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Shaikh Abdul Hameed Mannan

@shaikhabdulhameedman

Senior Java Backend Engineer at Aleph-labs Malaysia, leading five engineers while developing Java 21 microservices and REST APIs.

Malaysia

Message

At Aleph-labs Malaysia, I develop and enhance Spring Boot microservices and REST APIs using Java 21, WebFlux, JPA, and DB2. I lead a backend team of five engineers and contribute to code reviews, deployment, and production support.

At IT Essentials Sdn Bhd, I worked across the software lifecycle on QuikEat, building backend services for food orders, merchant registration, rider tracking, and SMS integration. I also worked on implementing Azure cloud.

Across banking, insurance, and other enterprise projects, I’ve developed and enhanced APIs and integrations using Java, Spring Boot, and microservices. My work has included API testing, CI/CD activities, production troubleshooting, and performance improvements.

Experience

Work history, roles, and key accomplishments

Current

Senior Java Developer

Current

Aleph-labs Malaysia

Aug 2025 - Present (1 year 1 month)

Developed and enhanced Spring Boot microservices and RESTful APIs using Java 21, WebFlux, JPA, DB2, and OpenAPI. Led a backend team of 5 engineers and contributed to code reviews, troubleshooting, CI/CD deployment activities, and production support.

Java 21+Spring Boot Webflux JPA DB2 OpenAPI Microservices REST APIs CI CD Splunk Monitoring

Senior Java Developer

Takaful Malaysia

Jan 2024 - Feb 2025 (1 year 1 month)

Developed and enhanced Spring Boot applications with RESTful APIs and Oracle database. Implemented Spring Batch development and integrated third-party applications.

Spring Boot REST APIs Maven SQL Oracle SpringBatch

Senior Java Backend / Team Lead

UOB Bank

Dec 2022 - Nov 2023 (11 months)

Designed and enhanced scalable backend APIs using Spring Boot microservices architecture. Participated in code reviews, Jenkins CI/CD pipelines, SonarQube quality checks, and production troubleshooting.

Spring Boot Microservices REST APIs Jenkins SonarQube CI CD

Senior Java Backend Developer

TSYS

Sep 2021 - Oct 2022 (1 year 1 month)

Created and enhanced APIs integrating with other modules via microservices, saving to PostgreSQL and AWS DynamoDB. Wrote integration test cases to ensure end-to-end functionality.

Spring Boot REST APIs gRPC DynamoDB Microservices PostgreSQL ArgoCD Jenkins JPA

Team Lead / Backend Developer

IT Essentials Sdn Bhd

Sep 2020 - Aug 2021 (11 months)

Participated in the entire software development lifecycle and designed backend services for a food app named QuikEat, including rider tracking, merchant registration, order receiving, and SMS integration. Implemented Azure cloud.

REST Spring Boot OAuth Swagger Maps OpenStreetMap Agile JPA Microservices UML Webflux Azure

Senior Java System Development

DIEBOLD Sdn Bhd

Nov 2019 - Jul 2020 (8 months)

Enhanced projects named Proview, PVIM, and Prodash, creating APIs to display data in graphs. Fixed a multithreading issue that occurred every hour after Tomcat server start.

Multithreading Spring Boot REST APIs MSSQL JPA

Senior Java Backend Developer

AXA LifeInsurance

Aug 2019 - Nov 2019 (3 months)

Enhanced projects MARCMY, EMEMBERMY, ECLAIMMY, and mobile app projects, migrating from JSF and Struts Hibernate to latest technologies. Created APIs from scratch referencing existing flows.

Spring Boot REST APIs OAuth JWT Hibernate Swagger JUnit4 Mockito Agile JPA Microservices

Senior Java Backend Developer

MayBank

Jan 2018 - Jul 2019 (1 year 6 months)

Worked with JMS and created RESTful web services from scratch, fetching data from M2U and saving to database after tokenization validation. Deployed on Websphere server.

REST APIs Spring Boot JMS Maven Agile Websphere JUnit4 Mockito Java 8 Microservices

Senior Java Backend Developer

LearningMate Pvt Ltd

Jun 2017 - Jan 2018 (7 months)

Created various APIs with test cases in an Agile project. Deployed and ran Jenkins, and managed AWS EC2 instances for deployment.

Mockito Jenkins Docker Swagger Sonar REST APIs Spring Boot Maven Oracle JUnit4 EC2

Senior Java Backend Developer

NIIT Technologies Ltd

Jun 2015 - Jul 2016 (1 year 1 month)

Worked for client Adecco, a job provider company, creating an online examination application.

Spring Boot REST APIs JSP JBoss Maven Agile Microservices

Senior Java Backend Developer

Interra Information Technologies Pvt Ltd

Nov 2014 - May 2015 (6 months)

Created APIs in the Order Management Module (OMS) with test cases for client Verio. Developed a new application from scratch consolidating APIs from different modules.