Kislay Gupta

Kislay Gupta

Full Stack Software engineer

Pune, India

#OpenToWork

About

Full Stack Software Engineer with 2+ years of experience building scalable SaaS, enterprise, and web applications using React, Next.js, Node.js, TypeScript, PostgreSQL, and MongoDB. Experienced in modernizing enterprise legacy systems, designing REST APIs, optimizing application performance, and developing AI-powered Retrieval-Augmented Generation (RAG) solutions for intelligent document search. Strong background in frontend architecture, backend development, API integrations, and delivering production-ready software within remote Agile teams using modern AI-assisted development workflows. Core Technologies Languages: JavaScript, TypeScript, Python, SQL, HTML5, CSS3 Frontend: React.js, Next.js, Tailwind CSS, Shadcn UI, Zustand, React Query Backend: Node.js, Express.js, REST APIs, JWT Authentication, RBAC, API Design Mobile: React Native, Expo Databases: PostgreSQL, MongoDB AI: RAG, LLM Integration, Prompt Engineering, OpenAI APIs, AI-Assisted Development Dev Tools: Git, GitHub, Linux, Docker, Postman, VS Code, Jira

What I'm looking for

I'm looking for a challenging role where I can contribute to meaningful projects, continue improving my technical skills, collaborate with talented teams, and grow into a stronger software engineer while delivering real business value.

Experience

Full Stack Software Engineer

Bytzsoft Technologies

Nov 2025 – Present

• Leading migration of a mission-critical Aviation Management System from VB.NET to a modern React, Node.js, and PostgreSQL architecture. • Designed and implemented scalable REST APIs using Node.js and Express, replacing tightly coupled legacy business modules with modular backend services. • Developed an AI-powered Retrieval-Augmented Generation (RAG) assistant enabling semantic search across aviation operational documentation. • Optimized PostgreSQL schemas, indexing strategies, and complex queries to improve performance for high-volume operational datasets. • Built reusable React component architecture and modern UI workflows, improving maintainability and accelerating feature delivery. • Leveraged AI-assisted development tools including Claude and ChatGPT for code generation, debugging, documentation, refactoring, and software design. • Collaborated with cross-functional engineering teams in a fully remote Agile environment to deliver production-ready enterprise software.

React.jsNode.jsPostgreSQL
Sparkovationhub Pvt. Ltd.

Frontend / Full Stack Developer

Sparkovationhub Pvt. Ltd.

Mar 2024 – Oct 2025

• Built and maintained production web applications using React.js, Next.js, TypeScript, Node.js, and MongoDB. • Led modernization of the BNMU University website by migrating from WordPress to a scalable React + Node.js architecture. • Improved website performance through code splitting, lazy loading, rendering optimization, and efficient REST API integration. • Achieved 90+ Lighthouse Performance and SEO scores through frontend optimization and improved rendering strategies. • Designed reusable UI components and scalable frontend architecture to reduce future development effort and improve maintainability. • Developed CMS modules supporting university administration including notices, departments, officers, and academic resources. • Built responsive dashboards, authentication systems, and dynamic interfaces across multiple production projects. • Mentored students and junior developers in JavaScript, React, and modern frontend engineering through project-based learning.

React.jsNext.jsMongoDB

Education

Sri Satya Sai University of Technology & Medical Sciences

Sri Satya Sai University of Technology & Medical Sciences

Bachelor of Computer Applications (BCA)

2020 – 2023

Skills

postgresqlMongoDBTypescriptExpressNodeReact

Languages

English (Professional working proficiency)Hindi (Native or bilingual proficiency)