M19 - Full Stack Engineer

FPT Asia Pacific; Singapore; On-site; SGD 90,000 - 140,000; Full time

Job summary

FPT Asia Pacific is seeking a Full Stack Engineer to maintain, support, and modernise enterprise web applications and systems. You will work across legacy and modern technologies, focusing on stability, security, and performance while coordinating with operations and security teams.

Responsibilities include owning maintenance, implementing changes, addressing incidents, enabling monitoring and backups, and documenting systems.

Qualifications

• Degree in Computer Science, Computer or Electronics Engineering, Information Technology, or related disciplines, or equivalent practical experience.
• Minimum 3-5 years experience in developing, maintaining and supporting enterprise systems.
• Experience with version control systems (Git, SVN).
• Strong troubleshooting and debugging skills.
• Strong understanding of impact of changes on live systems in production.

Responsibilities

• Take ownership of system maintenance, including change requests, bug fixes, performance improvements.
• Maintain and enhance existing web applications with impact assessment.
• Support production systems, including incident response and root cause analysis.
• Work with operations teams to ensure monitoring, backups, and disaster recovery capabilities.
• Ensure system security through fixes from security tests and vulnerability remediation.
• Document existing systems and create knowledge transfer materials for legacy codebases.
• Analyse dependencies and requirements to plan and implement modernisation roadmaps.

Skills

Troubleshooting

Maintenance

Production impact

Education

Bachelor's degree in Computer Science/Engineering/IT

Tools

Git

SVN

Oracle WebLogic Server

Linux/Unix

Job description

The Full Stack Engineer is responsible for maintaining, supporting, and modernising existing web applications and enterprise systems. The role requires expertise in legacy and modern technologies, system integration, and gradual modernisation approaches while ensuring system stability, security, and performance. Engineers must work in a collaborative environment, focusing on system reliability, incident resolution, change management and dependency management.

• Take ownership of system maintenance, including change requests, bug fixes, performance optimisation, and system stability improvements.
• Maintain and enhance existing web applications, including carrying out thorough impact assessment for any change requests.
• Support production systems, including incident response and root cause analysis.
• Work with operations teams to ensure system monitoring, backup procedures, and disaster recovery capabilities.
• Ensure system security through implementing fixes from security vulnerabilities identified during source code review, open source analysis, vulnerability assessment, penetration testing and other security tests.
• Document existing systems and create knowledge transfer materials for legacy codebases.
• Analyse existing system dependencies and requirements to plan and implement modernisation roadmaps.

Requirements

• Degree in Computer Science, Computer or Electronics Engineering, Information Technology, or related disciplines, or equivalent practical experience.
• Minimum 3-5 years experience in developing, maintaining and supporting enterprise systems.
• Experience with version control systems (Git, SVN).
• Strong troubleshooting and debugging skills.
• Strong understanding of impact of changes on live systems in production.

Technologies:

• Java with experience in older versions (e.g. Java 8).
• Spring Framework.
• Oracle WebLogic Server administration, deployment, and troubleshooting.
• Oracle Database and Sybase Database, with experience in troubleshooting existing procedures.
• Apache Struts, JSF, or other Java web frameworks.
• SiteMinder/LDAP/Active Directory integration for authentication and authorisation.
• File-based integrations and SFTP.
• Batch processing frameworks and scheduled job management.
• Basic Linux/Unix system administration for application deployment and troubleshooting.

Modernisation & Migration:

• Containerisation and container orchestration
• Modern frontend and backend frameworks such as React and Spring Boot
• Knowledge and experience with cloud deployments and products
• Good understanding of modern authentication and authorisation frameworks such as OIDC and experience with implementation

Security & Compliance:

• Experience with Source Code Review and Open Source Analysis
• Familiar with security best practices

Bonus Experience (Added Advantage):

• Experience with government or highly regulated industry systems.
• Experience with modernisation or redevelopment projects.
• Experience with event driven solutions such as Solace.
• Experience with using Azure DevOps (e.g. Azure Boards, Azure Pipeline).