Senior Java Backend Engineer – Cloud-Native Microservices

Billigence; Singapore; On-site; SGD 90,000 - 120,000; Full time

Job summary

Billigence seeks a Senior Software Engineer with strong Java backend development experience to join our Singapore team. You will design, develop, and maintain scalable backend applications using Java 11/17+, Spring Boot, and microservices, and own production deployments in a cloud-native environment.

You will work with Kafka/RabbitMQ, REST APIs, Docker, Kubernetes/OpenShift, and modern data stores, contributing to robust, high-performance systems and on-call support.

Qualifications

• 8+ years of Java backend development experience.
• Strong expertise in Java, Spring Boot, Spring Data JPA, Hibernate, and Microservices.
• Experience with Kafka/RabbitMQ, REST APIs, Docker, Kubernetes/OpenShift.
• Strong knowledge of SQL/NoSQL databases and distributed systems.
• Hands-on experience with cloud platforms (AWS, Azure, or GCP).
• Experience managing production deployments, incident handling, and on-call support.

Responsibilities

• Design, develop, and maintain scalable backend applications using Java (11/17+), Spring Boot, and Microservices architecture.
• Develop secure, high-performance REST APIs and integrations with internal and external systems.
• Design and implement event-driven solutions using Kafka, RabbitMQ, or similar messaging platforms.
• Build and optimize data solutions using SQL and NoSQL databases (PostgreSQL, Oracle, MongoDB, Redis, etc.).
• Collaborate with architects and cross-functional teams to deliver resilient, cloud-native applications.
• Implement automated testing, code quality, and CI/CD practices using tools such as JUnit, Mockito, Jenkins, GitHub Actions, or GitLab CI.
• Deploy and manage applications on Kubernetes, OpenShift, Docker, and public cloud platforms (AWS/Azure/GCP).
• Own production releases, deployment planning, validation, rollback strategies, and change management activities.
• Participate in on-call rotations and provide 24x7 support for critical production systems.
• Lead troubleshooting and resolution of production incidents, including Sev1/Sev2 incidents, ensuring SLA compliance.
• Perform root cause analysis (RCA), post-incident reviews, and drive preventive measures to improve system reliability.
• Monitor application health and performance using observability tools such as Splunk, Grafana, Prometheus, Dynatrace, ELK, or AppDynamics.
• Optimize application scalability, performance, availability, and security across distributed environments.
• Conduct code reviews, mentor junior developers, and promote engineering best practices.
• Contribute to technical documentation, operational runbooks, architecture reviews, and continuous improvement initiatives.

Skills

Java backend development

Microservices architecture

REST APIs & messaging (Kafka/RabbitMQ)

SQL/NoSQL databases

Cloud platforms (AWS/Azure/GCP)

Production deployments & on-call

Tools

Docker

Kubernetes/OpenShift

Job description

Billigence seeks a Senior Software Engineer with strong Java backend development experience to join our Singapore team. You will design, develop, and maintain scalable backend applications using Java 11/17+, Spring Boot, and microservices, and own production deployments in a cloud-native environment.

You will work with Kafka/RabbitMQ, REST APIs, Docker, Kubernetes/OpenShift, and modern data stores, contributing to robust, high-performance systems and on-call support.