We are seeking a Senior .NET Developer to lead the implementation of the back-end for front-end (BFF) layer for a mobile application designed for corporate customers.

As the technical lead, you will work closely with cross-functional teams, supervise .NET developers and ensure the delivery of a robust, scalable solution.

Responsibilities

• Own the design, implementation, testing, deployment and maintenance of the BFF layer

• Serve as the primary contact for cross-team communication, information gathering and issue escalation

• Supervise and mentor two .NET developers within the team

• Ensure high performance and scalability through advanced use of asynchronous programming patterns

• Integrate core services and troubleshoot middleware issues across .NET 8, ASP.NET Core, OpenShift, Redis and MS SQL Server

• Design and develop RESTful APIs with a strong understanding of HTTP methods, status codes and API versioning

• Write unit and integration tests for middleware components using frameworks such as xUnit

• Coordinate CI/CD processes, ideally leveraging Azure DevOps

• Collaborate with Solution Architects, Business Analysts, QA testers and Mobile Developers throughout the SDLC

Requirements

• Advanced proficiency in C# and .NET, including .NET 8 and ASP.NET Core, with a minimum of 3 years of working experience

• Knowledge of asynchronous programming patterns to ensure high performance and scalability

• Background in middleware development, integrating core services and troubleshooting issues with OpenShift, Redis or MS SQL Server

• Expertise in API design and development, including RESTful APIs, HTTP methods, status codes and API versioning

• Experience as a back-end Tech Lead or Team Lead, supervising developers and providing technical guidance

• Skills in writing unit and integration tests for middleware components using xUnit or similar frameworks

• Capability to coordinate CI/CD processes, preferably in Azure DevOps

• Proficiency in Greek language and English at B2 level

Nice to have

• Familiarity with security protocols such as OAuth2 and JWT for authentication and authorization

• Experience with logging and monitoring tools like Azure Application Insights or Dynatrace

• Understanding of Azure cloud and OpenShift environments

We offer/Benefits

For your comfortable work:

• Remote and hybrid work opportunities

• Option to work from our centrally located office in Athens

• Corporate laptop provided

• Private health insurance

• Meal vouchers / restaurant tickets

• My Benefit card (264€/year)

• Monthly public transportation card

For your growth:

• Global and diverse client portfolio, large-scale projects, and trendy technologies

• Diverse multicultural, multi-functional, and multilingual work environment

• Opportunity to contribute to internal and open-source products

• Outstanding career development opportunities with a transparent career path and a roadmap to accelerate your journey

• Possibility to create a Personal Development Plan from the first day in the company

• Numerous opportunities for self-development: hard & soft skills internal training courses, mentoring programs, and unlimited access to LinkedIn Learning courses, external e-Libraries

• Certification opportunities

• Knowledge-sharing with colleagues from EPAM's global tech and non-technical communities

• Language courses