SOFTWARE DEVELOPER

HELIUS TECHNOLOGIES PTE. LTD.; Singapore; On-site; SGD 70,000 - 120,000; Full time

Job summary

Helius Technologies in Singapore is seeking an experienced Backend Engineer to design, develop, and maintain scalable microservices using Java 17+ and Spring Boot. You will build RESTful APIs, integrate with banking and identity platforms, and ensure security and performance in a fast-paced agile environment.

The role requires 3+ years of backend experience, proficiency with SQL databases, and hands-on work with Docker/Kubernetes and messaging systems like Kafka/RabbitMQ.

Qualifications

• 3+ years of backend development experience.
• Strong hands-on experience in Java (11/17/21) and Spring Boot.
• RESTful APIs and microservices development.
• SQL and relational databases expertise.
• Experience with Apache Kafka or RabbitMQ.
• Docker and Kubernetes / OpenShift experience.
• JUnit, Mockito and automated testing experience.
• Experience in Agile / Scrum environments.
• Strong analytical and problem-solving skills, plus communication.

Responsibilities

• Develop and maintain backend microservices using Java 17+ and Spring Boot.
• Design, develop and secure RESTful APIs using OpenAPI / Swagger specifications.
• Analyse and migrate legacy J2EE applications into modern microservices architecture.
• Integrate backend services with credit bureau, credit decisioning, core banking and digital identity platforms.
• Work with relational databases such as PostgreSQL, MariaDB and Oracle.
• Implement event-driven applications using Apache Kafka.
• Develop automated unit and integration tests using JUnit 5 and Mockito.
• Deploy, monitor and troubleshoot applications using Docker and Kubernetes.
• Collaborate with Product Owners, Architects, Frontend Developers and QA teams in an Agile environment.
• Ensure application performance, security, scalability and code quality.

Skills

Java

Spring Boot

REST APIs

SQL

Kafka / RabbitMQ

Docker / Kubernetes

JUnit & Mockito

Agile / Scrum

Analytical / Communication

Job description

Key Responsibilities

• Develop and maintain backend microservices using Java 17+ and Spring Boot.
• Design, develop and secure RESTful APIs using OpenAPI / Swagger specifications.
• Analyse and migrate legacy J2EE applications into modern microservices architecture.
• Integrate backend services with credit bureau, credit decisioning, core banking and digital identity platforms.
• Work with relational databases such as PostgreSQL, MariaDB and Oracle.
• Implement event-driven applications using Apache Kafka.
• Develop automated unit and integration tests using JUnit 5 and Mockito.
• Deploy, monitor and troubleshoot applications using Docker and Kubernetes.
• Collaborate with Product Owners, Architects, Frontend Developers and QA teams in an Agile environment.
• Ensure application performance, security, scalability and code quality.

Required Skills & Experience

• 3+ years of backend development experience.
• Strong hands-on experience in Java (11/17/21) and Spring Boot.
• Good experience developing RESTful APIs and microservices.
• Strong knowledge of SQL and relational databases.
• Practical experience with Apache Kafka or RabbitMQ.
• Experience with Docker and Kubernetes / OpenShift.
• Knowledge of JUnit, Mockito, Postman and automated testing.
• Experience working in Agile / Scrum environments.
• Strong analytical, communication and problem-solving skills.