Gilles Crofils

Gilles Crofils

Hands-On Chief Technology Officer

Based in Western Europe, I'm a tech enthusiast with a track record of successfully leading digital projects for both local and global companies.1974 Birth.
1984 Delved into coding.
1999 Failed my First Startup in Science Popularization.
2010 Co-founded an IT Services Company in Paris/Beijing.
2017 Led a Transformation Plan for SwitchUp in Berlin.
May 2025 Eager to Build the Next Milestone Together with You.

SwiftUI For Cross-Platform Development

Abstract:

SwiftUI is a game-changing framework for cross-platform development, offering a unified development experience for Apple platforms with a concise syntax. It simplifies iOS development compared to traditional methods and provides consistency between macOS and iOS applications. Technology leaders, such as Chief Technology Officers, play a vital role in adopting SwiftUI within organizations and can benefit from its unified development experience, improved productivity, and modern, intuitive UIs. Directors of Technologies and Engineering are crucial in supporting the transition to SwiftUI, fostering innovation, and optimizing development processes. Ultimately, SwiftUI empowers technology and engineering leaders to make informed decisions and maintain a competitive edge in the technology landscape.

Create an abstract image that signifies the transformative impact of a new coding framework in cross-platform development, emphasizing its unifying effect across all platforms of a particular tech company. The predominance of blue hues in the image should depict the evolution of this technology. The image should feature a bridge, connecting two unique landscapes. The first landscape symbolizes the conventional, divided development environment, illustrated by intricate structures and a disordered environment, corresponding to the challenges of historical coding methods. The other landscape represents the smooth, contemporary, and unified world brought forth by the new framework. It's characterized by sleek shapes, organized elements, and peaceful surroundings, mirroring the ease, productivity, and consistency it introduces to software development. Inclusion of symbolic imagery, such as non-specific technology leaders like heads of technology and tech directors, guiding their teams over the bridge, underlines their vital role in facilitating the transition to the new framework, promoting novelty, and streamlining processes to preserve a competitive advantage in the tech industry.
SwiftUI: A Game-Changer for Cross-Platform Development in Technology and Engineering

The SwiftUI Framework: A Powerful Tool for Modern Technology Leaders

As a Chief Technology Officer, I have witnessed the evolution of cross-platform development frameworks, and I can confidently say that SwiftUI is a game-changer. Introduced by Apple, SwiftUI is a revolutionary framework that enables developers to build user interfaces (UIs) for various Apple platforms, including iOS, macOS, watchOS, and tvOS, using a single codebase. Its declarative syntax, combined with the power of the Swift language, leads to an intuitive and efficient development experience.

iOS Development: The Traditional Approach

Historically, developing native iOS applications required extensive knowledge of Objective-C or Swift, along with the UIKit framework. This approach forced developers to write platform-specific code, resulting in increased development time and effort. Fortunately, SwiftUI has emerged as a powerful alternative, enabling developers to create UIs with a more straightforward and concise syntax.

macOS Development: Breaking Down Barriers

SwiftUI has also had a significant impact on macOS development. Before its introduction, developers had to rely on AppKit, the native macOS UI framework. This dependency often led to an inconsistent user experience between macOS and iOS applications. SwiftUI solves this problem by providing a unified framework for both platforms, resulting in a consistent look and feel for Apple applications.

The Role of Directors of Technologies and Engineering in SwiftUI Adoption

Directors of Technologies and Engineering play a crucial role in facilitating the adoption of SwiftUI within their organizations. By providing training and resources, they enable their teams to leverage the benefits of this powerful framework. This support is essential for a successful transition from traditional cross-platform development approaches to the modern, unified SwiftUI framework.

Director of Technologies: Fostering Innovation

The Director of Technologies should focus on fostering a culture of innovation within their organization. By encouraging the exploration of new technologies like SwiftUI, they position their teams to capitalize on the benefits of cross-platform development and stay ahead of the competition.

