Senior Java Software Engineer

Job Role:

Senior Java & Axway API Gateway Developer

Work Location:

Changi Business Park

Assignment Duration:

12 Months(Extendable)

Mandatory Skills:

Key Skills & Experience

• 6+ years of experience in Java development and API technologies.
• Strong hands-on experience with Axway API Gateway , Policy Studio, API Manager, and .FED deployments.
• Proficient in Java, Microservices, REST APIs, Maven, Git/Bitbucket, and CI/CD pipelines .
• Experience in API design, development, deployment, and production support.
• Strong troubleshooting and incident management skills.

API Security Expertise (Mandatory)

• Deep understanding of OAuth 2.0 , including Client Credentials, Authorization Code, JWT Bearer, and Refresh Token flows.
• Strong knowledge of JWT token generation, validation, claims, signing, and encryption .
• Hands-on experience implementing and managing API security policies within Axway API Gateway.
• Experience with PGP encryption/decryption , digital signatures, key management, and certificate handling.
• Good understanding of SSL/TLS, mTLS, PKI, OAuth, OpenID Connect, and API threat protection .
• Knowledge of OWASP API Security Top 10 and enterprise API security best practices.

Responsibilities

• Design, develop, and support enterprise APIs and integration solutions.
• Configure and maintain Axway API Gateway policies and security controls.
• Implement authentication, authorization, encryption, and API protection mechanisms.
• Work closely with application, infrastructure, security, and DevOps teams.
• Perform root cause analysis, troubleshooting, and performance optimization for API platforms.
• Support API deployments, governance, and lifecycle management activities.

Nice to Have

• Experience with Kafka, IBM MQ, Docker, Kubernetes, Splunk, Dynatrace, AWS, or Azure.
• Prior experience in banking, financial services, or large enterprise environments.