> whoami

Rehber Moin

$ focus:

I build the infrastructure behind trade execution at BlackRock - platforms processing $5-10B/day in SWIFT transactions across $1T AUM. Apache Kafka, gRPC, Redis, Apache Ignite.

Author of RiptideKV (a Redis-compatible KV store from scratch in Rust). Currently teaching System Design at Scaler Academy.

Yes, I built my portfolio as a distributed system. No, I will not apologize.

GitHub LinkedIn

statusopen to conversations

locationGurugram, IN 🇮🇳

experience2+ years

caffeine level▓▓▓▓▓▓░░ 75%

currently

cat ~/.now

working on

Cachematrix platform at BlackRock - $5-10B/day SWIFT

building

RiptideKV - Redis-compatible KV store from scratch (Rust)

teaching

System Design (LLD, HLD) at Scaler Academy

obsessed with

Exactly-once semantics in Kafka

listening to

lo-fi beats to deploy to

thinking about

Cache-aside vs read-through at scale

r3hbr@cluster ~ neofetchview dotfiles →


 ╔══╗
 ║R3║
 ║HB║
 ║R ║
 ╚══╝

r3hbr@infrastructure

─────────────────────

role ~ Backend Platform Engineer

company ~ BlackRock

stack ~ Java · Rust · TypeScript

infra ~ Kafka · Redis · gRPC · Ignite

editor ~ Neovim (btw)

shell ~ zsh + starship

os ~ macOS · Arch Linux

// latest

SHIPproject · actively shipping

RiptideKV v5.0 - Redis-compatible KV store (Rust)

POSTblog · technical writing

Java Internals & Distributed Systems

PUSHwork · production

feat: exactly-once Kafka pipelines at BlackRock

┌───────────────────┐
│                   │
│  systems are just │
│  people problems  │
│  in disguise      │
│                   │
│           -  r3hbr  │
└───────────────────┘

System Topology

$kubectl get topology / r3hbr-infrastructure│nodes: 9edges: 9all healthy

click node to navigate • drag to pan • scroll to zoom

// philosophy.yml

Systems over features

I don't build apps. I build the infrastructure that apps depend on. The best code I write is the code you'll never see - until it stops running.

Fail fast, recover faster

Every system fails. The question is whether you built it to crash gracefully at 3am without waking anyone up. That's the actual engineering.

Complexity is debt

If I can't explain the architecture on a napkin, it's wrong. The hardest engineering is making complicated things simple - not the other way around.