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I'm Syed Hussain Kazmi, a Senior Full-Stack Developer and Project Manager with over 6 years' experience delivering scalable, secure applications using React, Next.js, Node.js and AWS. I’ve led agile adoption, built robust CI/CD pipelines, and delivered 15+ high-impact projects across SaaS, e-commerce and real-time apps, while focusing on exceptional UX and client collaboration. I thrive on optimizing performance with SSR, GraphQL, Redis and microservices, deploying with Docker and Kubernetes on AWS, and mentoring teams to ship reliable software that drives business results.…I'm Syed Hussain Kazmi, a Senior Full-Stack Developer and Project Manager with over 6 years' experience delivering scalable, secure applications using React, Next.js, Node.js and AWS. I’ve led agile adoption, built robust CI/CD pipelines, and delivered 15+ high-impact projects across SaaS, e-commerce and real-time apps, while focusing on exceptional UX and client collaboration. I thrive on optimizing performance with SSR, GraphQL, Redis and microservices, deploying with Docker and Kubernetes on AWS, and mentoring teams to ship reliable software that drives business results.

Syed Hussain Kazmi

Full Stack Developer, Front-End Developer, Back-End Developer, +7

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I'm Syed Hussain Kazmi, a Senior Full-Stack Developer and Project Manager with over 6 years' experience delivering scalable, secure applications using React, Next.js, Node.js and AWS. I’ve led agile adoption, built robust CI/CD pipelines, and delivered 15+ high-impact projects across SaaS, e-commerce and real-time apps, while focusing on exceptional UX and client collaboration. I thrive on optimizing performance with SSR, GraphQL, Redis and microservices, deploying with Docker and Kubernetes on AWS, and mentoring teams to ship reliable software that drives business results.…I'm Syed Hussain Kazmi, a Senior Full-Stack Developer and Project Manager with over 6 years' experience delivering scalable, secure applications using React, Next.js, Node.js and AWS. I’ve led agile adoption, built robust CI/CD pipelines, and delivered 15+ high-impact projects across SaaS, e-commerce and real-time apps, while focusing on exceptional UX and client collaboration. I thrive on optimizing performance with SSR, GraphQL, Redis and microservices, deploying with Docker and Kubernetes on AWS, and mentoring teams to ship reliable software that drives business results.

Available to hire

I’m Syed Hussain Kazmi, a Senior Full-Stack Developer and Project Manager with over 6 years’ experience delivering scalable, secure applications using React, Next.js, Node.js and AWS. I’ve led agile adoption, built robust CI/CD pipelines, and delivered 15+ high-impact projects across SaaS, e-commerce and real-time apps, while focusing on exceptional UX and client collaboration.

I thrive on optimizing performance with SSR, GraphQL, Redis and microservices, deploying with Docker and Kubernetes on AWS, and mentoring teams to ship reliable software that drives business results.

Skills

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Expert

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Language

English

Fluent

Work Experience

Senior Full-Stack Developer at DynamasTech

March 1, 2022 - Present

Architected event-driven platforms using Kafka, WebSockets, Python, and Node.js; reduced data latency from 15 minutes to under 1 second for real-time insights across multi-tenant SaaS applications. Led cross-functional teams and implemented scalable architectures with a focus on reliability and observability.

Full-Stack Developer at Rack Solutions LLC

December 1, 2021 - September 29, 2025

Built multi-tenant CMS for healthcare clients using Next.js and Node.js on AWS (ECS, CloudFront); cut page load times from tens of seconds to under 2 seconds, automated ETL data migrations, and implemented secure authentication (JWT with RBAC).

Full-Stack Developer at Black Ends

April 1, 2019 - September 29, 2025

Rebuilt a legacy inventory system; integrated Redis caching for real-time multi-channel updates; created a unified REST API layer and integrated third-party APIs (Shopify, WooCommerce) to streamline stock and orders.

Full-Stack Developer at Freelance

October 1, 2024 - Present

Delivered 15+ high-impact SaaS, e-commerce, and real-time applications using React, Next.js, Node.js, and AWS; improved client engagement and conversion through performance optimization and UX enhancements.

Senior Full-Stack Developer at DynamasTech

March 1, 2022 - Present

Led event-driven platforms using Kafka, WebSockets, Python, and Node.js, reducing data latency for real-time insights from minutes to under a second. Architected scalable microservices and guided teams on best practices for performance and reliability.

Full-Stack Developer at Rack Solutions LLC

December 1, 2021 - September 29, 2025

Rebuilt multi-tenant CMS for healthcare clients with Next.js, Node.js, AWS ECS, and CloudFront; reduced page load times from tens of seconds to under 2 seconds; automated data migrations with Python ETL; implemented secure access with JWT authentication and RBAC.

Full-Stack Developer at Black Ends

April 1, 2019 - September 29, 2025

Rebuilt legacy inventory system with React and Node.js, cutting synchronization times from 24 hours to 5 seconds; integrated Redis caching for real-time multi-channel inventory updates; developed a unified REST API layer to connect sales, warehouses, and e-commerce databases; integrated third-party APIs (Shopify, WooCommerce) to automate stock updates and streamline order fulfillment.

