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🟢 Open for Freelance & Opportunities

Hi, I'm Rajendra Kumar
Senior Software Engineer

I build fast, scalable web applications, robust APIs, and thoughtful digital experiences—turning complex ideas into clean, reliable products.

India / Remote Worldwide
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Building scalable full-stack and cloud-native products
See What I'm DoingGet In Touch
20+
Projects Completed
2 Active
Currently Building
11+
Years Experience
Live Activity & Focus

What I'm Doing Right Now

A real-time look into my active projects, work in progress, and the new technologies I'm actively exploring.

LearningIn Progress

Google AI Professional Certificate

Completing Google’s AI Professional Certificate on Coursera, with 5 of 8 courses finished.

Current Milestone:
Complete the remaining courses: AI for Data Analysis, AI for App Building, and AI for App Deployment.
Progress63%
Google AICourseraAI ResearchAI WritingAI Content Creation
5 of 8 courses complete
Personal ProjectIn Progress

Rozkhata App

Personal finance app for tracking daily income, expenses, and cash-flow insights.

Current Milestone:
Complete remaining production features—report/profile export and notifications—then perform end-to-end Android/Firebase testing and release preparation.
Progress75%
Flutter/DartFirebase AuthCloud FirestoreFirebase CrashlyticsFirebase Hostingspeech_to_textfl_chartSharedPreferencesGoogle Fonts
Actively building
Personal ProjectUpcoming

Reaction Tester

Simple casual reflex game where players test how fast they can react to a color change, built in Flutter without AI or login.

Current Milestone:
Design remaining screens (How to Play, Game Screen, Result, Final Summary, My Best Scores, Settings), then start Flutter project setup and core game loop (Stopwatch timing logic + red/green state transitions).
Progress15%
FlutterDartshared_preferences (local storage)
Planning phase
Technical Stack & Arsenal

Technologies & Tools I Work With

A comprehensive overview of programming languages, frameworks, databases, and development workflows.

Frontend

Modern, responsive web interfaces and scalable frontend applications

12 skills
React.js
Expert
Next.js
Expert
TypeScript
Expert
JavaScript
Expert
Redux
Expert
Redux Saga
Proficient
Context API
Expert
Gatsby.js
Proficient
Angular
Proficient
HTML5
Expert
CSS3
Expert
SCSS
Expert
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Backend & APIs

Robust server-side systems, API design, and application integrations

5 skills
Node.js
Expert
Express.js
Expert
Next.js Server Functions
Expert
GraphQL
Expert
REST APIs
Expert
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Databases

SQL, NoSQL, and backend-as-a-service data platforms for scalable applications

5 skills
Google Firestore
Proficient
AWS DynamoDB
Expert
SQL
Proficient
MongoDB
Proficient
Supabase
Proficient
Scroll to view all skills

Cloud & AWS

Cloud-native and event-driven services for reliable products

10 skills
AWS Lambda
Expert
AWS S3
Expert
AWS AppSync
Expert
AWS DynamoDB
Expert
AWS Amplify
Proficient
AWS SQS
Proficient
AWS SNS
Proficient
AWS EventBridge
Proficient
AWS CloudWatch
Proficient
Google Cloud Functions
Proficient
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AI

Integrating AI capabilities into practical product experiences

7 skills
OpenAI API
Proficient
AI Integration
Proficient
Codex
Proficient
Claude
Proficient
Cursor
Proficient
Grok
Proficient
Gemini
Proficient
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Architecture & Tools

Scalable frontend architecture, monorepos, build tooling, and CMS

5 skills
Microfrontend Architecture
Expert
Lerna
Proficient
Nx
Proficient
Rollup
Proficient
Contentful CMS
Proficient
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Roku TV App Development

Building Roku TV channel interfaces and streaming experiences

5 skills
BrightScript
Proficient
SceneGraph
Proficient
Video Playback & Streaming
Proficient
REST API Integration
Proficient
HLS Streaming
Proficient
Scroll to view all skills
Get In Touch

Let's Build Something Great Together

Have a project in mind, want to collaborate, or explore opportunities? My inbox is always open.

Send a Direct Message

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