Senior Full-Stack Engineer (.NET/React) — Microservices & AI

Hitachi; Kraków; On-site; PLN 180,000 - 260,000; Full time

Job summary

Hitachi Energy Services SP. z o.o. in Kraków is seeking a Senior Full Stack Developer to build advanced software solutions for asset-intensive industries including energy, utilities, and mining.

You will join the Kraków-based Platforms Team to develop high-quality, scalable applications that influence plant-level systems, regional networks, and global operations. You will design and implement across front-end and back-end, using .NET and React, with modern tooling and AI-assisted development

Qualifications

• 6+ years of professional software development experience, including strong .NET (C#, Web API, Entity Framework) expertise.
• Proficiency in JavaScript/React and modern front-end tooling (Material UI, styled components; Vite a plus).
• Experience with microservices, containers, and distributed systems (e.g., Kubernetes, Docker, message queues)
• Strong understanding of testing practices, Agile methodologies, and modern DevOps concepts
• Fluent in English, with strong communication skills and the ability to learn and adopt new technologies quickly

Responsibilities

• Design, develop, and maintain high-quality software using the .NET technology stack
• Ensure code reliability through unit testing, clean coding practices, and code reviews
• Contribute to cross-disciplinary teamwork by actively collaborating toward shared product goals
• Work across front-end and back-end components, including React and modern JavaScript frameworks
• Participate in designing and maintaining microservices-based architectures and related technologies
• Apply and refine AI-assisted development techniques to improve productivity and quality
• Troubleshoot and enhance development environments, tooling, and system integrations
• Continuously deepen your technical expertise and understanding of the domain

Skills

6+ years experience

English fluency

Agile methodologies

DevOps concepts

Education

Bachelor's degree in CS/Software Engineering

Tools

React

Web API

Entity Framework

Docker

Kubernetes

Job description

Hitachi Energy Services SP. z o.o. in Kraków is seeking a Senior Full Stack Developer to build advanced software solutions for asset-intensive industries including energy, utilities, and mining.

You will join the Kraków-based Platforms Team to develop high-quality, scalable applications that influence plant-level systems, regional networks, and global operations. You will design and implement across front-end and back-end, using .NET and React, with modern tooling and AI-assisted development