Product Engineering
End-to-end features across web and mobile with Next.js, React Native and Node. I take a feature from architecture and data modeling all the way to the last bug fix before release.
Full-Stack◆RPA & Automation◆Reverse Engineering
Uday PratapSingh Parihar
I build production features and ruthless automation: LLM-powered products, agentic workflows, and tools that thrive where the documentation runs out.
Indore, India—
01 / About
A bit about me
I’m a full-stack developer drawn to the hard, undocumented edges of software. My work splits between two things: shipping clean product features people actually use, and building automation that runs at a scale and reliability the original system was never designed to expect.
I’ve been a founding engineer owning an entire logistics platform, a software engineer wiring LLM agents into a production chatbot, and a freelancer reverse-engineering encrypted APIs, bypassing industrial queue systems, and orchestrating hundreds of concurrent sessions without things falling over.
What ties it together is a stubborn curiosity about how things actually work under the hood, and the patience to turn that understanding into something dependable. I’m looking for a team that ships fast and isn’t afraid of the messy problems.
0
Products shipped end to end
0
Platforms reverse‑engineered
0
Users out-queued in a single drop
0
Years building production systems
02 / What I do
Four things I'm good at
Automation & RPA
High-concurrency systems that generate accounts, monitor live state, and act in real time. Built to stay fast and reliable under hundreds of parallel sessions and sudden demand spikes.
Reverse Engineering
API and Android reverse engineering: traffic interception, payload decryption and protocol reconstruction. I build integrations where no public API exists and the only documentation is the wire.
LLM & Agentic Systems
Agentic workflows that orchestrate LLMs against real data sources and return genuinely useful output: text, charts and structured responses wired into the rest of the product.
03 / Experience
Where I've shipped
Jan 2023 to Feb 2025
Founding Engineer
Delivo · Mumbai, India
I was the founding engineer behind Delivo’s logistics platform for international shipping. I owned the stack from 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
May 2025 to Jul 2025
Software Engineer
Tradyon · Bengaluru, India
I 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 broken & 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/2024 to 2025
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 / Toolkit
The stack I reach for
A
RPA, Automation & RE
- RPA / Bot Frameworks
- API / Android Reverse Engineering
- Puppeteer
- Appium
- SSL Proxying
- Burp Suite
- Frida
- Dify
B
Frontend
- React
- Next.js
- TypeScript
- Tailwind
- React Native
C
Backend & DB
- Node.js
- Python
- PHP
- PostgreSQL
- MongoDB
D
Cloud & Infra
- GCP · Compute · Cloud Run
- AWS · ECS · Lambda
- Docker
- CI / CD Pipelines
- Nginx · Reverse Proxy
- Linux · VPS Ops