Hi, I'm Robiul Hossain

Software Engineer · Backend & Cloud Systems

Focused on scalable, secure, and high-performance backend systems, distributed architectures, and cloud automation.

Schedule Call

2+ YOE

Production Eng

15+

Shipped Apps

Full-Cycle

Concept to Prod

robiul@arch-node: ~

system: healthy

$ cat engineer.json

{
  "name": "Robiul Hossain",
  "role": "Software Engineer",
  "focus": "Scalable, secure & high-performance systems",
  "core_stack": {
    "languages": ["TypeScript", "JavaScript", "SQL", "Python"],
    "backend": ["Node.js", "NestJS", "Express.js", "FastAPI"],
    "databases": ["PostgreSQL", "MongoDB", "Redis", "ElasticSearch"],
    "devops_cloud": ["AWS", "Docker", "Kubernetes", "Terraform", "CI/CD"],
    "frontend": ["React", "Next.js", "React Native", "Tailwind CSS"]
  },
  "company": "Elementix Software Ventures LLC",
  "location": "Remote / Worldwide"
}

Ready for production impact2+ YOE

Engineering Services & Capabilities

How I Deliver Value

Full-cycle ownership across backend architecture, modern client apps, automated deployment, and spec-driven AI.

Backend Engineering & Architecture

High-throughput REST and GraphQL APIs, PostgreSQL schema design, Redis caching, and resilient architectures with zero data loss.

Node.jsNestJSPostgreSQLRedisFastAPITypeScript

Frontend & Mobile Engineering

Polished, accessible web and mobile apps using React, Next.js, and React Native with smooth UX, 60fps animations, and high conversion.

ReactNext.jsReact NativeExpoTypeScriptTailwind CSS

DevOps, Release & Automation

Automated CI/CD via GitHub Actions, Docker containerization, Playwright testing, and zero-downtime releases on AWS and Cloudflare.

DockerCI/CDAWSCloudflareLinuxPlaywright

AI Engineering & Spec-Driven Workflows

Fast-paced feature delivery using spec-driven AI agent workflows, practical LLM feature integration, and production RAG pipelines.

Spec-Driven AgentsLLM APIsRAG PipelinesPythonVector SearchAutomation

Full-Cycle Ownership: Architecture, backend, client UI, and deployment

Backend Depth: High-throughput APIs, clean schemas, and zero data loss

Spec-Driven Speed: AI agent workflows to ship quality code faster

Business-First Focus: Pragmatic decisions tied directly to product goals

Background & Philosophy

About Me

Engineering dependable backend systems, responsive client apps, and automated pipelines.

STATUSAvailable for Hire

FOCUSBackend · Full-Stack · DevOps · AI

TIMEZONEUTC+6 (Flexible Overlap)

Assalamu Alaikum! I'm Robiul Hossain, a software engineer partnering with teams to turn product visions into fast, dependable production systems.

My foundation is solid backend engineering: clean PostgreSQL schemas, high-throughput Node.js & NestJS services, and rock-solid data integrity. Across the full cycle, I pair robust APIs with polished React and React Native apps, CI/CD pipelines, automated testing, and spec-driven AI agent workflows to ship real business value.

LocationDhaka, Bangladesh (Remote Worldwide)

