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Shivain GusainSG
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Shivain Gusain

@shivaingusain

Senior software engineer at Newgen who built a LangChain and Gemini support agent using RAG and pgvector.

India
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At Newgen, I architected a support agent that uses LangChain, Gemini, and pgvector to query troubleshooting guides and technical documentation. It reduced user resolution times.

I also improved dashboards by 50% through list virtualization and optimized conditional rendering, and helped resolve state-management and performance bottlenecks in Newgen’s BAM admin module. I migrated the application from React 17 to React 18.

At Knimbus, I helped migrate Knimbus v4 from Angular to React and built analytics dashboards for its digital library platform. Earlier, at TechDimension IT Solutions, I contributed to an Applicant Tracking System and developed Node.js and Express REST APIs; in personal projects, I built a browser-based video editor and conversion platform and developed RESTful APIs for FreeLanceTracker.

Experience

Work history, roles, and key accomplishments

NE

Senior Software Design Engineer

Newgen

Feb 2026 - Sep 2026 (7 months)

Accelerated BAM micro-frontend loading and boosted mobile web stability by resolving state-management and performance bottlenecks. Boosted dashboard speed by 50% via list virtualization and optimized conditional rendering, and architected a RAG pipeline using LangChain, Gemini, and pgvector for an automated support agent.

KN

Senior Frontend Developer

Knimbus

May 2023 - Feb 2026 (2 years 9 months)

Spearheaded the architectural migration of Knimbus v4 from Angular to React, transitioning a large-scale digital library platform. Engineered high-performance analytics dashboards using Chart.js and TanStack Query, and implemented JSON-driven theming with Emotion.js and an AI-powered chatbot.

TI

Software Developer

TechDimension ITSolutions

Aug 2021 - May 2023 (1 year 9 months)

Contributed to a full-stack Applicant Tracking System (ATS) supporting job posting, candidate search, and management. Developed and integrated Node.js/Express REST APIs for authentication and core ATS workflows, and integrated ElasticSearch API and Next.js SSR for SEO.

Education

Degrees, certifications, and relevant coursework

The Linux Foundation logoTF

The Linux Foundation

LFEL1004: Authentication & Authorization for Web/API, Web/API Security

Completed the LFEL1004: Authentication & Authorization for Web/API certification from The Linux Foundation in September 2026.

The Linux Foundation logoTF

The Linux Foundation

LFS184: Introduction to JavaScript Security, JavaScript Security

Completed the LFS184: Introduction to JavaScript Security certification from The Linux Foundation in September 2026.

IBM logoIB

IBM

Enterprise Design Thinking Practitioner, Design Thinking

Earned the Enterprise Design Thinking Practitioner certification from IBM in November 2022.

UU

Uttaranchal University

Bachelor of Technology, Computer Science and Engineering

2018 - 2022

Bachelor of Technology in Computer Science and Engineering from Uttaranchal University, Dehradun, UK, from 2018 to 2022.

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