Raj Gahoi. I turn complex bugs into obedient code. Full-stack builder. Cache whisperer. Zero-drift fanatic.

See the work Live SaaS: TrustNest ↗ Hire on Upwork
live production saas
TrustNest Marketplace ↗
cluster slots tamed
16,384 shards
dependency diet
lean & mean
need something built?
Hire me on Upwork ↗

一About

Code that runs fast, breaks never, and doesn't need a 400MB node_modules diet.

temperature

Most developers treat low-level memory and distributed caching like haunted houses. I treat them like playgrounds. Based in Greater Noida, I build end-to-end web apps and scalable backends that actually stay up when real traffic storms in.

I have zero patience for fragile wrappers, silent byte truncation, or slide-deck architects who don't touch code. If you have an ugly race condition, an overloaded cluster, or need a clean full-stack product built from scratch — hand me the keyboard.

When I'm not pushing PRs into Linux Foundation / Valkey or Expensify, you'll find me locked in a staring contest with stubborn algorithms. I don't stop until the tests are green and the code is bulletproof.

systems
  • Valkey / Redis Clusters
  • CRC16 Hash Sharding
  • Binary Protocols
  • GLIDE 2.4 Driver
full-stack
  • React 19 & Next.js
  • React Native & Expo
  • TypeScript (Strict)
  • Node.js (Async I/O)
  • Tailwind CSS
reliability
  • Jest CI Testing
  • GitHub Actions Matrix
  • Docker
  • DCO Compliance
肖像 · raj.exe online
Gr. Noida, IN train/loss0.000
名刺 raj --infov2026
location
India (UTC+5:30)
focus
Distributed Caching & Full-Stack
ecosystem
Linux Foundation / Valkey
status
● Available for contracts
⚡ The 30-Second Dossier Available for Contracts

"Why hire an agency of 5 when you can hire one engineer who refuses to produce bugs?"

Here is the deal: I don't write fragile code that only works on localhost, and I don't vanish halfway through a sprint. Whether you are building an ambitious React Native mobile product, untangling a congested backend with 16K memory shards, or shipping a Next.js MVP before your competitors wake up — I deliver fast, battle-tested software.

0.00ms Tolerance for Sloppy Bugs
Full Stack Kernel C++ to Mobile React Native
100% Green CI Automated Test Passes
Direct Hires Pre-configured Upwork Contract
🚀

Web & Mobile That Flies

React 19, Next.js, and React Native apps that feel buttery smooth at 60fps. No sluggish spinners, no jank, and offline sync so sturdy your users won't notice if their subway enters a tunnel.

🔥

Cache & Concurrency Wizardry

Taming 16,384 cluster shards, bitwise byte streams, and microsecond packet spikes in Valkey & Rust. When a million requests hit at once, my backend doesn't sweat — it sips tea.

🎯

Bug Assassin & Zero Regressions

I despise silent crashes and "works on my machine" excuses. I write ruthless Jest test suites and deterministic safeguards so your production releases never wake you up at 3 AM.

Highlights

二Experience

Where it runs in production.

The evolutionary journey: from algorithmic rigor to enterprise frontend scale and distributed cloud infrastructure.

  1. Present

    Linux Foundation / Valkey Architecture

    Core Contributor · Distributed Systems & Low-Latency Memory

    Working on the open-source Redis successor under the Linux Foundation. Architected 16K-slot CRC16 XMODEM cluster routing heatmaps and engineered non-destructive zero-copy byte parsers for large-scale nested KV data trees.

    • Engineered the 16,384-slot CRC16 XMODEM cluster heatmap engine for Valkey Big Keys in cluster mode.
    • Eliminated memory buffer truncation in complex KV trees by designing non-destructive binary byte parsers.
    • Contributed wire protocol enhancements to Valkey GLIDE Rust client (PR #7373).
    16,384cluster slots
    0.00%data truncation
    100%CI green rate
  2. 2026

    Expensify Platform

    Engineering Bounty Partner · Enterprise React Native & Onyx Store

    Dove into one of GitHub's largest React Native codebases ($100M+ ARR scale). Resolved multi-screen transaction carousel race conditions, keyboard navigation focus traps, and stale Onyx asynchronous store synchronizations.

    Jestregression safety
    Multi-OSiOS, Android, Web
    ZeroUI jank
  3. Foundation

    Algorithmic Problem Solving & Data Structures

    Competitive Programmer & Core Computer Science Practitioner

    Built mathematical rigor and optimal time-space intuition solving complex graph theory, dynamic programming, and tree traversal challenges on LeetCode (@raj_gahoi). Every backend system I design inherits this exact focus on Big-O efficiency.

    DSAfirst principles
    O(1)slot lookup
    C++ / TSidiomatic patterns

三WorkCurated

Rebuilt from first principles. No black boxes I didn't open.

Three production systems, end to end. A live trust-first classifieds SaaS, a 16K-slot cluster heatmap, and a zero-copy binary parser.