Director of Engineering: Optimizing Development Processes

The Director of Engineering should work closely with their teams to optimize development processes around SwiftUI. This collaboration includes identifying best practices, streamlining workflows, and ensuring that the organization's codebase remains maintainable and scalable.

Empowering Chief Technology Officers with SwiftUI

As the leader of technology and engineering initiatives, the Chief Technology Officer (CTO) must make informed decisions about adopting new technologies. SwiftUI offers several benefits that make it an attractive choice for cross-platform development.

Unified Development Experience

SwiftUI's unified development experience enables CTOs to allocate resources more effectively across various platforms. By reducing the need for specialized platform-specific teams, organizations can save time and resources, ensuring a consistent user experience for their customers.

Improved Productivity

SwiftUI's declarative syntax leads to improved productivity, as developers can quickly create UIs with minimal code. This efficiency allows CTOs to expedite their product development cycles, delivering features and fixes to customers at a faster pace.

Modern, Intuitive UIs

SwiftUI facilitates the creation of modern, intuitive UIs that engage and delight users. CTOs that adopt SwiftUI can deliver visually appealing applications that cater to the evolving expectations of their customers.

In conclusion, SwiftUI is a powerful tool for cross-platform development that offers numerous benefits for technology and engineering leaders. By enabling a unified development experience, improving productivity, and facilitating the creation of modern, intuitive UIs, SwiftUI empowers CTOs to make informed decisions about their technology stack. With the support of Directors of Technologies and Engineering, organizations can successfully adopt SwiftUI and maintain a competitive edge in the ever-evolving technology landscape.

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25 Years in IT: A Journey of Expertise

2024-

My Own Adventures
(Lisbon/Remote)

AI Enthusiast & Explorer
As Head of My Own Adventures, I’ve delved into AI, not just as a hobby but as a full-blown quest. I’ve led ambitious personal projects, challenged the frontiers of my own curiosity, and explored the vast realms of machine learning. No deadlines or stress—just the occasional existential crisis about AI taking over the world.

2017 - 2023

SwitchUp
(Berlin/Remote)

Hands-On Chief Technology Officer
For this rapidly growing startup, established in 2014 and focused on developing a smart assistant for managing energy subscription plans, I led a transformative initiative to shift from a monolithic Rails application to a scalable, high-load architecture based on microservices.
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2010 - 2017

Second Bureau
(Beijing/Paris)

CTO / Managing Director Asia
I played a pivotal role as a CTO and Managing director of this IT Services company, where we specialized in assisting local, state-owned, and international companies in crafting and implementing their digital marketing strategies. I hired and managed a team of 17 engineers.
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SwitchUp Logo

SwitchUp
SwitchUp is dedicated to creating a smart assistant designed to oversee customer energy contracts, consistently searching the market for better offers.

In 2017, I joined the company to lead a transformation plan towards a scalable solution. Since then, the company has grown to manage 200,000 regular customers, with the capacity to optimize up to 30,000 plans each month.Role:
In my role as Hands-On CTO, I:
- Architected a future-proof microservices-based solution.
- Developed and championed a multi-year roadmap for tech development.
- Built and managed a high-performing engineering team.
- Contributed directly to maintaining and evolving the legacy system for optimal performance.
Challenges:
Balancing short-term needs with long-term vision was crucial for this rapidly scaling business. Resource constraints demanded strategic prioritization. Addressing urgent requirements like launching new collaborations quickly could compromise long-term architectural stability and scalability, potentially hindering future integration and codebase sustainability.
Technologies:
Proficient in Ruby (versions 2 and 3), Ruby on Rails (versions 4 to 7), AWS, Heroku, Redis, Tailwind CSS, JWT, and implementing microservices architectures.

Arik Meyer's Endorsement of Gilles Crofils
Second Bureau Logo

Second Bureau
Second Bureau was a French company that I founded with a partner experienced in the e-retail.
Rooted in agile methods, we assisted our clients in making or optimizing their internet presence - e-commerce, m-commerce and social marketing. Our multicultural teams located in Beijing and Paris supported French companies in their ventures into the Chinese market

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