Headline

Full Stack MERN Engineer · Node.js · MongoDB · Real-time Systems | REST APIs | 3+ Years Shipping Production SaaS | AWS · Docker · CI/CD

About

Full Stack Engineer with 3+ years of experience building scalable SaaS platforms — reducing upload failures by ~60%, improving MongoDB query speed by 40–60%, and cutting CI/CD build times by ~55% in production environments. I specialize in designing backend systems, building high-performance APIs, optimizing database performance, and developing end-to-end product features that scale. My experience includes architecting chunk-based large file upload systems, implementing real-time communication with WebSockets, optimizing MongoDB through indexing and aggregation pipelines, and building resilient REST APIs with structured validation and error handling. At InCruiter, I work on AI-powered interview automation products, developing features across the entire interview lifecycle — including candidate onboarding, assessment workflows, proctoring, reporting, and real-time event processing. As part of the team, I contributed to DevOps improvements reducing Docker image size by ~60% and CI/CD build time by ~55%, significantly accelerating deployment cycles. Previously, I designed event-driven IoT integrations using Tuya APIs and secure webhook architectures to power smart room automation systems, enabling real-time synchronization of lighting, thermostats, occupancy detection, and device management. I enjoy solving complex engineering problems involving scalability, performance, reliability, and clean architecture — and I bring the same focus whether working in a startup, a growing product team, or a large-scale engineering organization. Tech Stack: Node.js • React.js • MongoDB • TypeScript • Express.js • Redux • Socket.IO • Docker • AWS • REST APIs • WebSockets • Event-Driven Systems • IoT Integrations

Location

Bengaluru

AI stack

claude code

cursor

openai

Work experience

Senior Fullstack Engineer at DataNova, Aug 2026 - Present · 3 mo, Ahmedabad (Hybrid), Building production features across the MERN stack and Next.js, plus Python and PHP/Laravel.

Backend Developer at InCruiter, Aug 2025 - Jun 2026 · 10 mo, Bengaluru, • Owned features end to end across backend, frontend and DevOps at an AI interview platform. • Built an in-house chunked interview recording pipeline (React, Node.js, GCS/S3) replacing a paid third-party service (100ms), with IndexedDB buffering during network drops and grace-period merging into seekable full-length videos. • Designed RESTful APIs for the full interview lifecycle (onboarding, evaluation, verdict) with RBAC; optimized MongoDB with compound indexes and aggregation pipelines for 40–60% faster queries. • Implemented Redis caching for interview/session data and WebSocket retry/reconnection policies for live session continuity. • Built modular middleware and reusable React/Next.js/Redux components, cutting feature delivery time by ~25%. • Reduced Docker image size by ~60% and CI/CD build time by ~55%.

Full Stack Developer at OpenIntervue, Jan 2025 - Jul 2025 · 6 mo, Remote, • Built Node.js/Express.js microservices for Pihu, an AI-driven async video interview platform: scheduling, dynamic question flows, scoring logic and RBAC. • Supported 1,000+ interviews/month in production. • Refactored React/Redux frontend modules (with Next.js), improving dashboard load/response time by ~20–30%. • Worked with designers and PMs in agile sprints.

Web Developer at Pardy Panda Studios, Apr 2023 - Jan 2025 · 1 y 9 mo, Vadodara, Gujarat, India, • Built a hotel management SaaS from scratch (booking engine, front desk, room management, admin) with Node.js, MongoDB and React; live at shashihotel.com for a 100+ room property. • Architected event-driven IoT integration via Tuya APIs and webhooks: smart-room automation across 4+ device types (lighting, thermostat, presence sensors) with real-time device-state sync. • Integrated Firebase for live dashboards; implemented RBAC, secure auth flows, code splitting and lazy loading.

Education

Full Stack Web Development, MERN Stack Development, Masai

Bachelor of Engineering - BE, Mechanical Engineering, Matoshri College of Engineering and Research Centre, Eklahare, Nashik

Public links

github: https://github.com/Shiva7781

leetcode: https://leetcode.com/shivavishwakarma7781

shiva7781-portfolio.netlify.app: https://shiva7781-portfolio.netlify.app/?ref=talboss