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MRINAL

Full-Stack Developer • 4+ Years Experience

Bengaluru, India

Professional Summary

Full-Stack Developer with 4+ years of experience across freelance, startups, and product companies, building polished React/Next.js frontends alongside Node.js/Express APIs and backend services that power them. At FC.ONE, helped scale the platform from 15 to 750+ sports academy partners serving 100,000+ registered users across 10+ cities.

Work Experience

Full-Stack Developer | Freelance

Jul 2022–Sep 2023, Dec 2024–Present • Bengaluru
  • Agentic AI Chat Platform: Enterprise chat platform built on Node.js backend powering WebSocket streaming, session management, and model switching, with frontend handling conditional rendering of markdown, tables, charts, Excel, URLs, MSAL SSO, and Azure deployment.
  • Order Discrepancy Dashboard: Streamlined order-discrepancy resolution by replacing manual review with a paginated workflow supporting filtering, approve/reject actions, and automatic promotion of resolved cases into audit history.
  • Pulsedoge & Poorpleb (Web3): Enabled self-service token migration for two Web3 platforms, integrating wallet connectivity, token-burning/claim flows, and on-chain transaction state using React, Node.js, Web3.js, and Ethers.js.
  • Delivered feature enhancements, performance improvements, and Figma-to-pixel-perfect builds across multiple client projects.

Software Developer | FC.ONE

Oct 2023–Nov 2024 • Bengaluru

Core member of a lean three-person engineering team that scaled FC.ONE from 15 to 750+ sports academies and gyms across 10+ cities, supporting 100,000+ users.

  • Booking Platform: Digitized end-to-end booking workflow for courts, trainings, and memberships with conditional slot availability, multi-person reservations, payments, and automated WhatsApp/Email invoice delivery.
  • Admin Dashboard: Centralized academy operations into a multi-role dashboard giving real-time visibility into earnings, bookings, cash payments, and student attendance.
  • Coach Attendance App: Automated coach/student attendance tracking through facial recognition and manual check-ins syncing attendance data with the admin dashboard.
  • Community & Apartment App: Built paginated feeds, watermarked story sharing, WebSocket updates, and integrated booking/membership flows.
  • Sales & Support CRM: Connected Instagram ad leads directly to sales pipeline; enabled agents to onboard academies end-to-end with catalog pages and initial bookings.
  • Frontend Architecture: Instrumenting errors, user behavior, and performance with Sentry, Mixpanel, Clarity, Google Analytics, and Meta Events.

Frontend Developer | Lepton Software

Aug 2021–Jun 2022 • Gurugram
  • SmartMarket: Enabled businesses to analyze location intelligence visually through interactive map-based dashboards built with Deck.gl and Google Maps.
  • Neo360: Enabled telecom teams to analyze large-scale geographic datasets interactively through map layers, filtering, and GeoJSON visualization for client Vodafone.
  • American Express: Improved location-search responsiveness in high-traffic Amex app via debounced autocomplete and backend location suggestion APIs.

Featured Project

www.explore.baby

explore.baby — Social Media App

Solo Full-Stack Build • Node.js, React, Socket.io, Redux, PostgreSQL

Production Deployment
  • • Architected and built the entire platform solo — Node.js/Express backend and REST APIs alongside React frontend — with real-time messaging over Socket.io, typing indicators, online status, and infinite-scroll feed using Redux normalization for O(1) client updates with optimistic UI and rollback.
  • • Engineered app-wide live notifications over Socket.io, @mentions, and time-windowed view tracking; deployed full stack on Vercel + VPS/Nginx with ImageKit CDN.
  • • Implemented JWT authentication with refresh-token rotation, rate limiting, and role-based route protection across the entire API surface.
  • • Instrumented platform end to end with Sentry for error tracking, Mixpanel/Clarity for analytics, and CI/CD pipelines with GitHub Actions for zero-downtime deployments.

Technical Skills

Backend

Node.jsExpress.jsPostgreSQLMongoDBRedisDatabase IndexingDockerAzureVPSNginxPM2CI/CDGit

Backend Tools & Libraries

MongoosePrismaZodbcryptHelmetNodemailerNode-cronBullMQPostman

Real-time & APIs

WebSocketSocket.ioServer-Sent Events (SSE)Long PollingShort PollingREST APIsGraphQLgRPCWebHooks

Frontend

React.jsNext.jsTypeScriptReact QueryRedux ToolkitContext APIReact NativeTailwind CSSFramer MotionMUI

Performance & Security

CSR/SSR/ISRBuild OptimizationCode SplittingTree ShakingXSSCSRFCORSSSRFCSPWeb Vitals

Caching & Observability

Redis CachingHTTP CachingIndexedDBSentryMixpanelClarityGoogle AnalyticsFigmaWeb3.jsEthers.js

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