Senior Full-Stack Developer at Freelance

October 1, 2024 - Present

Delivered 15+ high-impact projects across SaaS, e-commerce, and real-time applications using React, Next.js, Node.js, Python, and AWS; enhanced client engagement and conversion rates through performance optimization and UI/UX improvements.

Senior Full-Stack Developer at DynamasTech

March 1, 2022 - Present

Architected event-driven platforms using Kafka, WebSockets, Python, Node.js; reduced latency to under 1 second; built multi-tenant CMS with 70% infrastructure savings; modernized a logistics system and cut sync times by 95%.

Full-Stack Developer at Rack Solutions LLC

December 1, 2021 - September 29, 2025

Rebuilt multi-tenant CMS for healthcare clients with Next.js, Node.js, AWS ECS; cut page load times from 10s to under 2s; automated data migration with Python ETL; implemented secure access with JWT/RBAC; containerized APIs with Docker.

Full-Stack Developer at Black Ends

April 1, 2019 - September 29, 2025

Rebuilt legacy inventory system using React/Node; reduced latency; integrated Redis caching; created unified REST API layer connecting salons, warehouses, and e-commerce data; supported HIPAA-compliant access; on-boarded third-party APIs for stock updates.

Senior Full-Stack Developer & Project Manager at Freelance

October 1, 2024 - Present

Led 15+ high-impact projects across SaaS, e-commerce, and real-time applications using React, Next.js, Node.js, and AWS. Improved client engagement and conversion rates by optimizing performance and UI/UX. Implemented Agile practices (Scrum, Sprint Planning, Standups) and built CI/CD pipelines with GitHub Actions, Docker, and AWS. Enhanced page speed with server-side rendering, integrated GraphQL for flexible data querying, and established RBAC-based secure access strategies. Mentored junior developers and coordinated cross-functional teams in remote environments.

Full-Stack Developer at Rack Solutions LLC

December 1, 2021 - October 9, 2025

Led design and development of a multi-tenant CMS for healthcare clients using Next.js, Node.js, and PostgreSQL. Reduced page load times from tens of seconds to under 1 second and improved data accuracy with automated Python ETL migrations. Implemented secure access (JWT, RBAC), built RESTful APIs, and integrated Redis caching with Docker/Kubernetes deployments on AWS. Established end-to-end testing and CI/CD workflows to improve reliability and delivery speed.

Full-Stack Developer at Black Ends

April 1, 2019 - October 9, 2025

Rebuilt legacy inventory and order management systems, cutting sync times and boosting responsiveness. Integrated Redis caching for real-time inventory updates, developed a unified REST API, and implemented multi-channel integrations to improve data accuracy and customer experience.

Full-Stack Developer at Dynamas Tech

March 1, 2022 - Present

Architected event-driven platforms using Kafka, WebSockets, Python, and Node.js; reduced latency to sub-second insights. Built multi-tenant microservices on AWS (PostgreSQL, MongoDB), containerized with Docker and Kubernetes, and deployed high-performance REST APIs with FastAPI. Enforced RBAC, integrated automated tests into CI/CD, and ensured secure, scalable deployments.

Senior Full-Stack Developer & Project Manager at Freelance

October 1, 2024 - Present

Delivered 15+ high-impact projects across SaaS, e-commerce, and real-time apps using React, Next.js, Node.js, and AWS, enhancing client user engagement and conversion rates by optimizing performance and UI/UX. Led the adoption of Agile methodologies (Scrum, Sprint Planning, Stand-ups) to ensure on-time delivery and alignment with business goals, while improving communication with clients. Built and deployed CI/CD pipelines using GitHub Actions, Docker, and AWS, reducing deployment times by 25% and enabling frequent, reliable releases. Applied server-side rendering (SSR) in React to optimize page load speeds and improve SEO.

Senior Full-Stack Developer at DynamasTech

March 1, 2022 - Present

Architected event-driven platforms using Kafka, Web Sockets, Python, and Node.js, reducing data latency from 15 minutes to under 1 second for real-time insights. Built multi-tenant systems on AWS (Lambda, ECS/EKS) with PostgreSQL; implemented RBAC and HIPAA-compliant access. Developed high-performance REST APIs with Python and Node.js, with real-time data synchronization across services. Deployed containerized workloads on AWS and implemented CI/CD pipelines to enable rapid, reliable releases. Implemented SSR/CSR optimizations to improve SEO and page performance.

Full-Stack Developer at Rack Solutions LLC

December 1, 2021 - October 9, 2025

Rebuilt legacy multi-tenant CMS for health care clients with Next.js, Node.js, AWS ECS and CloudFront, cutting page load times from tens of seconds to 2 seconds and boosting retention. Automated data migration with Python ETL scripts, reducing manual effort by 70% and improving system reliability. Implemented secure access with JWT authentication and RBAC, ensuring HIPAA-compliant user and data protection. Optimized relational PostgreSQL and unstructured MongoDB usage, improving query performance and scalability. Enhanced code quality with unit and integration tests using Mocha and Jest.

