We are looking for a highly skilled Senior Java API Developer to design, develop, and optimize scalable backend services and RESTful APIs. You will play a key role in architecting secure, high-performance systems, mentoring junior developers, and driving engineering best practices across the team.
This role requires strong hands-on coding ability, architectural thinking, and experience building production-grade APIs in cloud or enterprise environments.
· Design, develop, and maintain scalable RESTful APIs and microservices using Java and Spring Boot.
· Architect secure, high-availability backend systems with performance optimization in mind.
· Implement clean, testable, and maintainable code following SOLID principles.
· Optimize application performance, troubleshoot bottlenecks, and resolve production issues.
· Collaborate with frontend developers, DevOps, QA, and product teams to deliver high-quality features.
· Participate in architecture discussions and technical design reviews.
· Implement API security standards (OAuth2, JWT, API Gateway policies).
· Ensure code quality through unit testing, integration testing, and code reviews.
· Mentor junior developers and promote engineering best practices.
· Contribute to CI/CD pipelines and DevOps improvements.
Requirements
· 5+ years of backend development experience.
· Strong expertise in Java (8/11/17+).
· Solid experience with Spring Boot, Spring MVC, Spring Security.
· Hands-on experience building RESTful APIs.
· Experience with microservices architecture.
· Strong knowledge of SQL (MySQL/PostgreSQL/Oracle) and ORM frameworks (Hibernate/JPA).
· Experience with API security (OAuth2, JWT).
· Familiarity with Git, Maven/Gradle.
· Experience working with Docker and CI/CD pipelines.
· Strong understanding of data structures, concurrency, and multithreading.
Benefits
Annual Leave (AL): Up to 21 days per year
Medical Leave (ML): 12 days per annum
Medical Coverage provided
Performance Bonus: 2 bonuses per year
Public Holiday Replacement Leave
Optical and Dental Coverage
Unison Consulting was launched in Singapore on September 2012, the hub of the financial industry, with innovative visions in the technocratic arena. We are a boutique next-generation Technology Company with strong business-interests in Liquidity risk, Market Risk, Credit Risk and Regulatory Compliance.
Unison provides technology consulting and services to implement Risk Management and Risk Analytics System for Financial Institutions. Our services suite comprises of Techno-Functional consulting, systems integration, Business Intelligence, information management, and custom development of IT solutions, plus project management expertise for financial institutions.
We have expertise in latest cutting edge technology to achieve better total cost of ownership. Through our qualified professionals, we assist you drive your unique risk management strategies, whether that means efficient monitoring, improving risk appetite of the financial institutions, complying with regulations, or capturing growth opportunities through innovation, this is what maximizes your decision taking potential. At Unison Consulting, we view clients as partners, and our success is only measured by the success of our partners. So we put it all on the table in order to exceed expectations.
Our staff consists of young, energetic and innovative consultants who are never afraid to challenge the conventions and push the boundaries in an effort to help our clients. For every project, no matter how large or how small, we strive to not only meet your needs, but deliver a showcase in your field.
