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01 / StartXP 0%
Play mode

My CV, as a game

Same facts as the CV, more buttons. Pick a stage, try the terminal, or unlock the side quests from the trophy in the top bar.

01 / Player

Player 1 has entered the game

10+ years across five teams. Every number here comes from my CV or GitHub.

Ahmed MamdouhLV 10
Player 1Ahmed MamdouhSenior full-stack · AI engineer
Online · open to co-op missions
Season 2026Oct · 77%
Years
10+
Users served
2.1M+
Concurrent
100K+
Team led
7+
Loadout
Real-time
100K+

Concurrent device connections

AI
MCP

Agent + tool server in production

UptimeRobot
2.1M+

Users served

Microservices
−40%

p95 latency

02 / Level select

Choose a stage

Every project opens as a case study with the architecture behind it, and some have a demo you can play.

All work
Real-time device platform screenshot
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
Enter case studyPlay demo
↑↓ select stage · ↵ enter
03 / Achievements

Achievements unlocked

Eight from real work. The ninth is the project we do together.

Legendary100K+ concurrent connections

A real-time device platform on NestJS and Socket.io.

Current role
Legendary2.1M+ users served

UptimeRobot monitoring SaaS.

Itrinity
EpicMCP server in production

Gives LLM clients controlled access to internal systems.

Current role
EpicRAG pipelines on AWS

Retrieval over embeddings, with eval harnesses.

Current role
Legendary−40% p95 latency

After splitting a monolith into NestJS services.

Current role
Rare~45% faster endpoints

Redis caching, N+1 cleanup, indexed queries.

Technocloud
Rare7+ engineers led

Code reviews, design docs, sprint planning, hiring.

2 teams
Rare5,559 contributions

On GitHub in the last 12 months, 268 active days.

GitHub
Locked Your project

Unlocks when we ship something together.

04 / Skill tree

Every skill has a receipt

Full-stack coreTypeScript · SQL · Python
Backend4/4 unlocked
  1. Node.js · NestJSSweepSouth, UptimeRobot, current role
  2. GraphQLSchema-first APIs, −35% overhead
  3. Real-time100K+ concurrent sockets
  4. Laravel · PHPZerocash, Schoolver
Frontend4/4 unlocked
  1. React · Next.jsMall of Arabia, xerk.io
  2. Vue · NuxtSweepSouth, Schoolver LMS
  3. AngularSweepSouth, current role
  4. TailwindEvery recent UI
AI / LLM4/4 unlocked
  1. AgentsAnthropic + OpenAI, tool use
  2. MCP serversSecure tools for LLMs
  3. RAGQdrant, embeddings, evals
  4. Fine-tuningSageMaker, Bedrock
Cloud & Ops4/4 unlocked
  1. AWSEKS, ECS, Lambda, S3
  2. KubernetesMicroservices on EKS
  3. CI/CDJenkins, GitHub Actions
  4. DataPostgres, Mongo, Redis
05 / Quest log

Main story

Full CV
Active questFeb 2023 — Now

Netsync Network Solutions · Senior Software Engineer

Remote, US

IT solutions provider for enterprise clients. Product details are under NDA.

  • Built a real-time device platform that holds more than 100,000 concurrent connections
  • Shipped a production AI agent and an MCP server on the Anthropic and OpenAI APIs
  • Lead a team of 7+ engineers and own CI/CD and deploys on AWS
Loot100K+ concurrentp95 −40%millions of events/day
CompletedApr 2022 — Feb 2023

SweepSouth · Senior Software Engineer

Remote, South Africa

Africa's largest on-demand home services platform (South Africa, Kenya, Nigeria and Egypt as FilKhedma).

  • Built and scaled Node.js and NestJS services serving 100k+ active customers
  • Shipped mobile-first booking flows in Angular and Vue.js
  • Raised booking-flow throughput and cut API tail latency with query tuning, caching and async workflows
Loot100k+ active customers
CompletedAug 2020 — Apr 2022

Technocloud · Tech Lead

Cairo, Egypt

Fintech and e-commerce products: Zerocash (e-wallet), Rojetah (healthcare), Dealmart (e-commerce), Trjim.

  • Architected the Zerocash e-wallet transaction system with audit trails and reconciliation
  • Shipped versioned REST APIs in Node.js and Laravel, backed by contract tests
  • Made critical endpoints ~45% faster with Redis caching, N+1 cleanup and indexed queries
  • Led 7+ engineers in Scrum
Loot~45% faster endpointsthousands of payments/day
CompletedOct 2019 — Aug 2020

Itrinity · UptimeRobot · Senior Software Engineer

Remote, Slovakia

Website monitoring SaaS with 2.1M+ users.

  • Built high-throughput Node.js and NestJS services running millions of website checks a day
  • Designed schema-first GraphQL APIs that cut client network overhead by ~35%
  • Queue-based alerting pipeline with retry, deduplication and SLA tracking on AWS ECS and Lambda
Loot2.1M+ users−35% network overhead
CompletedMar 2017 — Oct 2019

Schoolver · Software Engineer

Cairo, Egypt

School Management System and Learning Management System.

  • Built the LMS end to end (Vue.js frontend, REST APIs) for thousands of students and teachers
  • Multi-tenancy across schools with Socket.io chat and notifications
Lootthousands of students
06 / Console

Prefer the command line?

Type help. There might be a hidden command.

guest@xerk.io: ~type help
xerk.os v2.0 — 10+ years loaded
type `help` for commands
❯
Ask my CVAI answers from my real work, with sources
Beta

Ask me anything about Ahmed's projects, stack or availability.

07 / Activity

Still shipping, every week

xerk5,559 contributions in the last year
268 active days20 day best streak48 public reposLessMore