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Abdul Haq Khalid

Associate Software Engineer | Full-Stack Developer | DevOps & Data Engineering Enthusiast

Based in: Lahore, PakistanMost recently: Full-Stack Developer, HobbylandExperience: 1 year

Associate Software Engineer and MERN Stack Developer with 1+ years of professional and internship experience. Hands-on experience with React, Next.js, Node.js, FastAPI, and Laravel, including real-time systems and automated CI/CD delivery. Skilled in DevOps and cloud infrastructure (Docker, Kubernetes, Terraform, GitOps) and distributed data pipelines (Apache Spark, Kafka, Airflow).

Experience

Full-Stack Developer

HobbylandLahore, PakistanworkOct 2025 – 2026

Summary

Developed a real-time text-chat microservice supporting 100+ concurrent connections using Node.js and WebSockets, cutting message delivery latency to under 100 ms via persistent connections and event-driven handling. Built gig and course discovery/registration workflows in Next.js and Node.js, supporting 20+ searchable, registrable offerings across online, in-person, and hybrid formats.

Results

Developed real-time text-chat functionality supporting 100+ concurrent connections using Node.js, WebSockets, and microservices architecture.
Reduced message delivery latency to under 100 ms for real-time conversations by implementing persistent WebSocket connections and event-driven message handling.
Implemented gig and course discovery and registration workflows using Next.js (React), Node.js, and microservices, supporting 20+ searchable and registrable offerings.
Streamlined course and gig registration workflows by ~30% by integrating registration, availability, and user enrollment operations.

Node.jsWebSocketsNext.jsMicroservices

Full-Stack Developer Intern

Nexus BerryLahore, PakistaninternshipMay 2025 – Sep 2025

Summary

Reduced P95 API latency by ∼35% for frequently accessed resources on enests.co by optimizing PostgreSQL queries and implementing Redis caching to cut redundant database operations. Cut synchronous API processing time by ∼40% for background operations by building RabbitMQ-based asynchronous workflows, decoupling long-running tasks from user-facing requests.

Results

Developed and optimized ~7 full-stack features for enests.co using Next.js, React, Payload CMS, and PostgreSQL.
Reduced P95 API latency by ~35% for frequently accessed resources by optimizing PostgreSQL queries and Redis caching.
Reduced synchronous API processing time by ~40% for background operations by implementing RabbitMQ-based asynchronous workflows.
Improved automated test coverage across 10+ components and API modules using Vitest, reducing regression issues by ~25%.