Senior C# / .NET Software Engineer - Traffic Tools (m/f)

Job description

We‘re the Yunex Traffic team, a global leader in intelligent traffic systems. We have been working on revolutionary technologies for the mobility of the future. We develop solutions for traffic management leading to greater traffic flow, safety, efficiency and environmental friendliness. The results of our work are perceived by the citizens in cities around the world. Who are we looking for? We're looking for an experienced Senior Software Engineer to help shape the future of our Traffic Tools portfolio. Working across modern .NET technologies, desktop applications, cloud-based services, and AI-assisted development workflows. You will play a key role in delivering innovative solutions that improve urban mobility and traffic management worldwide. What will be your responsibilities? You will be part of an international team developing innovative traffic control solutions and next-generation traffic engineering tools. Together with internal and external partners as well as international teams, you will continuously enhance our products and design new features for urban traffic planning and control . AI-Supported Development in everyday SDLC is integral to our workflow. We use tools such as GitHub Copilot CLI and Claude Code as productivity boosters, with validation, code reviews, and high quality standards. You will accelerate innovation by adopting next-generation traffic engineering technologies and building AI toolchains to modernize systems and clear technical debt. Your primary responsibility Agentic .NET development Use AI‑driven agentic engineering practices by configuring and optimizing agentic development environments, integrating autonomous agents into workflows, and actively leveraging AI tools to accelerate coding, debugging, documentation, testing, and operational tasks. You will mainly focus on the following two areas: .NET Microservices Development and maintenance Design, implement, and maintain backend microservices using .NET (8+), following clean architecture and cloud‑native principles. Desktop Application Development (.NET Framework 4.8) Develop new features, replace legacy components and maintain code quality of our Windows desktop application. Your secondary responsibilities Test Automation Engineering Design and implement acceptance / UI tests for the desktop application using modern testing frameworks and best practices. Act as an experienced practitioner who can introduce contemporary testing approaches, improve test reliability, and help shape a sustainable long‑term quality strategy. Configuration management Assist in maintaining and improving TeamCity and Gitlab build pipelines and release workflows. Operational Engineering Support vulnerability report handling, OSS clearing, dependency updates, and release compliance. Expert Technical support Serve as the technical escalation point for the most complex and critical issues occurring on the customer side. Diagnose and resolve deep technical problems within the desktop application, perform advanced debugging, and provide authoritative guidance to ensure rapid and high‑quality issue resolution. What do you need to qualify for the role? Practitioner‑level AI development experience gained through daily hands‑on work with these tools and technologies. Strong experience with microservices architecture (.NET 8+) and desktop backend development (.NET Framework 4.8). Deep technical expertise in the .NET framework, paired with a strong mastery of object-oriented design (OOD), standard design patterns, and clean code architecture practices Solid understanding of containerization (Docker) and orchestration (Kubernetes or similar). Familiarity with CI/CD pipelines (TeamCity, GitLab CI/CD). Experience with test automation frameworks. Strong ownership mentality and willingness to handle cross‑functional tasks. Curiosity and enthusiasm and strong interest in enhancing AI‑driven engineering workflows. Communicative and proactive team approach and positive attitude toward continuous improvement You can communicate in English ( you'll be working with colleagues from abroad on a daily basis) With joining us, among other things, you will get: Working on products that have a significant impact on people's daily lives. Up to 33 days of vacation. Working hours as you organize them (you should always be on call between 10 am and 2 pm). The opportunity to work from home for a better work-life balance Our company offers a flexible benefits plan through an online cafeteria system Where can you find us? In our modern offices just a short walk from the Zvonařka bus station on Škrobárenská Street. How do you apply? We can only accept online applications. Click the “Apply Now” button below to submit your application. About Us: We are a global leader in intelligent transport systems with more than 3,500 passionate employees who pioneer, develop, create, install and maintain innovative road traffic and mobility solutions all over the world. We make our roads smarter, safer and greener. The work we do enables cities, highways authorities and infrastructure operators to create a new world of mobility and makes cities more livable for everyone. Our solutions range from traffic lights, tolling solutions and tunnel management to software, AI applications and the intelligent networking of all road users. Our Commitment: At Yunex Traffic, the uniqueness of our people is our strength. Our people are at the heart of what we do and every voice, perspective and contribution is valued. The future of mobility needs people who think down different tracks and we empower our people to transform cities all over the world. Join us and make a difference too. See what we look like on our community website . Follow the latest news from our company on our LinkedIn profile . How do our colleagues see us? Check out their reviews on Atmoskop. Become a Traffic Transformer and help us to continue transforming towns and cities all over the world.