(March 2025 - Present)
Web Instructor
Programming Hero
ABOUT ME
Who I am?
Hi, I’m Bayajid Alam Joyel, a full-stack developer and cloud enthusiast with hands-on experience in Next.js, React, Node.js, NestJS, Express, PostgreSQL, MongoDB, and Redis. I’ve built scalable, cloud-native applications like VisionSync, an AWS video streaming system. I’m passionate about system design, performance optimization, and DevOps automation, and I enjoy solving complex problems while staying up-to-date with emerging technologies. I’m looking for opportunities that leverage my expertise in full-stack development, distributed systems, and cloud-driven solutions.
Experiences
(December 2023 - January 2025)
Full Stack Developer
Pii Marketer
August 2024 - Present
Backend Co-Lead(Volunteer)
Uddhar
Skills
Language
C
C++
TypeScript
Cloud, DevOps & Testing
AWS
Docker
Kubernetes
Nginx
CI/CD
Pulumi
Ansible
Prometheus
Grafana
Backend Techs
Node JS
Express JS
GraphQL
RabbitMQ
Database And ORM
MongoDB
PostgreSQL
Redis
Mongoose
Prisma
Frontend Techs
React
Next JS
Redux
Tailwind
ShadcnUI
Ant Design
Firebase
Others
Git
Figma
VS CODE
Postman
Linux
PROJECTS
node-fleet - Intelligent K3s Autoscaler
constproject={name:'node-fleet - Intelligent K3s Autoscaler',tools: ['AWS Lambda', 'K3s', 'Kubernetes', 'Prometheus', 'Python', 'Pulumi', 'AWS EC2', 'Spot Instances', 'EventBridge],myRole:Backend & DevOps Engineer,Description: I built a cost-optimized, serverless autoscaler for K3s clusters on AWS. It automatically adjusts cluster capacity based on real-time metrics from Prometheus, using AWS Lambda for event-driven scaling. By leveraging Spot instances, Multi-AZ support, and predictive scaling, the system reduces infrastructure costs by 40-50%, ensures <3 min response for new capacity, and eliminates manual intervention during traffic spikes. VPC isolation enhances security, and the architecture is lightweight and fully automated.,};Jatra – Scalable Railway Ticketing System
constproject={name:'Jatra – Scalable Railway Ticketing System',tools: ['TypeScript', 'NestJS', 'Go (API Gateway)', 'Next.js', 'PostgreSQL', 'Redis', 'RabbitMQ', 'Kubernetes', 'Helm', 'Docker', 'Prometheus', 'Grafana', 'OpenTelemetry', 'Pulumi', 'Jenkins],myRole:Full Stack & DevOps Engineer,Description: Jatra is a fault‑tolerant, horizontally scalable microservices‑based ticketing platform designed to solve Bangladesh Railway’s peak traffic failures (like during Eid). Built during a BUET CSE Hackathon, it features 11 independent services (auth, booking, payment, etc.), Redis atomic seat locking for high concurrency, Kubernetes auto‑scaling, hybrid sync/async communication (API Gateway + RabbitMQ), and comprehensive monitoring with Prometheus, Grafana, and OpenTelemetry. It’s engineered for reliability, zero downtime deployments, and real‑world traffic challenges.,};Askly – Intelligent RAG & Web Search Agent
constproject={name:'Askly – Intelligent RAG & Web Search Agent',tools: ['React', 'TypeScript', 'Tailwind CSS', 'shadcn/ui', 'Node.js', 'Express', 'ChromaDB', 'Google Gemini', 'Tavily API', 'Server‑Sent Events (SSE)],myRole:Full Stack Developer,Description: Askly is a high‑performance open‑source Retrieval‑Augmented Generation (RAG) system that lets you chat with your documents (like PDFs) and falls back to web search when it doesn’t have the answer locally. It supports real‑time AI answer streaming via SSE and rich markdown rendering for a smooth conversational experience. Built with Google Gemini, ChromaDB, and Tavily web search, Askly lets you index document content, run semantic queries, and stream detailed AI responses back to the UI. :contentReference[oaicite:0]{index=0},};VisionSync - Video Streaming Platform
constproject={name:'VisionSync - Video Streaming Platform',tools: ['React', 'TypeScript', 'Tailwind CSS', 'shadcn/ui', 'Node.js', 'Express', 'MongoDB', 'Socket.IO', 'AWS S3', 'AWS ECS', 'AWS Lambda', 'AWS SQS', 'CloudFront', 'Redis', 'FFmpeg', 'Pulumi],myRole:Full Stack Developer,Description: I built a scalable video streaming platform with real-time processing updates. Users upload videos via pre-signed URLs directly to S3, triggering automated ECS containers that compress videos, convert to multiple resolutions (1080p, 720p, 480p), split into 10-second chunks, and generate MPEG-DASH manifests. The platform delivers content through CloudFront CDN with signed URLs for security. Real-time upload and processing status updates are handled via Socket.IO with Redis as the backplane. The entire infrastructure is provisioned with Pulumi on AWS, achieving 48% cost reduction through optimizations like S3 Intelligent Tiering, lifecycle policies, and Spot instances for ECS tasks.,};SimplyDone To-Do Application
constproject={name:'SimplyDone To-Do Application',tools: ['React.js', 'Tailwind CSS', 'Shadcn UI', 'Firebase', 'Node.js', 'Express', 'TypeScript', 'Docker', 'Docker Hub', 'AWS EC2', 'AWS ALB', 'AWS Auto Scaling', 'AWS VPC', 'AWS CloudWatch', 'AWS NAT Gateway', 'MongoDB', 'Pulumi', 'Ansible', 'JWT],myRole:Full Stack DevOps Engineer,Description: SimplyDone is an enterprise-grade, cloud-native To-Do application built with React.js (with Tailwind CSS, Shadcn UI, Firebase authentication) and Node.js/Express backend. The application implements JWT-based authentication and uses MongoDB for data persistence. The architecture features Docker containerization with images hosted on Docker Hub, automated AWS infrastructure provisioning via Pulumi (IaC), and deployment orchestration through Ansible. The backend is deployed across multiple AWS EC2 instances within private subnets using an Auto Scaling Group (min: 1, desired: 2, max: 5) with CloudWatch-based CPU metrics triggering scale-up/down policies. An Application Load Balancer distributes traffic with health checks, while the frontend runs on a dedicated EC2 instance in a public subnet. The infrastructure includes VPC with public/private subnets across multiple AZs, NAT Gateway for outbound traffic, and a dedicated MongoDB instance in a private subnet. Security is enforced through AWS Security Groups with least-privilege access patterns.,};Educations
2021 - 2025
Bachelor in Computer Science And Engineering
CCN University of Science & Technology
2018 - 2020
Higher Secondary Certificate
Government Shaheed Suhrawardy College
2016 - 2018
Secondary School Certificate
Bangodda Iqra Model School