Mid .NET Software Engineer

The Role

Join our team as a Mid-level Backend .NET Engineer and play a key role in developing and maintaining a complex, high-performance web application for a top US healthcare provider. This involves a significant overhaul of the existing system, along with the development of new and improved features.

This collaborative role involves close partnerships with UX/UI Designers, Front End Developers, and Product Managers to ensure seamless integration and deliver exceptional solutions. Your expertise will be crucial in building robust, scalable, and secure server-side solutions that power the application.

What you will do

• Design, build, and maintain robust backend services using C# and .NET 6+

• Develop and consume RESTful APIs and support data processing pipelines

• Write clean, maintainable, and testable code following best practices

• Optimize existing features and improve performance and scalability

• Participate in code reviews, technical discussions, and system design sessions

• Collaborate with cross-functional teams, including frontend developers, DevOps engineers, and product managers

• Enable healthcare-specific use cases such as:

• Care coordination across multiple providers

• Claims assistance and benefit utilization support

• Mental health resource delivery

• Healthcare navigation tools

Requirements

• 2–5 years of experience working in backend development with C#/.NET
• Solid understanding of REST APIs, relational databases (SQL Server or similar), and API versioning
• Experience with microservice-based architecture
• Experience with LinQ, Dapper, Entity Framework, and asynchronous programming
• Familiarity with unit and integration testing frameworks as xUnit or NUnit
• Experience using version control systems (Git/GitHub)
• Understanding of basic cloud concepts (AWS)
• Comfortable working in agile environments
• Strong communication and problem-solving skills
• Proven ability to lead and mentor other developers
• Detail-oriented with a focus on delivering high-quality code
• Ability to work independently and collaboratively in a fast-paced environment

Nice to have

• Exposure to messaging systems (e.g., Kafka, RabbitMQ, Azure Service Bus) and Event Driven Architecture
• Basic knowledge of Docker and containerized development
• Knowledge of Kubernetes and Terraform
• Experience working in healthcare or regulated industries
• Familiarity with OAuth 2.0 and OpenID Connect
• Multilingual software development experience

What we offer

• Hybrid/flexible working model and flexible working hours
• Private Medical and/or Health Insurance (location dependent)
• Length of Service Awards
• Referral programme
• The option of a cafeteria package, meal tickets, or team lunches (location dependent)
• A culture of continuous growth, supported by our People Lead system and various training resources for your personal development
• Agile mindset, simplified processes, and a great atmosphere where commitment and autonomy are celebrated
• A community-first mindse,t working with talented people across technology products and consulting
• Charity events and programs

(*) As we hire permanent employees for this role, we offer remote opportunities only in Romania, Lithuania, and Hungary.

Additional benefits based on location:

Hungary

Extensive benefit package: SZÉP card (a multipurpose cash replacement item for accommodation, meal, leisure & entertainment purposes)

Lithuania

Discount benefits platform, the opportunity to work from abroad (max. 60 days per annum)

Romania

Bookster library subscription, and the opportunity to work from abroad (max. 60 days per annum)

About Us

Zenitech is a leading technology solutions provider dedicated to reshaping the global digital landscape. Headquartered in the UK, Zenitech operates internationally, with offices in Lithuania, Romania, and Hungary.

We use a bespoke approach depending upon where the client is on their digital journey, comprising a combination of access to dedicated R&D labs, technology implementation advice, and specialist nearshore development talent. As an international community of individuals who are open to learn from each other, we collectively define and input into the digital future of the clients’ businesses.

Why Zenitech?

• Impactful Projects: Drive meaningful change through digital transformation projects and have an opportunity to make an impact on many different industries.
• Collaborative Culture: Be part of a diverse, inclusive team committed to growth, innovation, and continuous learning.
• Professional Growth: Zenitech supports continuous learning and development through the People Lead system, helping you advance your skills and career.

Diversity and Inclusion

Zenitech celebrates diversity in all its forms. We aim to create an inclusive environment where everyone feels valued for their unique contributions and perspectives. If you require any adjustments during the application process, please let us know—we’re here to help. Our commitment to diversity, equity, inclusion, and belonging can be found here.