Rayhan Kobir 👋

Software Engineer 🧑‍đŸ’ģ

A passionate Software Engineer and freelancer, dedicated to building innovative & high-quality software products and web applications, back-end focused solutions.
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Skills

JavaScript
TypeScript
Go
Node.js
Next Js
Nest Js
React
PostgreSQL
MongoDB
Redis
WebRTC
WebSocket
GraphQL
Microservices
Docker
AWS
Serverless
CI/CD
Git
RPC
tRPC

Let's connect

Email

rayhankobir793@gmail.com

Phone

+8801704355097

Address

Dhaka, Bangladesh

My Experiences

Where I’ve Been Employed

The Red It

The Red It

Software Engineer

  • Handle their backend services
  • Implement Voice Calling Extentension

Node.js

Express.js

GraphQL

AWS

Docker

Serverless

React

Oct 2024 - Present

Dhaka, Bangladesh (Remote)

Velar

Velar

Junior Software Engineer

Next.js

Node.js

Nest.js

Typescript

Docker

AWS

CI/CD

Kubernetes

MongoDB

PostgreSQL

Prisma

tRPC

Feb 2024 - Oct 2024

Montreal, Canada (Remote)

Xtream Solution Ltd.

Xtream Solution Ltd.

Junior Software Engineer

WebSocket

WebRTC

GraphQL

Microservices

RPC

Jan 2023 - Sep 2023

Chittagong, Bangladesh (Hybrid)

Xtream Solution Ltd.

Xtream Solution Ltd.

Trainee Software Engineer

Node.js

Nest.js

Typescript

MongoDB

PostgreSQL

Jun 2022 - Dec 2022

Chittagong, Bangladesh (Hybrid)

My Latest Works

Featured Projects And Works

Compilation of case studies that evoke my sense of pride

Silent Eye (Core)

Silent Eye (Core)

SilentEye is an advanced mobile device monitoring and control platform designed to give users comprehensive remote access and management capabilities using only a phone number—no physical access or app installation required.

Next.jsTailwind CSSTypeScriptReact
🔐 Confidential
Silent Eye (Admin)

Silent Eye (Admin)

SilentEye is an advanced mobile device monitoring and control platform designed to give users comprehensive remote access and management capabilities using only a phone number—no physical access or app installation required.

Next.jsTailwind CSSTypeScriptReact
🔐 Confidential
Silent Eye (Visitor)

Silent Eye (Visitor)

SilentEye is an advanced mobile device monitoring and control platform designed to give users comprehensive remote access and management capabilities using only a phone number—no physical access or app installation required.

Next.jsTailwind CSSTypeScriptReact
PreviewGitHub
Trion - Chatbot Platform

Trion - Chatbot Platform

Trion is a chatbot platform that allows users to create flows and send messages to social media platforms or other media.

Nest.jsNext.jsPostgreSQLRedisWebSocketGraphQL
🔐 Confidential
Sports Dashboard

Sports Dashboard

A dashboard for sports management, built with Next.js and Node.js.

Next.jsNodejsMongoDBRedisTypeScriptReact
PreviewGitHub
Puzzle Solver

Puzzle Solver

I recently built a web application and API to solve the 8-puzzle problem. The algorithm uses the A* search algorithm and the Manhattan distance heuristic to effectively explore the state space and find the optimal solution. The visualization of the solution path and the iteration tree provides a clear understanding of the puzzle-solving process. The algorithm demonstrates good performance in terms of finding the solution within a reasonable time frame. However, further enhancements can be made to optimize the algorithm and improve its performance. Overall, the project achieves its goal of solving the 8-puzzle problem and serves as a solid foundation for further research and development in the field of puzzle-solving algorithms.

ReactNode JsExpressREST APIA* Algorithm
PreviewGitHub

Educational Background

Where I’ve Been Studied

Green University of Bangladesh

Green University of Bangladesh

Bachelor of Science in Computer Science and Engineering

Nov 2024 - Dec 2024

Dhaka, Bangladesh

Naogaon Polytechnic Institute

Naogaon Polytechnic Institute

Diploma in Computer Science and Engineering

Nov 2024 - Dec 2024

Naogaon, Rajshahi

Al Helal Islami Accademy

Al Helal Islami Accademy

Seconday School Certificate

Nov 2024 - Dec 2024

Sapahar, Naogaon

Testimonials

What People Say About Me

Here are some testimonials from my clients and colleagues.

