Information Technology Consultant

PERSOL; Singapore; On-site; SGD 90,000 - 150,000; Full time

Job summary

PERSOL is seeking an experienced Full Stack Developer to design and deliver a scalable, secure certificate management solution. You will contribute to both backend services (Java 8/17/21) and frontend components (Angular), while optimizing MS SQL databases and integrating Keycloak IdP for authentication.

The role involves deploying on Linux and AWS, ensuring security and compliance, and collaborating with multiple teams.

Qualifications

• 5+ years of relevant software development experience.
• Strong full-stack development and problem-solving skills.
• Experience building secure and scalable enterprise applications.
• Good understanding of application security and authentication/authorization.
• Strong collaboration and communication skills.
• Ability to take ownership of technical deliverables and work effectively with customer development teams.

Responsibilities

• Design, develop, enhance, and maintain the certificate management solution.
• Develop backend services and APIs using Java 8 / 17 / 21.
• Develop and enhance frontend components using Angular.
• Design and optimize database components using MS SQL.
• Integrate authentication and authorization using Keycloak IdP.
• Develop and deploy applications within Linux and AWS environments.
• Ensure the solution meets security, scalability, performance, and compliance requirements.
• Troubleshoot application issues and implement appropriate fixes and improvements.
• Collaborate with Development, Security, Infrastructure, and other technical teams.
• Participate in code reviews, testing, deployment, and technical documentation.

Skills

Full-stack development

Problem solving

Collaboration & communication

Ownership

Tools

Java

Angular

MS SQL

Linux

Keycloak IdP

AWS

REST APIs

Git

CI/CD

Job description

We are looking for experienced Full Stack Developer to work collaboratively with the customer development team to design and deliver a scalable, secure, and compliant certificate management solution.

• Design, develop, enhance, and maintain the certificate management solution.
• Develop backend services and APIs using Java 8 / 17 / 21.
• Develop and enhance frontend components using Angular.
• Design and optimize database components using MS SQL.
• Integrate authentication and authorization using Keycloak IdP.
• Develop and deploy applications within Linux and AWS environments.
• Ensure the solution meets security, scalability, performance, and compliance requirements.
• Troubleshoot application issues and implement appropriate fixes and improvements.
• Collaborate with Development, Security, Infrastructure, and other technical teams.
• Participate in code reviews, testing, deployment, and technical documentation.

Requirements:

• 5+ years of relevant software development experience.
• Strong full-stack development and problem-solving skills.
• Experience building secure and scalable enterprise applications.
• Good understanding of application security and authentication/authorization.
• Strong collaboration and communication skills.
• Ability to take ownership of technical deliverables and work effectively with customer development teams.

Technical Skills:

Primary Stack

• Java 8 / 17 / 21
• Angular
• MS SQL
• Linux
• Keycloak IdP
• AWS
• REST APIs / Microservices
• Git and CI/CD practices

Good to Have

• Experience with Certificate Lifecycle Management (CLM).
• Knowledge of PKI, digital certificates, Certificate Authorities (CA), SSL/TLS, certificate renewal and revocation.
• Experience developing security-focused or compliance-driven enterprise applications.