Experience2+ Years in Production Environments

Primary StackTypeScript, Node.js, PostgreSQL, React, Next.js

Current RoleSoftware Engineer at Elementix

Stack & Capabilities

Technical Arsenal

01Core Languages

TypeScript

JavaScript

Python

SQL

HTML5 / CSS3

02Backend Engineering & Systems

Node.js

NestJS

Express.js

FastAPI

REST & GraphQL

Hono

03Databases & Data Modeling

PostgreSQL

Redis

Drizzle ORM

MongoDB

Cloudflare KV

04Modern Frontend & Mobile UI

React

Next.js

React Native

Remix

Tailwind CSS

05DevOps, Releases & Testing

Docker

CI/CD & Actions

AWS

Cloudflare

Terraform

Playwright & Jest

06AI Engineering & Agent Workflows

Spec-Driven Agents

LLM Integrations

Vector Search & RAG

Prompt Engineering

System Design

Architecture Patterns & Methodologies

Production-proven patterns

Spec-Driven DevelopmentAI Agent WorkflowsBackend System ArchitectureKubernetes & DockerTerraform & TerragruntNginx & Reverse ProxiesRelational Schema DesignREST & GraphQL APIsCI/CD Pipeline AutomationZero-Downtime ReleasesAutomated E2E TestingReact Native & ExpoRedis Caching & QueuesMicroservicesLinux Server AdministrationTurborepo MonoreposAgile Sprint Delivery

Career Trajectory & Impact

Work Experience

Junior Software Engineer

Dec 2025 - Present

Elementix Software Ventures LLC

•Architected responsive web applications using Next.js and Tailwind CSS, improving interaction fluidity and Core Web Vitals.
•Delivered client-facing production systems including GRE Quant School LMS (interactive drills & student analytics) and Naza Noor (DTC e-commerce storefront).
•Designed and maintained type-safe RESTful microservices and backend endpoints using TypeScript, Express.js, NestJS, and PostgreSQL.
•Authored comprehensive automated test suites using Jest and Playwright to guarantee regression-free production releases.
•Orchestrated cloud infrastructure automation and continuous deployment pipelines utilizing AWS, Docker, Terraform, and GitHub Actions.

Next.jsTypeScriptNestJSPostgreSQLAWSDockerTerraformPlaywright

Junior Software Engineer

Apr 2024 - Apr 2025

OctopusX

•Engineered scalable web client interfaces and centralized state management systems utilizing React, Next.js, and Redux Toolkit.
•Built performant backend APIs with TypeScript, Express.js, and MongoDB, optimizing database queries for high transaction volumes.
•Configured and managed Linux production VPS instances with Docker containers, Nginx reverse proxies, and automated SSL.
•Implemented CI/CD pipelines via GitHub Actions and worked cross-functionally with designers to deliver creator economy products.

ReactReduxTypeScriptExpress.jsMongoDBDockerNginxLinux

Software Engineering Intern

Jan 2024 - Mar 2024

OctopusX

•Developed full-stack web features across the MERN stack in close collaboration with senior engineering leads.
•Participated in daily agile standups, peer code reviews, and Git feature-branch workflows to uphold code quality.

ReactNode.jsExpressMongoDBGitAgile

Engineered Works & Case Studies

Featured Projects

Production systems, APIs, and client applications built with strict type safety, automated tests, and scalable architectures.

E-commerce Microservice Architecture

In Active Development

Distributed event-driven microservices for high-volume e-commerce. Features an API Gateway (Kong), asynchronous message queues via RabbitMQ, distributed Redis caching, and centralized Keycloak authentication.

Node.jsTypeScriptDockerExpress.jsRabbitMQRedisKong API GatewayKeycloakMicroservices

Source Code

School Management APIs

Shipped & Tested

Enterprise educational administration API built with Node.js, NestJS, TypeScript, Drizzle ORM, and PostgreSQL. Features granular RBAC, student enrollment, course scheduling, Docker containerization, and interactive Swagger documentation.

NestJSTypeScriptPostgreSQLDrizzle ORMDockerSwaggerJWTRBACVercel

Source Code Live Demo

GraphQL Apollo Server POC

Shipped & Tested

High-performance GraphQL server engineered with TypeScript and Apollo Server. Demonstrates modular schema design, optimized relational resolvers, and CRUD operations across interconnected entities.

TypeScriptGraphQLApollo ServerNode.jspnpmtsx

Source Code

Socket Programming Protocols

Shipped & Tested

Real-time bidirectional networking demonstrations in Node.js. Explores WebSocket connections, Socket.io clustering, raw TCP/IP sockets, and UDP transmission with performance benchmarking.

JavaScriptNode.jsWebSocketsSocket.ioTCP/IPUDP

Source Code

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Articles & Architecture Notes