We are looking for a highly skilled .NET Core Expert to design, build, and maintain enterprise-grade backend systems and APIs. You will take ownership of complex technical solutions across the full software development lifecycle, working closely with architects, product owners, and cross-functional teams to deliver scalable, high-performance, and secure applications. The ideal candidate brings deep expertise in .NET Core / .NET 6-8, microservices architecture, cloud-native development, and modern DevOps practices.

Key responsibilities

Architect, design, and develop robust, scalable, and high-performance backend solutions using .NET Core / .NET 6 / .NET 7 / .NET 8.
Build and maintain RESTful APIs, gRPC services, and microservices aligned with domain-driven design (DDD) and clean architecture principles.
Lead end-to-end feature development from requirements analysis, technical design, coding, unit testing, through to deployment and production support.
Integrate with third-party services, enterprise systems, and external APIs using REST, SOAP, GraphQL, or messaging platforms.
Design and optimise relational and non-relational database schemas and queries (SQL Server, PostgreSQL, MongoDB, Redis).
Implement event-driven and asynchronous communication patterns using Azure Service Bus, RabbitMQ, Kafka, or MassTransit.
Apply security best practices including OAuth 2.0, OpenID Connect, JWT, data encryption, and secure coding standards.
Collaborate with DevOps teams on CI/CD pipeline setup, containerisation (Docker), and deployment on Kubernetes or Azure/AWS cloud platforms.
Conduct thorough code reviews, enforce coding standards, and mentor junior and mid-level developers.
Contribute to architectural decisions, technical roadmaps, and system design documentation.
Identify and resolve performance bottlenecks, memory leaks, and scalability issues in production environments.
Support SIT, UAT, and production releases - investigate incidents and drive root cause analysis.

Requirements

6+ years of hands-on experience in .NET development with at least 3 years focused on .NET Core / .NET 5+ (including .NET 6, 7, or 8).
Deep proficiency in C# - including advanced concepts such as async/await, LINQ, generics, delegates, reflection, and memory management.
Strong experience with ASP.NET Core Web API, Minimal APIs, and middleware pipeline development.
Solid knowledge of microservices patterns - API Gateway, CQRS, Event Sourcing, Saga, Circuit Breaker, and Outbox Pattern.
Hands-on experience with ORM frameworks - Entity Framework Core, Dapper, or NHibernate.
Proficiency in relational databases (SQL Server, PostgreSQL) - schema design, stored procedures, indexing, and query optimisation.
Experience with message brokers and event streaming - Azure Service Bus, RabbitMQ, Apache Kafka, or MassTransit.
Familiarity with cloud platforms - Microsoft Azure (preferred: App Services, Azure Functions, AKS, Service Bus, Key Vault, Application Insights) or AWS.

Important Note:

Please share your resume in word format with [HIDDEN TEXT]

Important Note: If this requirement is not a match for you please refer to your friends.

Interested professionals can reach out to me for Confidential Discussion @ +65- 9060-4050.

Best Regards,

Dilip Kumar Daga

Vice President - Strategic Accounts

Helius Technologies Pte Ltd

36, Robinson Road,#13-05, City House, Singapore 068877

DID: +(65) 6429-9407

Mobile: +(65) 9060-4050

Fax: +(65) 62222213

Email id: [HIDDEN TEXT]

http://helius-tech.com

Registration No : R1108376

EA Licence No : 11C3373

https://www.linkedin.com/in/dilipdaga/