End-to-end features across web and mobile with Next.js, React Native and Node — taken from architecture and data modeling all the way to the last bug fix before release.
- Next.js
- React Native
- Node.js
- Data modeling
UDAY PRATAPSINGH PARIHAR
CAPTRKBASE
I build production features and ruthless automation: LLM-powered products, agentic workflows, and tools that thrive where the documentation runs out.
TitleFULL-STACK · RPA & AUTOMATION · REVERSE ENGINEERING
Drawn byUdayPS
Scale1:1
Rev2.0
Date----.--.--
Dwg NoUDAYPS-2026-001
Observers · live/ --
01 / ABOUT
ABOUT
background & focus
Full-stack developer drawn to the hard, undocumented edges of software. The work splits two ways: shipping clean product features people actually use, and building automation that runs at a scale the original system was never designed to expect.
On record: founding engineer who owned an entire logistics platform end to end, software engineer wiring LLM agents into a production chatbot, freelancer reverse-engineering encrypted APIs — bypassing industrial queue systems and holding hundreds of concurrent sessions steady without anything falling over.
The through-line: a stubborn curiosity about how things actually work under the hood, and the patience to turn that understanding into something dependable. Currently scanning for a team that ships fast and isn't afraid of the messy problems.
7+
products shipped end-to-end
4+
platforms reverse-engineered
1M+
users out-queued in one drop
3+
years in production systems
02 / CAPABILITIES
CAPABILITIES
areas of focus
03 / EXPERIENCE
Where I’ve shipped
- [2023–25]Mumbai, India · Jan 2023 — Feb 2025
Founding Engineer / Delivo
Founding engineer behind Delivo's logistics platform for international shipping — owned the stack end to end and turned messy, regulation-heavy operations into software a team could run their whole day on.
- Designed the platform architecture and core operational workflows from zero.
- Built the client and warehouse dashboards that ran daily shipping operations.
- Integrated third-party systems and kept everything compliant with international shipping regulations.
- Architecture
- Dashboards
- Integrations
- Logistics
- [2025]Bengaluru, India · May 2025 — Jul 2025
Software Engineer / Tradyon
Shipped end-to-end features for Tradyon's cross-platform AI chatbot — a Next.js web app and a React Native mobile app — improving its UX and reliability on both with a fast iteration cycle.
- Built agentic workflows in Dify that orchestrated LLM calls against BigQuery-backed global trade data.
- Enabled rich responses with text, charts and graphs by wiring workflows into the app's data layer.
- Shipped production features and fixes across web and mobile without sacrificing code quality.
- Next.js
- React Native
- Dify
- BigQuery
- LLM
04 / SELECTED WORK
Things I’ve built
01
Reverse Engineering/eClinicalWorks/2025
EHR Automation
Turning a closed, UI-only EHR into a programmable API.
eClinicalWorks ships no public API — every request is locked behind a custom encryption layer with no docs and no shortcuts. I captured live traffic, reverse-engineered the signing flow, and rebuilt payload encryption from scratch to talk the platform's native protocol without a browser in sight.
- Reconstructed the request signing and payload encryption flow purely from intercepted traffic.
- Built a clean API wrapper that speaks the platform’s native protocol, with no browser and no UI scripting.
- Exposed programmatic patient creation and appointment scheduling as a headless integration layer.
UI-free patient creation and scheduling
Payload CryptoTraffic AnalysisAPI WrapperNode.js
02
RPA / Anti-Queue/BookMyShow/2023
High-Concurrency Ticketing
Beating a million-person queue.
Events like Coldplay and the Cricket World Cup drop over a million users into Queue-IT in the same second. I built an RPA fleet of 50 parallel sessions — each self-logging with request timing tuned to hold a position near the very front.
- Ran 50 concurrent Firefox sessions with isolated profiles from a single controller.
- Cleared email and OTP verification across every session at once with an IMAP auto-login pipeline.
- Built custom Queue-IT bypass logic, tuning request timing to hold sub-500 positions against 1M+ users.
- Tracked live queue progression and seat availability across all sessions from one central monitor.
Sub-500 queue positions against 1M+ users
RPAIMAPQueue-IT BypassConcurrencyMonitoring
03
Automation Suite/Myntra · Flipkart/2023
E-commerce Automation
An automation factory for flash-sale retail.
A full operations suite for high-volume retail on Myntra and Flipkart — account generation, real-time stock monitors, and bulk checkouts firing the instant items dropped. The executor was request-driven, not browser-based, holding ~2s COD latency even at 500+ concurrency, all serverless on GCP Cloud Run.
- Generated 500+ accounts with a central dashboard for accounts, orders and delivery codes.
- Ran restock and price monitors that triggered an instant, request-driven bulk checkout near two seconds.
- Automated card payments with 3DS OTP capture and autofill through a companion app.
- Deployed on GCP Cloud Run to scale elastically with demand spikes.
Roughly 2s bulk checkout at 500+ concurrency
GCP Cloud RunRequest EngineDashboard3DS / OTP
04
On-chain / Low-latency/Solana + EVM/2024
Real-Time Copy Trading Bot
Mirroring on-chain trades inside a single block.
A real-time copy-trading engine across Solana and EVM chains — Ethereum, Base, and beyond. It watches target wallets over RPC, decodes swap transactions the moment they land, and mirrors them across multiple copier wallets with per-wallet allocation, fast enough to land within the next block.
- Monitored live on-chain activity across Solana and EVM through RPC nodes.
- Decoded swap input data to reconstruct each target trade’s exact intent.
- Mapped many wallets to many copiers with configurable per-wallet allocation.
- Executed inside the next block to keep slippage close to the source trade.
Trade mirroring within the next block
SolanaEVMRPC NodesSwap DecodingWeb3
05 / SKILLS
SKILLS
tools & technologies
RPA, Automation & RE
- RPA / Bot Frameworks
- API / Android Reverse Engineering
- Puppeteer
- Appium
- SSL Proxying
- Burp Suite
- Frida
- Dify
Frontend
- React
- Next.js
- TypeScript
- Tailwind
- React Native
Backend & DB
- Node.js
- Python
- PHP
- PostgreSQL
- MongoDB
Cloud & Infra
- GCP · Compute · Cloud Run
- AWS · ECS · Lambda
- Docker
- CI / CD Pipelines
- Nginx · Reverse Proxy
- Linux · VPS Ops