Senior Migration Engineer (.Net/Azure)

Aventra Group; Kuala Lumpur; On-site; MYR 100,000 - 150,000; Full time

Job summary

Aventra Group in Kuala Lumpur is seeking a Senior .NET / Azure Migration Engineer to help modernize and migrate legacy Azure-based systems. The position requires solid expertise in event-driven architectures and Azure PaaS services while ensuring system behavior preservation during migration.

Ideal candidates should have a strong background in C# / .NET, comprehensive knowledge of Azure services, and experience with legacy systems. Immediate joiners are preferred for this role.

Qualifications

• Strong expertise in C# / .NET (latest frameworks preferred).
• Hands-on experience with Azure PaaS services.
• Deep knowledge of Azure Service Bus.
• Experience with Azure Functions (in-process and isolated models).
• Strong understanding of event-driven and microservices architectures.
• Experience working with legacy systems and modernization projects.
• Excellent debugging and problem-solving skills.

Responsibilities

• Lead migration of Azure Functions to .NET v4 isolated worker model.
• Upgrade legacy SDKs to modern Azure SDKs.
• Analyze, maintain, and validate end-to-end message flows.
• Ensure integrity of message contracts and retry policies.
• Develop and maintain solutions using Azure Service Bus.
• Preserve behavior of third-party API integrations.
• Work closely with DevOps teams to update CI/CD pipelines.

Skills

C# / .NET (latest frameworks preferred)

Azure PaaS services

Azure Service Bus

Azure Functions (in-process and isolated models)

event-driven and microservices architectures

legacy systems and modernization projects

debugging and problem-solving skills

Job description

Employment Type: Contract / Full-Time

Experience Level: Senior

Joining Preference: Immediate joiners preferred

Role Overview

We are looking for a Senior .NET / Azure Migration Engineer to modernize and migrate legacy Azure-based systems to current frameworks and SDKs. The role requires strong expertise in event-driven architectures, Azure PaaS services, and the ability to preserve system behavior during migration.

Key Responsibilities

• Lead migration of Azure Functions (in-process) to .NET v4 isolated worker model
• Upgrade legacy SDKs to modern Azure SDKs
• Analyze, maintain, and validate end-to-end message flows in distributed systems
• Ensure integrity of:
• Message contracts
• Routing and filtering logic
• Retry policies and dead-letter handling
• Develop and maintain solutions using Azure Service Bus
• Message properties and manual settlement
• Maintain and migrate Azure WebJobs / background processing services
• Preserve behavior of third-party API integrations, including:
• Authentication, callbacks, retries, timeouts, and error handling
• Deploy, configure, and validate Azure Function Apps in local and Dev environments
• Sample Service Bus messages
• API payload testing
• Smoke testing in Dev/local environments
• Work closely with DevOps teams to update CI/CD pipelines for modernized applications
• Troubleshoot and resolve build, runtime, configuration, and integration issues

Required Skills

• Strong expertise in C# / .NET (latest frameworks preferred)
• Hands‑on experience with Azure PaaS services
• Deep knowledge of Azure Service Bus
• Experience with Azure Functions (in-process and isolated models)
• Strong understanding of event-driven and microservices architectures
• Experience working with legacy systems and modernization projects
• Excellent debugging and problem‑solving skills

Preferred Skills

• Experience migrating ADAL to MSAL or Azure Identity
• Hands‑on experience with Application Insights and Azure monitoring/logging
• Exposure to legacy systems with outdated deployments
• Familiarity with CI/CD pipelines and DevOps practices
• Strong analytical and troubleshooting skills
• Ability to work independently in complex environments
• Clear communication and stakeholder collaboration
• High attention to detail in preserving system behavior

Note

• Immediate joiners or candidates with short notice periods are highly preferred
• Prior experience in large-scale system migration will be an advantage