Senior C# Developer

<p><b>Location:</b></p>Krakow, Lesser Poland, Poland<p></p><p><b>Job ID:</b><span> </span></p>R0094378<p></p><p><b>Date Posted:</b></p>2025-07-07<p></p><p><b>Company Name:</b></p>HITACHI ENERGY SERVICES SP. Z O.O.<p></p><p><b>Profession (Job Category):</b></p>Engineering &amp; Science<p></p><p><b>Job Schedule: </b></p>Full time<p></p><p><b>Remote:</b></p>No<p></p><p><b>Job Description:</b></p><p><span><span>We are creating from scratch </span><span>new</span><span> industrial IoT platform which will be used to provide </span><span>best in class</span><span> </span><span>monitoring</span><span> software for Power Grids. Our system is mission critical to keep lights on. </span><span>More details can be found here: </span><span><span>https://www.hitachienergy.com/products-and-solutions/grid-and-generation-management-network-manager/network-manager-wide-area-monitoring-system-wams</span></span></span><span> </span></p><p><span><span>Since </span><span>project</span><span> is </span><span>creating</span><span> from scratch, we are using </span><span>cutting edge</span><span> technologies </span><span>on practice not only in</span><span> paper. In daily work you will be able to get hands on experience on </span></span><b><span>containerization</span></b><span><span>, </span></span><b><span>Kubernetes (k8s)</span></b><span><span> and system designed in full fledge </span></span><b><span>microservice architecture</span></b><span><span> with all </span><span>it</span><span> benefits and drawbacks. We cannot promise you that this will be </span><span>easy</span><span> ride, but it will be for sure fun one.</span></span><span> </span></p><p><span><span>Concepts like </span></span><b><span>scalability</span></b><span><span>, </span></span><b><span>reliability, and availability</span></b><span><span> are the key </span><span>base</span><span> so it </span><span>is required to</span><span> have basic knowledge about how they can be achieved in </span><span>microservice</span><span> world.</span></span><span> </span></p><p><span><span>Main message bus and event platform in project is </span></span><b><span>kafka</span></b><span><span> which in our case is put on the stress of millions of messages per second. </span></span><span> </span></p><p><span><span>Low level system components are written in </span></span><b><span>C#</span></b><span><span>.</span></span><span> </span></p><p><span><span>Quality is unquestionable so we constantly invest in test automation, starting from </span></span><b><span>Unit Test</span></b><span><span> level which are written in language in which microservice is written, through </span><span>component</span><span> and system level, ending on E2E Test which are automated in </span></span><b><span>Python</span></b><span><span> using </span></span><b><span>PyTest</span></b><span><span>. Hands on experience in Python and </span><span>PyTest</span><span> will be </span><span>plus</span><span>, but if you do not have any experience with Python and would like to learn it </span><span>it’s</span><span> fine too.</span></span><span> </span></p><p><span><span>Our tech stack and tools </span><span>include</span><span> .NET 6, REST API, SLQ (PostgreSQL, SQL Server), Git, Azure DevOps, Kafka, Docker, Kubernetes, Prometheus.</span></span><span> </span></p><p></p><p><b><span>How You Will Make An Impact</span></b> </p><p><span><span>As a Senior C# developer you will join the team in Krakow, working closely with colleagues from Sweden and US. With excellent software engineering skills and can-do </span><span>culture</span><span> you will be a part of our global group developing industrial IoT platform.</span></span><span> </span></p><ul><li><p><span><span>Achieve</span><span> business goals through designing and developing code in the .NET technologies</span><span>.</span></span><span> </span></p></li></ul><ul><li><p><span><span>Design, develop and maintain microservices </span><span>architecture</span><span> for </span><span>b</span><span>ack</span><span>-end.</span></span><span> </span></p></li></ul><ul><li><p><span><span>Participate in code review</span><span>.</span></span><span> </span></p></li></ul><ul><li><p><span><span>Troubleshooting and bug fixing for all issue discovered during E2E testing</span></span><span> </span></p></li></ul><ul><li><p><span><span>Share your experience and skills with other team members</span><span>.</span></span><span> </span></p></li></ul><ul><li><p><span><span>Proposing and elaborating with other team </span><span>members</span><span> how to improve code quality, </span><span>performance</span><span> </span><span>and stability</span><span>.</span></span><span> </span></p></li></ul><ul><li><p><span><span>Work closely with Product Owner, QA engineers to ensure successful project delivery</span></span></p></li></ul><p></p><p><b>Your background</b></p><ul><li><p><span><span>Bachelor's degree (B. S.) from four-year college or university in computer science, information sciences or a