Building things from scratch.
I'm Harshdeep Saiyam, a passionate full stack software developer with a lifelong fascination for coding and building things from scratch.
1export const harshdeep = {2 name: "Harshdeep Saiyam",3 role: "Senior Software Engineer",4 company: "ByteFoundry",5 location: "India",6 yearsOfExperience: 6,7 previously: ["Amplifai", "Jellyfish Technologies"],8};Talking about tech and future technologies excites me, and I enjoy sharing insights and learning from others in the field.
When I'm not immersed in code, you can find me watching anime or spending quality time with family and friends.
- 6yrs
- Professional experience
- 3
- Client regions: US, NZ, Canada
- 16
- Technologies I work with
- 4
- Blog posts written
From DB schema to UI.
Production-grade SaaS across React, Next.js, Node.js, and PostgreSQL — multi-tenant features, real-time pipelines, AI-driven workflows, and third-party integrations.
AI-driven workflows
A hybrid bulk-upload pipeline where parallel workers run Gemini classification to create draft products, enabling 50+ concurrent uploads — plus an AI price-prediction engine with an LLM fallback.
Real-time systems
Live progress on Supabase Realtime (WebSocket) with a 3-second polling fallback for flaky networks.
Multi-tenant architecture
Tiered consignment splits with JSONB price brackets in PostgreSQL and a five-level resolution waterfall.
Third-party integrations
A self-serve POS integration framework, Shopify metafield sync, and a manual checkout migrated to Stripe.
Web and mobile
Next.js web apps alongside cross-platform React Native builds, including a marketplace and an Android POS app.
Where I've worked.
Three companies since 2020. The details are in the full resume →
- Aug 2026 – Present
Senior Software Engineer
ByteFoundry ↗ - Dec 2025 – Jul 2026
Senior Full-Stack Engineer
Amplifai ↗Multi-tenant B2B SaaS for consignment & resale stores.
Next.js 14TypeScriptSupabaseQStashVercel AI SDK - Jan 2020 – Nov 2025
Senior Software Engineer
Jellyfish Technologies ↗~6 years across web and mobile delivery for clients in the US, NZ, and Canada.
ReactNext.jsReact NativeNode.jsAWS
Selected work.
More projects coming soon... View all on GitHub →
harshdeep.dev
productioncollaborative-whiteboard
developmentReal-time collaborative drawing tool using Canvas API and Yjs CRDT for conflict-free synchronization.
ai-chat-interface
developmentModern chat interface for AI assistants with streaming responses and markdown rendering.
The toolbox.
16 technologies across four areas, 84% average proficiency.
Frontend
07- React5y · 90%
- Next.js4y · 85%
- TypeScript4y · 85%
- JavaScript6y · 95%
- Tailwind CSS3y · 90%
- HTML/CSS6y · 95%
- Redux4y · 80%
Backend
03- Node.js5y · 85%
- Express4y · 80%
- REST APIs5y · 90%
Database
03- MongoDB4y · 80%
- PostgreSQL3y · 75%
- MySQL4y · 80%
Tools
03- Git6y · 90%
- Docker2y · 70%
- Linux4y · 75%
From the blog.
I always wanted to create a blog ... this is me giving it a go.
Introducing Macrohard: Elon Musk’s AI-Only Software Startup
Elon Musk launches Macrohard, an all-AI software company under xAI, aiming to revolutionize the software industry by automating the entire development lifecycle.
read more →2025-08-23This Chinese AI Just CRUSHED OpenAI (And It's Almost Free)
DeepSeek R1, a Chinese AI model, matches and sometimes surpasses OpenAI's o1 at a fraction of the cost, marking a seismic shift in the AI industry.
read more →2025-05-26The Future is Whispering: Invisible Smart Earpieces, AR Contact Lenses, and AI Integration
Explore the near future of invisible wearable tech — tiny smart earpieces and AR contact lenses working together with AI to deliver seamless, private, real-time information and augmentation.
read more →Let's build something amazing together.
Email is the fastest way to reach me for professional inquiries.