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I'm a Senior Software Engineer with 8+ years building secure, high-availability backend systems for banking, payments, healthcare, and government platforms. I specialise in Java (8–21), Spring Boot, Microservices, .NET Core, and Node.js, with deep experience in payment processing, RTGS, and regulatory-grade financial integrations. I thrive on end-to-end ownership — from architecture and service design to CI/CD pipelines, observability with ELK/Prometheus/Grafana, and 24/7 production support on Linux. I’ve led teams of up to 12 engineers, delivered performance improvements (reducing API response times by ~40%), achieved 99.9% uptime, and cut manual operations by 70%+ through automation.…I'm a Senior Software Engineer with 8+ years building secure, high-availability backend systems for banking, payments, healthcare, and government platforms. I specialise in Java (8–21), Spring Boot, Microservices, .NET Core, and Node.js, with deep experience in payment processing, RTGS, and regulatory-grade financial integrations. I thrive on end-to-end ownership — from architecture and service design to CI/CD pipelines, observability with ELK/Prometheus/Grafana, and 24/7 production support on Linux. I’ve led teams of up to 12 engineers, delivered performance improvements (reducing API response times by ~40%), achieved 99.9% uptime, and cut manual operations by 70%+ through automation.

G.M. SHOAIBUZZAMAN

Back-End Developer, Full Stack Developer, Web Developer, +2

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I'm a Senior Software Engineer with 8+ years building secure, high-availability backend systems for banking, payments, healthcare, and government platforms. I specialise in Java (8–21), Spring Boot, Microservices, .NET Core, and Node.js, with deep experience in payment processing, RTGS, and regulatory-grade financial integrations. I thrive on end-to-end ownership — from architecture and service design to CI/CD pipelines, observability with ELK/Prometheus/Grafana, and 24/7 production support on Linux. I’ve led teams of up to 12 engineers, delivered performance improvements (reducing API response times by ~40%), achieved 99.9% uptime, and cut manual operations by 70%+ through automation.…I'm a Senior Software Engineer with 8+ years building secure, high-availability backend systems for banking, payments, healthcare, and government platforms. I specialise in Java (8–21), Spring Boot, Microservices, .NET Core, and Node.js, with deep experience in payment processing, RTGS, and regulatory-grade financial integrations. I thrive on end-to-end ownership — from architecture and service design to CI/CD pipelines, observability with ELK/Prometheus/Grafana, and 24/7 production support on Linux. I’ve led teams of up to 12 engineers, delivered performance improvements (reducing API response times by ~40%), achieved 99.9% uptime, and cut manual operations by 70%+ through automation.

Available to hire

I’m a Senior Software Engineer with 8+ years building secure, high-availability backend systems for banking, payments, healthcare, and government platforms. I specialise in Java (8–21), Spring Boot, Microservices, .NET Core, and Node.js, with deep experience in payment processing, RTGS, and regulatory-grade financial integrations.

I thrive on end-to-end ownership — from architecture and service design to CI/CD pipelines, observability with ELK/Prometheus/Grafana, and 24/7 production support on Linux. I’ve led teams of up to 12 engineers, delivered performance improvements (reducing API response times by ~40%), achieved 99.9% uptime, and cut manual operations by 70%+ through automation.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Intermediate

Language

Work Experience

Backend Engineer at Sabuydee Soft Company Limited

October 1, 2025 - Present

Design and maintain secure payment backend services in Java Spring Boot, Node.js, and microservices for financial and QR-based payment products. Built Payment QR generation systems with time-based expiration, validation, and transaction handling aligned to real-world banking workflows. Developed reconciliation APIs that improved transaction accuracy and payment verification reliability. Built internal automation tools reducing repetitive manual operations by 70%+, enabling lean teams to deliver higher output. Collaborated with cross-functional teams to troubleshoot production issues, tune performance, and ship stable releases across Linux environments.

Lead Software Engineer at LEADS Corporation Limited

January 1, 2025 - October 1, 2025

Led backend development for banking and financial systems using Java Spring Boot, Microservices, and C# .NET in a high-availability enterprise environment. Core contributor to migrating a legacy banking core to a modern Java microservices ecosystem. Delivered RTGS transaction processing solutions aligned with Bangladesh Bank regulations using XML-to-C# serialization and secure transaction validation. Designed Spring Boot services with dual-database integration via JTA, stored procedures, and AOP-based centralized logging — improving consistency and traceability. Drove sprint planning, code reviews, mentoring, and stakeholder communication across multiple delivery teams of 8–12 engineers.

Senior Software Engineer / Team Lead at Nirupon Limited

July 1, 2021 - December 1, 2024

Led end-to-end delivery of Hospital Management System, Education Management System, and EFDMS VAT Collection System used across regulated industries. Designed scalable microservices using Java 17, Spring Boot 3.x, and PostgreSQL; reduced API response times by ~40% through query optimization and caching. Built backend services in C# / .NET Core and Angular frontend modules deployed across AWS, on-premise, and Windows Server (IIS). Configured high-availability setups using Nginx, HAProxy, and Virtual IPs achieving 99.9% uptime; integrated ELK Stack for centralized logging and faster incident response. Developed secure APIs for VAT and financial systems with Spring Security, JWT, and encryption to meet regulatory compliance. Managed sprint planning, code reviews, and cross-team coordination, consistently meeting project milestones.

Programmer at IBCS-Primax Software (Bd) Ltd.

December 1, 2020 - July 1, 2021

Core developer on SDPP (Integrated Digital Planning Platform), a Bangladesh Government project under the Planning Ministry used for nationwide project planning and approval workflows. Built microservices in Java 11 using Spring Boot, Spring Cloud Gateway, Eureka Server, and Config Server to support a scalable distributed architecture. Implemented distributed tracing with Zipkin, improving observability and reducing troubleshooting time across services. Developed Angular 11 frontend modules and contributed to BOF ERP modules covering inventory, HRM, purchasing, role management, and reporting.

Software Engineer at SoftByte IT Solution

October 1, 2017 - December 1, 2020

Developed ERP and business management solutions using Java, Groovy on Grails, and Spring Security across the full SDLC — requirement analysis through deployment and client support. Built hybrid Android and iOS mobile applications with the Ionic Framework, from initial architecture through production deployment.