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Syed Zain
@iamsyedzain
Full Stack Architect React Node NestJS SaaS Expert
Pakistan
Inglese
Chi sono
Senior Full Stack Architect with 8+ years of experience building scalable SaaS platforms, ERP systems, and distributed microservices. I specialize in React, Node.js, NestJS, and PostgreSQL, delivering clean, maintainable, high-performance applications. Experienced in AWS, GCP, AI integrations, and multi-tenant architectures. I take end-to-end ownership from backend system design to frontend implementation, ensuring secure and production-ready solutions.
Competenze
Syed Zain
offline •
Consulta i miei servizi
Applicazioni web full stack
I will build scalable full stack saas app using react and nestjs
Portfolio
Esperienza lavorativa
EcoBE – Multi-Tenant ERP Platform (Waste & Recycling Industry)
Sprinting Softwares, Denmark (Remote from Pakistan) • Full time
Dec 2025 - Present • 5 mos
Designed and maintained a scalable multi-tenant ERP platform for the waste and recycling industry using NestJS, TypeScript, Prisma, and PostgreSQL. Led development of finance modules including dynamic invoice PDF generation, tenant-specific billing logic, and configurable payment terms. Implemented Domain-Driven Design patterns, role-based access control, and secure AWS S3 document storage. Contributed to React-based admin dashboards and ensured seamless API integration. Focused on clean architecture, performance optimization, and production-grade scalability.
Funds Management Microservices
HeuristicSol PVT LTD • Full time
May 2022 - Nov 2025 • 3 yrs 6 mos
Led the transformation of a legacy monolithic Funds Management System into a distributed microservices architecture using Node.js (Express), Golang services, MySQL, Redis, and Google Cloud Platform. Designed and implemented core services including Document Service, Screening Service, and Reporting Service using repository pattern and RESTful APIs. Integrated third-party compliance providers such as World Check, Google Custom Search, and Dow Jones to automate due diligence workflows. Optimized database queries, implemented Redis caching, and deployed region-aware services to improve performance under high loads. Automated compliance and document workflows using Cloud Functions and Scheduler, reducing manual intervention and significantly improving onboarding speed and reporting accuracy.
Job Portal (The Gradient Group USA)
Qult Technologies, USA (Remote) • Freelance
Oct 2023 - Dec 2024 • 1 yr 2 mos
Led backend development of an AI-powered job portal platform using Node.js and MongoDB. Designed secure RESTful APIs with JWT-based authentication and role-based access control for recruiters and candidates. Implemented AI-driven features including Resume Builder, Resume Parsing, Resume Ranking, and Interview workflow integrations powered by large language models. Built scalable recruiter and candidate management modules with optimized database queries and modular service architecture. Focused on clean backend design, performance, and seamless frontend integration to deliver a production-ready, intelligent recruitment platform.
