Md Rezaul Karim

Senior Software Engineer (Full-stack • DevOps)

Software engineer with 5+ years across frontend, backend, and DevOps. I build scalable systems with TypeScript/Node.js, Kafka (exactly-once), cloud infrastructure (AWS/Azure), and AI features like RAG-based recommendations and chat.

your.email@example.com Dhaka, Bangladesh

Core Skills

Languages

TypeScript JavaScript Python PHP

Frontend

React Next.js Vue.js Svelte Redux

Backend

Node.js NestJS Express Serverless GraphQL WebSockets

Data & Messaging

PostgreSQL MySQL MongoDB Redis Kafka RabbitMQ

Search & AI

Elasticsearch Algolia Vector DBs RAG Systems Product Recommendations

Cloud & DevOps

AWS Azure Docker Kubernetes Terraform CI/CD

Experience

Software Engineer

2025 — Present

Product Team (cloud-native services)

Built and operated production services with clean CI/CD and reliability-focused practices.
Improved delivery speed by standardizing build/deploy workflows and developer tooling.

Full-stack Engineer

2022 — 2025

Event-driven architecture • Streaming & data pipelines

Implemented Kafka exactly-once processing patterns for failover-resilient data flows.
Developed RAG-driven recommendation/chat features integrated into product experiences.

Software Engineer

2020 — 2022

Client projects • Full-stack delivery

Delivered React + Node.js applications with scalable database design and APIs.
Handled deployments, monitoring, and iterative improvements based on real usage.

Selected Projects

Real-time Chat (SSE) on Cloud Run

Case Study

Node.js • Google Cloud Run • MongoDB Atlas

Designed client-specific messaging with auto-reconnect and scalable delivery.
Built for high concurrency with predictable server resource usage.

RAG Product Recommendations

Case Study

Retrieval • Embeddings • Search relevance

Implemented retrieval + ranking to generate grounded product suggestions.
Focused on latency, quality tradeoffs, and measurable evaluation metrics.