Perfect communication, did everything i asked for and explained the code to me as well. Can only recommend him! Quick and fast, helped with site for my business

★★★★★

Zennit Music

Music Company

Fiverr

He was willing to go up and beyond the requested requirements to get the job done. I appreciate this seller's willing to work with what I requested him to complete.

★★★★★

Carlly B

Business Owner

Fiverr

Good job i have to say, comunication as wanted, reacted to revisions and all that in a professional matter.

★★★★★

George

Business Consultant

Fiverr

Perfect!! And very fast in delivering the project, when I had problem in running the project he knew where was the problem and showed me exactly how to run it.

★★★★★

Toom Hary

Business Consultant

Fiverr

He does exceptional quality work, he was very patient with my requirements and offered to make all the modifications and revisions needed. I definitely would recommend.

★★★★★

Jooseph

Product Manager

Fiverr

Resilient and kept on trying different solutions until problem resolved. thank you.

★★★★★

Alterson

Software Engineer

Fiverr

Rayhan Kobir was great to work with. The website looks exactly like the wire-frames supplied. Rayhan kobir was very responsive and delivered the product in a timely manner.

★★★★★

Revolution

Business Owner

Fiverr

It was great working with Raju Rayhan and will consider him for future products.

★★★★★

Dr Pradeep

Doctor

Fiverr

Perfect communication, did everything i asked for and explained the code to me as well. Can only recommend him! Quick and fast, helped with site for my business

★★★★★

Zennit Music

Music Company

Fiverr

He was willing to go up and beyond the requested requirements to get the job done. I appreciate this seller's willing to work with what I requested him to complete.

★★★★★

Carlly B

Business Owner

Fiverr

Good job i have to say, comunication as wanted, reacted to revisions and all that in a professional matter.

★★★★★

George

Business Consultant

Fiverr

Perfect!! And very fast in delivering the project, when I had problem in running the project he knew where was the problem and showed me exactly how to run it.

★★★★★

Toom Hary

Business Consultant

Fiverr

He does exceptional quality work, he was very patient with my requirements and offered to make all the modifications and revisions needed. I definitely would recommend.

★★★★★

Jooseph

Product Manager

Fiverr

Resilient and kept on trying different solutions until problem resolved. thank you.

★★★★★

Alterson

Software Engineer

Fiverr

Rayhan Kobir was great to work with. The website looks exactly like the wire-frames supplied. Rayhan kobir was very responsive and delivered the product in a timely manner.

★★★★★

Revolution

Business Owner

Fiverr

It was great working with Raju Rayhan and will consider him for future products.

★★★★★

Dr Pradeep

Doctor

Fiverr
Pattern

Let's Connect and Create Something Amazing!

Ready to bring your next project to life? Let's connect and discuss how I can help you achieve your goals.

Contact Me

Thoughts and Blogs

Read My Narrative

Look into my thoughts and my latest blogs.

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Read More

Understanding Caching Strategies in Next.js

Caching is a vital performance optimization technique that stores copies of files or data in a temporary storage location (the cache) for quick access. Implementing an effective caching strategy can significantly improve application speed, reduce load on servers, and provide a better user experience.

