--- title: "Rajdeep Pal (@rajdeepp) | Hashnode" description: "Rajdeep Pal (@rajdeepp) writes on Hashnode. Read their latest articles and follow their work." url: "https://hashnode.com/@rajdeepp" --- @rajdeepp # Rajdeep Pal @rajdeepp · Gurgaon, India · Joined July 2026 [Website](https://trackrai.in/) ### [Why We Ditched Our Physics Graph for a 3D Flip Card Vault](https://trackrai.hashnode.dev/why-we-ditched-our-physics-graph-for-a-3d-flip-card-vault?utm_source=hashnode&utm_medium=feed) Designing for developer psychology: How we built a stress-free cold outreach tracker. 3 min read · [trackrai.hashnode.dev](https://trackrai.hashnode.dev/why-we-ditched-our-physics-graph-for-a-3d-flip-card-vault?utm_source=hashnode&utm_medium=feed) [Sep 24](https://hashnode.com/posts/why-we-ditched-our-physics-graph-for-a-3d-flip-card-vault/6ab5773268fa962ed634f0e4) ### [How One Brutal Code Review Saved Our Live SaaS Architecture](https://trackrai.hashnode.dev/how-one-brutal-code-review-saved-our-live-saas-architecture?utm_source=hashnode&utm_medium=feed) Learn how one brutal code review forced us to rebuild our live SaaS architecture with Razorpay webhooks, idempotency, and Redis rate limiting 3 min read · [trackrai.hashnode.dev](https://trackrai.hashnode.dev/how-one-brutal-code-review-saved-our-live-saas-architecture?utm_source=hashnode&utm_medium=feed) [Sep 4](https://hashnode.com/posts/how-one-brutal-code-review-saved-our-live-saas-architecture/6a9a1bb0f1c61e5536c212bb) ### [Hardening a Next.js & FastAPI SaaS: How We Bulletproofed TrackrAI for Production](https://trackrai.hashnode.dev/hardening-a-next-js-fastapi-saas-how-we-bulletproofed-trackrai-for-production?utm_source=hashnode&utm_medium=feed) Deploying an MVP is one thing. Scaling it into a hardened, production-ready SaaS that securely handles real-world payments, malicious traffic, and edge-case bugs is a completely different beast. Over 4 min read · [trackrai.hashnode.dev](https://trackrai.hashnode.dev/hardening-a-next-js-fastapi-saas-how-we-bulletproofed-trackrai-for-production?utm_source=hashnode&utm_medium=feed) [2](https://hashnode.com/posts/hardening-a-next-js-fastapi-saas-how-we-bulletproofed-trackrai-for-production/6a9748e9e19314542630bcb0) [Sep 1](https://hashnode.com/posts/hardening-a-next-js-fastapi-saas-how-we-bulletproofed-trackrai-for-production/6a9748e9e19314542630bcb0) ### [From Vite to Next.js 15: A Migration Story for Better SEO and Performance](https://trackrai.hashnode.dev/from-vite-to-next-js-15-a-migration-story-for-better-seo-and-performance?utm_source=hashnode&utm_medium=feed) If you are building a modern SaaS product where SEO and organic discoverability matter, don't wait. Take the plunge and move to Next.js. 5 min read · [trackrai.hashnode.dev](https://trackrai.hashnode.dev/from-vite-to-next-js-15-a-migration-story-for-better-seo-and-performance?utm_source=hashnode&utm_medium=feed) [Aug 12](https://hashnode.com/posts/from-vite-to-next-js-15-a-migration-story-for-better-seo-and-performance/6a7cc877b393001b6bf13b7c) ### [Scaling TrackrAI: Why We Migrated to Supabase & Razorpay](https://trackrai.hashnode.dev/scaling-trackrai-why-we-migrated-to-supabase-razorpay?utm_source=hashnode&utm_medium=feed) Building a robust, localized tech stack for the Indian market. 4 min read · [trackrai.hashnode.dev](https://trackrai.hashnode.dev/scaling-trackrai-why-we-migrated-to-supabase-razorpay?utm_source=hashnode&utm_medium=feed) [Aug 6](https://hashnode.com/posts/scaling-trackrai-why-we-migrated-to-supabase-razorpay/6a7476b0dc20a612b48a897b)