Senior Fullstack Developer - Contract

zenith infotech (s) pte ltd.; Singapore; On-site; SGD 90,000 - 150,000; Full time

Job summary

ZENITH INFOTECH (S) PTE LTD. is seeking an experienced Java Developer to design, develop, and maintain scalable enterprise applications and cloud-native services using Java, Spring Boot, and AKS.

You will build REST APIs, event-driven systems with Kafka, and containerized deployments on Azure; contribute to CI/CD pipelines, and support front-end work with ReactJS if needed. The role involves collaboration with architecture and product teams to deliver secure, resilient solutions.

Qualifications

• 7+ years of software development experience.
• Strong hands-on experience with Java, Spring Boot, and microservices.
• Experience delivering enterprise/banking/financial software is preferred.
• Proficient in designing RESTful APIs and event-driven architectures.
• Hands-on with Kafka, including producers and consumers.
• Experience deploying on Microsoft Azure and AKS.
• Familiarity with CI/CD pipelines and automated testing.
• Knowledge of security, resiliency, and performance considerations.
• Nice-to-have ReactJS front-end knowledge.

Responsibilities

• Design and develop scalable Java applications and microservices using Spring Boot.
• Build and maintain REST APIs and event-driven architectures.
• Implement real-time messaging using Apache Kafka.
• Deploy and manage containerized apps on AKS.
• Work with Docker and Kubernetes for cloud-native deployments.
• Develop and maintain CI/CD pipelines and automated deployments.
• Troubleshoot issues across distributed environments.
• Collaborate with architects and product teams to deliver secure, resilient solutions.
• Contribute to code reviews and technical documentation; assist with front-end via ReactJS if needed.

Skills

Java

Spring Boot

Microservices

REST APIs

Azure Kubernetes Service (AKS)

Docker

Kubernetes

Apache Kafka

CI/CD

ReactJS (advantage)

Tools

Apache Kafka

Azure

Azure Kubernetes Service

Docker

Kubernetes

ReactJS

Job description

Role Overview

We are looking for an experienced Java Developer to design, develop, and maintain scalable enterprise applications and cloud-native services. The ideal candidate will have strong hands-on experience with Java, Spring Boot, Apache Kafka, and Microsoft Azure, particularly Azure Kubernetes Service (AKS). Experience with ReactJS is an added advantage.

Key Responsibilities

• Design and develop scalable applications and microservices using Java and Spring Boot.
• Build and maintain REST APIs and distributed, event-driven architectures.
• Implement real-time messaging and integration solutions using Apache Kafka.
• Deploy and manage containerized applications on Azure Kubernetes Service (AKS).
• Work with Docker, Kubernetes, and Azure services to support cloud-native deployments.
• Develop and maintain CI/CD pipelines and support automated deployments.
• Troubleshoot application, integration, and production issues across distributed environments.
• Collaborate with architects, product teams, and engineering teams to deliver secure, resilient solutions.
• Contribute to code reviews, engineering standards, performance optimization, and technical documentation.
• Where required, contribute to front-end development using ReactJS.

Required Skills

• Strong hands-on experience with Java and Spring Boot.
• Good understanding of microservices architecture and RESTful services.
• Hands-on experience with Apache Kafka, including producers, consumers, topics, and event-driven integration.
• Experience deploying and supporting applications on Microsoft Azure.
• Strong working knowledge of Azure Kubernetes Service (AKS).
• Experience with Docker and Kubernetes.
• Familiarity with CI/CD, Git, Maven/Gradle, and automated testing.
• Good understanding of application security, scalability, resiliency, and performance

Preferred Skills

• Experience with ReactJS, JavaScript/TypeScript, HTML, and CSS.
• Exposure to Azure services such as Azure Key Vault, Azure Monitor, Application Insights, and Azure DevOps.
• Experience working with enterprise-scale distributed systems.
• Knowledge of Agile/Scrum delivery practices.

Experience

• 7+ years of software development experience.
• Strong hands-on experience building Java-based enterprise or cloud-native applications.
• Prior experience delivering solutions in complex enterprise environments, preferably banking or financial services.