Senior .Net Developer (AI Integration, English)

Top 3 reasons to join us

• Dynamic and international working environment
• Hybrid working model and good work-life balance
• Attractive salary and benefits

Job description

At Topicus Vietnam, we build software that redefines what’s possible in banking. As part of Topicus Group, we are on a mission to transform financial services through technology that creates meaningful impact for banks and their customers worldwide. Via our Akkuro banking platform (), we are leading the charge in Agentic Banking – a new paradigm where banks evolve into ecosystems of intelligent, autonomous agents delivering personalized, proactive, and seamless financial experiences.

We’re seeking a forward-thinking Senior .NET Developer with hands-on experience in designing and implementing AI-powered solutions. 
 

Responsibilities

• Design and develop enterprise-grade applications in .NET, with a focus on integrating advanced AI capabilities.
• Integrate and orchestrate AI models and APIs (e.g., OpenAI, Azure AI, custom ML services) using the Model Context Protocol (MCP) to ensure interoperability and scalability.
• Implement AI security best practices, including secure prompt handling, data sanitization, model input/output validation, and protection against data leakage.
• Develop and maintain secure API endpoints for AI services, leveraging authentication and authorization mechanisms such as OAuth2, OpenID Connect, and role-based access controls.
• Collaborate with DevOps, Data, and Security teams to ensure robust deployment pipelines for AI-integrated .NET applications, with a focus on security, logging, and monitoring.
• Stay up-to-date with emerging trends in AI safety, security, and MCP standards, bringing best practices into engineering and architecture decisions.

Your skills and experience

• 5+ years of experience in software development with .NET (C#, , .NET 8/9).
• Hands-on experience with AI/ML model integration (e.g., OpenAI, Azure AI, or custom ML).
• Knowledge of AI security practices: prompt handling, data sanitization, input/output validation.
• Exposure to Model Context Protocol (MCP) or other AI orchestration frameworks.
• Solid experience in building enterprise-grade applications and developing secure APIs with REST.
• Strong understanding of authentication & authorization mechanisms (e.g., OAuth2, OpenID Connect, RBAC).
• Strong problem-solving, analytical, and communication skills.
• Ability to work in Agile/Scrum teams with cross-functional collaboration.
• Verbal and written fluency in English.

Nice to Have

• Familiarity with DevOps practices (CI/CD pipelines, logging, monitoring, Docker/Kubernetes).
• Experience with event-driven architectures (Kafka, RabbitMQ, Azure Service Bus).
• Understanding of financial services or banking domain.
• Experience with agentic AI systems (LangChain, Semantic Kernel, AutoGen).

Why you'll love working here

• Attractive salary (annual salary review).
• Fixed 13th-month salary and performance bonus.
• Full salary during probation and full coverage of social insurance.
• Hybrid working model and good work-life balance.
• Premium healthcare (with annual health check-up).
• 16 days of annual leave per year.
• 5 paid sick leave days.
• Dynamic and international English-speaking working environment.
• Regular gatherings (happy hour, bimonthly dinner, social events, etc.).
• Annual company trip.
• Fully stocked pantry with coffee and snacks.
• Budget for team activities.
• Supportive and diverse work environment that promotes continuous learning.
• Opportunity for traveling and training in the Netherlands.