Java Microservices API Developer
- Level
- Senior
Not stated in the posting: salary, work type, visa.
Open. First seen 3 October 2026.
About the role
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
What this role asks for
Particular to this role
GitLab · Grafana · GraphQL · Microservices · Okta · Spring
Rare in Unison Group's other 132 open postings.
Standard for backend roles
AWS · Java · Kubernetes
Common in backend postings at any company.
In most of Unison Group's ads
SQL
Named in most of its open postings, whatever the role.
Read against Unison Group's other open postings on this site.
The team: Manish HIRES STEADILY
This role is one of 31 open in Manish. 14 were posted in the last 30 days and the oldest in May: a team that hires all year rather than one being built.
WHAT THE TEAM WORKS WITH, ACROSS ITS POSTINGS
SQL (17 of 31), Azure (14 of 31), CI/CD (14 of 31), Python (14 of 31), Machine Learning (13 of 31), AWS (12 of 31), Generative AI (10 of 31)
OTHER ROLES ON THIS TEAM
- SAS Data Engineering & Financial Risk Analytics Specialist posted Oct 14
- Java Microservices Developer posted Oct 13
- Full Stack Developer - Precious Metals Clearing (PMC) posted Oct 13
- AI Solution Architect posted Oct 2
- Senior AI Engineer - Banking posted Oct 1
- Scrum Master posted Sep 29
- AWS Cloud Architect posted Sep 25
- Data Architect - Banking posted Sep 25
- Qlik Developer - Banking posted Sep 25
- AI/ML Architect - Banking posted Sep 25
- Gen AI Engineer - Banking posted Sep 25
- Polisy Asia Developer - WFH posted Sep 24
- Technical Recruiter posted Sep 22
- AI Software Engineer posted Sep 7
- SUPPORT SPECIALIST & SOFTWARE INTEGRATOR posted Sep 4
- Chief Architect - Data Engineering (Databricks Practice) posted Aug 20
- Senior Databricks Solution Architect posted Aug 19
- AI Program Delivery Lead posted Aug 4
- Senior Databricks Solution Architect posted Jul 23
- AI Engineer (GenAI / RAG / LangGraph / Python) posted Jul 20
- AI Engineer (GenAI / RAG / LangGraph / Python) posted Jul 19
- AI Engineer (Generative AI / AI-ML / Microsoft Copilot) posted Jul 16
- AI Engineer - Forward Deployed Engineer posted Jul 16
- Senior Technical Recruiter - Singapore Market posted Jul 13
- Life400 Developer posted Jun 29
- Life400 Developer posted Jun 29
- AI Engineer (Azure AI Solutions) posted Jun 23
- AI Engineer (GenAI) posted Jun 23
- AI Data Scientist posted Jun 19
- Life400 Developer posted May 13
From the team and dates on Unison Group's own job board.
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