Flagship Full-Stack SaaS · Production Release

LIVE PRODUCTION

TrustNest — Trust-First Marketplace

A production classifieds & verified housing marketplace platform built with React 19, TypeScript, and Tailwind CSS v4.

Engineered end-to-end with geographic routing across 7 metropolitan hubs, 143 verified listings, an algorithmic trust-scoring calculation engine, responsive card layouts, and an instant reactive filter index.

143
verified listings
seeded & mapped
7
metropolitan hubs
supported
100%
React 19 & TS
type safety
Launch Live Demo ↗ trustnest repository →
trustnest · trust-scoring engine active 
$ curl -I https://rajgahoi.github.io/trustnest/
HTTP/2 200 OK · React 19 · Vite 8.3 · Tailwind v4
> Trust Score: 94/100 (Tier 1 Verified Landlord)
> Listings: 143 live properties across 7 cities

Distributed Systems · Linux Foundation

Pull Request #579

Valkey Cluster Heatmap

A 16,384-slot CRC16 hash tag distribution engine for Valkey Big Keys in cluster topologies.

Continuous route telemetry and GLIDE 2.4 client routing. Under heavy loads it maps hot keys without locking active worker event loops.

16,384
slots mapped
in real time
0.00%
slot collision
tolerance
100%
CI verification
pass rate
GitHub PR #579 ↗ valkey-admin repository →
slot pool · 64 blocks live
shards 3 slots 16,384/16,384 collisions 0

CRC16 XMODEM routing maps keys into deterministic cluster shards.

$ valkey-cli --cluster check 127.0.0.1:7000
100% tests passed, 0 failed out of 16,384 slots
$ valkey-admin --route bigkeys --format heatmap
eval status 3 masters · 0 collisions

Byte Buffer Protocols · Memory Safety

Pull Request #578

Non-Destructive Binary Parser

Eliminated collection key truncation across nested Hash, List, Set, and Zset storage structures.

Implemented non-destructive binary byte-level detection and zero-copy binary streaming, preserving raw payload fidelity for arbitrary memory blocks.

0
byte truncation
errors
Zero
redundant
memory copies
4
nested collection
types supported
GitHub PR #578 ↗
buffer protocol · zero-copy node:buffer 
const isUtf8 = Buffer.isUtf8(rawBytes);
if (!isUtf8) {
  return sliceZeroCopyHex(rawBytes, 0, 64);
} // 0% data corruption across nested structures
100% CI Green Rate · 17 Pull Requests shipped across Valkey Admin, GLIDE & Expensify
Mon Wed Fri
Less More activity

Also built

All repositories ↗
  • Expensify Nav Core Can multi-screen expense carousels remain atomic during split-transaction deletions? Issue #104307 inspect ↗
  • Cluster Telemetry How to stream real-time INFO metrics from heterogeneous replica shards? PR #577 inspect ↗

四Writing

Dispatches from the engine room.

Technical postmortems, cluster routing proofs, memory safety models, and distributed state machines.

16,384Hash Slots Modeled 0.00%Buffer Drift 100%DCO / CI Verified Rust & TSProduction Stacks

五Interactive Lab

Interactive systems toys.

Live sandboxes exploring deterministic hashing algorithms, zero-copy buffer slicing, and cluster latency distributions.

CRC16 Hash Slot Router:
Calculated Slot: 13,421 / 16,384
Cluster Node: shard-03-master

CRC16 Shard Calculator

Type any key or hashtag {tag} to compute the real-time Valkey/Redis 16,384 slot allocation.

Zero-Copy Hex Byte Stream:
0x56 0x61 0x6C 0x6B 0x65 0x79 0x20 0x31 0x36 0x4B 0x20 0x4B 0x56 0x20 0x53 0x6C 0x6F 0x74 0x73
UTF-8 Status: VALID Fidelity: 100%

Zero-Copy Stream Analyzer

Interactive binary buffer inspection demonstrating zero data corruption across nested structures.

Multi-Region Cluster Ping Simulator:
p50: 0.42ms p99: 1.18ms jitter: 0.03ms
Routing: Tokyo (NRT) ↔ Singapore (SIN) ↔ Mumbai (BOM)

Real-Time Cluster Latency & Jitter Monitor

Live sliding window visualizing zero-drift packet routing across 16,384 memory slots under synthetic burst load.

Deterministic Invariants:
Formal Spec
0.88
Empirical CI
0.64
Drift Tolerance
0.00

Deterministic Sampling

Live probability weights enforcing zero state drift across enterprise client-server sync.

問Retrieval Terminal

Deterministic BM25 Retrieval.

Extractive question answering over this portfolio's live DOM. No speculative hallucinations, no external LLM latency — the math decides when to answer and when to refuse.

ask >

四Contact

Got a hard problem, a big vision, or an app on fire? Let's build.

Skip the recruiter small talk. Direct Upwork contracts are pre-configured, or shoot an email straight to my inbox.

Initiate Contract on Upwork gahoiraj01@gmail.com
鯉 · tap the water to feed them The koi surface when you tap the pond. I get to work when you send an offer.