Read More

Node.js-āĻ WebRTC āĻ¸ā§‡āĻŸāĻ†āĻĒ

WebRTC āĻšāĻ˛ā§‹ āĻāĻ•āĻŸāĻŋ āĻ“āĻĒā§‡āĻ¨ āĻ¸ā§‹āĻ°ā§āĻ¸ āĻŸā§‡āĻ•āĻ¨ā§‹āĻ˛āĻœāĻŋ, āĻ¯āĻž āĻŦā§āĻ°āĻžāĻ‰āĻœāĻžāĻ° āĻ“ āĻŽā§‹āĻŦāĻžāĻ‡āĻ˛ āĻ…ā§āĻ¯āĻžāĻĒā§‡ āĻ°āĻŋāĻ¯āĻŧā§‡āĻ˛-āĻŸāĻžāĻ‡āĻŽ āĻ…āĻĄāĻŋāĻ“, āĻ­āĻŋāĻĄāĻŋāĻ“ āĻāĻŦāĻ‚ āĻĄā§‡āĻŸāĻž āĻŸā§āĻ°āĻžāĻ¨ā§āĻ¸āĻĢāĻžāĻ° āĻ¸āĻšāĻœ āĻ•āĻ°ā§‡āĨ¤ Node.js-āĻ WebRTC āĻ‡āĻ¨ā§āĻŸāĻŋāĻ—ā§āĻ°ā§‡āĻļāĻ¨ āĻ•āĻ°āĻ˛ā§‡ āĻ†āĻĒāĻ¨āĻŋ āĻ¸ā§āĻ•ā§‡āĻ˛ā§‡āĻŦāĻ˛ āĻ“ āĻĒāĻžāĻ°āĻĢāĻ°āĻŽā§āĻ¯āĻžāĻ¨ā§āĻŸ āĻ°āĻŋāĻ¯āĻŧā§‡āĻ˛-āĻŸāĻžāĻ‡āĻŽ āĻ…ā§āĻ¯āĻžāĻĒā§āĻ˛āĻŋāĻ•ā§‡āĻļāĻ¨ āĻ¤ā§ˆāĻ°āĻŋ āĻ•āĻ°āĻ¤ā§‡ āĻĒāĻžāĻ°āĻŦā§‡āĻ¨āĨ¤

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Node.js-āĻ Webhook āĻ‡āĻŽāĻĒā§āĻ˛āĻŋāĻŽā§‡āĻ¨ā§āĻŸā§‡āĻļāĻ¨: PostgreSQL āĻ“ Redis āĻ¸āĻš

Node.js-āĻ Webhook āĻ‡āĻŽāĻĒā§āĻ˛āĻŋāĻŽā§‡āĻ¨ā§āĻŸā§‡āĻļāĻ¨, PostgreSQL āĻ“ Redis āĻ‡āĻ¨ā§āĻŸāĻŋāĻ—ā§āĻ°ā§‡āĻļāĻ¨, āĻāĻŦāĻ‚ āĻ‡āĻ­ā§‡āĻ¨ā§āĻŸ-āĻĄā§āĻ°āĻŋāĻ­ā§‡āĻ¨ āĻ†āĻ°ā§āĻ•āĻŋāĻŸā§‡āĻ•āĻšāĻžāĻ°ā§‡āĻ° āĻŽāĻžāĻ§ā§āĻ¯āĻŽā§‡ āĻ•āĻŋāĻ­āĻžāĻŦā§‡ āĻ°āĻŋāĻ¯āĻŧā§‡āĻ˛-āĻŸāĻžāĻ‡āĻŽ āĻ“ āĻ¸ā§āĻ•ā§‡āĻ˛ā§‡āĻŦāĻ˛ āĻ¸āĻŋāĻ¸ā§āĻŸā§‡āĻŽ āĻ¤ā§ˆāĻ°āĻŋ āĻ•āĻ°āĻž āĻ¯āĻžāĻ¯āĻŧ, āĻ¤āĻžāĻ° āĻŦāĻŋāĻ¸ā§āĻ¤āĻžāĻ°āĻŋāĻ¤ āĻ†āĻ˛ā§‹āĻšāĻ¨āĻžāĨ¤

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Hackathons

I like Building Things

During my time in university, I attended 5+ hackathons. People from around the country would come together and build incredible things in 2-3 days. It was eye-opening to see the endless possibilities brought to life by a group of motivated and passionate individuals.

  • Coderbrix

    Coderbrix

    Online

    Developing an organization called Coderbrix, which will provide digital services and solutions.
    Website
  • Chatbot Platform (Trion)

    Chatbot Platform (Trion)

    Local

    Currently building a chatbot platform called Trion, which will allow users to create flow and send messages to social media platforms or others media.