Full-Stack Developer at Black Ends

April 1, 2019 - October 9, 2025

Rebuilt legacy inventory system with React and Node.js, cutting sync time from 24 hours to 5 seconds and boosting responsiveness. Integrated Redis caching for real-time multi-channel inventory updates, improving data accuracy and reducing customer complaints by 40%. Developed unified REST API layer to connect sales, warehouse, and e-commerce databases, enabling seamless real-time stock synchronization. Integrated third-party APIs (Shopify, WooCommerce) to automate stock updates and streamline order fulfilment.

Senior Full-Stack Developer & Project Manager at Freelance

October 1, 2024 - Present

Delivered 15+ high-impact projects across SaaS, e-commerce, and real-time applications using React, Next.js, Node.js, and AWS; improved client engagement and conversion rates by optimizing performance and UI/UX.

Senior Full-Stack Developer at Dynamastech LLC

March 1, 2022 - Present

Architected event-driven platforms using Kafka, WebSockets, Python, and Node.js; built multi-tenant RBAC-enabled systems on AWS with PostgreSQL and Redis; implemented secure access with JWT authentication and RBAC; improved real-time data synchronization and reliability.

Full-Stack Developer at Rack Solutions LLC

December 1, 2021 - October 22, 2025

Rebuilt multi-tenant CMS for healthcare clients using Next.js and Node.js on AWS ECS; automated data migrations; implemented RESTful APIs and GraphQL; improved page load times and overall system performance.

Full-Stack Developer at Black Ends

April 1, 2019 - October 22, 2025

Rebuilt legacy inventory system with React and Node.js; integrated Redis caching for real-time multi-channel updates; unified REST API layer and onboarded third-party data sources for seamless integrations.

Senior Full-Stack Developer & Project Manager at Freelance

October 1, 2024 - November 4, 2025

Led end-to-end delivery of SaaS and real-time applications using React, Next.js, Node.js, and AWS. Implemented Agile workflows (Scrum, Sprint Planning, Standups) to align with business goals. Built and deployed CI/CD pipelines using GitHub Actions, Docker, and AWS, enabling frequent, reliable releases. Implemented server-side rendering optimizations and integrated GraphQL to enable flexible data access across services. Optimized real-time data flows with WebSockets and Kafka, improving user experience and data freshness.

Senior Full-Stack Developer at DynamasTech

March 1, 2022 - November 4, 2025

Architected event-driven platforms using Kafka, WebSockets, Python, and Node.js; reduced data latency from 15 minutes to under 1 second for real-time insights. Built multi-tenant RBAC-enabled systems on AWS (Lambda, ECS/EKS) with PostgreSQL, enabling scalable client onboarding. Developed high-performance RESTful and GraphQL APIs with Python (FastAPI) and Node.js (Express.js); implemented real-time data synchronization across clients via WebSockets and Kafka. Deployed CI/CD pipelines with GitHub Actions and Docker on AWS; containerized services with Kubernetes; improved test coverage with Jest and Cypress. Implemented security with JWT and RBAC.

Full-Stack Developer at Rack Solutions LLC

December 1, 2021 - December 1, 2021

Rebuilt multi-tenant CMS for healthcare and SaaS clients using Next.js, Node.js and AWS. Reduced page load times from tens of seconds to around 2 seconds and improved retention. Automated data migrations with Python ETL scripts, reducing manual effort by a large margin and increasing reliability. Implemented secure access with JWT and RBAC; exposed RESTful APIs and GraphQL; containerized services with Docker and orchestrated with Kubernetes for scalable deployments.

Full-Stack Developer at Black Ends

April 1, 2019 - April 1, 2019

Rebuilt legacy inventory system with React and Node.js, reducing data sync times and improving responsiveness. Integrated Redis caching for real-time multi-channel inventory updates; developed a unified REST API; connected with third-party e-commerce APIs to streamline stock and ordering workflows.

Senior Full-Stack Developer at Rack Solutions LLC

May 2, 2019 - December 2, 2021

Rebuilt multi-tenant CMS for healthcare clients using Next.js, Node.js, AWS ECS, and CloudFront, reducing page load times from seconds to sub-2s and boosting retention. Automated data migrations with Python ETL scripts, cutting manual effort by 70% and improving system reliability. Implemented secure access with JWT/RBAC and RESTful/GraphQL APIs; integrated Shopify and WooCommerce APIs to automate stock and order fulfillment. Developed unified REST API layer to connect sales, warehouse, and e-commerce databases for real-time inventory synchronization.

Full-Stack Developer at Black Ends

July 1, 2017 - April 2, 2019

Rebuilt legacy inventory system with React and Node.js, cutting sync times from 24 hours to 5 seconds and boosting responsive UX. Integrated Redis caching for real-time multi-channel inventory updates, improving data accuracy and reducing customer complaints by 40%. Developed unified REST API layer to connect sales, warehouse, and e-commerce databases for real-time stock synchronization; integrated third-party APIs (Shopify, WooCommerce) to automate stock updates and streamline order fulfillment.