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.

Kotlin Multiplatform Development

By

Hands-On Chief Technology Officer

Abstract:

Kotlin Multiplatform is a cutting-edge technology that enables developers to write a single codebase for multiple platforms, including iOS and Android, using the Kotlin programming language. It allows leveraging shared code while still utilizing platform-specific APIs, resulting in faster development times, reduced maintenance costs, and a more consistent user experience across multiple platforms. Kotlin Native, a key component, allows developers to compile Kotlin code to native binaries, eliminating the need for a virtual machine and providing better performance and compatibility with native development tools. Embracing Kotlin Multiplatform and cross-platform development methodologies is seen as a significant opportunity for technology and engineering executives to demonstrate innovation and strategic vision, reducing development costs and improving efficiency.

Imagine a cyberspace with abstract, interconnected islands floating against a tranquil, deep blue background. Each island stands as a metaphor for a different technological platform - one for mobile software with apple-like features, another for a green robot-inspired mobile system, and the third one for a common desktop environment. On these islands, translucent structures built from flowing strings of code, glowing gently, depict the unified interaction of shared codebases across the distinct platforms. High above, a glowing bridge, formed from elegant strands of abstract coding language, connects these islands, representing the effortless conversion of this code to a native language, eliminating the need for a virtual environment. Ethereal, light-blue wisps in the atmosphere depict reduced development costs and improved efficiency. This abstract representation exhibits the spirit of a versatile coding platform's role in promoting a unified but personalized user experience across diverse digital landscapes.
Embracing Kotlin Multiplatform for Cross-platform Mobile App Development: A Chief Technology Officer's Perspective

Kotlin Multiplatform: A Game-changer for Cross-platform Development

As a Chief Technology Officer, I've always been on the lookout for innovative technologies that can streamline our development processes, improve efficiency, and reduce costs. I recently came across Kotlin Multiplatform, an exciting new development in cross-platform app development that has the potential to revolutionize the way we approach mobile app development for both Android and iOS platforms.

Kotlin Multiplatform is a cutting-edge technology that enables developers to write a single codebase for multiple platforms, including iOS and Android, using the popular Kotlin programming language. With Kotlin Multiplatform, developers can leverage the power of shared code while still taking advantage of platform-specific APIs, resulting in faster development times, reduced maintenance costs, and a more consistent user experience across multiple platforms. This approach not only saves time and resources but also ensures a more cohesive and unified codebase that can be easily maintained and updated as needed.

Kotlin Native and Kotlin for iOS: Powerful Tools for Cross-platform Development

Kotlin Native, a key component of Kotlin Multiplatform, is a native compiler that allows developers to compile Kotlin code to native binaries, eliminating the need for a virtual machine and providing better performance and compatibility with native development tools. This powerful feature enables developers to share code between platforms and write high-performance code for iOS using Kotlin, without the need for Objective-C or Swift knowledge. Moreover, Kotlin Native simplifies the development process by providing a unified build system, reducing the overall complexity and overhead of cross-platform development.

Additionally, Kotlin Multiplatform is fully compatible with existing iOS and Android development frameworks, making it easy to integrate with existing codebases and infrastructure. This compatibility means that developers can gradually migrate their codebases to Kotlin Multiplatform, ensuring a smooth and seamless transition without disrupting ongoing projects or requiring a complete overhaul of existing systems.

The Evolving Roles of Director of Technologies, Director of Engineering, and Chief Technology Officers

The rapid evolution of technology and the increasing complexity of modern IT infrastructures have led to a shift in the roles and responsibilities of technology and engineering executives, including Directors of Technologies, Directors of Engineering, and Chief Technology Officers. Today, these leaders are expected to be not only strategists and decision-makers but also innovators, constantly exploring new technologies and trends to drive business growth and success.

In this context, embracing Kotlin Multiplatform and cross-platform development methodologies represents a significant opportunity for technology and engineering executives to demonstrate their innovative spirit and strategic vision. By adopting Kotlin Multiplatform, these leaders can position their organizations at the forefront of technology, reduce development costs, and improve overall efficiency, all while providing a superior user experience for their customers.

As a Chief Technology Officer, I am excited about the potential of Kotlin Multiplatform and cross-platform development for our organization's mobile app development strategy. By embracing this technology and fostering a culture of innovation and continuous learning within our team, I am confident that we can continue to drive business growth, improve efficiency, and deliver exceptional value to our customers.

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See also:

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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