AfinIT - Software Engineer with .NET Experience

About the team

Our Client is the software engineering team behind mission-critical, high-availability systems used by international customers across Europe, North America, Africa and the Middle East. Our team of developers works closely with project managers, support engineers and on-site technicians to keep complex, 24/7 operations running smoothly. We're currently investing heavily in software stabilization, CI/CD automation and modernized test environments — a great time to join.

The role

We're looking for a Software Engineer for a hands-on role spanning software maintenance, customer support, systems integration and configuration across a diverse portfolio of international sites. You'll take ownership of maintaining our installed base — troubleshooting production issues, performing root cause analysis and coordinating with stakeholders — while also driving integration projects that connect our software with third-party industrial systems.

What you'll do

• Serve as a key maintenance engineer for business-critical applications, diagnosing and resolving production incidents (performance, data and workflow issues)
• Perform root cause analysis on complex, multi-system issues and implement lasting fixes
• Lead technical integration projects, building and maintaining connectors between our software and third-party industrial equipment
• Configure high-availability and redundancy setups; provide 2nd/3rd-line support across our application suite
• Work with industrial communication protocols (e.g. OPC UA) and message brokers to enable real-time data processing
• Produce technical documentation, contribute to the internal knowledge base and support continuous-improvement initiatives

• 3+ years in software engineering, systems integration or technical support — ideally in an industrial, logistics or mission-critical 24/7 environment
• Strong debugging and root cause analysis across application, database, network and protocol layers
• Excellent written & verbal communication; comfortable with international customers and vendors
• Bachelor's/Master's in Computer Science, Software Engineering, Industrial Automation, or equivalent experience

Nice to have:

• Experience in industrial, logistics or transportation technology
• Familiarity with industrial control systems, SCADA or PLC integration
• ITIL or similar service-management experience
• Knowledge of French (spoken & written) is a must
• DevOps/CI-CD and infrastructure-as-code familiarity

Tech you'll work with:

• Languages & Frameworks: C# (.NET), Python, PowerShell / Bash
• Data: SQL Server, PostgreSQL, ETL processes, real-time & time-series data
• Infrastructure: Windows Server, Linux (RHEL/CentOS), VMware/Hyper-V, VPN/RDP/SSH
• DevOps & Tooling: GIT (GitLab/GitHub), CI/CD, Docker, Jira, Confluence
• Protocols & Messaging: OPC UA, MQTT/AMQP, TCP/IP, XML/JSON-based integration
• Security & Networking: TLS/SSL, Firewalls, network segmentation, secure remote access

You are

A problem-solver who thrives under pressure, autonomous and self-organized, detail-oriented, a strong communicator across cultures and time zones, and adaptable — comfortable switching between projects and customer environments throughout the day.

How TO APPLY Send your CV and a short cover letter.
Process: HR screening call (30 min) → technical interview incl. case study (60-90 min) → final interview with the department head (30 min) → offer.