Job details:

• Role: Senior .Net Full Stack Developer
• Location: Hybrid, 2 days in Lisbon, Braga, Coimbra
• Full time
• Duration: 6 months + extension

Scope:

We are looking for a Senior .Net Full Stack Developer to join our team and help design, build, and support high-quality enterprise applications. In this role, you will work across both frontend and backend technologies, contributing to the full software development lifecycle: from requirement gathering and technical analysis to development, testing, deployment, and production support.

You will play an important role in delivering scalable, secure, and maintainable solutions while collaborating with cross-functional and international teams in an Agile and DevOps-driven environment. This is an excellent opportunity for a proactive professional who combines strong technical expertise with ownership, teamwork, and a continuous improvement mindset

Responsibilities:

• Design, develop, maintain, and enhance full-stack web applications.
• Build and integrate RESTful APIs across enterprise platforms.
• Gather, analyze, and refine business and technical requirements.
• Contribute to technical decisions and help prioritize development activities.
• Develop frontend solutions using React, Angular, JavaScript, and legacy technologies where needed.
• Develop backend solutions using .NET Core, .NET Framework, and C#.
• Work with SQL Server and related data access technologies.
• Perform unit testing and integration testing to ensure quality and reliability.
• Participate in release and deployment management activities.
• Support and improve CI/CD pipelines and DevOps practices.
• Troubleshoot and resolve production incidents, including high-priority issues.
• Manage and contribute to risk, issue, incident, and problem resolution.
• Ensure adherence to coding standards, development guidelines, naming conventions, templates, and reference implementations.
• Produce and maintain clear technical documentation.
• Collaborate effectively within the team and across distributed, cross-functional, and international teams.

Required Skills:

• Degree in Computer Science, Software Engineering, Information Technology, Engineering, or a related technical field.
• 5 to 8 years of relevant professional experience as a .Net Full Stack Developer.
• Strong expertise in .NET Core/Framework/MVC and related frameworks.
• Solid experience with React, Angular, JavaScript, and working with older or legacy technologies when required.
• Strong knowledge of SQL and ORM tools such as Entity Framework.
• Experience working in production environments and supporting live business applications.
• Hands-on experience with CI/CD, Azure DevOps, Jenkins and Git.
• Understanding of authentication mechanisms and core security principles.
• Experience in development, unit testing, and integration testing.
• Advanced English – Dutch and French knowledge is a plus

SNI sp. z o.o. will process personal data for the purpose of the recruitment process in accordance with Data Privacy Policy. The data may also be stored and processed for future recruitment purposes, in accordance with the given consent.