Senior Fullstack Developer (.NET & Angular) (Hybrid – Porto or Lisbon) We are looking for a Senior Fullstack Developer (.NET & Angular) to join our team (Hybrid – Porto or Lisbon). What you'll do: Design, develop, and maintain scalable backend and frontend web applications; Build clean, efficient, reusable, and maintainable code using.NET, C#, and Angular; Ensure the performance, quality, and responsiveness of applications; Identify, troubleshoot, and resolve application bottlenecks and software defects; Contribute to code quality through best development practices, code reviews, and continuous improvement; Collaborate with cross-functional teams in an Agile environment to deliver high-quality solutions; Participate in application deployments and release processes using DevOps tools; Follow software craftsmanship principles to deliver reliable and maintainable solutions. What you will need to bring: Bachelor's degree in Computer Science, Software Engineering, or a related field; Minimum of 6 years of experience in Fullstack Development; Strong experience with Angular for frontend development; Strong experience with.NET and C# for backend development; Solid understanding of SOLID principles and object-oriented programming best practices; Experience developing real-time applications using WebSockets; Experience working with Git for source control; Familiarity with Jira and Agile/Scrum methodologies; Experience with XL Deploy and XL Release (nice to have); Knowledge of SQL Server or other relational databases (nice to have); Experience in Investment Banking or Financial Services (nice to have); Agile mindset, strong problem-solving skills, and commitment to software craftsmanship; Fluent English (minimum B2). What can Syone offer: Integration in an organization with profound and sustained growth and involvement in pioneering projects with innovative technological solutions; Strong IT training plans; Professional evolution with intervention in ambitious technological projects, both national and internationally. By applying, you accept our GDPR policies. Your personal data in your CV and documents will be used solely for processing your application at SYONE. SYONE, S.A. (NIPC 504729624) is the data controller, located at Rua Alfredo da Silva, 8-A, Edifício Stern, Piso 3D, 2610-016 Amadora. We will use your data to tailor your application to relevant vacancies and for potential employment contracts. If selected, your data will be kept during your employment and for at least two years after. If not selected, your data will be kept for two years for future vacancies and then deleted, except for your contact details. You can exercise your rights (access, rectification, erasure, etc.) by emailing data.privacy@syone.com. Your data may be shared with our HR service providers and will be stored securely. You can withdraw your consent at any time. We will not use your data for other purposes without your express consent. For more information, email data.privacy@syone.com.