Job Summary: We are seeking a Backend and Frontend developer for a corporate web system for fleet management and vehicle tracking, with a focus on optimization and large-scale data handling. Key Highlights: 1. Backend development with ASP.NET Core and advanced SQL Server 2. Frontend development with JavaScript/jQuery and Bootstrap 3. Experience in tracking and geolocation systems Backend: * ASP.NET Core 7.0 (C#) using the MVC pattern * SQL Server – advanced proficiency (stored procedures, functions, complex queries) * ADO.NET * Session Management and cookie handling Frontend: * Razor Pages/Views (CSHTML) * Advanced JavaScript/jQuery * AJAX * Bootstrap * Advanced CSS/HTML5 Libraries and Tools: * Leaflet * Highcharts * DataTables Architecture: * MVC pattern (Model-View-Controller) * Modular component-based organization * Custom authentication filters * Custom helpers and extensions Preferred Qualifications: * Experience with tracking/logistics systems * Knowledge of geolocation and mapping (OpenStreetMap, routing) * Experience with dashboards and BI * Knowledge of SQL query optimization * Familiarity with fleet management systems * Experience with WebSockets or SignalR for real-time data * Knowledge of REST APIs and system integration Complementary Skills: * Ability to handle large volumes of data * Experience developing complex reports (positions, speed, temperature) * Experience with file uploads and processing * Debugging and performance optimization * Working with multiple databases simultaneously Behavioral Profile: * Organized approach to managing complex projects (100+ controllers) * Analytical capability for risk management systems * Attention to detail in critical monitoring systems * Collaborative teamwork Business Domain Knowledge (Preferred): * Knowledge of the transportation and logistics sector * Familiarity with risk management concepts * Experience with telematics systems (temperature, speed, position) * Understanding of trip and delivery workflows ________________________________ Environment: Windows Server, SQL Server, IIS System Type: Corporate web system for fleet management and vehicle tracking Job Types: Full-time, Permanent Pay: R$4,500.00 per month Work Location: In person