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Mobarak Hosen

@mobarakhosen

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I architect high-throughput Java and Kotlin microservices, APIs, and cloud-native SaaS platforms.

Bangladesh

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What I'm looking for

I'm looking to lead the architecture and delivery of scalable, secure cloud-native platforms, mentor engineering teams, and solve complex distributed-systems challenges with strong Agile and engineering standards.

I'm currently architecting high-performance platforms at TechnoNext Software Limited, including an API Gateway serving 10M+ daily requests and Map Phantom, a SaaS platform for user management, usage tracking, and automated billing.

Previously at BJIT Limited, I led teams migrating a legacy monolith to Java and Spring Boot microservices, improving performance by 60%. I also helped launch Pocketalk Translation and operated the event-driven Pocketalk Ventena 2 IoT backend at 99.9% production uptime.

I build secure, scalable systems with Java, Kotlin, Spring Boot, AWS, Docker, Kubernetes, and distributed messaging. I mentor engineers, raise architecture and code-review standards, and use AI-assisted workflows to move faster without sacrificing production quality.

Experience

Work history, roles, and key accomplishments

Current

Software Architect

Current

TechnoNext Software Limited

Sep 2024 - Present (2 years)

Designed and led a high-performance API Gateway for 10+ microservice platforms, reducing annual third-party costs by 70-80% and processing 10M+ daily requests. Implemented multi-tier caching and architected the Map Phantom SaaS platform.

Java Kotlin Spring Boot Redis Docker Kubernetes AWS OAuth JWT Rate limiting API Gateway Microservices gRPC GraphQL RabbitMQ Lang Chain LLM Clean Architecture DDD

Principal Software Engineer

BJIT Limited

Jul 2022 - Aug 2024 (2 years 1 month)

Led engineering teams to migrate a legacy monolith to Java and Spring Boot microservices, boosting performance by 60%. Designed and operated an event-driven IoT backend achieving 99.9% uptime and built serverless test automation.

Java Spring Boot Microservices AWS Lambda Docker Jenkins CI CD IoT Event Driven Architecture Scrum

Senior Software Engineer

BJIT Limited

Dec 2019 - Jul 2022 (2 years 7 months)

Implemented key features for the Pocketalk Voice Translator app, boosting user engagement by 35% through optimized APIs. Developed and delivered the cross-platform Sensire Task Assistant app using Flutter.

API Optimization Flutter Mobile Development Secure Coding SDLC

Software Engineer

Field Information Solutions GmbH

Jun 2018 - Dec 2019 (1 year 6 months)

Developed and launched Android applications with custom offline synchronization algorithms and real-time location tracking. Reduced sync data loss by 99% through optimized database schema design and transactional logic.

Android Offline Synchronization Database Design Transactional Logic Real Time Tracking

Software Engineer

Atom AP Limited

Oct 2016 - Apr 2018 (1 year 6 months)

Developed mobile wallet apps from scratch for the Japanese market and built food delivery mobile applications, designing database structures and REST APIs.

Mobile Development Database Design REST APIs