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Jubair Hossain

@jubairhossain1

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Senior Full Stack Engineer delivering scalable, high-performance web applications with React, Node.js, and AWS.

Zimbabwe

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What I'm looking for

I’m looking to build secure, high-performance products in Agile teams, collaborate across time zones, and keep pushing measurable improvements—performance, reliability, and developer quality—while staying open to learning new technologies.

I’m a Senior Full Stack Engineer with 6+ years of experience, including 3+ years of fully remote delivery. I build scalable, high-performance web applications for global clients, with deep expertise across JavaScript (ES6), TypeScript, Node.js, Express.js, NestJS, and modern front-end frameworks like React and Next.js.

I focus on secure REST APIs, performance optimization, and clean, maintainable systems—documenting with OpenAPI and integrating seamlessly with front-ends. Recently, I architected a loyalty microservice with a 36% redemption rate, reduced load time by 60%, cut database load by 17%, and achieved 50x performance gains for analytical ETL processing in AWS/EKS-based environments.

Experience

Work history, roles, and key accomplishments

Current

Senior Full Stack Engineer

Current

Neustring

Feb 2025 - Present (1 year 4 months)

Architected an in-house loyalty microservice with cash and reward points, achieving a 36% redemption rate. Delivered secure Node/Express authentication with OAuth 2.0 MFA and improved React app performance, reducing load time 60% and increasing customer retention 19%.

Node NestJS React Next.js REST APIs OAuth 2.0 PostgreSQL Docker Kubernetes

Senior Full Stack Engineer

Greenlight

Jan 2023 - Jan 2025 (2 years)

Built an API-spec preprocessing modular monolith that achieved 100% accuracy for vulnerability detection by parsing AI-generated responses and storing structured results in MongoDB. Delivered major performance and deployment improvements, including 50x query speedups (15+ seconds to sub-second) and 60% more secure AWS EKS deployments via ArgoCD/Helm.

TypeScript Next.js MongoDB ArgoCD Kubernetes ETL Data Visualization REST APIs

Software Engineer

mPower Social Enterprises Ltd.

Jul 2017 - Apr 2020 (2 years 9 months)

Developed core product components and client modules for 17+ projects using OOAD with SOLID and DRY principles. Improved performance and analytics outcomes by integrating GraphQL to reduce load time 11%, cutting site load time 25% with dashboards/reports, and boosting profit 6% by building an S3 bulk upload engine in Nest.js.

JavaScript TypeScript React GraphQL MongoDB NestJS AWS S3 HighCharts