Assistant Lead Engineer - OSB (Software Development)

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Date: 25 Mar 2026

Location: SG

Company: Synapxe

Position Overview

We are hiring a Software engineer to support the development and support a government-owned Critical Information Infrastructure (CII) governed under IM8.

The potential candidate will 

  • be a key contributor to our AWS Cloud migration project, responsible for designing, implementing, and maintaining seamless integrations between various software applications, components and systems
  •  need to have expertise in application integration using OSB and AWS Cloud services will play a key role in ensuring the success of our migration efforts.

Role & Responsibilities

  • Design, develop, and implement integration solutions for applications migrating to the AWS Cloud platform
  • Prepare detailed migration plans, timelines, and risk mitigation strategies
  • Collaborate with cross-functional teams to understand business requirements and implement effective integration strategies
  • Work closely with the migration team to execute the migration of applications to the AWS Cloud
  • Create and implement APIs to facilitate communication between applications and services
  • Ensure API designs adhere to best practices for scalability, security, and performance
  • Collaborate with team members to troubleshoot complex problems related to integration processes
  • Conduct thorough testing of integration solutions to ensure functionality, performance, and data accuracy
  • Collaborate with QA teams to develop and execute test plans for integrated systems
  • Provide documentation for troubleshooting and support purposes
  • Create and implement APIs to facilitate communication between applications and services
  • Ensure API designs adhere to best practices for scalability, security, and performance

Requirements

  • Degree in Computer Science, Computer Engineering or equivalent
  • In-depth knowledge and hands-on experience with Enterprise service bus such as OSB (Oracle Service Bus), including configuration, deployment, and management
  • At least 5 years of experience in Java development (Java 8 and above, J2EE, EJB, Spring Framework, etc.,)
  • Knowledge of and Spring framework, specifically in Spring Boot, Spring MVC, Spring Security, Spring AOP, and API integration with SOAP and RESTful webservices
  • Strong experience in OSB service routing, mediation, message transformation, and integration patterns
  • Ability to manage integrations & authentication between OSB and various systems, ensuring secure connection
  • Experience in JMS (Java Message Service) configuration and administration, including message queuing and reliable message delivery
  • Experience with Oracle WebLogic Server administration, including installation, configuration, and troubleshooting
  • Experience in designing, developing, and supporting SOA composites using Oracle SOA Suite (BPEL, Mediator, OSB)
  • Familiarity with database integration to Oracle DB and PostgreSQL using Spring Data JPA, Hibernate, JDBC
  • Knowledge in building and version control with Git, Gradle, Apache Ant
  • Hands-on experience with AWS Cloud-native services (e.g. EC2, S3, Lambda, SQS, RDS, Kubernates, API Gateway.)
  • Hands-on experience with CI/CD tools like Jenkins, GitLab CI, Bamboo or Circle CI
  • Familiarity with IaC tools like Terraform or CloudFormation
  • Ability to handle performance tuning, monitoring, and scaling of OSB and associated components in AWS, ensuring optimal performance and reliability
  • Strong understanding of RESTful APIs, SOAP, and other communication protocols

Good to Have:

  • Proficient in API Gateway (e.g., Broadcom Layer7, AWS API GW), including configuration, deployment, and administration of APIs and policies
  • Experience with API gateway features such as routing, transformation, rate limiting, and content-based routing
  • Knowledge of API gateway security mechanisms, including authentication & certificate management
  • Knowledge of migration strategies and best practices for transitioning from on-premises API Gateway to AWS, potentially using AWS API Gateway
  • Ability to adapt API gateway configurations and features to fit AWS API Gateway capabilities and requirements, ensuring seamless transition and optimization

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