Backend Engineer (Java Microservices – Card & Unsecured Loan)
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Salary
$36k – $63k per year (gross)
Location
In office (Singapore)
Seniority
Middle · 3+ years exp
Employment
Full-Time
First seen by Alion on Nov 5, 2026.
Overview
Company
Impact
Profile match
Trinity Consulting Services is a privately owned IT consulting, services and recruitment company headquartered in Singapore that delivers digital transformation, managed application, cloud, SAP, infrastructure, cybersecurity and data analytics services. Alongside its technology work, it provides executive and retained search, contract staffing, recruitment process outsourcing and payroll services, placing IT professionals on client projects including Singapore public sector and wealth management engagements. Its current openings include solution architects, Java and Spark developers, AWS cloud and data engineers, computer vision engineers, database administrators and testers.
Job Requirements
- 3–6 years of hands-on backend development experience in enterprise environments.
- Strong proficiency in Java (11/17/21) and Spring Boot (Spring Web, Security, Data).
- Proven experience designing, developing, and deploying RESTful APIs and microservices using OpenAPI/Swagger.
- Strong knowledge of relational databases (PostgreSQL, MariaDB, Oracle), SQL optimization, indexing, and transaction management.
- Hands-on experience with Apache Kafka or RabbitMQ for event-driven messaging.
- Practical experience with Docker and Kubernetes/OpenShift.
- Proficiency in automated testing using JUnit 5, Mockito, and Testcontainers.
- Experience working in Agile/Scrum or Kanban environments.
- Strong analytical, problem-solving, communication, and teamwork skills.
- Experience with legacy Java EE/J2EE applications (EJB, Servlets, SOAP/WSDL, WebSphere, WebLogic, JBoss).
- Banking, Financial Services, or FinTech experience, particularly in credit cards and unsecured lending.
- Knowledge of loan origination, credit bureau integration, revolving credit lines (Cashline), and Straight-Through Processing (STP).
- Familiarity with microservice resilience patterns, API contract testing, and distributed tracing (Resilience4j, Pact, OpenTelemetry, Jaeger).
Skills
Communication, Manual Testing, Security, Oracle, PostgreSQL, Mockito, Indexing, Problem Solving, Technological Proficiency, RabbitMQ, MariaDB, Apache Kafka, Java, Docker Container, Experience Design, Deployment
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