Senior .NET API / Microservices Developer (Apigee)

Ampstek; Sydney; On-site; AUD 140,000 - 180,000; Full time

Job summary

Ampstek is seeking an experienced Senior .NET API / Microservices Developer for Sydney, Australia. You will design, develop, integrate, troubleshoot, and support enterprise-grade APIs and backend services using C#, .NET Core/.NET 6+, and REST APIs.

Key work involves event-driven integrations with Kafka, Azure Service Bus, Event Hub, RabbitMQ, and Apigee API Gateway, focusing on security, lifecycle management, and scalable microservices.

Qualifications

• Experience designing, developing, integrating, and supporting enterprise APIs and backend services.
• Hands-on expertise with REST API design, microservices, and event-driven patterns.
• Strong knowledge of API lifecycle management and API security implementations.

Responsibilities

• Design, develop, integrate, troubleshoot, and support enterprise APIs and backend services.
• Build scalable microservices with event-driven architectures.
• Implement API security and manage API lifecycles using Apigee.

Skills

C#

.NET Core/.NET 6+

REST API development

Enterprise APIs & microservices

Event-driven development (Kafka/Azure/

Apigee API Gateway

API security (OAuth/JWT)

JSON & SQL Server

Git & CI/CD / Azure DevOps / Agile

Tools

Kafka

Azure Service Bus

RabbitMQ

Apigee

Git

Azure DevOps

Job description

We are seeking an experienced Senior .NET API / Microservices Developer with strong hands-on experience in C#, .NET Core/.NET 6+, REST APIs, microservices, event-driven architecture, and API management. The ideal candidate will be responsible for designing, developing, integrating, troubleshooting, and supporting enterprise-grade APIs and backend services.

The candidate should have experience working with messaging and event-driven technologies such as Kafka, Azure Service Bus, Azure Event Hub, RabbitMQ, or similar platforms, along with Apigee API Gateway and API security standards.

Key Skills & Experience

• Strong experience in C#, .NET Core, .NET 6+, and REST API development.
• Experience designing, developing, and supporting enterprise APIs and microservices.
• Hands-on experience with event-driven development using Kafka, Azure Service Bus, Event Hub, RabbitMQ, or similar technologies.
• Strong experience with Apigee API Gateway, API management, API security, and API lifecycle management.
• Strong understanding of JSON, REST, OAuth, JWT, and SQL Server.
• Experience with Git, CI/CD pipelines, Azure DevOps, and Agile delivery practices.
• Experience troubleshooting and supporting production APIs and enterprise integrations.
• Good understanding of distributed systems and messaging-based integration patterns.

Must Have:

• Design, develop, maintain, and enhance REST APIs and backend services using .NET.
• Develop scalable and reliable microservices-based applications.
• Build event-driven integrations and messaging-based solutions using Kafka, Azure Service Bus, Event Hub, RabbitMQ, or similar technologies.
• Integrate APIs with Apigee API Gateway and follow enterprise API management standards.
• Implement API security using OAuth, JWT, and other appropriate security mechanisms.