The Digital & Data department of Íslandsbanki is a collaborative group of software development professionals who work together following best practices and processes to deliver high-quality software solutions and capabilities.We believe in agile methodologies and cross-team synergy in product ideation and deliveryWe reach our development goals by encouraging team autonomy, employing a modern technology stack and automated processes, deployment pipelines, testing, and quality gates.Who are we looking for?Our Master Data solution development is a foundational pillar of our organization’s data strategy, It enables the creation and maintenance of a single source of truth across systems, ensuring consistency, accuracy, and trust in our data and provides critical functionality in our customer engagement efforts.We are seeking a positive senior C# developer with a proactive mindset and a strong sense of ownership. This role demands a self-driven individual who brings positivity, energy, clarity and commitment to complex development challenges. The ideal candidate combines deep technical expertise with a collaborative spirit to a team of profsessionals focusing on delivering high-impact master data and integration solutions in a financial services environment.You’ll be part of a team that values initiative, continuous learning and mutual support where your contributions directly shape the success of our data-driven strategy.Experience in data management is preferred so is experience with event-driven architecture. Familiarity with Karate testing frameworks and Kubernetes technologies will be considered an advantage.Responsibilities and duties:Working with the team on designing, developing and maintaining master data solutions and their integrations.Act as a senior engineering representative in development team activities.Participate in product development through cross team collaboration.Designing software for automatic testability, recoverability from failures, with built in privacy and security.Create, maintain and document software patterns and cross functional libraries.Foster a positive team dynamic and support the growth of your peersQualifications5+ years of experience as software developer or engineer is required.Strong experience with .Net Core/C#, SQL Server, Git a mustExcellent English verbal and written communication skills and a good sense of humorExperience with Kubernetes, Docker, Azure DevOps preferredAn urge to automate everything, RESTful API first development, data and event-driven architectures.Experience in test automation is a plus.Excellent programming, problem-solving and analytical skills.Experience working in Banking or Fintech is a plus.WHAT ARE PERKS AND BENEFITS:Self-development:Upskilling trainingsUp to 10% of your week dedicated to self-developmentConference and education budget – you name events!Physical wellbeing:Multisport cardHealthcare planLife insurance policyRestaurant pre-paid cardOn-site restaurant and fully equipped kitchen including healthy snacks and breakfasts/coffee/refreshmentsWork arrangement:140-155 PLN/hr on B2B (EC is an option too)25 days 100% paid time off (B2B)Premium hardware (PC, screens, headphones)Company phoneFlexible work schedule, emphasis on work-life balanceRemote work model. But we ask you to participate in 3-day all team workshops that happen in general every 3 months.Modern office in the Center of Warsaw in CIC, offering yoga, game and wellness rooms, rooftop terrace, children's playroom, events and networkingOccasional business travel to Iceland with some extra days on-site to visit the islandSocial events and team building activities