Senior Java Backend Developer (Spring Boot / Quarkus / API)
Role Overview
We are looking for a highly skilled Senior Java Backend Developer with strong expertise in building scalable microservices and APIs. The ideal candidate will have hands-on experience with Spring Boot or Quarkus and API management using IBM API Connect (APIC). Experience in the Open Banking domain will be considered a strong advantage.
Key Skills for This Role
Full Job Posting
About CodeNinja
CodeNinja is a next-generation technology consulting firm specialising in AI-powered transformation, enterprise software delivery, and Quality Engineering. Headquartered in the Gulf region and operating across the MENA, South Asia, and global markets, CodeNinja partners with Tier-1 banks, government entities, and large enterprises to design, build, and run mission-critical technology programs.
With deep expertise in QA transformation, test automation, DevOps modernisation, and AI/ML engineering, CodeNinja's teams combine global delivery standards with in-market contextual knowledge — ensuring outcomes that are compliant, scalable, and commercially aligned with client objectives.
For the Client's Test Management Enablement & Automation engagement, CodeNinja brings a dedicated 12-person specialist team spanning Test Management, Automation Engineering, AI/ML, and Performance Testing — all governed under a structured 20-week program delivery framework.
About the Role
We are looking for a highly skilled Senior Java Backend Developer with strong expertise in building scalable microservices and APIs. The ideal candidate will have hands-on experience with Spring Boot or Quarkus and API management using IBM API Connect (APIC). Experience in the Open Banking domain will be considered a strong advantage.
Key Responsibilities
- Design, develop, and maintain scalable microservices using Spring Boot and/ Quarkus
- Build, publish, and manage APIs using IBM API Connect (APIC)
- Ensure high performance, security, and scalability of backend systems and APIs
- Collaborate with cross-functional teams including product, QA, and DevOps
- Troubleshoot, debug, and resolve production issues efficiently
- Follow best practices for clean code, testing, and system design
- Containerize applications using Docker and deploy on Kubernetes/OpenShift
- Implement authentication/authorization using OAuth2/JWT standards
- Write unit, integration, and contract tests
- Collaborate with DevOps on CI/CD pipelines
- Participate in code reviews, design discussions, Agile ceremonies
- Monitor, troubleshoot, and optimize microservices performance in production
Requirements
- 5+ years of experience in Java backend development
- Strong hands-on experience with Spring Boot and Quarkus
- Solid understanding of microservices architecture
- Familiarity with API security and performance optimization
- Java 11+ specifically (not just "Java backend development")
- OpenShift alongside Kubernetes (currently only Docker/K8s is nice-to-have — should move to required)
- Proficiency with Git and CI/CD tools (Jenkins, GitLab CI)
- Working knowledge of SQL/NoSQL databases
Nice to Have
- Experience in Open Banking or financial services domain
- Knowledge of OAuth2, JWT authentication
- Hands-on experience with Docker, Kubernetes, and cloud platforms (AWS, Azure, or GCP)
- Apache Kafka or other messaging/event-streaming platforms
- Observability tools — Prometheus, Grafana, ELK
- OpenShift alongside Kubernetes (currently only Docker/K8s is nice-to-have — should move to required)
- Why Join Us
- Opportunity to work on scalable, enterprise-level systems
- Collaborative and growth-focused environment
- Exposure to modern technologies and architecture
Why Join Us
Opportunity to work on scalable, enterprise-level systems
Collaborative and growth-focused environment
Exposure to modern technologies and architecture
Disclaimer
This job description outlines the primary responsibilities and qualifications for the role at the time of posting. It is not exhaustive and may evolve in line with business needs and project requirements. CodeNinja reserves the right to modify role scope as the engagement progresses.
All candidates will be subject to standard background verification. Onsite positions require compliance with the client's site access, security, and NDA policies. CodeNinja is an equal opportunity employer and welcomes applications from all qualified individuals regardless of background.
About CodeNinja
Apply for this job in 1 click
Skip the repetitive application forms
Install the Base Career Chrome Extension and autofill job applications across major job boards with your profile.
Trusted by over 500,000 job seekers on Base Career
More from this employer
More jobs at CodeNinja
UI/UX Specialist
Riyadh, KSA
The employer is seeking a UI/UX Specialist to own and evolve a bank’s design system across its digital channels. The role requires deep hands-on design-system experience, advanced Figma skills, accessibility and responsi
Senior IBM Business Automation Workflow (BAW) Developer - BPMS
Riyadh, KSA
Appian Developer - UI & Data Fabric
Riyadh, KSA
CodeNinja is seeking an experienced Appian Developer to build bilingual user interfaces and secure Data Fabric layers for bank applications. Candidates need at least six years of hands-on Appian development, 10+ years of
Appian Integration Developer
Riyadh, KSA
CodeNinja is seeking an experienced Appian Integration Developer to connect banking applications with core banking, enterprise platforms, and national services. The role requires 10+ years of overall experience, includin
Appian QA & Automation Engineer
Riyadh, KSA
The employer is seeking a senior Appian QA and Automation Engineer to own quality and automated testing for critical banking applications. The role includes test strategy, automation, CI/CD integration, performance testi
UI/UX Specialist
Riyadh, KSA
UI/UX Specialist
Riyadh, KSA
Senior PL/SQL Developer - ODS
Riyadh, KSA
Senior IBM Business Automation Workflow (BAW) Developer - BPMS
Riyadh, KSA
Senior IBM App Connect Developer - Middleware
Riyadh, KSA
Appian Developer - UI & Data Fabric
Riyadh, KSA
Appian Integration Developer
Riyadh, KSA
Appian QA & Automation Engineer
Riyadh, KSA