Senior Java Developer - Cash Management Platform Transformation

Trinity-Consulting-Services-Pte.-Ltd.; Singapore; On-site; SGD 90,000 - 130,000; Full time

Job summary

Trinity-Consulting-Services-Pte.-Ltd. in Singapore seeks an experienced Java Developer to deliver enterprise applications with a strong focus on Domain Driven Design, microservices, and modern Java stacks including Spring Boot.

You will mentor teams, lead technical decisions, and drive robust architecture across services. The role requires hands-on coding, designing patterns, and implementing secure, scalable solutions while collaborating in an Agile environment using Docker, Kubernetes, and

Qualifications

• Bachelor's degree or higher in CS, SE, or related technical discipline.
• Proven experience as a Java Developer with enterprise app development.
• Experience in senior-level responsibilities such as technical decision-making, cross-team coordination, and mentoring.
• Strong OO fundamentals and domain-driven design with bounded contexts and domain models.
• Proficiency in Java design patterns and modern Java (Spring Boot) frameworks.
• Experience with microservices, layered and event-driven architectures.
• Hands-on with Docker, Kubernetes, and OpenShift; cloud storage like AWS S3.
• Familiarity with GitLab CI/CD pipelines and ArgoCD; BDD testing (Cucumber, Gherkin).
• Knowledge of Agile/Scrum and sprint-based delivery.

Responsibilities

• Translate functional requirements into scalable technical solutions.
• Participate in code reviews and enforce coding standards.
• Drive delivery with balance of speed, debt, and maintainability.
• Mentor and coordinate across teams; contribute to architecture decisions.
• Maintain secure coding practices and production-readiness.

Skills

Java development

OO fundamentals

Domain Driven Design

Java design patterns

Microservices architecture

Spring Boot

Agile/Scrum

Docker

Kubernetes

OpenShift

MongoDB

PostgreSQL

AWS S3

GitLab CI/CD

ArgoCD

BDD testing (Cucumber, Gherkin)

Education

Bachelor's degree in CS/SE or related

Tools

Docker

Kubernetes

OpenShift

GitLab CI/CD

ArgoCD

Job description

Education and experience:

• Bachelor's degree or higher in Computer Science, Software Engineering, or a related technical discipline.
• Proven experience as a Java Developer, including significant hands-on experience in enterprise application development.
• Demonstrated experience in senior-level responsibilities such as technical decision-making, cross-team coordination, and mentoring.

Core required skills and experience:

• Solid experience as a Java Developer with strong object-oriented programming fundamentals.
• Experience and comfort with Domain Driven Design, including bounded contexts, aggregates, entities, value objects and domain models.
• Proficiency in Java Design Patterns (for example: Singleton, Factory, Builder, Observer, Strategy).
• Experience in software architecture design (microservices, layered, event-driven architectures).
• Hands-on experience with the latest JDK and Spring Boot framework.
• Familiarity with Agile and Scrum methodologies and sprint-based delivery.
• Experience with containerization and orchestration tools: Docker, Kubernetes, and OpenShift.
• Working knowledge of databases and storage: MongoDB, PostgreSQL, and AWS S3.
• Experience with GitLab CI/CD pipelines and ArgoCD for GitOps-based deployments.
• Experience writing and maintaining BDD (Behavior-Driven Development) tests (for example: Cucumber, Gherkin).

Engineering and delivery expectations:

• Strong ability to translate functional requirements into scalable, maintainable technical solutions.
• Solid understanding of secure coding principles, resiliency patterns, and production-readiness practices.
• Experience performing code reviews, driving coding standards, and improving overall software quality.
• Ability to diagnose and resolve complex issues across development, integration, and production environments.
• Practical experience balancing delivery speed, technical debt, and long-term maintainability.

Domain knowledge (advantageous):

• Experience or exposure to the payments, finance, or banking domain is a strong plus.