// Hello, I'm

Shaikh Abdul Hameed Mannan

Senior Java Backend Developer / Tech Lead

15+ years designing and shipping backend systems for banks, payment processors and insurers across India and Malaysia — Java 21, Spring Boot, Kafka, reactive microservices, and the CI/CD pipelines that get them to production.

Get in touch View experience
  • 15+Years experience
  • 13Companies & clients
  • 5Engineers led

01. About me

I'm a backend engineer who enjoys the hard, unglamorous parts of software: payment flows that must never double-charge, batch jobs that must finish before the bank opens, and APIs that stay fast under real production load.

I've worked with Maybank, UOB, AXA, Takaful Malaysia, TSYS and Aleph Labs, modernising legacy JSF/Struts systems into Spring Boot services, building REST and gRPC APIs, and leading small teams through delivery and production support.

Currently based in Kolkata, India and open to opportunities in Malaysia/SEA, Ireland/Europe, or fully remote.

  • LocationKolkata, India
  • FocusFintech & banking backends
  • EducationBCA, Sikkim Manipal University
  • Open toRelocation & remote

02. Skills

Languages & Frameworks

  • Java 8/11/17/21
  • Spring Boot
  • Spring Cloud
  • WebFlux
  • Spring Batch
  • JPA / Hibernate
  • MyBatis
  • Python (basic)

Architecture & Messaging

  • Microservices
  • Apache Kafka
  • JMS
  • gRPC
  • REST / OpenAPI
  • Saga pattern
  • API Gateway
  • OAuth2 / JWT

Databases

  • PostgreSQL
  • Oracle
  • MySQL
  • DB2
  • MSSQL
  • DynamoDB

Cloud & DevOps

  • AWS (EC2, S3)
  • Docker
  • Jenkins
  • GitHub Actions
  • ArgoCD
  • OpenShift
  • Splunk
  • SonarQube

Testing & Tools

  • JUnit
  • Mockito
  • Gradle
  • JIRA
  • Git

Frontend

  • Angular
  • JSP
  • ReactJS (basic)

03. Experience

  1. Aug 2025 — Present

    Senior Java Developer @ Aleph Labs, Malaysia

    • Leading a team of 5 engineers building reactive services with Java 21 and WebFlux.
    • Designed APIs with OpenAPI; persistence on JPA and DB2.
    • Drove performance and reliability improvements using Splunk monitoring.
  2. Jan 2024 — Feb 2025

    Senior Java Developer @ Takaful Malaysia (via AMK)

    • Built Spring Boot services on Oracle with Spring Batch processing.
    • Delivered third-party integrations for insurance workflows.
  3. Dec 2022 — Nov 2023

    Senior Java Backend Developer / Team Lead @ UOB (via Accion Labs)

    • Developed microservice APIs for banking platforms.
    • Owned CI quality gates with Jenkins and SonarQube.
    • Led production troubleshooting and incident resolution.
  4. Sep 2021 — Oct 2022

    Senior Java Backend Developer @ TSYS (via UST Global)

    • Built REST and gRPC services on PostgreSQL and AWS DynamoDB.
    • Deployed with ArgoCD; introduced YAML-driven integration tests.
  5. Sep 2020 — Aug 2021

    Team Lead / Backend Developer @ IT Essentials

    • Built the QuikEat food-delivery backend from scratch — rider tracking on OpenStreetMap, merchant onboarding, orders and SMS.
    • Secured with OAuth2; reactive stack on WebFlux; hosted on Azure.
  6. Nov 2019 — Jul 2020

    Senior Java System Developer @ Diebold (via Tentacle)

    • Worked on Proview, PVIM and ProDash ATM-management products.
    • Diagnosed and fixed a recurring hourly multithreading crash.
  7. Aug 2019 — Nov 2019

    Senior Java Backend Developer @ AXA (via Capgemini)

    • Modernised legacy JSF/Struts apps (MARCMY, EMEMBERMY, ECLAIMMY) to Spring Boot with OAuth2/JWT.
  8. Jan 2018 — Jul 2019

    Senior Java Backend Developer @ Maybank (via HTC Global)

    • Built REST services for Maybank2u with tokenization, JMS messaging, on WebSphere.
Earlier roles (2010 — 2018)
  • LearningMate (via Experis) — Jun 2017 – Jan 2018 · AWS EC2, Jenkins, Docker
  • NIIT Technologies — Jun 2015 – Jul 2016 · Online exam platform for Adecco
  • Interra IT — Nov 2014 – May 2015 · Verio order-management APIs
  • Sciegra — Jan 2013 – Jul 2014
  • Orchid Technical Consultancy — May 2010 – Nov 2012

04. Projects

ZaykaHub

Food-ordering microservices platform

Multi-module Spring Boot microservices system for food ordering. I designed and built the payment service.

  • Spring Boot
  • Microservices
  • Payments
ISO 20022

ISO 20022 payments service

Spring Boot service handling ISO 20022 payment messages — built around modern European payments standards.

  • Spring Boot
  • ISO 20022
  • Fintech
QuikEat

Food-delivery backend

End-to-end backend built from scratch: live rider tracking, merchant registration, order lifecycle and SMS notifications.

  • WebFlux
  • OAuth2
  • Azure

More on GitHub →

05. Let's talk

Hiring for a senior backend or tech-lead role, or need help with a Java/Spring system? My inbox is open.

sheikhhameed007@gmail.com