Personnel & Payroll Operations Specialist

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;