Senior.Net developer - Remote (only for candidates based in Greece)

Senior .Net developer - Based in Greece only!

We challenge and innovate to connect people, businesses, and

communities across the world.

Delighting our customers and earning their loyalty drive us, and we experiment, learn fast and get it done, together.

With us, you can truly be yourself and belong, share inspiration, embrace new opportunities, thrive, and make a real difference.

We are seeking a highly skilled Senior .Net developer to join our team.

Key Responsibilities 

Develop, maintain, and enhance backend services and APIs using C# and .NET Framework / .NET Core 

Design and integrate internal and external RESTful Web APIs 

Implement authentication and authorization mechanisms based on OAuth2 / OpenID Connect 

Collaborate closely with solution architects and business stakeholders to deliver secure and scalable solutions 

Required Skills & Experience 

Strong proficiency in C# and .NET Framework / .NET Core (including .NET 6/8+) 

Proven experience in RESTful API development and third party integrations 

Solid knowledge of OAuth2, OpenID Connect, JWT, and related authentication flows 

Understanding of secure coding practices, API security, and data protection principles 

Proficiency with Git and modern version-control workflows 

Preferred / Nice-to-Have 

Familiarity with Open Banking standards (e.g., PSD2, Berlin Group) 

Experience with microservices architecture, CI/CD pipelines, and containerisation (Docker/Kubernetes) 

Knowledge of API testing and documentation tools (Postman, Swagger/OpenAPI) 

Exposure to event -driven architectures and message brokers (Kafka, RabbitMQ, etc.) 

What's in it for you:

Competitive pay, remuneration package

Career growth opportunities (Greece and Europe)

Access to learning resources and trainings.

Special employee offers and discounts.