Full-Stack Developer

Description

Job Summary: We are seeking a Full-Stack Developer to develop, maintain, and support a customized web-based CRM application. Key Highlights: 1. Responsibility for the development, maintenance, and support of a web-based CRM application 2. Focus on effectively resolving real user problems 3. Balance between support, bug fixes, and evolutionary development Lisbon We are looking for a Full\-Stack Developer to assume responsibility for the ongoing development, maintenance, and support of a customized web-based CRM application. * ##### **Department** IT * ##### **Working Hours** Full Time **Key Responsibilities:** * Develop, maintain, and enhance a customized web-based CRM application * Manage and resolve application support tickets, including bug fixes, data issues, and user-reported problems * Investigate production issues, identify root causes, and implement reliable solutions * Work with ASP.NET (Web Forms / MVC / Core – adjust as needed) * Design, optimize, and maintain databases in Microsoft SQL Server * Develop and maintain integrations with external APIs (REST/JSON, OAuth, etc.) * Deploy, configure, and troubleshoot applications hosted on Microsoft IIS * Refactor and improve legacy code for performance, maintainability, and scalability * Implement security enhancements, monitoring, and performance improvements * Communicate clearly with stakeholders regarding issues, solutions, and timelines * Prioritize tasks between support tickets and new feature development * Translate complex technical concepts and development impacts into clear explanations to support decision-making by management and business teams **Requirements:** Core: * Solid experience with ASP.NET / C\# * Strong knowledge of Microsoft SQL Server (queries, indexes, stored procedures) * Experience managing and troubleshooting applications on IIS * Full\-stack experience (backend and frontend) Support \& Troubleshooting: * Proven experience managing production incidents and support tickets * Strong diagnostic and problem-solving skills * Ability to work comfortably with existing/legacy code Integrations: * Experience with external APIs * REST services, authentication (OAuth, API keys) * Webhooks and asynchronous processes Frontend: * HTML, CSS, JavaScript * Familiarity with jQuery, Bootstrap, or similar frameworks Preferred: * Experience with ASP.NET Core * Experience with Azure or other cloud platforms * Knowledge of CI/CD * Experience with CRM systems or management applications **Desired Profile:** Self-motivated individual capable of taking ownership of the application Comfortable balancing support, bug fixes, and evolutionary development Ability to make informed technical decisions Attention to detail and focus on effectively resolving real user problems Business-oriented mindset, understanding the impact of technical decisions on processes and outcomes Minimum 3 years of proven experience in similar roles HOW TO APPLY: If your aspirations and objectives align with the described profile, please submit your application via our website, sending an email with the subject line “FS062026” to: recrutamento@wsenglish.pt cc: maicon.almeida@wsenglish.pt