.NET Software Engineer
4 days ago
Seville
Cactus is a software development company, providing full-cycle services for the European market. More than 170 companies increased business productivity using solutions developed by Cactus’ team. The company has been regularly included in the listings of the best software development companies in Belgium, where we have our HQ, and Europe. Cactus is ready to expand the team with a Software Engineer with strong expertise in .NET and an AI mindset at our office in Seville. This role is ideal for someone who enjoys working on complex architectures, values ownership and autonomy, and wants to have a direct impact on a product used across real organizations. What You Will Do • Translate business needs into clear, scalable technical solutions., • Design, build, and maintain applications using Microsoft technologies., • Enhance and extend existing features with a focus on performance and usability., • Collaborate closely with developers, analysts, and consultants across the business., • Write and maintain clear technical documentation., • Develop unit and integration tests to ensure high-quality, reliable code., • Take ownership of features end-to-end — from idea to deployment. What We Expect • 5+ years of experience building production-grade applications., • Degree in Software Engineering, Computer Science, or equivalent practical experience., • Strong problem-solving skills, with the ability to translate business requirements into clean technical solutions., • Comfortable owning features end-to-end (design → development → deployment)., • Collaborative mindset — you enjoy working with cross-functional teams and stakeholders., • Proactive, well-organized, and able to prioritize effectively., • Continuous learning mindset, staying up to date with modern coding practices and actively leveraging AI-assisted tools across different phases of the software development lifecycle, while maintaining strong ownership and code quality., • Security mindset: you build software with security in mind (secure coding practices, least privilege, safe handling of secrets), proactively identify risks and vulnerabilities, and collaborate to ensure services are robust and compliant., • Focus on incremental improvements and seamless customer experience., • Good communication skills in English and Spanish is a MUST. Tech Stack Backend • C#, VB.NET, .NET (Core & Framework), ASP.NET, • SQL and Entity Framework Core, • Dependency Injection, • Unit and integration testing, • WinForms and DevExpress, • Git and collaborative workflows, • CI/CD pipelines (Azure DevOps), • REST APIs (Postman, OData), • Nice to have: Azure services (e.g., WebJobs, API Management, Bicep) What We Offer • We value spontaneous interaction, co-creation, and co-ideation. That’s why we believe in hybrid work, with regular time working together at the office., • A collaborative environment focused on ownership, growth, and impact., • An environment to keep the pace on AI assisted tools., • An open, international team of experts., • Competitive salary, benefits, and learning opportunities., • Flexible working hours: you own your work and how you organize it., • Get-together team events.