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 Have

• Experience 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 Offers

• A 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: €4,600–€5,100 gross + performance bonuses

• Additional 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.

If you’re ready to build FinTech systems that scale and matter, let’s talk.