Barcode scanner that analyzes the nutritional composition of food products.
Senior iOS Engineer · Tech Lead · Freelance
16 years building native Apple apps that hold up in production.
Software engineer since 2010 — developer, then Tech Lead, then iOS Manager. I have led up to 3 teams of 5 to 10 engineers on high-traffic apps (Le Figaro, Bankin', SeLoger, Somfy TaHoma) and I now build AI-assisted agents and developer tooling. I also build custom websites — showcase sites, e-commerce — for small and medium businesses.
4.5/5average App Store rating
Lead 3teams of 5 to 10 engineers
16+years of Apple experience
3teams managed (France, Ukraine, Poland)
99.9 %crash-free users at Bankin'
40 Mmonthly views — Le Figaro brand, all platforms
Apps shipped for
Le FigaroBankin'SeLogerSomfy TaHomaModuloTechNestlé EuropeTéléramaPagesJaunesBrandtAtlantic
Three hats
Developer, Tech Lead, agent architect.
Depending on what you need, I write the code, I lead the team writing it, or I build the AI tooling that speeds it up. Often all three on the same engagement.
iOS engineering
Swift, SwiftUI, UIKit, Objective-C. SOLID, Clean Architecture, MVVM-C, unit tests and Bitrise CI/CD.
Agentic code & AI
AI-assisted agents and tooling: Claude, Hermes, MCP servers, prompt and loop engineering, multi-agent orchestration.
Lead & management
Up to 7 developers, hiring, continuous training, code reviews and cross-team best practices. Agile Scrum / Kanban.
Where to find me
Book me, check me out, read my code.
Malt/romainmullot
The most direct way to start an engagement: day rate, availability and secure contracting in a few clicks.
View my Malt profile
LinkedIn/romain-mullot
Fifteen years of detailed career history and public recommendations from my former CTOs, leads and clients — all verifiable.
Read the recommendations
GitHub/rmullot
FoodScanner
LifeGame
senscritique-assistant
Browse the repositories
An ad or script blocker is preventing the GitHub badges above from displaying.
Swift implementation of Conway's Game of Life, with interactive rendering and simulation.
Tampermonkey script that simplifies and speeds up creating entries on SensCritique.
Frequently asked
What people ask before we start.
Where do you work?
Based in Neuilly-Plaisance (93360), I work on-site anywhere in the Île-de-France region and fully remotely with no geographic limit.
Which technologies do you use?
Native Apple only: Swift, SwiftUI, UIKit, Objective-C, Combine, RxSwift, async/await and Bluetooth BLE, with SOLID / Clean Architecture / MVVM-C designs and Bitrise and Firebase CI/CD pipelines.
Do you work with AI and agents?
Yes. I design AI-assisted agents and developer tooling: Claude, Hermes, MCP servers, prompt and loop engineering, multi-agent orchestration, skill development and token-consumption tuning.
Do you have management experience?
Yes. As Tech Lead then iOS Manager I led up to 3 teams of 5 to 10 engineers split between France, Ukraine and Poland: hiring, continuous training, code reviews and cross-team best practices, in Agile Scrum and Kanban.
How does an engagement start?
A first 30-minute conversation with no strings attached, then a written scoping note covering scope, technical risks, effort estimate and timeline.
Got an iOS project in mind?
Let's talk it through. A 30-minute no-strings first conversation to frame the need, the effort and the timeline.