Full Stack Engineer

Good Morning, Zeya Karim

Full Stack Engineer & Full Stack Architect — Driving Zero-to-One growth through omni-channel e-commerce ecosystems (D2C, B2B, B2C) and high-performance logistics tech.

Role

Full Stack Engineer

Verticals

D2C, B2B, B2C

Experience

4+ Years

Core Infrastructure

React.js

Node.js

TypeScript

PostgreSQL

Cloudflare R2

Hostinger VPS

Base

Remote

Scaling Worldwide

Engagement

Building Sappey

Heritage meets Luxury

About Me

Who I Am

Full Stack Engineer

Full Stack Engineer & Technical Leader with 4+ years of experience building zero-to-one products. I specialize in scalable multi-tenant SaaS platforms, e-commerce ecosystems, logistics, warehouse management, real estate platforms, and B2B, B2C & D2C solutions.

What I Do

Zero-to-One Products

Architect and deliver production-grade SaaS, e-commerce, logistics, warehouse management, and real estate platforms. I specialize in scalable React & Node.js applications, microservices, cloud infrastructure, third-party integrations, and end-to-end product development.

My Focus

Luxury D2C/B2B

System architecture, premium UX engineering, and performance optimization. I bridge the gap between business strategy and high-fidelity technical execution for global brands.

My Passion

Zero-to-One

Building production-grade systems from scratch, automating developer workflows, and delivering 'Zero-Glitch' user experiences that scale under real-world load.

Core Expertise

Multi-tenant Logistics Systems90%
Event-driven Architectures (RabbitMQ, Socket.io)88%
Real-time Systems & Driver Tracking86%
API Design & Performance88%
Database Design & Optimization (Postgres, MongoDB)85%
Cloud Deployment & CI/CD (AWS, Cloudflare R2)82%
Developer Tooling & Automation (CLI, Puppeteer)80%

Work Experience

Full Stack Engineer (Part Time)

Sappey Foods PVT. LTD.

MAR 2026 - PRESENT

Sappey is an omni-channel luxury brand delivering premium dry fruits and nuts through integrated D2C, B2C, and B2B tech ecosystems.

Architected the Zero-to-One technical strategy for a multi-channel ecosystem supporting D2C, B2C, and high-volume B2B operations using React.js and TypeScript.

Engineered a luxury-tier UI/UX with custom Framer Motion animations and glassmorphism effects to maintain premium brand positioning across customer segments.

Orchestrated a cost-effective, scalable infrastructure using Hostinger VPS for application hosting and Cloudflare R2 for S3-compatible object storage.

Designed specialized media handling logic and lazy-loading strategies to deliver high-fidelity 4K video assets without compromising performance.

Integrated secure RESTful APIs with Node.js and PostgreSQL, utilizing Zod for robust schema validation and end-to-end type safety.

React.jsTypeScriptNode.jsPostgreSQLTailwind CSSFramer MotionTanStack QueryCloudflare R2Hostinger VPSZod

Senior Full Stack Engineer

GWARM Technologies PVT LTD

APR 2025 - MAR 2026

GWARM Technologies Pvt. Ltd., building logistics and e-commerce platforms with cloud-native architectures and real-time systems.

Architected a multi-tenant logistics platform (Fulfillment, Last Mile, Dark Store) from scratch.

Engineered an automated dispatch engine for Dark Stores using distance-based algorithms to assign shipments to nearest drivers.

Designed asynchronous bulk-order processing pipelines using RabbitMQ and Cloudflare R2 with real-time status updates via Socket.io.

Built a custom CLI scaffolding tool for the internal monorepo to automate CRUD API and component generation, increasing developer velocity by ~20%.

Integrated Google Maps API for real-time driver tracking, polyline routing, and automated Cash-on-Delivery wallet reconciliation.

Implemented automated SLA and document generation using Puppeteer and Handlebars in background worker pipelines.

Next.jsReact.jsNode.jsExpress.jsTypeScriptPostgreSQLPrisma/SequelizeSocket.ioRabbitMQCloudflare R2PuppeteerHandlebarsGoogle Maps API

Full Stack Developer

DEPO24

SEP 2022 - FEB 2025

DEPO24 is a platform for architects, designers and homeowners to procure home building products with optimized digital workflows.

