Senior API Developer

PARKAR DIGITAL PTE. LTD.; Singapore; On-site; SGD 70,000 - 90,000; Full time

Job summary

A technology company in Singapore is seeking an experienced API Developer/Senior API Developer. This role focuses on designing and implementing scalable, secure microservices and APIs, with a strong emphasis on Java and Spring Boot. Applicants should have over 7 years in backend development, showcasing expertise in microservices architecture, REST, and SOAP services. The position offers a dynamic working environment, ideal for candidates passionate about technology and innovation.

Qualifications

• 7+ years of experience in backend development and system integration.
• Strong knowledge of Java fundamentals and clean code practices.
• Experience working with performance optimization and data modelling.

Responsibilities

• Design and implement large-scale distributed systems using microservices.
• Translate requirements into scalable technical designs.
• Collaborate with stakeholders to ensure alignment on project requirements.

Skills

Java/J2EE

Spring Boot

Microservices architecture

REST services

Kubernetes

SOAP services

API design principles

CI/CD pipelines

Messaging systems

Education

Bachelor’s degree in Computer Science

Tools

Spring Cloud

Swagger/OpenAPI

Kafka

Job description

Role Summary

We are looking for an experienced API Developer / Senior API Developer to design, develop, and implement scalable, secure, and high-performance microservices and APIs. The role involves working on large distributed systems, defining architecture and best practices, and delivering reliable backend services aligned with business and technical requirements.

Responsibilities

• Design, program, and implement large-scale distributed systems using microservices architecture
• Translate functional and non-functional requirements into scalable technical designs
• Work closely with technical SMEs and stakeholders to understand requirements and ensure alignment
• Define and enforce best practices, standards, and patterns for microservices implementation
• Identify and implement reusable accelerators and tools to improve delivery quality
• Evaluate emerging technologies to optimize cost, portability, compatibility, and usability
• Recommend and implement improvements to platforms, systems, and integrated solutions
• Continuously optimize technology usage for performance, scalability, reliability, and availability
• Identify design risks, propose alternative solutions, and recommend optimal technical approaches

Requirements

• Bachelor’s degree with 7+ years of experience in backend development and system integration
• Strong hands‑on experience in Java/J2EE with Spring and Spring Boot
• Deep understanding of SOA, microservices architecture, REST and SOAP services
• Strong knowledge of Java fundamentals (Java 8+), design patterns, and clean code practices
• Proven experience designing and building scalable Java microservices and RESTful APIs
• Experience with messaging and event‑driven systems such as MQ, JMS, and Kafka
• Experience working with Spring Cloud and API Gateway solutions
• Hands‑on experience writing CI/CD pipelines to deploy microservices on Kubernetes
• Strong expertise in API design standards, including Swagger/OpenAPI and REST guidelines
• Working knowledge of OAuth‑based authentication and authorization mechanisms
• Familiarity with PCI and secure coding standards

Good To Have

• Experience with MSSQL, data modelling, and performance optimization
• Experience with business rule engines such as JBoss, JRules, iLog, Drools, or similar
• Experience automating business processes using TIBCO Business Works and EMS
• Experience migrating legacy services (e.g., TIBCO) to Spring Boot microservices
• Domain exposure to gaming or hospitality industries

Technical / Professional Skills

• Spring Boot
• Java / J2EE
• SOA
• REST and SOAP services
• Microservices architecture
• Kubernetes

Education

• Bachelor’s degree in Computer Science, Engineering, Information Technology, or a related field