# Mohamed Derkaoui - Professional Profile

Canonical website: https://mderkaoui.dev/

## Professional summary

Mohamed Derkaoui is a Senior Software Engineer working across iOS and applied AI. He is based in Paris, France. His main expertise is native iOS product engineering with Swift, SwiftUI, UIKit, and Objective-C. He also develops and improves AI engineering tools, LLM workflows, and automation, alongside experience in backend development, real-time systems, software architecture, product delivery, technical leadership, and engineering management.

## Current role

### Trainline - Senior iOS Engineer

March 2022 to present

Mohamed works on the Trainline iOS app, used by more than 10 million daily travellers across Europe.

Selected work and responsibilities:

- Reduced the engineering work required to support a new supplier by 80%
- Modernised critical product flows with SwiftUI and hexagonal architecture
- Helped develop and improve AI tools, workflows, and automations used in day-to-day engineering work
- Worked across architecture, product delivery, observability, testing, and experimentation
- Led two engineering teams during an interim engineering management period
- Collaborated with product, design, and engineering stakeholders

Official company website: https://www.thetrainline.com/

## Previous experience

### LALALAB - iOS Engineer

May 2020 to January 2022

- Worked on a mobile commerce product used by more than four million customers
- Redesigned checkout and payment flows, increasing conversion by 28%
- Built a reusable product-creation system for a growing catalogue
- Implemented Sign in with Apple, used by 40% of new sign-ups

Official company website: https://www.lalalab.com/

### Frianbiz - Software Engineer

April 2019 to May 2020

- Developed and maintained iOS and web products
- Built real-time communication for a live game chat system using Socket.IO
- Developed a custom dashboard for distributed connected devices
- Worked across mobile, backend-connected products, and product prototyping

Official company website: https://www.frianbiz.com/

## Skills

### iOS

- Swift
- SwiftUI
- UIKit
- Objective-C
- Xcode
- Tuist
- Fastlane

### Architecture and quality

- Hexagonal architecture
- MVVM
- Modular systems
- Unit testing
- Observability
- Continuous integration and delivery

### Applied AI and automation

- AI engineering tools
- LLM workflows
- Workflow automation
- AI-assisted software development
- Evaluation and iteration

### Product and backend engineering

- Backend development
- Real-time systems
- Socket.IO
- Firebase
- Payments
- A/B testing
- Performance optimisation

### Leadership

- Engineering management
- Technical direction
- Mentoring
- Hiring
- Cross-functional product delivery

## Education

- 2015-2018: Engineering degree in Computer Science, Hassania School of Public Works (EHTP)
- 2013-2015: Preparatory classes in Mathematics and Physics
- 2012-2013: Scientific Baccalaureate

## Languages

- Arabic: native
- French: bilingual
- English: fluent
- German: beginner

## Published writing

- [Unit Testing in Xcode: From 0 to 1](https://medium.com/frianbiz/unit-testing-in-xcode-from-0-to-1-8401020e1f95), 2020
- [Pixology: The New Frianbiz Adventure](https://medium.com/frianbiz/pixology-the-new-frianbiz-adventure-1e98d10e3e20), 2019
- [AI Unity Game for Dummies](https://medium.com/frianbiz/ai-unity-game-for-dummies-57fbd68360bc), 2019

## Contact and public profiles

- Website: https://mderkaoui.dev/
- Email: medder12@gmail.com
- LinkedIn: https://linkedin.com/in/m-derkaoui
- GitHub: https://github.com/MohamedDer
- Medium: https://medder.medium.com/