Senior Full-Stack Engineer with Cloud Expertise

Abdullah Hafeez

********.*****@*****.*** 845-***-**** New York, NY github.com/abdullahafeez007

linkedin.com/in/abdullah-hafiz-252899284/

Summary

Senior Full Stack Engineer with 8+ years of experience designing, developing, and deploying scalable web applications, cloud-native platforms, SaaS products, and AI-powered solutions. Expertise in React, Next.js, TypeScript, Node.js, FastAPI, PostgreSQL, AWS, Google Cloud Platform, Docker, Kubernetes, and modern distributed architectures. Proven experience building enterprise applications, microservices, cloud infrastructure, CI/ CD pipelines, and AI-driven solutions leveraging LLMs, RAG systems, and intelligent automation. Strong background in cloud development, software architecture, system design, DevOps practices, and technical leadership Technical Skills

Programming Language

Java, JavaScript (ES6+), TypeScript, C#, Python

Backend Development

Node.js, NestJS, Express.js, Spring Boot, ASP.NET Core, RESTful APIs, GraphQL, Microservices Architecture, JWT, OAuth2

Databases

MySQL, PostgreSQL, SQL Server, MongoDB, Redis,

Cassandra, Database Design, Query Optimization, ORM

(Sequelize, Prisma, Hibernate, Entity Framework)

Messaging & Distributed Systems

Apache Kafka, RabbitMQ, Event-Driven Architecture, Distributed Systems

Architecture & Leadership

Distributed Systems, Microservices, Event-Driven

Architecture (Kafka, RabbitMQ), Scalability, Load

Balancing, Caching Strategies, High-Level & Low-Level Design

Frontend Development

React.js, Next.js, Angular, TypeScript, JavaScript (ES6+), HTML5, CSS3, SASS, Redux, Redux Toolkit, Material UI, Tailwind CSS, Responsive Web Design, Performance

Optimization

Cloud Development & DevOps

AWS (EC2, S3, Lambda, RDS, API Gateway), Azure,

Docker, Kubernetes, CI/CD (Jenkins, GitHub Actions), Terraform, CloudFormation, Monitoring (Prometheus, Grafana, ELK)

AI & Machine Learning

OpenAI API, Claude, Gemini, LangChain, LangGraph,

LlamaIndex, AI Agents, MCP, Prompt Engineering,

Retrieval-Augmented Generation (RAG), Pinecone,

Weaviate, Hugging Face

Testing & Quality Assurance

JUnit, Jest, Selenium, Cypress, Postman, Git, GitHub, GitLab, Agile/Scrum, Jira

Security:

OWASP Standards, Secure API Design, Authentication & Authorization, Data Encryption, Rate Limiting

Experience

Senior Full Stack Engineer, Istream Solution 2023 – Present

•Architect and develop AI-powered SaaS applications using React, Next.js, TypeScript, Node.js, FastAPI, PostgreSQL, and cloud-native technologies.

•Design scalable microservices architectures focused on reliability, maintainability, and performance.

•Build AI-powered workflows utilizing OpenAI, Claude, LangChain, vector databases, and Retrieval Augmented Generation (RAG).

•Develop responsive frontend applications using React, Next.js, Tailwind CSS, and modern state management solutions.

•Design secure RESTful APIs and GraphQL services with OAuth2, JWT authentication, and Role-Based Access Control.

•Optimize PostgreSQL, MongoDB, and Redis workloads through indexing, query optimization, and caching strategies.

•Implement CI/CD pipelines using GitHub Actions, Docker, Kubernetes, and Terraform.

•Lead architecture reviews, mentor junior engineers, and contribute to engineering best practices. Full Stack Engineer, Lingobirds 2021 – 2023

•Developed enterprise-scale web applications using React, Next.js, TypeScript, Python, and Google Cloud Platform.

•Built scalable backend services supporting distributed systems and high-availability environments.

•Designed and implemented microservices using Node.js, FastAPI, Java, and event-driven architecture patterns.

•Improved frontend performance through server-side rendering, code splitting, lazy loading, and application optimization.

•Developed intelligent automation and AI-assisted tools utilizing semantic search and machine learning capabilities.

•Led cloud modernization initiatives using Kubernetes, Terraform, and Infrastructure as Code practices.

•Built automated CI/CD pipelines and testing frameworks improving deployment efficiency and software quality.

•Participated in architecture discussions focused on scalability, reliability, observability, and operational excellence. Software Engineer, ECFMG 2018 – 2021

•Developed full-stack enterprise applications using React, Node.js, Python, PostgreSQL, Redis, and AWS.

•Designed and maintained RESTful APIs supporting business-critical operations.

•Implemented authentication and authorization solutions using OAuth2, JWT, and RBAC.

•Built reporting systems, dashboards, and administrative tools improving operational visibility and workflow efficiency.

•Enhanced application performance through database optimization, Redis caching, and backend performance tuning.

•Developed automated testing suites and CI/CD workflows to improve software quality and deployment reliability.

•Supported cloud migration initiatives and modernization of legacy applications.

•Collaborated with stakeholders throughout the software development lifecycle. Projects

AI SaaS Automation Platform,

Tech Stack: Next.js, TypeScript, FastAPI, PostgreSQL, OpenAI, LangChain, AWS

•Developed an AI-powered SaaS platform enabling intelligent workflow automation and document processing.

•Integrated LLM-powered assistants, semantic search, and Retrieval-Augmented Generation (RAG) capabilities.

•Designed scalable backend architecture and secure authentication systems.

•Implemented analytics dashboards, API integrations, and subscription management features. Enterprise Project Management System, Tech Stack: React, Node.js, PostgreSQL, Redis, Docker

•Built a full-stack project management platform supporting task tracking, team collaboration, and reporting.

•Developed real-time notifications, role-based permissions, and dashboard analytics.

•Designed scalable REST APIs and optimized database performance.

•Implemented CI/CD workflows and containerized deployment infrastructure. AI Agent Workflow Platform,

Tech Stack: Next.js, FastAPI, LangGraph, OpenAI, Pinecone, Kubernetes

•Built AI agents capable of executing multi-step business workflows and automation pipelines.

•Integrated vector databases, semantic retrieval systems, and intelligent task execution capabilities.

•Developed document ingestion and knowledge management systems for enterprise environments.

•Deployed scalable cloud-native infrastructure using Kubernetes and containerized services. Education

Bachelor of Science in Computer Science, University Name 2016

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