Developed scalable e-commerce applications tailored for architects and builders, increasing user engagement by ~35%.

Built and optimized RESTful APIs; improved backend response times by ~30% through query optimization and caching strategies.

Automated CI/CD workflows using GitHub Actions and managed AWS deployments to achieve stable 99.9% uptime.

Next.jsReact.jsNode.jsExpress.jsMongoDBPostgreSQLSocket.ioMongooseAWSGitHub Actions

Teaching Assistant

Coding Ninjas

FEB 2022 - SEP 2022

Coding Ninjas is an online education company focused on practical coding training and mentorship.

Mentored 400+ students in Full Stack Development and optimized 100+ projects for modularity and performance.

Assisted in live sessions, code reviews, and debugging exercises to improve student outcomes.

React.jsNode.jsExpress.jsMongoDBJavaScriptMongoose

Tech Stack

React.js

React.js

Next.js

Next.js

TypeScript

TypeScript

Tailwind CSS

Tailwind CSS

TanStack Query

TanStack Query

Redux

Redux

Node.js

Node.js

Express.js

Express.js

Socket.io

Socket.io

RabbitMQ

RabbitMQ

Zod

Zod

PostgreSQL

PostgreSQL

MongoDB

MongoDB

Prisma

Prisma

Sequelize

Sequelize

Redis

Redis

AWS (S3, EC2, RDS)

AWS (S3, EC2, RDS)

Cloudflare R2

Cloudflare R2

Docker

Docker

GitHub Actions

GitHub Actions

Puppeteer

Puppeteer

Handlebars

Handlebars

Google Maps API

Google Maps API

Jest

Jest

JIRA

JIRA

OAuth

OAuth

Featured Projects

Restaurant Website Platform screenshot preview 1

Restaurant Website Platform

Premium restaurant website built with React, TypeScript, and Vite. Features animated user experiences, menu browsing, reservation flows, responsive design, and scalable frontend architecture prepared for future backend integration.

Premium UI

design

Scalable

architecture

React.jsTypeScriptReact RouterTanStack QueryReact Hook FormZodTailwind CSSFramer Motion
Real Estate Management Platform screenshot preview 1

Real Estate Management Platform

Production-ready full-stack real estate platform consisting of a customer-facing property website and a comprehensive admin dashboard. Enables complete management of properties, agents, customer inquiries, and website content through a centralized administration system.

Admin Managed

properties

Centralized

leads

React.jsTypeScriptNode.jsExpress.jsPostgreSQLSequelizeJWT AuthTailwind CSSTanStack Query
Sappey E-Commerce Platform screenshot preview 1

Sappey E-Commerce Platform

End-to-end luxury e-commerce platform with a custom admin portal, Razorpay payment integration, Delhivery shipping, and Cloudflare R2 media storage. Built the entire stack solo from concept to production.

30% Faster

checkout

5+ Services

integrations

React.jsTypeScriptNode.jsPostgreSQLSequelizeRedisRazorpayCloudflare R2
GWARM Logistics Platform screenshot preview 1

GWARM Logistics Platform

Scaled logistics platform supporting Fulfillment Centers, Last-Mile Delivery, and Dark Store operations with multi-tenant architecture, RabbitMQ dispatch workflows, real-time tracking, and AWS infrastructure.

100+

vehicles

5+ FCs

centers

Node.jsTypeScriptPostgreSQLRabbitMQRedisAWS ECSAWS ECRGoogle Maps API
DEPO24 B2B Platform screenshot preview 1

DEPO24 B2B Platform

B2B e-commerce and franchise management platform for building materials featuring a custom storefront, centralized admin portal, Vinculum inventory synchronization, and multi-tenant franchise architecture.

Real-time Sync

inventory

Multi-Tenant

franchise

React.jsNode.jsPostgreSQLMongoDBGraphQLShopify APIVinculum

Looking to see engineering deep-dives or open-source tools?

View Archive Repository

Get In Touch

Let's Connect

Senior Software Engineer — available for mentoring, consulting, and collaboration. Need help with architecture, performance, hiring, or technical leadership? Reach out below.