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Manikant Singh

@manikantsingh1

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Backend Engineer at Fonix Technologies who cut API latency 40% and built payment and real-time backend systems.

India

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At Fonix Technologies, I optimized Node.js REST APIs with Redis caching, database indexing, and query optimization, reducing API latency by 40%. I also unified authentication across services and redesigned fintech payout data models.

I moved heavy tasks to Bull and Redis job queues and added Socket.IO for real-time chat, cutting peak server load by 20%. I also built and maintained Jenkins CI/CD pipelines integrated with GitHub Webhooks.

On Storm Engine, I developed a RAG pipeline for insurance claims analysis with source traceability, Google Document AI, Pinecone, and Celery. For Lendii, I built rental payment flows with Stripe Connect, along with real-time chat and a dynamic pricing engine.

Experience

Work history, roles, and key accomplishments

Current

Backend Developer

Current

Fonix Technologies

May 2025 - Present (1 year 5 months)

Optimized Node.js REST APIs using Redis caching, database indexing, and query optimization, reducing API latency by 40% and improving throughput by 25%. Unified fragmented auth into a single multi-provider system using JWT, bcrypt, RBAC, and OAuth 2.0, raising login success by 35% and cutting auth bugs by 30%.

NodeJS ExpressJS Redis PostgreSQL Sequelize JWT OAuth RBAC Bull Socket.IO Jenkins GitHub Actions CI CD Docker AWS

Full Stack Engineer Intern

Learn and Build

Aug 2023 - Jan 2024 (5 months)

Built JobWay (job portal) and BookSpot (e-commerce) with 35+ REST APIs in Node.js and MongoDB, optimizing queries with Redux Toolkit to cut page load by 30%. Implemented full e-commerce flow with bcrypt auth, RBAC, and Cloudinary CDN, reducing API errors by 25% via input validation and error handling.