Open to opportunities

Harsha Kumar

@harshakumar

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Senior full-stack engineer specializing in backend systems, AI integration, and scalable web/mobile apps.

India

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What I'm looking for

I seek senior engineering roles where I can lead product-focused teams, build scalable cloud-native systems, integrate AI features, and drive end-to-end product excellence.

I am a senior software engineer with extensive experience building full-stack web, mobile and desktop applications, leading teams, and managing product development from ideation to production. I specialize in backend development (NodeJS, Python/Django/Flask), modern JavaScript frameworks (React, Next.js, React Native, Meteor), deployments and scaling on cloud platforms, and integrating LLM/AI features for consumer and enterprise products.

I have led engineering and CTO roles across startups and products serving thousands to millions of users, delivered production-grade architectures, improved frontend and backend structures, and implemented AI-driven features using OpenAI and LLMs. I prioritize elegant design, robust engineering, and end-to-end product thinking to create beautiful, scalable, and user-focused applications.

Experience

Work history, roles, and key accomplishments

Full Stack Engineer

Samwell AI

May 2024 - Apr 2025 (11 months)

Designed and managed deployments via AWS CDK, restructured Next.js frontend to app router, and implemented OpenAI-powered features for essay and research generation serving thousands of users while improving pipeline efficiency.

NodeJS Next.js AWS CDK OpenAI Python Postgres Redis Vercel Cloudflare

Full Stack Engineer

Iollo Inc

Oct 2023 - Apr 2024 (6 months)

Managed deployments and technical roadmap for a medical reporting platform, architected storage and caching for thousands of medical reports, and integrated LLM prompts and OpenAI into the product stack.

Node React AWS CDK NestJS Postgres Redis Vercel OpenAI Zapier

Platform Engineer & Full Stack Lead

HumHum Inc

Aug 2022 - Apr 2023 (8 months)

Architected and built backend and frontend for a dating app, implemented scalable video calling, developed pairing algorithms for >1M users, and maintained AWS-based dev/staging/production pipelines.

Node React Docker AWS Postgres Redis Twilio Nginx Docker Swarm

Full Stack Team Lead

Column Inc

Jan 2021 - Apr 2022 (1 year 3 months)

Led engineering for a social media app, created stable frontend/mobile and backend architectures, reviewed code and delivered production-grade features for thousands of users.

Node React React Native Docker Kubernetes Python Flask AWS CI CD

CTO & Full Stack Developer

Augustus Inc

Oct 2019 - Mar 2021 (1 year 5 months)

Led backend and frontend teams to stabilize and deliver end-to-end web and mobile architectures, conducted production testing and performance optimizations to improve product reliability.

Node React React Native Docker Kafka Python Django RabbitMQ Nginx

Full Stack Developer

Novam

Oct 2018 - Jun 2019 (8 months)

Built an e-commerce and blockchain-enabled platform with in-app messenger, music player, product customizer, and integrated cryptocurrency and FedEx delivery workflows.

React React Native NodeJS MongoDB Blockchain Twilio

Full Stack Developer

7-Dimensions

Jan 2018 - May 2018 (4 months)

Developed a synchronized medical logging web and mobile app with multi-file/audio uploads, Google Drive backup integration, and cross-platform sync for practitioners.

React React Native MeteorJS MongoDB Upload Synchronization

Head Web Developer & Projects Manager

Dpauls Inc

Nov 2016 - Jul 2017 (8 months)

Managed design and development projects, led a team to deliver full-stack implementations, collaborated with designers on UI/UX, and performed QA to optimize usability.

Frontend Development Backend Development Team Leadership UI UX QA Project Management

Full Stack Developer (Freelance)

Freelance

Delivered end-to-end React, Node, React Native and Python projects for multiple clients, handling production deployments, API integrations, and performance testing across diverse domains.