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

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…