KARTAVYAPANTHI
I build backend-heavy products, admin platforms, and production workflows with Next.js, Node.js, NestJS, and databases. 3+ years turning messy product requirements into reliable systems that teams can actually ship.
ENGINEERED FOR SCALE
I'm Kartavya Panthi, a Senior Software Engineer and Consultant with 3+ years of experience building production systems that handle real-world traffic at scale.
My expertise spans the full stack — from crafting pixel-perfect UIs with React & Next.js, to designing robust APIs with Node.js & NestJS, to architecting databases with MySQL, MongoDB & PostgreSQL.
When I'm not consulting, I love producing educational tech content on my YouTube channel Zero Down Time.
"name": "Kartavya Panthi",
"title": "Senior Software Engineer",
"location": "Remote / Worldwide",
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"youtube": "@zero_down_time"
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BUILT THROUGH REAL WORK
Shipping production systems across RCM platforms, CMS products, microservices, dashboards, real-time updates, and cloud deployments.
Senior Software Engineer Consultant
Serving in an associate tech lead capacity for an RCM platform, driving end-to-end development, feature delivery, production support, and engineering quality across frontend, backend, and microservice teams.
Full Stack Developer
Led full-stack delivery for a multi-region health news platform, including NestJS microservices, a centralized API gateway, CMS workflows, real-time updates, and production deployments on AWS.
Full Stack Developer
Contributed to multiple web platforms including carbike360.com, cmv360.com, and comparos.in, with work across CMS setup, frontend delivery, dashboards, backend services, and performance optimization.
Software Developer Engineer
Built a feature-rich Next.js application with full-stack responsibilities across authentication, data modeling, invoice generation, and GST-aware business logic.
MY TECH STACK
APIs, auth flows, queues, integrations, and service layers that are easy to maintain.
SELECTED WORK
Invoice Generation System
A profile-based invoicing platform for generating Indian tax-compliant invoices with CGST, SGST, and IGST support. Users can create invoices, download polished invoice files, and maintain a searchable history of every invoice under their account.
Health News CMS & Campaign Platform
A CMS for a health news platform where editorial teams can create and manage news, blogs, and stories. The platform also supports reusable campaign templates, dynamic email template creation, and multi-channel campaign delivery.
Real-Time Subtitle & Highlight Generator
A video intelligence workflow that generates subtitles from speech in near real time, stores generated assets in the cloud, and renders highlight clips from continuous video frames for future reference and reuse.
ZERO DOWNTIME
A practical software engineering channel focused on backend systems, system design, scalability, production failures, and the decisions behind real-world architecture.
Our API crashed because of one client. Here’s why
A real-world breakdown of rate limiting, Redis, API gateways, and safer 429 responses.
Serverless: The Cost Lie Nobody Talks About
When serverless helps, when it hurts, and the hidden costs engineers should plan for.
The Brutal Difference Between Junior and Senior Engineers
Why senior engineers are not just faster coders, but better system thinkers.
Most developers debug completely wrong
A sharper way to think through bugs instead of randomly changing code.
Backend engineering, APIs, databases, JavaScript, TypeScript, Python, system design, scalability, performance, and production lessons for engineers who want to think deeper.
@ZERO_DOWN_TIMELET'S BUILD TOGETHER
Share what you are building, where it is stuck, and what a good outcome looks like.
Taking on selected product, backend, and full-stack work. Response within 24 hours.
- ▹ Full-Stack Development
- ▹ API Architecture & Design
- ▹ Performance Optimization
- ▹ Code Review & Audit
- ▹ Team Mentorship
- ▹ Technical Leadership