// full-stack & ml systems engineer
Nithin Kumar
Meena
I build the parts of a product that aren't allowed to go down — APIs under real traffic, computer vision pipelines that run unattended at scale, and the real-time infrastructure underneath. Based in Hyderabad, working with teams everywhere.
client → api (rest + socket.io) → ml pipeline / database
About
I started as a frontend intern shipping UI tickets. Three years later I was the contract CTO of a healthcare startup, owning the technology roadmap, and the engineer who put a computer vision model into a pipeline making 40,000+ automated decisions a day with no human in the loop. In between, I've built real-time systems with Socket.io, designed REST APIs and MongoDB schemas for production load, and trained a segmentation model over 6,000,000 iterations until it held at 99%+ accuracy. I work across the stack because production systems don't respect the boundary between frontend, backend, and ML — somebody has to own the whole path from request to result.
Stack status
Frontend
stableInterfaces built to stay fast under real data volume, not just in a demo recording.
Backend
stableServices written to be read by someone debugging them at 2am, not just to pass a code review.
Data
stableSchemas and indexes built around how the data is actually queried, not just how it's modeled.
AI / ML
stableModels trained to ship into a pipeline and evaluated on production error rates, not notebook accuracy.
Infrastructure
stableThe unglamorous layer that makes everything above it reliable enough to trust.
Deploy log
- Led the development of Drivonic, coordinating 4+ engineers while shipping 20+ production features across vehicle management, CRM, and dealership operations.
- Architected high-performance backend services including OpenSearch audience indexing, Stripe payment infrastructure, and manual append pipelines integrating KBB, Black Book, and Recall data providers for real-time vehicle enrichment.
- Designed scalable REST APIs, optimized database queries, and introduced reusable backend architecture, reducing API latency by 40% and accelerating feature delivery by 35%.
- Owned technical planning, code reviews, production deployments, and cross-team collaboration, delivering 50+ releases while maintaining high code quality and platform stability.
- Owned technology strategy and execution for a digital healthcare platform, directing engineers, designers, and stakeholders to hit product milestones on schedule.
- Designed and shipped an AI resume-parsing system using NLP and transformer models, cutting manual data entry by 70% and speeding up candidate onboarding.
- Built real-time infrastructure with Node.js and Socket.io that measurably improved platform reliability and user retention.
- Set the technology stack, microservices architecture, and a 12-month engineering roadmap for projected growth.
- Designed and shipped dynamic web apps with React.js and Node.js/Express.js across multiple concurrent client projects.
- Built REST APIs and third-party integrations, cutting integration turnaround time by 30%.
- Worked closely with design and QA to refine functionality, reaching a 25% faster delivery cycle.
- Cut software defects by 40% through systematic unit testing and end-to-end coverage across web and mobile.
- Trained a production image-segmentation model on 60,000+ images over 6,000,000 iterations in PyTorch, reaching 99%+ accuracy with a 0.5–1% inference error rate.
- Deployed it to a pipeline processing 40,000+ images a day for automated quality assessment — zero manual review required.
- Built a multi-class classifier for vehicle type and shot angle that powered customized image pipelines for a high-volume car marketplace.
- Applied augmentation and bias-correction techniques to improve generalization across lighting and shooting conditions.
- Built and maintained UI across 20+ pages, contributing to a 15% lift in measured user engagement.
- Standardized components and workflows, cutting delivery timelines by 20%.
Selected builds
Zenith Studio
A real-time collaborative workspace for creative teams — concurrent multi-user sessions, live project boards, and asset sharing. WebSocket-based state sync keeps every collaborator's view consistent without a page refresh.
HireHub
A full-stack job portal — candidate profiles, job search, application tracking, and role-based access control, with indexing tuned for concurrent load.
Learnify
A MERN e-learning platform with live instruction, personalized learning paths, and a mobile-first responsive interface running multiple active student cohorts.
Booklore
A blogging platform with a complete CMS — content creation, a publishing workflow, and social integrations to drive organic traffic. Owned end-to-end, from schema design to deployment.
Track record
MERN Stack Web Developer — Zepskill
Jan 2022 – Sep 2022. Formal training in the exact stack used across every build on this page.
Algorithmic problems solved on LeetCode & GeeksforGeeks — data structures and algorithms under real constraints, not just syntax.
Open a channel
Currently freelancing and open to full-time backend, full-stack, or ML systems engineering roles. Remote-first, happy to work across time zones.