OverviewWhy work with us At Sysmatch, we invest in people as a way to achieve our clients' goals, which also become our goals when they trust their technological future to our teams. Our investment in technological specialisation has over 20 years of existence on the national and international scene, with information technology solutions developed for each client, for each industry. We live in different times and it is unquestionable how indispensable technology has become in our daily lives. We are looking for experts to join our teams in each of the technology fields, who want to make a difference and build a solid career in IT.Continuous TrainingWe believe that life is a continuous learning process, and entering the job market is just the beginning. Whether you want to improve your soft or hard skills, you can count on our support to develop your skills.Health InsuranceAt the end of the day, we know that one of the most important things is the health and safety of everyone involved. That is why you can benefit from health insurance and countless advantages from a wide network of health care partners.PartnershipsSysmatchers have at their disposal a wide variety of companies that offer discounts and rewards in the most diverse areas. From gyms to banks, culture and entertainment, health and wellness, you can take advantage of all the benefits.Room for GrowthWe want to live up to your dreams. With us, you will have space to develop all your skills and reach further in your digital journey.Full Stack. NET Developer - LisboaSysmatch is a technology competencies company, especially focused on supporting its clients in the development, implementation and maintenance of information systems and global solutions. We are recruiting the following profile: Full Stack. NET Developer - Hybrid (1x per month in Lisbon).RequirementsC# advanced (OOP, async/await, etc.).. NET Framework 4.x: ASP. NET MVC / Web API; WCF and legacy integrations (where applicable).. NET Core /. NET 6+: ASP. NET Core Web API / Minimal APIs; Swagger/Open API.Authentication/authorization (AD/LDAP, OAuth2/OIDC, JWT/Claims) and API practices (errors, logging, resilience).HTML5, CSS3, Java Script/Type Script; consumption of APIs and reusable components.SPA framework (project stack dependent): Angular; Razor; Blazor; UX and accessibility best practices.SQL Server: T-SQL, query design, indexes and optimization; relational modeling and transactions.Data access: Entity Framework / EF Core (and/or Dapper); migrations and concurrency control.REST/SOAP integrations (legacy), and API contract management.Architectures: N-tier, modular monolith and/or Clean Architecture (microservices where applicable).Patterns and quality: DI/Io C, Repository/Unit of Work, refactoring, tech debt and documentation.Security (OWASP): input validation; protection against XSS/CSRF/SQLi; secret management and least-privilege.Git, CI/CD pipelines (build, tests, static analysis and automated deployment).Deployment/hosting: IIS (. NET 4.x) and ASP. NET Core (Kestrel + reverse proxy).Observability: structured logging, monitoring and troubleshooting.Minimum 5 years of software development experience.Proven experience in corrective/evolutionary maintenance of legacy. NET 4.x and modernization to. NET Core/. NET 6+.Technical leadership capability, mentoring and effective communication with technical and functional stakeholders.Microsoft certifications (Azure/Dev/Dev Ops/Security) and/or relevant education in software engineering, architecture and security.What we offerA dynamic project with a well-established international client.Salary framing according to demonstrated experience.Career progression with involvement in ambitious and innovative technological projects.Integration into a dynamic and heterogeneous team.Personalized support for each consultant.Integration into Sysmatch with access to all company activities.Participation in our training and Team Building events.Recruitment ProcessFirst contacts will be made via telephone call or video conference. We are prepared to ensure onboarding and integration for new employees and support them in this next phase of their professional career. To respond to this offer, please send your updated CV with the reference IP/FSD/N to the email provided.Interview StagesSubmission of application: You can apply for the roles that best match your profile.Interview: We will meet to discuss your work and experience. Our recruitment team will introduce you to the project and we want to know what motivates you and your goals.Technical interview / customer interview: We will assess your hard skills. You will meet the technical manager and discuss current projects.How to ApplyFollow us on social media and share this page or forward it to someone who should seize this opportunity. We work with the most current technologies, both back-end and front-end. Changes and updates come at a tremendous speed, greatly impacting innovation in this area. Whether you want to learn new skills or refresh your current ones, you have our support to start your training journey.