TL;DRWho: Product OwnerEmployment Type: B2B Framework AgreementSalary range: Up to 140 PLN/hStart date: ASAPEstimated project length: 6 months- 1 year.Company: Software House Who we are:We are Inspeerity, a modern software house, providing software development, consultancy, and maintenance services. We specialize in full stack development – from defining project requirements, to designing, building, and deploying software applications for web, backend, enterprise and mobile. We are crazy about technology, serious about people.About the role:We are looking for a Product Owner who can take ownership of a modernization project - Building from scratch application based on existing legacy system which collects financial data from an international dealer network and provides advanced analytical views.Your mission will be to guide the product through the full modernization lifecycle: understanding legacy logic, defining future capabilities, coordinating with engineering teams, and ensuring the new system meets all business expectations while eliminating old constraints.What you’ll be doing: Owning the product vision for the system rewrite, ensuring the modern version preserves critical business rules while enabling new improvements. Analyzing and documenting existing business logic from the legacy application and translating it into clear, actionable requirements. Creating and managing a highly detailed backlog: user stories, acceptance criteria, edge cases, integration needs, and data-handling scenarios. Leading discovery and alignment workshops with stakeholders to gather needs, validate assumptions, and define future system capabilities. Managing documentation (functional, technical, and legacy-to-modern mappings) using JIRA, Confluence, Miro, and similar tools. Identifying risks, dependencies, and potential gaps resulting from legacy behavior or unclear historical requirements. Coordinating delivery timelines, supporting sprint ceremonies, and ensuring smooth progress throughout the modernization roadmap. You will be the best fit if you have: 5+ years of experience as a Product Owner or similar role in software development projects. Proven experience working with complex enterprise systems, ideally involving legacy modernization or critical business logic. Strong understanding of Agile methodologies (Scrum, Kanban). Ability to read, understand, and translate complex business rules into clear product requirements. Experience in preparing both functional and technical documentation. Excellent communication skills and experience in multi-stakeholder environments. High attention to detail, analytical mindset, proactiveness, and ownership attitude. Very good command of English (B2+ or higher) in both spoken and written communication.  All nice things we can offer: B2B Framework Agreement. Remote work or working from our Bialystok, Warsaw, Rzeszów offices. It's up to you! Great working conditions and the best equipment, whether you need a Dell or a MacBook, your choice. And most important...You'll work with experienced, committed people who will appreciate you, your skills and knowledge and give you support when you need it.