I build the systems that don't go down.

I'm a Software Engineer specializing in distributed backends, cloud infrastructure, and workflow automation. I've built event-driven platforms across automotive SaaS, AI ecosystems, and enterprise automation — working with teams at Shothik AI, WebBang UK, and Ai Tech Craft.

What I focus on:

• Backend & Distributed Systems — Spring Boot, Node.js, Kafka, RabbitMQ, gRPC
• Cloud & DevOps — AWS, GCP, Terraform, Docker, Kubernetes, Jenkins, GitHub Actions
• Data & Search — PostgreSQL, MongoDB, Elasticsearch, Redis, Pinecone, RAG
• Observability — Prometheus, Grafana, OpenTelemetry, Jaeger, ELK Stack
• Security & Auth — OAuth2, JWT
• Testing & Quality — JUnit 5, Testcontainers, SonarQube

Programming & Scripting Languages: C/C++, Java, JavaScript, SQL.

Backend & Frameworks: Spring Boot, Node.js, REST APIs, JWT, Oauth2, IAM, Websockets, Swagger/OpenAPI.

Databases: MySQL, PostgreSQL, MongoDB, Redis, Elasticsearch, Cassandra, Pinecone, BigQuery

Messaging & Distributed Systems: Apache Kafka, RabbitMQ, Apache Spark, Microservices, Distributed Systems, API Gateway, Config Server.

Cloud & DevOps: AWS, GCP, Docker, Kubernetes, Terraform, Jenkins, Github Actions, Linux, Nginx, Vercel, Hostinger.

Testing & Quality: JUnit5, Mockito, JMeter, SonarQube, TestContainers, Postman.

Monitoring & Observability: Prometheus, Grafana, Opentelemetry, Jaeger, Kibana, Logstash, Elasticsearch, New Relic.

SMS & Communication: Twilio, Nodemailer, SoftbartaSMS

Frontend Technologies: React.js, Next.js, Vue.js, Redux, Tailwind CSS, Material UI, Bootstrap, HTML5, CSS3, WordPress.

Automation & Scraping:

• RAG, N8N, Web Scraping, Data Extraction, Browser Automation, Task Automation, Headless Browsing, Beautiful Soup, Scrapy, Selenium (WebDriver), Playwright (Python, multi-browser automation), Pandas, PyAutoGUI, PyGetWindow, pywinauto

• Problem-solving, project tracking tools, WebSockets, Coinbase Commerce, Cron Jobs, Bug Hunting, SEO Optimization

Shothik AI | Jul,2025 - 2026

• • Built process automation pipelines using Selenium and Playwright for browser task automation
• • Developed marketing automation workflows using n8n
• • Designed backend microservices using Node.js
• • Used Docker, Google Cloud Platform (GCP), and Redis for deployment and caching

WebBang LTD (Full Stack Development) Jul 2024 – 2025

• • Developed backend features for automotive ECU tuning platform enabling secure car performance customization
• • Implemented SMS gateway integration, significantly reducing communication costs
• • Built secure file encryption and decryption pipelines for firmware handling
• • Worked on modular backend architecture including controllers, middleware, and MongoDB models

• MERN & Design & Scraping | Remote | December 2023 – June 2024
  • Collaborated on building an AI Tool Directory.
  • Built a Customized Dashboard for managing AI tools.
  • Improved React component performance by reducing render time by 35%.
  • Designed reusable component libraries, reducing future development time by 20%.
  • Developed a Web Scraper to extract specific data from targeted sources.

• MERN | United States | June 2021 – August 2022
  • Improved UX performance by optimizing React components, reducing render time by 35%.
  • Designed reusable component libraries, reducing future development time by 20%.

• MERN | Remote | February 2021 – August 2023
  • Worked on projects across 12+ countries through freelance platforms.
  • Gathered solid testimonials about project outcomes from clients.
  • Most projects were NFT & Blockchain-based.

