AI application engineering

AI applications built with evaluation, retrieval, and production reliability.

I apply senior product engineering discipline to LLM systems: explicit failure states, reproducible evaluation, grounded retrieval, typed APIs, and production infrastructure across mobile, web, and backend.

60/60receipt, total, and date checks
69labelled retrieval queries
4retrieval strategies evaluated
80%branch coverage gate

Relevant capabilities

From model boundary to production path.

Tools are grouped by the systems they support, with project evidence taking priority over keyword volume.

AI applications & backend

  • Python
  • FastAPI
  • Pydantic
  • Structured outputs
  • RAG
  • PostgreSQL
  • pgvector
  • AWS

Reliability, evaluation & delivery

  • pytest
  • XCTest
  • CI/CD
  • GitHub Actions
  • Prompt A/B tests
  • Recall@k & MRR
  • Latency & cost tracking
  • Production observability

Web, cloud & product systems

  • TypeScript
  • React
  • Next.js
  • AppSync
  • Lambda
  • DynamoDB
  • OpenSearch
  • Cloudflare Workers

Professional experience

A senior foundation for AI product work.

The AI specialization sits on top of years spent shipping, debugging, measuring, and leading production software.

08/2025 — Present

Product Engineer — AI Applications

Sellou · AI Product Studio

United States · Remote

  • Built Spookling's iOS and web apps for AI chat, calendar workflows, and browser-based coding.
  • Integrated SSE streaming and connected LLM tool calls to native EventKit calendar actions.
  • Built workspace and direct-message APIs with AppSync, Lambda, DynamoDB, and OpenSearch.

02/2025 — 08/2025

Senior iOS Engineer / iOS Tech Lead

Sellou · Consumer App Studio

United States · Remote

  • Progressed to leading the iOS team and introduced CI/CD workflows that cut release cycle time by 50%.
  • Cut playback startup by 40% with AVKit/HLS and initial download size by 20% with On-Demand Resources.

02/2024 — 02/2025

iOS Team Lead

Iomob · B2B Mobility-as-a-Service Platform

Barcelona, Spain · Remote

  • Led five iOS engineers delivering LNER and BrightBike while sustaining crash-free delivery above 99.9%.
  • Added Stripe tokenization to LNER, cutting checkout below eight seconds and trip-planning latency by 35%.

02/2021 — 02/2024

iOS Engineer

Iomob · B2B Mobility-as-a-Service Platform

Barcelona, Spain · Remote

  • Built the mobility SDK used in Ford and Renfe integrations, reducing integration time from weeks to under two days.
  • Normalized data from more than 10 providers and raised core SDK test coverage above 90%.

Roles and freelance projects

Building an AI product or looking for help with an AI project?

I’m open to relevant engineering roles and selected freelance projects. Based in Egypt and available for remote work or relocation, I’d be glad to hear what you’re working on.