Unison Group

Builds financial risk and compliance systems

Java Microservices API Developer

Backend EngineeringConfirmed live in the last 24 hours

Full-timeSingaporeNo salary listed

About the Job

Requirements

At least 7 years of Java backend development experience.
Strong hands-on experience with Java 17 or later and Spring Boot 3.x.
Strong experience with microservices and REST or GraphQL APIs.
Hands-on experience with AWS services including ECS, EC2, and RDS.
Experience with CI/CD using GitLab, AWS CodeCommit, and AWS CodePipeline.
Experience with infrastructure as code and cloud deployment.
Strong SQL, Oracle, and relational database knowledge.
Experience with Okta authentication and authorization.
Experience with MuleSoft and API integration.
Understanding of cloud security, monitoring, performance, and scalable application design.

Responsibilities

Design and develop Java-based microservices and REST or GraphQL APIs using Java 17 or later and Spring Boot 3.x.
Build scalable, secure, and high-performance backend solutions.
Develop integrations with MuleSoft, Okta, enterprise systems, and third-party systems.
Deploy and manage applications on AWS, including ECS, EC2, and RDS.
Develop and maintain CI/CD pipelines using GitLab and AWS CodePipeline or CodeCommit.
Work with SQL and Oracle databases and optimize queries and application performance.
Monitor and troubleshoot applications using Grafana and AWS CloudWatch.
Provide production support, resolve incidents, perform root cause analysis, and continuously improve existing services.
Collaborate with architects, DevOps, QA, and business teams throughout the software development life cycle.

Desired Qualifications

Knowledge of Docker and Kubernetes.
Experience with containerization and orchestration using Docker and Kubernetes.
Exposure to security best practices in cloud environments.
Familiarity with Agile and Scrum methodologies.

Java Microservices API Developer

Unison Group · Singapore, Singapore · Contract · Posted 2026-09-25

Workplace: on_site

Department: Manish

Description

We are looking for an experienced Java Backend Developer to design, develop, and maintain scalable backend services, APIs, and microservices within a cloud-native AWS environment.

The role will be responsible for developing robust and high-performing backend solutions, integrating with enterprise platforms and third-party systems, and continuously improving the reliability, scalability, security, and performance of backend applications. The developer will also contribute to production support, troubleshooting, and continuous improvement of existing services.

Key Responsibilities

• Design and develop Java-based microservices and REST/GraphQL APIs using Java 17+ and Spring Boot 3.x.

• Build scalable, secure, and high-performance backend solutions.

• Develop integrations with MuleSoft, Okta, and enterprise systems.

• Deploy and manage applications on AWS (ECS, EC2, RDS).

• Develop and maintain CI/CD pipelines using GitLab and AWS CodePipeline/CodeCommit.

• Work with SQL/Oracle databases and optimize queries and application performance.

• Monitor and troubleshoot applications using Grafana and AWS CloudWatch.

• Participate in production support, incident resolution, RCA, and continuous improvement.

• Collaborate with architects, DevOps, QA, and business teams throughout the SDLC.

Requirements

• 7+ years of Java backend development experience.

• Strong hands-on experience with Java 17+ & Spring Boot 3.x.

• Strong experience in Microservices, REST/GraphQL APIs.

• Hands-on AWS: ECS, EC2, RDS.

• Experience with CI/CD: GitLab, AWS CodeCommit, CodePipeline.

• Experience with IaC and cloud deployment.

• Strong SQL/Oracle and relational database knowledge.

• Experience with Okta authentication/authorization.

• Experience with MuleSoft/API integration.

• Knowledge of Docker/Kubernetes is an advantage.

• Understanding of cloud security, monitoring, performance, and scalable application design.

Good to Have

• Experience with containerization and orchestration (Docker, Kubernetes)

• Exposure to security best practices in cloud environments

• Familiarity with Agile/Scrum methodologies

Apply

Apply at Unison Group

About the Company

Unison Group

Builds financial risk and compliance systems

Unison Group builds technology systems for financial institutions that need to manage risk, meet reporting rules and modernize their operations. Its consultants work across liquidity, market and credit risk, combining financial knowledge with software implementation and data analysis. The business also designs cloud infrastructure and develops custom applications, connecting these systems with the information and processes clients already use. It earns money through consulting, technology implementation and engineering services for enterprises, with work ranging from system design to deployment. Founded as Unison Consulting in 2012, the group is headquartered in Singapore.

Company size: 201-500
Company stage: Not listed
Total funding: Not listed
Headquarters: Not listed
Founded: 2012

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