Senior Business Analyst

🔸IMPORTANT NOTE 🔸 We’re looking for someone with a notice period of up to one month. Work mode: hybrid (1 day per week in the office) Location: Warsaw    Billennium is a global technology company with over 20 years of experience, committed to innovation and empowering businesses. As an employer, we offer a supportive, growth-focused environment where collaboration and creativity thrive. Join us to shape the future of technology together! About the Client Our client is a leading international bank delivering advanced digital solutions and enterprise systems supporting financial services. You will join a cross-functional IT team working on integration-heavy projects in a distributed systems environment. What you will do • Validate business requirements (functional and non-functional) in collaboration with internal stakeholders• Design system integrations using UML diagrams (use case, sequence, activity, component diagrams)• Prepare detailed integration specifications using tools such as Swagger• Collaborate closely with architects and developers to define technical solutions• Coordinate technical and project dependencies across multiple IT teams• Perform initial integration testing and support defect analysis• Participate in Agile ceremonies (SCRUM) and contribute to iterative delivery What we are looking for • Minimum 5 years of experience as a Business/System Analyst in IT projects• Strong experience in requirements analysis and system modeling• Good understanding of integration concepts (Web Services, Microservices, SOA)• Practical knowledge of UML and experience with tools such as Enterprise Architect or PlantUML• Experience working with MS SQL• Understanding of distributed systems architecture• Higher education degree (IT, economics, or related fields)• Good English communication skills (B2/C1, spoken and written) Nice to have • Experience in banking or insurance projects• Familiarity with Kibana and Grafana Soft skills • Willingness to learn and continuously develop skills• Strong communication and teamwork abilities• Good organization, independence, and attention to detail Perks and benefits • Comprehensive benefits – enjoy Udemy for Business, private medical care, Multisport card, veterinary package, language lessons, and shopping vouchers• Flexibility – adaptable working hours and remote/hybrid work options to suit your lifestyle & location• Career growth – access to professional development opportunities and partnerships with Microsoft, AWS, Snowflake, Salesforce & more• Global collaboration – work with a diverse, international team• Innovative environment – be part of a forward-thinking and growth-oriented workplace• Engaging community – participate in team-building events, hackathons, and CSR initiatives• A pleasant surprise to start your journey with us in the form of a welcome pack Recruitment process • HR call• Interview with the dedicated client• Final decision / feedback   👉 Sounds interesting? Click “Apply” and let’s talk