Senior software developer (C# / .NET, Data Analysis)

Senior software developer (C# / .NET, Data Analysis) Build the software that turns ultrasonic inspection data into safety-critical pipeline decisions worldwide, and lift the team around you. Location: Utrecht region (head office in Tricht, Gelderland) About Intero Integrity Intero Integrity is an internationally operating specialist in the inspection, maintenance and emission monitoring of pipelines and industrial assets. We develop our inspection technology entirely in-house: from ultrasonic measurement systems and FPGA signal processing to the software our analysts use to interpret hundreds of kilometres of pipeline data. The inspection results our software produces are used for safety-critical decisions about the integrity of pipelines and industrial installations such as heat exchangers. Reliability and correctness are therefore not a nice-to-have, but an absolute requirement. We operate across Europe, North America and the Middle East. Our software products sit at the heart of that work: they are used every day by our data analysis organisation around the world. Whatever you build here has a direct, global impact. The opportunity This is a role for a senior engineer who enjoys both sides of the craft: building excellent software, and helping people around you get better. You will work hands-on on the C#/.NET software behind our data analysis, turning large volumes of ultrasonic inspection data into reliable insights that our organisation uses worldwide. What makes it attractive is the mix. You mentor and guide our internal developers, setting an example in how we design, review and test. At the same time you work side by side with our external development partners. Learning from them, challenging them and making sure the work meets a high bar. You'll grow as an engineer and as a mentor, often in the same week. Because our data is used for safety-critical decisions, a strong sense of software quality runs through the role: it shapes how you design, how you review and where you set the standard for the team. If you value knowledge transfer and a healthy engineering culture as much as writing good code, you will feel at home here. What you will do Hands-on software development • You design, build and maintain C# applications for the analysis and reporting of inspection data • You work with large volumes of ultrasonic signal data and binary data streams • You build web applications and REST APIs on the ASP.NET platform • You contribute to bringing machine learning / Human-in-the-Loop capabilities into the data analysis workflow • You work with cloud-native services, preferably on Azure • You contribute to test strategies at functional, integration and system level, with an eye for the safety-critical use of the software • You work closely with hardware engineers, test engineers and domain specialists (UT inspection) Mentorship & working with partners • You mentor and coach our internal developers and help them grow their technical skills • You lead by example in code reviews, pairing and knowledge sharing • You work side by side with external development partners, challenging their choices and making sure the work meets a high standard • You help establish and document engineering standards: coding guidelines, review processes, testing strategies and release policy • You make sure design decisions and domain knowledge are documented and transferable, so the team can operate independently • You help shape a development culture where quality and continuous improvement are the norm What you bring Technical expertise • Extensive experience with C# and the .NET platform • Solid knowledge of software architecture, design principles and design patterns • Experience building web applications and REST APIs (ASP.NET) • Experience wri