You speak and write the Polish and English languages very well (Your English is good for internal use). You have worked in an international environment and you have proven customer service skills. Also you have an eye for detail and financial insight (work with numbers). You can set priorities and you ensure quality also during deadlines. Above all, you are a fast learner with analytical skills. You are willing to go the extra mile and can adapt quickly to new situations.
Basic knowledge of SAP is a plus. Good MS Office skills are a must, as is experience in dealing with potential problems.
Side note: If you speak French, do apply as well.