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Senior Software Engineer - .NET C#

RydooMechelen, Flanders, Belgium
Hybrid Full-time

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Experience Level

Senior

Qualifications

Key Responsibilities:Participate in a cross-functional, autonomous squad. Enhance our product's core by designing and refining systems that expedite expense management for users globally. Deploy valuable features into production while monitoring their performance and maintenance. Design and implement REST APIs. Contribute to front-end feature development. Assist in architecting several of our microservices. Create and write automated tests. Establish infrastructure and pipelines through Infrastructure as Code (IaC). Requirements:Proven experience in backend development. Strong expertise in . NET and C#. Proficient with Entity Framework (or similar ORM like NHibernate) and SQL Server or comparable technologies. A collaborative team player with a passion for writing clean and testable code. Experience in optimizing application performance and scalability for a growing user base. Familiarity with Service Oriented Architecture using Service Bus is advantageous. Knowledge of Azure Cloud (or AWS, GCP) is a plus. Some exposure to Angular is beneficial, along with a willingness to learn front-end technologies. Experience in Agile and DevOps methodologies is a plus. Familiarity with LLMs is an asset. Stay updated on industry trends, best practices, and emerging technologies.

About the job

At Rydoo, we simplify expense management allowing individuals to concentrate on what truly matters, rather than on their receipts. Over one million users rely on us for swift and intelligent expense submission, approval, and control.

Since 2015, Semine has shared this vision, developing AI technology that alleviates repetitive, tedious accounting tasks, empowering finance teams to work more efficiently.

In July 2025, Semine and Rydoo united to revolutionize financial automation. Together, we're building an all-encompassing AI-driven platform that streamlines accounts payable and expense management, enabling businesses to operate more efficiently.

Our global team of over 200 individuals believes that great technology should enhance life. If you're brimming with innovative ideas and want to create solutions that genuinely assist people, you'll thrive here.

Rydoo at a Glance

  • Aspiring international team
  • 33 nationalities speaking more than 15 languages
  • 9 hubs across 3 continents
  • User-friendly spend management application for both iPhone and Android
  • Supporting over 10,000 clients and more than 1 million users globally
  • 4.6 employer score on Glassdoor
  • Hybrid work policy

About Rydoo

Rydoo is a leading company in expense management solutions, dedicated to providing a seamless experience for its users. With a diverse and ambitious team, Rydoo is at the forefront of financial automation, leveraging AI technology to simplify processes for finance teams globally.

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