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.CustomerOur client, a pioneering healthcare technology company, is embarking on an ambitious project to transform clinician workflows.ProjectThe 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.ResponsibilitiesDesign, develop, and maintain complex .NET-based applicationsCollaborate with cross-functional teams including engineers, QA, and domain expertsImplement secure, scalable, and efficient solutions aligned with healthcare industry standardsParticipate in code reviews, architecture discussions, and technical decision-makingTake ownership of features from requirements breakdown to deploymentDeploy and monitor services in AWS cloud-native environmentsHandle production issues and incidents with accountabilityRequirements5+ years of experience in software development with strong OOP and system design skillsSolid hands-on experience with .NETUnderstanding of software testing concepts and practicesStrong knowledge of Domain-Driven Design (DDD) and complex domain modelingStrong knowledge of event-driven architectures (Kafka, RabbitMQ, MassTransit)Strong knowledge of event sourcing and related architectural approaches, including CQRS and materialized projectionsExperience working with agentic AI in development, or a solid understanding of the concepts with a strong willingness to quickly apply them in practiceExpertise in cloud-native and DevOps practices (CI/CD, automation, monitoring)Experience with relational databases (PostgreSQL), EntityFramework, MartenKnowledge 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 higherPersonal profileCurious, proactive, and eager to learn and improve continuouslyAble to design and implement solutions that balance complexity and simplicityComfortable giving and receiving feedback graciously and using it to improveTakes responsibility for commitments, identifies risks early, and ensures deliverySupports colleagues, learns from teammates, and contributes to a healthy team cultureWorks effectively in changing environments and adjusts when priorities shiftCommunicates clearly, collaborates well across disciplines, and explains work in an understandable way