TC18 - FullStack .NET / Angular Senior

📌 Information about client

We’re working with a technology client with international presence that is expanding its team and opening new roles.
They’re looking for curious, autonomous people who thrive in fast‑moving, global environments.

📌 Job description:

We’re looking for a Senior Full‑Stack Engineer with strong experience in ASP.NET (Framework & Core), C#, SQL Server, and modern web front‑end technologies.

The role involves working in a mature, mission‑critical codebase while contributing to a long‑term modernization roadmap (security remediation, dependency upgrades, and migration toward modern .NET).

📌 Responsabilities

• Maintain and enhance UIs built with jQuery, Kendo UI, Bootstrap, and lead upgrades (jQuery → 3.7, Bootstrap 3 → 5, Kendo UI updates, and gradual migration to Angular + TypeScript).
• Build responsive, accessible interfaces (WCAG 2.1 AA).
• Develop backend services across multiple .NET layers; build/consume REST APIs in ASP.NET / ASP.NET Core.
• Write clean, maintainable C# following SOLID and clean architecture; refactor legacy code safely.
• Implement automated tests (xUnit / NUnit) and maintain strong regression coverage.
• Work with Entity Framework, ADO.NET, and design efficient SQL Server schemas, queries, and stored procedures.
• Support integrations (QuickBooks, Magick.NET, log4net, JWT auth, XML signing, BouncyCastle, WebDAV).
• Drive security and dependency remediation (SCA scans, CVE triage, package upgrades).
• Contribute to the .NET Framework → .NET 8/10+ migration

📌 Must Have

• 5+ years building production .NET applications — strong command of C# and the .NET ecosystem (Framework & Core).
• Hands-on experience with ASP.NET / ASP.NET Core Web API and designing RESTful services.
• Solid experience with SQL Server — schema design, T-SQL, stored procedures, indexing, and query optimization.
• Proficient in JavaScript / TypeScript with hands-on experience in jQuery-based applications and component libraries such as Kendo UI and Bootstrap.
• Experience or strong interest in modern UI frameworks (Angular preferred).
• Strong understanding of SOLID, clean architecture, separation of concerns, and dependency injection.
• Experience with automated testing frameworks (xUnit / NUnit / MSTest; Jest or Jasmine on the front end).
• Familiarity with secure coding practices and OWASP Top 10; ability to triage and remediate CVEs from SCA tools.
• Comfortable working in a long-lived codebase using legacy patterns (packages.config, Web Forms, jQuery) while incrementally modernizing.
• Experience with Git, pull-request review workflows, and CI/CD pipelines.
• Strong problem-solving skills, debugging discipline, and ability to work in an agile, collaborative environment.
• Excellent written and verbal communication — able to document decisions and explain technical trade-offs to non-engineers.