.Net Developer (Middle Level) in Ho Chi Minh City, Hồ Chí Minh at Titan Dealer Management Solutions Pty Ltd

About Us

As a global player in the SaaS automotive landscape, Titan Dealer Management Solutions (Titan DMS) boasts over 145 staff globally and SaaS representation across more than 26 markets. Titan is now recognised as one of the leading suppliers of technologically driven industry solutions to automotive dealers and manufacturers around the world.

Since 2009, Titan’s flagship product, the Titan Dealer Management System (Titan DMS), has been adopted by Franchised Automotive Dealerships covering over 45 different Automotive Brands throughout Australia, Asia, Pacific Region, Middle East, UK, Africa and Europe, and continues to extend its global reach and reputation as a leading international software provider.

Titan DMS is a comprehensive Dealer Management System (DMS) serving automotive dealerships across Australia, the Middle East, UK, Japan and Asia-Pacific. Built on a mature .NET technology stack, the product handles end-to-end dealership operations — vehicle sales, service workshops, parts inventory, accounting, and third-party OEM integrations.

Our Professional Services team delivers manufacturer integrations, API Gateway services, custom reporting, and emerging core features. We're looking for a Mid-Level .NET Developer to join us and contribute across the full breadth of our delivery.

Core

• C# / .NET Framework

API & Services

• ASP.NET Core Web API
• RESTful Services
• API Gateway patterns (routing, authentication, rate limiting)

Database

• Microsoft SQL Server
• T-SQL Stored Procedures

Integrations

• OEM Manufacturer APIs (Ford, BMW, Toyota, etc.)

Desktop

• Windows Forms (maintenance & modernisation)

DevOps

• Git
• Azure DevOps
• CI/CD Pipelines

• Build and maintain the desktop application — build and maintain WinForms screens and incrementally refactor toward modern patterns.
• Develop manufacturer and third-party integrations — map payloads and handle real-time and batch data exchange with OEM systems (Ford, BMW, Toyota, Jaguar/Land Rover, etc.).
• Write and optimise T-SQL stored procedures for data retrieval, reporting, and integration logging.
• Build and maintain RESTful APIs and integration services — design endpoints, implement authentication (OAuth2/JWT), versioning, and request/response transformation.
• Implement observability — API logging, monitoring dashboards, and error tracing for integration health.
• Participate in code reviews, technical design discussions, estimation, and team workshops.
• Collaborate using Jira for task tracking and Confluence for documentation.

What We're Looking For

Essential

• 4+ years of professional experience in C# and .NET development.
• Experience with Windows Forms desktop applications.
• Experience building RESTful APIs with ASP.NET Core / Web API.
• Solid Microsoft SQL Server skills — writing and optimising T-SQL stored procedures.
• Understanding of API design principles — versioning, error handling, authentication (OAuth2/JWT).
• Experience with ASMX / WCF / SOAP web services.
• Strong debugging and problem-solving skills across the full stack.
• Experience with Git source control and Jira issue tracking.
• Good communication skills and ability to work collaboratively.

• Experience with API Gateway patterns or platforms (Ocelot, YARP, Azure API Management).
• Exposure to AI/ML integration — calling LLM APIs, prompt engineering, RAG patterns, or vector search.
• Experience with Docker and containerised deployments.
• Knowledge of the automotive dealership domain (DMS, OEM integrations).
• Familiarity with message queues (RabbitMQ, Azure Service Bus) or event-driven architecture.
• Exposure to Python (for AI/ML scripting or data pipelines).

• Pragmatic - balances delivery speed with code quality.
• Curious - eager to learn new domains (automotive, AI, integration patterns).
• Collaborative - shares knowledge, supports teammates, participates in workshops and retrospectives.
• Ownership-driven - takes responsibility from development through to production support.

Why Join Us?

• Work on a mature product with real users and real impact across the automotive industry.
• Diverse project work - from manufacturer integrations and API Gateways to AI features and operational dashboards.
• Modernisation in progress - cloud services, containerisation, and AI integration.
• Collaborative engineering culture with experienced developers and clear career progression.
• Opportunity to grow across .NET, API design, integration architecture, and emerging AI technologies.