Java API Developer

Parkar Digital

full-time

Posted on: 9/7/2025

Location: 🇸🇬 Singapore

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Mid-LevelSenior

Distributed SystemsJ2EEJavaJUnitKafkaKubernetesMicroservicesSOAPSpringSpring BootSpringBoot

About the role

Design, build, and deliver scalable distributed systems and Java microservices
Implement and program large distributed systems with microservices architecture
Ensure performance, scalability, reliability, availability, and security of services
Work with technical SMEs to understand requirements and ensure they are met
Define best practices and standards for microservice implementation
Lead activities to build accelerators and tools to increase quality of deliverables
Evaluate industry technologies and recommend appropriate design choices considering cost, portability, compatibility, and usability
Identify and implement changes to technologies, integrated platforms, and systems to meet customer and operational requirements
Continuously seek ways to more efficiently manage and utilize technology, platforms, and systems
Highlight design risks, provide alternative options, and recommend quality solutions

Bachelor’s degree in computer science, engineering or similar domain
5+ years of technical experience within architecture development, integration of backend systems and development
Strong hands–on experience in developing applications using Java/J2EE
Experience with Spring and Spring Boot framework
Experience designing and coding scalable Microservices
Deep knowledge of SOA, Architecture and Design on Microservices
Experience with REST Services and Soap Services Development
Core Java fundamentals, Java 8+
Experience with testing frameworks: JUnit, Cucumber
Strong hands-on with design patterns and clean code principles
Experience with middleware/messaging technologies such as MQ, JMS, Kafka
Exposure to event-driven design patterns
Experience with MSSQL, data modelling, query development and performance optimization
Demonstrated knowledge of OAuth token-based authentication protocol
Demonstrated knowledge of PCI and Security Coding Standards
Strong problem solving skills and ability to work under pressure
Good command of English, both written and spoken
(Good to have) Experience in API Management
(Good to have) Experience writing deployment pipelines to deploy Java microservices in Kubernetes
(Good to have) Strong in creating/defining Swagger specs for REST APIs, understand REST principles