Specialist

RTB House
Warsaw +1 more
On-siteCareer-pivot friendly

Who this role is best for

Aimed at mid-level to senior HR professionals who coordinate international personnel operations and payroll processes.

Best fit for

  • Candidates with 3+ years managing employment contracts under Polish labor law and payroll coordination experience
    — “at least 3 years of experience in a similar role (specifically handling employment contracts under Polish labor law)”
  • Professionals who have worked with personnel documentation in foreign markets and understand multi-jurisdictional processes
    — “experience with personnel documentation in foreign markets will be an advantage”
  • Individuals comfortable with cross-functional collaboration, especially with accounting and HR teams
    — “cooperate with accounting offices on payroll-related matters”

Things to consider

  • The role requires a high level of attention to detail for managing legal and payroll documentation
    — “attention to detail and the ability to meet deadlines”

How to stand out

  • Emphasize experience managing international employment contracts and cross-border HR processes
    — “prepare and coordinate the flow of personnel documents (especially employment contracts) across Polish and international RTB House entities”
  • Highlight your ability to manage time tracking, leave settlements, and payroll coordination
    — “manage time tracking, attendance, absences, and the settlement of leaves and sick leaves”
  • Showcase your fluency in English with examples of written and verbal communication
    — “excellent command of English, both written and spoken (min. C1 level)”
  • Demonstrate your knowledge of Polish social security and tax regulations in your application
    — “knowledge of social security and personal income tax regulations on Polish market”
Pace · SteadyCollaboration · HighAutonomy · MediumDecision Impact · Team

Derived from job-description analysis by Serendipath's career intelligence engine.

What success looks like

  • managing payroll
  • coordinating hiring processes
Typical background
HR operationspayroll

Skills & requirements

Required

Payroll ManagementPersonnel DocumentationContract Management

Preferred

Additional Foreign Language

About the role

Original posting from RTB House via Greenhouse

Location: Warsaw

We Are:

RTB House is a next-generation performance demand-side platform (DSP) that uses proprietary Deep Learning AI algorithms to help brands grow. The company is the market leader in driving performance using Deep Learning across the entire purchase funnel.

Founded in 2012 and now operating in 90+ markets, RTB House has always been private-by-design. It embraces first-party advertising and a relentless approach to innovation. RTB House offers end-to-end Deep Learning-powered AdTech products and solutions to maximize conversion, drive new customer acquisition, create engagement, and fuel long-term demand for a global base of clients.

In 2026, RTB House launched rtb.com, a self-service platform specifically designed to allow small and medium-sized businesses and agencies to deploy auto-built creatives and maximize performance on any budget.

You Will:

prepare and coordinate the flow of personnel documents (especially employment contracts) across Polish and international RTB House entities;

coordinate the hiring process for new Employees and Associates;

participate in the creation, review, and updating of internal procedures;

coordinate the preparation of documentation related to work permits for foreign employees;

manage time tracking, attendance, absences, and the settlement of leaves and sick leaves;

cooperate with accounting offices on payroll-related matters;

support the preparation of internal reports, analyses, and summaries for business needs.

Desired Experience:

at least 3 years of experience in a similar role (specifically handling employment contracts under Polish labor law);

hands-on experience in payroll calculation;

excellent command of English, both written and spoken (min. C1 level);

experience with personnel documentation in foreign markets will be an advantage;

knowledge of an additional foreign language will be considered a plus,

practical knowledge of MS Office applications,

knowledge of social security and personal income tax regulations on Polish market, 

independence, good organizational skills, responsibility and teamwork skills, attention to detail and the ability to meet deadlines,conscientiousness and reliability in performing assigned duties.

We Offer:

An on-site job in very convenient location: office located next to the Wilanowska metro station;

Attractive salary;

Friendly collaborative atmosphere among professionals, with a strong respect for work-life balance principles.

Stable, long-term cooperation;

Opportunity to work within a dynamically growing international organization, striving to become a leader in Europe and worldwide;

Source: RTB House careers (Greenhouse)

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