C# .Net Developer

Project description: Our team develops and maintains custom software supporting healthcare operations and clinical workflows. The platform includes backend APIs, system integrations, data-processing services, and AI-enabled applications. Our current applications are primarily written in Python using FastAPI, Pydantic, PyTorch, and medical-imaging libraries.

The platform runs in a containerized AWS environment using services such as Lambda, ECS, SageMaker, API Gateway, S3, SQS, Event

Bridge, DynamoDB, and CloudWatch. We use Microsoft SQL Server for relational data, Docker for local development and packaging, AWS SAM and Cloud

Formation for infrastructure as code, and GitHub Actions for CI/CD.

We are expanding our stack by taking ownership of additional applications written in C# and .

NET. The role will focus on maintaining and modernizing these applications, developing new capabilities, and integrating them with our existing Python and AWS platform. Reliability, security, observability, and maintainability are key priorities across all our systems.

Industry: Healthcare

Location: Kraków / Hybrid/ Remote from Poland

Your daily work will include:

Taking ownership of existing C#/.

NET applications and developing new backend services, APIs, and integrations

• Maintaining and modernizing applications while ensuring compatibility with existing workflows
• Integrating C# services with our Python, FastAPI, SQL Server, and AWS-based platform
• Building and supporting containerized, event-driven services using Docker and AWS
• Investigating production issues through debugging, monitoring, and log analysis
• Writing automated tests and improving application reliability, security, and performance
• Participating in code reviews, architecture discussions, and continuous technical improvements
• Collaborating with team members and stakeholders to translate requirements into maintainable software
• Using GitHub, GitHub Actions, and infrastructure-as-code tools for development and CI/CD
• Team & Collaboration4 from Montrose including 2 developers, 1 SRE and a QA + 2 on the client’s side (PM + Architect)

Regular meetings:daily standupsbiweekly sprint planning weekly refinementsweekly stakeholder meeting with people from the clinic

Communication via email and Webex chat

Working hours: usually 9:30–17:30 CET Qualifications:

Strong knowledge of C# and .

NET

• Experience developing RESTful APIs and backend services
• Experience working in Linux environments
• Experience with AWS and cloud-based applications
• Familiarity with Python
• Experience with Microsoft SQL Server
• Knowledge of Git and collaborative development workflows
• Familiarity with Docker and containerized applications
• Strong debugging, testing, and problem-solving skills
• Nice to have:

Healthcare or other regulated-industry experience

Familiarity with medical imaging

Perks, Snacks & Everything Nice :)

Work Environment & Flexibility

• Top-quality equipment to support your work
• Flexible working hours
• Remote work option
• Exciting and challenging projects with international teams
• Learning & Development
• English lessons with a native speaker
• Dedicated training budget for personal and professional growth
• Health & Well-being
• Private medical insurance
• Multisport card Air-conditioned workspace
• Showers available at the officeFood & Comfort
• Lunches from Kraków’s top restaurants delivered to the office or a refund of the budget allocated for itFully stocked kitchen with drinks, fruit, and snacks
• Lifestyle & FunNo dress code- dress comfortably
• Chillout area with bean bags, therapy balls, Play
• Station 4, Nintendo Switch 2 + games, stretching area, and pull-up barRegular team events
• Additional Perks
• Indoor bicycle parking