Senior FullStack Developer

Waleed Rajput

Tech Stack

Frontend

  • React.js
  • Next.js
  • Micro Frontend

UI

  • Tailwind
  • Material UI
  • Chakra UI
  • shadcn

Backend

  • Node.js
  • Express.js
  • NestJS
  • Python
  • Microservices
  • Redis
  • JWT

AI

  • OpenAI SDK
  • Claude SDK
  • ai-sdk
  • LangChain
  • Hugging Face
  • Transformers
  • Vector Embeddings

Mobile

  • React Native
  • Expo

Desktop

  • Electron.js

State Management

  • Redux Toolkit
  • Zustand
  • Jotai

API

  • React Query
  • RTK Query
  • Axios

Database

  • PostgreSQL
  • MySQL
  • MongoDB
  • CockroachDB

ORM / ODM

  • Sequelize
  • Prisma
  • Mongoose

Messaging

  • NATS
  • JetStream
  • RabbitMQ
  • Kafka

DevOps

  • Git
  • GitLab
  • Bitbucket
  • CI/CD
  • Docker
  • Kubernetes
  • GitHub Actions
  • TypeScript

Work Experience

Aug 2023 – Present

Senior Full Stack Developer

Pinnacle Enterprise, Karachi

  • Led development of a microservices-based ERP system for telecom resellers (B2B/B2C) with hierarchical company structures.
  • Built modular Next.js frontend and Nest.js backend with NATS for distributed communication.
  • Improved performance with Redis caching and CockroachDB for multi-region, fault-tolerant storage
  • Deployed Dockerized services on Kubernetes clusters for scalability and high availability. GitLab CI/CD pipelines for automated build, test, and deployment workflows.
  • Partnered with cross-functional teams to deliver ERP modules for subscriptions, billing, inventory, and reporting.
Next.jsNestJSNATSRedisCockroachDBKubernetesGitLab CI/CD

Jun 2023 – Aug 2023

Full Stack Developer

IT Verticals, Karachi

  • Contributed to a Shopify-style B2B+B2C e-commerce platform, implementing coupon, incentive, and rebate modules used by hundreds of merchants.
  • Designed a multi-level affiliate commission system (3-tier referral structure) using React.js frontend and Express.js/MongoDB backend.
  • Maintained code quality through structured pull request reviews and branch management on Bitbucket.
React.jsExpress.jsMongoDB

Aug 2022 – Jun 2023

Full Stack Developer

Bliss Textile Industries, Karachi

  • Planned and built a web-based accounting system from scratch using React.js, Express.js, and MySQL, handling financial transactions and reporting for 50+ internal users.
  • Designed modular API architecture ensuring system scalability as business operations expanded.
React.jsExpress.jsMySQL

Jul 2021 – Aug 2022

Full Stack Developer

Dev Extra Solutions, Hyderabad

  • Built a cross-platform food-ordering and social dining app using Expo (React Native) for Android and iOS.
  • Created a unique 'zone - based invite' feature — allowing users to invite nearby people to split bills — driving strong early user retention.
  • Developed real-time backend services with Node.js/Express.js and MongoDB supporting live order management.
React NativeExpoNode.jsMongoDB

Mar 2019 – Jul 2021

Associate Project Coordinator → Associate Manager

Oxiliry, Hyderabad

  • Coordinated delivery of software projects using Waterfall SDLC; managed daily crossfunctional standups with development, QA, and operations teams.
  • Promoted to Associate Manager within 10 months, taking on team leadership and aligning engineering output with business goals.
Project CoordinationWaterfall SDLC

Feb 2015 – Mar 2019

Full Stack Developer

Oxiliry, Hyderabad

  • Built a desktop surveillance application (Electron.js) to monitor customer traffic, employee activity, and rule violations — improving operational oversight for enterprise clients.
  • Contributed to both frontend UI and backend services over 4 years, building a strong foundation across the full stack.
Electron.js

Education

University of Sindh | 2017 - 2022

Bachelor of Science (BS) in Information Technology

Completed while working full-time

Projects

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Certifications

Github Graph

Blog

Writing on product engineering, architecture, and delivery systems.

Architecture

Designing a Multi-Tenant ERP with NestJS and NATS

How we structured domain boundaries, event contracts, and tenant-aware services to scale B2B/B2C telecom workflows.

Mar 18, 2026 • 8 min read

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Frontend

From Monolith to Modular Frontend in Next.js

A practical migration path to feature-based modules, shared UI contracts, and predictable ownership across teams.

Feb 9, 2026 • 6 min read

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Backend

Production Caching Strategy with Redis for High-Traffic APIs

Key invalidation patterns, cache key design, and operational guardrails we used to reduce latency under peak load.

Jan 22, 2026 • 7 min read

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DevOps

Kubernetes Delivery Pipeline: Build, Verify, Release

An end-to-end CI/CD flow with staged rollouts, smoke tests, and rollback checkpoints for safer enterprise deployments.

Dec 14, 2025 • 9 min read

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