Senior Software Engineer - .NET/Azure TAX Platform

Senior Software Engineer I Azure Jobboard
Amsterdam | Hybrid Work Model | Full-Time
Build software professionals trust when accuracy matters most.
Nextens develops the leading tax and compliance platform for professionals in the Netherlands. Trusted by thousands of experts, our software supports more than 1 million filings each year and helps organizations navigate evolving tax rules, high-volume data , and complex workflows with precision and reliability.
Built on deep domain expertise and a commitment to continuous innovation, Nextens not only ensures compliance , we set the standard for how tax professionals work.
Your Role
As a Senior Software Engineer at Nextens , you own meaningful parts of a business-critical platform used daily by thousands of professionals. You design and deliver robust software, make sound technical choices, and help raise the quality of a platform where accuracy, reliability , and maintainability truly matter .
You enjoy complex engineering challenges and bring the judgement to balance quality , delivery, and long-term maintainability. Together with domain experts, fellow engineers, and product owners, you translate changing fiscal requirements into software our customers can trust completely .
You will join Team Fiscal, a product engineering team responsible for key parts of our Dutch tax filing platform. Together with fiscal experts and product colleagues, the team translates changing legislation into reliable software for tax professionals across the Netherlands.
Key responsibilities include:
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Design, build, and evolve core modules for tax filing and compliance, taking ownership from solution design through long-term maintainability .
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Use modern engineering practices, including AI-assisted development tools where appropriate , to improve productivity, quality, and maintainability.
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Develop and improve back-end and front-end components , APIs, interfaces, and integrations for a scal...