Java Technical Lead

Exasoft; Singapore; On-site; SGD 120,000 - 180,000; Full time

Job summary

Exasoft is seeking an experienced Software Architect to design and implement large distributed systems using Java/J2EE and Spring Boot. The role focuses on microservices architecture, REST/SOAP services, and API management with Swagger specs.

You will work with SMEs, define best practices, and drive deployment pipelines in Kubernetes. The ideal candidate has 7+ years in architecture development, strong Java fundamentals, and hands-on experience with middleware (MQ/JMS, Kafka), Spring Cloud, and

Qualifications

• Bachelor’s degree and 7+ years of technical experience in architecture development, backend integration, and development.
• Strong hands-on with Java/J2EE, Spring Boot, and testing frameworks (JUnit, Cucumber).
• Deep knowledge of SOA, microservices design, REST and SOAP services.
• Experience with Java fundamentals (Java 8+), Spring ecosystem, and clean code principles.
• Hands-on in Java microservices (Spring Boot) and RESTful/SOAP APIs.
• Experience designing scalable microservices and API gateways.
• Exposure to middleware/messaging (MQ/JMS, Kafka) and event-driven patterns.
• Familiarity with Spring Cloud, Swagger specs, and OAuth-based authentication.
• Experience deploying Java microservices in Kubernetes and building deployment pipelines.
• Knowledge of PCI and secure coding standards.
• Experience with MSSQL data modelling and performance optimisation.

Responsibilities

• Translate functional requirements into architectural designs and patterns.
• Lead efforts with SMEs to ensure requirements are met and aligned with standards.
• Define best practices and standards for microservice implementations.
• Identify implementation patterns and accelerators to improve delivery quality.
• Evaluate industry technologies to balance cost, portability, and usability.
• Propose design risks and alternatives with high-quality solutions.

Skills

Java/J2EE

Spring Boot

Microservices design

RESTful & SOAP

OAuth security

PCI security standards

CI/CD pipelines

Kafka

Spring Cloud

SQL performance tuning

Education

Bachelor’s degree in Computer Science or related field

Tools

MQ/JMS

Swagger

Kubernetes

Job description

• Broad experience in designing, programming, and implementing large distributed systems with microservices.
• Deep understanding of Application, Infrastructure and security architecture and non-functional aspects like Performance, Scalability, Reliability, Availability etc.
• Translate functional requirements to design.
• Work with technical SMEs to understand their requirements and ensure these are met.
• Define best practices and standards for the microservice implementation.
• Identify and define implementation patterns.
• Lead activities to build accelerators and tools to increase the quality of deliverables.
• Evaluates industry technologies to shape design of services in consideration of cost, portability, compatibility, or usability factors.
• Identifies and makes appropriate changes to technologies, integrated platforms, and systems to meet customer and operational requirements.
• Continuously seeks to more efficiently manage and utilize technology, platforms, and systems.
• Highlights design risks, provide alternative options, and recommend quality solution to specified problem.

Requirements

• Bachelor’s degree and 7+ years of technical experience within architecture development, integration of backend systems and development. Strong Hands–on experience in developing applications using Java/J2EE, with Spring boot framework knowledge and experience.
• Deep knowledge of SOA, Architecture and Design on Micro services, REST Services and Soap Services Development.
• Experience in core java fundamentals, Java 8+, Spring, Springboot, testing framework Junit, Cucumber.
• Strong hands-on with design patterns, clean code.
• Strong hands-on in Java Microservices (Springboot) Restful APIs and Soap Services.
• Experience in designing and coding scalable Microservices.
• Experience with middleware/messaging technologies such as MQ, JMS, Kafka and exposure to event-driven design patterns.
• Experience in Spring Cloud.
• Experience in API Management using any API Gateway.
• Experience in writing deployment pipelines to deploy Java microservices in Kubernetes.
• Should be very strong in creating/ defining Swagger specs for REST APIs, understand REST principles, Guidelines.
• Demonstrated knowledge of OAuth token-based authentication protocol.
• Demonstrated knowledge of PCI and Security Coding Standards.
• Experience with MSSQL, data modelling, query development and performance optimization.