Mathieu Daumas

Senior iOS Software Engineer

Vienna, Austria
mathieu@daumas.dev | +33 6 58 82 30 16 | LinkedIn | daumas.dev

Date of birth: 13.08.1984 | Nationality: French (EU) | Full and unrestricted access to the Austrian and EU labour market

Professional Summary

Senior iOS engineer with over 7 years building and maintaining production apps in Swift and Objective-C. At Meister, worked across the MindMeister and MeisterTask iOS apps, built a planned third product as a module inside MeisterTask, owned the MeisterTask CI, and spent the final two months as the company's only iOS developer. Earlier, led iOS at a software agency and shipped 20+ apps to the App Store. Comfortable in large mixed UIKit/SwiftUI codebases using MVVM, async/await, Combine, Core Data and SQLite, writing unit and UI tests, and keeping fastlane and GitHub Actions pipelines running. Daily user of Claude Code, Cursor and Codex, and a strong cross-functional collaborator across Product, Design, Backend and QA.

Technical Skills

Languages & Frameworks: Swift, SwiftUI, UIKit, Objective-C, Combine, async/await, Core Data, SQLite, XCTest, XCUITest, Swift Package Manager

Architecture & Practices: MVVM, modular architecture, design patterns, unit & UI testing, code review, offline-first apps & custom sync

Tooling & CI: Xcode, Git, fastlane, GitHub Actions, App Store Connect

AI-Assisted Development: Claude Code, Cursor, Codex, ChatGPT, VS Code, Antigravity

Other: SQL (Transact-SQL), Kotlin (basic), Grails (basic)

Professional Experience

Senior iOS Developer | Meisterlabs GmbH

Apr 2022 - Jul 2025 | Vienna, Austria

• Worked on MindMeister iOS and MeisterTask iOS, two production apps used by MeisterLabs customers worldwide, starting on MindMeister and later moving to MeisterTask.
• Contributed to large mixed UIKit and SwiftUI codebases following MVVM with async/await and Combine, with newer product modules built SwiftUI-first.
• Worked on a new architecture effort after the company decided to fold a planned third product into the main apps instead of shipping it standalone.
• Built feature-based Swift Packages to introduce modularisation and isolate new product areas from the main app targets, and integrated a Kotlin Multiplatform package built by a colleague into the app's data flow.
• Handled offline-capable behaviour using Core Data, SQLite and custom synchronisation logic to keep local and remote data consistent.
• Took over CI ownership for MeisterTask iOS, maintaining the fastlane and GitHub Actions workflows, and wrote XCTest unit tests and XCUITest end-to-end tests for production features.
• Collaborated with Product, Design, Backend, QA and mobile teams, and for the final two months acted as the company's only iOS developer, keeping MeisterTask running solo.

Lead iOS Developer | Bleu 122

Jul 2016 - Nov 2020 | Toulouse, France

• Led the conception, development, deployment and maintenance of 20+ professional iOS apps for business clients.
• Owned the full iOS delivery lifecycle, from requirements and architecture through deployment, maintenance and client support.
• Built apps with Swift, Objective-C, UIKit, Core Data, SQLite and custom synchronisation logic, with reliability and offline behaviour in mind.
• Designed pragmatic architectures suited to each project's size, client needs and long-term maintainability.
• Mentored interns and junior developers through code reviews and day-to-day guidance.
• Contributed to Android and backend work when needed, using Kotlin, Android Studio and Grails.

Earlier Technical Experience

Infomil, EADS, Airbus, CEMES/Soitec | Toulouse, France | 2007-2016

• Set up and ran SQL Server databases and scripts (Transact-SQL, VBS) for the in-house backend software at Infomil.
• Led on-site IT support for an EADS research lab of 200+ users, and gave French and English support to Airbus employees across Europe.
• Wrote a Matlab program for scientific modelling at CEMES/Soitec.

Education

DUT Informatique de Gestion (Computer Science), IUT de Blagnac

Further university coursework in Computer Science, Mathematics, Physics and Chemistry at Université Toulouse III (Paul Sabatier).

Professional Development & Languages

German: A1 completed (BFI Wien), A2 in progress (ibis acam), Vienna, 2025-2026

Spoken languages: French (native), English (full professional), German (A2, learning), Spanish (basic)