Middle Full-Stack Software Engineer (.NET + React

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We are looking for a Middle Full-Stack Engineer (.NET + React) to join a project for our US-based partner, a digital healthcare company providing remote cardiac monitoring solutions to clinics and hospitals.

The product is a web-based application that enables healthcare professionals to manage patient monitoring studies and access clinical information. You will work across the .NET backend and React-based web interface, delivering new functionality, improving existing features, and contributing to the security, reliability, and scalability of the product.

C#

.NET

Entity Framework Core

React

HTML5

CSS3

REST APIs

Microservices

MS SQL Server

AWS

AWS ECS

Lambda

Kafka

Docker

CI/CD

You’ll join a cross-functional team of .NET developers, QA engineers, an Automation QA Engineer, and a Team Lead. You’ll work closely with the team on developing and improving the product.

We are committed to implementing high standards in the technology industry, and it is the fundamental mission of our work. To achieve this goal, the company and all its members are constantly evolving.

Each of us has the opportunity to contribute to the product, the company, the team, the industry, and our personal development. At Techstack, you have the option to choose from various growth opportunities that align with your interests:

• - meetups, where you can share your knowledge and develop simultaneously by sharing your experiences within the company and local technical communities;
• - roles such as a mentor or a technical lead. In any of these roles, you will assist junior professionals and share your knowledge and experiences with them.
• - participation in our technical Guilds, where you can discuss technical solutions, approaches, and industry trends.

All of these elements contribute to shaping the culture and expertise within both our team and the company as a whole.

• Develop and maintain features across .NET backend services and a React-based web interface.
• Build reusable UI components and integrate them with REST APIs.
• Develop and maintain REST APIs, integration services, and scalable, stateless backend components.
• Work with MS SQL Server, PostgreSQL, and Entity Framework Core.
• Implement and support asynchronous service communication using AWS SQS, RabbitMQ, or Kafka.
• Apply secure development practices, including authentication/authorization, OIDC/SSO, and API security.
• Work with AWS-hosted services and support Docker-based deployments and CI/CD pipelines.
• Investigate and resolve issues across the frontend and backend.
• Participate in code reviews and technical discussions.
• Collaborate with developers, QA engineers, and project stakeholders.
• Maintain relevant technical documentation.
• Contribute to the security, reliability, scalability, and maintainability of the application.

• 3+ years of professional experience with C# and .NET
• Strong hands-on experience with ASP.NET Core, REST APIs, Entity Framework Core, and microservices
• Working knowledge of HTML5, CSS3, and responsive web interfaces
• Solid SQL skills and experience with MS SQL Server and PostgreSQL
• Hands-on experience with AWS-based applications and containerization
• Experience with integrations and message queues, with an understanding of asynchronous communication
• Understanding of authentication and authorization, OIDC/SSO, secure coding, and API security
• Ability to translate requirements into technical solutions
• Strong communication and problem-solving skills, with a sense of ownership

• Stable and long-term position in an experienced team.
• Broad opportunities for professional and career growth, including professional challenges that encourage personal development,…