• Web Development, SaaS, SMM Company | Dhaka, Bangladesh | December 2024 – Present
  • Launched and scaled a digital agency offering web development, social media marketing (SMM), and SaaS solutions tailored for local and international businesses.
  • Led client acquisition, business development, and project execution, securing high-conversion clients in niche markets.
  • Oversaw cross-functional teams to deliver conversion-optimized websites, paid ad campaigns, and growth-driven marketing strategies.
  • Built internal systems and processes to streamline service delivery using automation tools.

• Advertising & AI-Based Services Company | Las Vegas, NV, USA | March 2025 – Present
  • Launched and scaled a results-driven agency specializing in Meta (Facebook & Instagram) ads, AI automation, and sales funnel systems for service-based businesses.
  • Developed an "$100M Offer" framework to help clients attract and convert high-ticket customers.
  • Built a proprietary lead generation system leveraging cold outreach (DMs, email, SMS) and AI tools, generating 20–50 qualified leads weekly per client.
  • Systematized client acquisition, onboarding, and fulfillment using automations and virtual assistants.

• Technologies: React, TypeScript, ChatEngine.io
• Description: A fully functional full-stack chat application enabling real-time communication. Integrates with Chat Engine for backend services, including user authentication and message handling.
• Role & Contributions: Sole developer. Implemented frontend UI using React and TypeScript, and integrated Chat Engine API for authentication and messaging functionality.
• Features: Real-time chat, user authentication, responsive UI, production-optimized build.

Cloud Native E-Commerce Platform | Spring Boot, React, MySQL, Docker, Kubernetes, AWS

• • Developed RESTful APIs using Spring Boot and MySQL for product, order, and user management
• • Implemented JWT and OAuth2 authentication for secure API access
• • Containerized services with Docker and deployed applications on Kubernetes clusters
• • Built responsive frontend interfaces using React, Next.js, Tailwind CSS, HTML, and JavaScript
• • Automated deployments using Jenkins CI/CD pipelines and AWS infrastructure

Event-Driven Microservices System | Kafka, RabbitMQ, Redis, Spring Boot, Docker

• • Implemented asynchronous communication using Kafka and RabbitMQ to decouple services
• • Used Redis caching to reduce database load and improve response latency
• • Integrated API Gateway and Config Server for centralized routing and configuration management
• • Added WebSocket-based real-time notifications for live updates

Monitoring and Observability Stack | Prometheus, Grafana, ELK Stack, New Relic

• • Set up centralized logging using Elasticsearch, Logstash, and Kibana
• • Configured Prometheus and Grafana dashboards for application and infrastructure monitoring
• • Integrated New Relic for APM-style tracing and performance monitoring
• • Performed load and stress testing using JMeter

Infrastructure Automation Pipeline | Terraform, AWS, Jenkins, Nginx

• • Provisioned AWS infrastructure using Terraform for repeatable deployments
• • Configured Jenkins pipelines for automated build, test, and deployment workflows
• • Used Nginx as reverse proxy and load balancer with HTTPS/TLS configuration
• • Maintained code quality with SonarQube and Git/GitHub workflows

• Technologies: Node.js, Express, MongoDB, MERN Stack
• Description: A backend service for a full-stack ecommerce application built using the MERN stack. Supports core functionalities like product management, user authentication, and order handling.
• Role & Contributions: Sole developer of the backend API. Built RESTful endpoints using Express.js and connected them to a MongoDB database for scalable data handling.
• Features: RESTful API architecture, user authentication system, product and order management setup, ready for frontend integration.

• Diploma in Engineering – Computer Science & Technology
  • Munshiganj Polytechnic Institute, Bangladesh | 2023 – Present
• Secondary School Certificate (SSC) | 2022

• Phone: +880-1924259064
• Email: devrahmatullah@gmail.com
• Portfolio: rahma-dev.vercel.app
• GitHub: Tamhat
• LinkedIn: devrahmat
• Medium: devrahmatullah

If you're interested in collaborating or have a project in mind, feel free to reach out! You can book a 20-minute call to discuss how I can contribute to your vision.