Hi, I'm Raj Kar

Tech Lead & Software Engineer at

Building scalable web applications with React, Next.js, TypeScript, and cloud technologies. 8+ years of experience turning ideas into production-ready products.

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About Me

I'm Raj Kar, a passionate Tech Lead & Software Engineer with 3+ years of experience building scalable, high-performance web applications. Currently leading development at , where I architect cloud-native solutions and mentor development teams.

I love solving complex problems and turning ideas into production-ready products. My expertise spans the full stack — from crafting intuitive frontends with React and Next.js, to building robust backends with Node.js and deploying on AWS.

When I'm not coding, you'll find me exploring new technologies, contributing to open source, or sharing knowledge with the developer community.

Experience

Tech Lead & Software Engineer

Aug 2022 - Present

Remote

  • Lead development of multiple client projects, architecting cloud-native solutions using AWS, Node.js, React, and Next.js
  • Built responsive and accessible web applications for diverse clients across industries
  • Optimized legacy codebases, improving performance and maintainability by 40%
  • Conduct technical interviews and mentor junior developers to improve code quality
  • Architected and maintained internal backend projects ensuring robust infrastructure

Software Engineer

Oct 2020 - Jul 2022

Indore, India

  • Developed and maintained React.js applications with focus on unit testing and code quality
  • Collaborated with cross-functional teams to deliver scalable web solutions

Software Engineer

Feb 2018 - Oct 2020

Singapore (Remote)

  • Built and maintained full-stack web applications using modern JavaScript frameworks
  • Contributed to product development from ideation to deployment

Projects

Geetly

Personal

High-quality, ad-free music streaming platform with personalized playlists and seamless playback experience.

Next.jsTypeScriptSupabaseTailwind CSSReact Query

Caprics School

Company

EdTech platform revolutionizing education with interactive learning experiences and comprehensive course management.

ReactNode.jsMongoDBFirebaseAWS
View Project

Bwsala

Company

Digital recruitment platform connecting employers, service providers, and job seekers in Saudi Arabia.

ReactNode.jsRuby on RailsFirebaseAWS

Xcelyst

Company

AI-powered recruitment platform enhancing recruiter and candidate experiences with intelligent matching.

ReactTypeScriptRuby on RailsMySQL

Ylanes

Company

Social platform for meaningful connections through intimate, small group conversations globally.

ReactTypeScriptRuby on RailsFirebaseMySQL
View Project

Peakeaze

Company

Smart accounting assistant for error detection and expert advice on VAT, bookkeeping, and reconciliations.

ReactTypeScriptRuby on RailsMySQL
View Project

Skills

Frontend

ReactReact NativeNext.jsTypeScriptZustandMaterial UIShadcn UIChakra UITailwind CSSVite

Backend

Node.jsExpress.jsTypeORMMongooseREST APIsGraphQL

Database & Cloud

AWS (S3, EC2)SupabaseFirebaseMongoDBPostgreSQLRedis

Tools & Practices

GitDockerCI/CDJestStripeReact QueryESLintPrettier

Education

Bachelor of Computer Applications (BCA)

2019 - 2022

Dr. B.C. Roy Engineering College, Durgapur

Graduated with First Class Honors

  • •Active member of the Coding Club and Hackathons
  • •Participated in various coding competitions
  • •Developed 'College Space' - a web-app for inter-college management

Higher Secondary (12th)

2017 - 2019

Purulia Municipal Managed High School

Graduated with First Class Honors

Blog

I Built My Own CodeSandbox Because Real-Time Collaboration Died

•4 min read
View All Posts

Get In Touch

Have a project in mind or want to discuss opportunities? I'd love to hear from you.