Medior/Senior Full-Stack Software Engineer Fleet Management System (FMS)

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The system you will work on
On-board client: Windows tray application and configuration tool (C#, WPF, .NET Framework 4.5.2) that reads data from the vessel's automation system, buffers it locally (SQLite), and uploads it over satellite or mobile links that often drop.
Cloud API: ASP.NET Core (.NET 10) with Entity Framework Core and PostgreSQL, Hangfire background jobs, Redis caching, SignalR real-time updates, and JWT authentication with two-factor login.
Web application: Angular (TypeScript, RxJS) with Angular Material, PrimeNG.
ShipView: remote-access agent that lets engineers reach on-board PCs from the browser through secure tunnels.
Infrastructure: Ubuntu Linux servers, Docker, Nginx, and GitLab CI/CD.
Your responsibilities
Build features end to end: API endpoint, database change, Angular screen and, where needed, the on-board client.
Design and optimize PostgreSQL schemas and queries for large volumes of time-series vessel data; write and review EF Core migrations.
Build clear, fast user interfaces for real-time monitoring: dashboards, charts, maps, alarm lists, and vessel views.
Make ship-to-shore data transfer reliable on slow and unstable connections (local buffering, retries, safe re-uploads).
Keep the API, the on-board client, and the web application compatible when data contracts change; vessels may run older client versions for years.
Write secure code (authentication, authorization, input validation, secrets handling) and help resolve findings from security reviews and penetration tests.
Ship through GitLab CI/CD, monitor system health, and investigate data issues reported by customers or vessels.
Write unit and integration tests and concise technical documentation for what you build.
Work directly with Project Engineering and Service teams to clarify requirements and deliver on schedule.
Help modernize older parts of the codebase (.NET Framework, Angular 14) step by step, without disrupting vessels in the field.