Senior .NET Developer (Healthcare project)

Are you ready to work on a project that truly makes a difference in people’s lives? We are looking for a Senior .NET Developer to join our distributed team and help build cutting-edge healthcare technology.

At Sigma Software, we create innovative solutions for global customers, delivering high-quality software that meets the highest industry standards. Joining us means working in a supportive environment with flexible arrangements and opportunities for professional growth.

Be part of a meaningful, socially impactful project while enjoying the freedom to work remotely and the benefits of a collaborative culture.

Customer

Our client, a pioneering healthcare technology company, is embarking on an ambitious project to transform clinician workflows.

Project

The project is an innovative healthcare technology platform designed to support critical medical procedures and enhance patient care. It involves developing high-performance software solutions for real-time monitoring, logistics, and data processing in a highly regulated environment.

Responsibilities

• Design, develop, and maintain complex .NET-based applications

• Collaborate with cross-functional teams including engineers, QA, and domain experts

• Implement secure, scalable, and efficient solutions aligned with healthcare industry standards

• Participate in code reviews, architecture discussions, and technical decision-making

• Take ownership of features from requirements breakdown to deployment

• Deploy and monitor services in AWS cloud-native environments

• Handle production issues and incidents with accountability

Requirements

• 5+ years of experience in software development with strong OOP and system design skills

• Solid hands-on experience with .NET

• Understanding of software testing concepts and practices

• Strong knowledge of Domain-Driven Design (DDD) and complex domain modeling

• Strong knowledge of event-driven architectures (Kafka, RabbitMQ, MassTransit)

• Strong knowledge of event sourcing and related architectural approaches, including CQRS and materialized projections

• Experience working with agentic AI in development, or a solid understanding of the concepts with a strong willingness to quickly apply them in practice

• Expertise in cloud-native and DevOps practices (CI/CD, automation, monitoring)

• Experience with relational databases (PostgreSQL), EntityFramework, Marten

• Knowledge of non-functional requirements (performance, security, availability)

• Experience with containers (Docker, Kubernetes)

• Proficiency with observability tools (Grafana, Prometheus, or similar)

• Upper-Intermediate English level or higher

Personal profile

• Curious, proactive, and eager to learn and improve continuously

• Able to design and implement solutions that balance complexity and simplicity

• Comfortable giving and receiving feedback graciously and using it to improve

• Takes responsibility for commitments, identifies risks early, and ensures delivery

• Supports colleagues, learns from teammates, and contributes to a healthy team culture

• Works effectively in changing environments and adjusts when priorities shift

• Communicates clearly, collaborates well across disciplines, and explains work in an understandable way