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Case studies: real-time platforms, AI agents and SaaS

Every stage is a real project, with the hardest problem (the boss), the architecture and the numbers. Pick one.

Stage 1-1 · 2023 — Now

Real-time device platform

A device management backend that keeps 100,000+ devices connected at once. The product is under NDA, so this page covers the engineering, not the product.

Boss100,000 sockets that can't drop

NestJSSocket.ioMongoDBGraphQLDocker

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Interactive demoVideo

1-1 · 2023 — Now

Real-time device platform

A device management backend that keeps 100,000+ devices connected at once. The product is under NDA, so this page covers the engineering, not the product.

NestJSSocket.ioMongoDBGraphQL

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Interactive demoVideo

1-2 · 2024 — NowAI

AI agent + MCP server

A production AI agent with tool use and guardrails, plus an MCP server that lets LLM clients query and act on internal systems under strict rules.

LangChainAnthropic APIOpenAI APIMCP

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Zerocash screenshot

2-1 · 2020 — 2022

Zerocash

E-wallet transaction system clearing thousands of payments a day, with audit trails and reconciliation.

Node.jsLaravelVue.jsMySQL

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2-2 · 2022 — 2023

SweepSouth

Africa's largest on-demand home-services platform: NestJS services and booking flows for 100k+ active customers.

NestJSTypeScriptMongoDBAngular

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3-1 · 2019 — 2020

UptimeRobot

Website monitoring for 2.1M+ users: Node.js services running millions of checks a day and a schema-first GraphQL API.

NestJSTypeScriptGraphQLAWS ECS

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Mall of Arabia screenshot

Mall of Arabia

Website for Egypt's largest mall.

Next.jsNuxt 3Tailwind CSS

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