Wrocław, Wrocław, Lower Silesian Voivodeship, Polska
Xebia sp. z o.o.
27. 3. 2026
Informacje o stanowisku
technologies-expected :
Python
SQL
about-project :
The project focuses on developing intelligent decision-making mechanisms for a large-scale auction and bidding platform. By combining predictive signals, system data, and AI-driven approaches, the system supports and optimizes business decisions across the ecosystem.
responsibilities :
designing and developing bidding and optimization strategies for CPC-based auction systems, including advanced objectives such as target ROAS,
optimizing auction mechanisms (ranking, pricing, filtering) to balance platform revenue, advertiser value, and marketplace stability,
building and maintaining offline simulation environments, including counterfactual simulations and auction replay systems, to safely evaluate algorithmic changes,
designing and implementing feedback loops and control mechanisms to ensure stable and robust system behavior under dynamic market conditions,
conducting advanced ecosystem-level analytics on large-scale datasets to identify nonlinear effects, equilibrium points, and systemic risks,
designing, executing, and analyzing complex experiments and causal inference studies, accounting for network effects and long-term system impact,
contributing to the evolution toward smart, autonomous bidding and auction optimization through data-driven initiatives and roadmap development.
requirements-expected :
proficiency in Python and SQL, with experience working on large-scale datasets, data analysis, statistical modeling, and algorithm prototyping,
experience working with Big Data environments or distributed data processing systems,
strong quantitative background in Mathematics, Statistics, Data Science, Optimization, Decision Science, or Operations Research,
solid understanding of optimization theory, including linear, nonlinear, constrained, and stochastic optimization,
knowledge of game theory and market mechanisms, particularly in competitive or auction-based environments,
experience designing and implementing algorithms under multiple objectives and constraints, considering ecosystem-wide impact,
strong analytical and system-level thinking, with the ability to reason about feedback loops, system dynamics, and equilibrium behavior and translate business goals into quantitative solutions,
ability to collaborate effectively in cross-functional, international teams and very good command of English (spoken and written),
work from the European Union region and a work permit are required.
offered :
Development budgets of up to 6,800 PLN
We fund certifications e.g.: AWS, Azure, ISTQB, PSM
Access to Udemy and Safari Books Online
Events and technology conferences
Technology Guilds
Internal training
Xebia Upskill
Private medical healthcare
MultiSport card - we subsidise a MultiSport card
Mental Health Support
Flexible working hours
B2B or employement contract
Contract for an indefinite period
benefits :
sharing the costs of sports activities
private medical care
sharing the costs of foreign language classes
sharing the costs of professional training & courses
