.NET Developer (Regular) Financial Technology Sector | Hybrid Work (Łódź, Poland)

Work Model: Hybrid (On-site 2 times a month in Łódź) Role Overview & Responsibilities We are seeking a skilled Regular .NET Developer to join our team and build high-quality IT solutions for the financial sector. In this role, you will be responsible for: * Conducting design and implementation work in IT systems (including Oracle-based technologies). * Collaborating with end/business users to gather and analyze data requirements for new solutions, specifically detailing general tasks and business concepts. * Actively participating in internal software testing. * Creating and updating technical and functional system documentation. * Cooperating in the development of new solutions and defining technical directions. * Implementing actions to improve data quality in systems and applications exporting data to the data warehouse. * Supporting the review of technical specifications, as well as project, technical, and administrative documentation prepared by third-party vendors. Key Requirements Absolute Must-Haves: * Very good knowledge of the .NET framework. * Ability to work with Large Language Models (LLMs). * Strong teamwork skills combined with high independence. Experience & Technical Skills: * Minimum 3 years of programming experience in IT projects using C#, .NET (including v4.5), WCF, SQL, SQL Server Integration Services (SSIS), HTML, and ASP.NET MVC. * Proficiency in JavaScript, jQuery, jQuery UI, HTML5, and CSS3. * Familiarity with Visual Studio Ultimate 2013. * Knowledge of unit testing and the test automation process. * Proven experience in developing web applications. * Strong understanding of Object-Oriented Programming (OOP) principles and design patterns. * Practical experience designing and programming IT systems for financial institutions (or similar enterprise environments in terms of scale, complexity, and quality standards). Soft Skills & Competencies: * High degree of independence, goal orientation, and consistency in task execution. * Excellent work organization, fast learning ability, and teamwork skills. * Knowledge of business and system requirements analysis, specifically analytical thinking and precise communication. * Ability to effectively cooperate with business clients, internal stakeholders, and external suppliers. * High communication skills, natural inquisitiveness, and negotiation abilities. * English proficiency sufficient for freely working with technical documentation and literature. Nice to Have * Understanding of basic UX design principles. * Familiarity with AGILE and XP methodologies. * Knowledge of PL/SQL and Oracle databases. * Practical knowledge of at least one CASE tool (e.g., Sparx Systems Enterprise Architect) and UML. * Experience working in a matrix organizational structure. * Familiarity with ITIL best practices.