Senior .NET Software Engineer

Job Description

Our client is an established FinTech software provider with over 19 years of experience, supporting financial institutions across Europe, Asia, and other global markets. With a team of specialists across three continents and part of a billion-dollar technology group, the company develops secure and scalable banking platforms used by regulated financial institutions worldwide.As a Senior .NET Software Engineer, you will design and develop mission-critical financial systems powering digital banking and payment solutions used by international clients. Responsibilities:Design and implement backend systems and platform components using C# / .NET / .NET Core;Analyze business requirements and translate them into robust system architecture and technical solutions.Develop and maintain high-performance APIs and backend services;Ensure data integrity, system reliability, and high-availability performance;Write, test, debug, and maintain complex software components;Produce technical documentation, including system specifications and API documentation;Ensure software complies with industry security standards (including OWASP);Participate in code reviews and engineering best practices;Provide guidance and technical leadership to other developers;Collaborate with product, architecture, and client teams across the full software development lifecycle. Requirements:BSc or MSc in Computer Science or a related field;4+ years of professional experience in .NET / C# software development;Strong knowledge of .NET Core and modern backend architectures;Experience developing mission-critical or high-availability systems;Strong experience with relational databases and SQL;Deep understanding of software design patterns;Experience working with Git and CI/CD tools (DevOps, Jenkins, Bamboo);Strong knowledge of EU regulations, including DORA and GDPR;Strong problem-solving and debugging skills;Excellent communication and collaboration abilities;Fluent written and spoken English. Nice to HaveExperience developing banking or payment systems;Knowledge of financial or accounting terminology;Experience with OAuth2 / OpenID Connect identity systems;Experience with Azure cloud environments;Experience with Docker or containerized deployments;Familiarity with Agile development (Scrum / Kanban). The Employer OffersA senior-level engineering role with real ownership and technical influence;Competitive salary aligned with experience and European FinTech benchmarks;Annual performance review and bonus system;Monthly salary: 4,6005,100 gross + performance bonusesAdditional private health insurance after 6 months;21 vacation days per year and free parking in Vilnius office;Opportunity to travel internationally (including Cyprus team visits);Long-term growth opportunities as the platform and team expand;Collaborative, professional team working on complex, real-world challenges.