Abhishek Sinha

React Developer & AWS Engineer

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Summary

Results-driven React developer & AWS Engineer with 5+ years of experience building scalable web applications and cloud-native systems. Skilled in Python, Django, Next.js, REST APIs, and AWS (Cognito, DynamoDB, Lambda, S3). Proven success in improving system performance by 20%+, implementing secure authentication with RBAC, and delivering projects ahead of schedule through vibe coding and AI-assisted prompt engineering.

Technical Skills

Frontend

React, Next.js, Angular, TypeScript, JavaScript

Backend

Python, Django, SQL Server, Celery, Redis, REST APIs

Cloud & DevOps

AWS (Cognito, DynamoDB, Lambda, S3)

Key Projects

Chain copy

Live Demo

Shannon's URL Shortener

Live Demo

Work Experience

Digital Refresh Networks

AWS Engineer / Full Stack Developer

Aug 2025 – Present
  • Collaborated on full-stack development integrating Next.js frontend with AWS backend services, significantly improving application scalability and user experience
  • Developed secure authentication system using AWS Cognito with role-based access control (RBAC) for Admin, Agency, and Client groups
  • Integrated Amazon S3 to build a scalable feedback system for creative submissions with efficient upload/retrieval and secure storage
  • Implemented AWS DynamoDB for access control logic and AWS Lambda functions to keep Cognito and DynamoDB in real-time sync
  • Leveraged vibe coding and precision AI prompt engineering to accelerate architecture and deliver ahead of schedule

Ven Analytics

Full Stack Developer

Jan 2024 – June 2025
  • Built Angular frontend from Lovable designs supporting 10,000+ Monthly Active Users (MAU) and improved system performance by 15%
  • Integrated OpenAI API into Django application, creating an intelligent chat interface that reduced user navigation time by 10%
  • Implemented task queuing and asynchronous processing using Celery + Redis, boosting background task efficiency by 20%
  • Conducted code reviews for both frontend and backend, enforcing Clean Code principles and coding standards
  • Onboarded and trained 5 new developers on Django workflows, increasing team productivity by 15%