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Hi, I'm Sébastien Gruhier, a Flutter development expert with over 30 years of experience in technical leadership and mobile and web development. I specialize in software architecture, cross-platform solutions, and managing international engineering teams, with a strong focus on AI integration and agile practices. I enjoy turning complex ideas into robust, scalable applications. I lead with empathy, mentor engineers, and collaborate closely with product, design, and QA to deliver delightful user experiences across mobile, web, and desktop platforms.…Hi, I'm Sébastien Gruhier, a Flutter development expert with over 30 years of experience in technical leadership and mobile and web development. I specialize in software architecture, cross-platform solutions, and managing international engineering teams, with a strong focus on AI integration and agile practices. I enjoy turning complex ideas into robust, scalable applications. I lead with empathy, mentor engineers, and collaborate closely with product, design, and QA to deliver delightful user experiences across mobile, web, and desktop platforms.

Sébastien Gruhier

Developer, App Developer, Web Developer, +4

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Hi, I'm Sébastien Gruhier, a Flutter development expert with over 30 years of experience in technical leadership and mobile and web development. I specialize in software architecture, cross-platform solutions, and managing international engineering teams, with a strong focus on AI integration and agile practices. I enjoy turning complex ideas into robust, scalable applications. I lead with empathy, mentor engineers, and collaborate closely with product, design, and QA to deliver delightful user experiences across mobile, web, and desktop platforms.…Hi, I'm Sébastien Gruhier, a Flutter development expert with over 30 years of experience in technical leadership and mobile and web development. I specialize in software architecture, cross-platform solutions, and managing international engineering teams, with a strong focus on AI integration and agile practices. I enjoy turning complex ideas into robust, scalable applications. I lead with empathy, mentor engineers, and collaborate closely with product, design, and QA to deliver delightful user experiences across mobile, web, and desktop platforms.

Available to hire

Hi, I’m Sébastien Gruhier, a Flutter development expert with over 30 years of experience in technical leadership and mobile and web development. I specialize in software architecture, cross-platform solutions, and managing international engineering teams, with a strong focus on AI integration and agile practices.
I enjoy turning complex ideas into robust, scalable applications. I lead with empathy, mentor engineers, and collaborate closely with product, design, and QA to deliver delightful user experiences across mobile, web, and desktop platforms.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Language

French

Fluent

English

Fluent

Work Experience

Team lead / Senior flutter developper at DigitRE (France)

April 1, 2025 - Present

Agile development (scrum), functional programming, clean architecture, cubit, web and mobile

Team lead / Senior flutter developper at Bloxley (noeo bank

January 1, 2022 - January 1, 2024

Agile development, clean architecture, riverpod, web and mobile

Lead Developer at Dragonfly

January 1, 2025 - Present

Cross-platform Bluesky client development (Mac/iOS/Android) with full-stack implementation, Supabase backend integration, and UI/UX collaboration with Odubu Design

Mobile Game Developer at Odubu Games

August 1, 2022 - Present

Design and development of cross-platform mobile games in Flutter

Flutter Trainer at AlgoSup

June 1, 2024 - September 20, 2025

Development of educational programs, project supervision and skills assessment. Training and hands-on workshops for 50 Computer Science students

Trainer & Speaker at Skills Matter

January 20, 2010 - September 20, 2025

Teaching Ajax & RIA courses in the United Kingdom

Speaker at Paris on Rails

June 1, 2006 - September 20, 2025

Lectures about using Ajax with Ruby on Rails

Software Engineer at INAS

April 1, 1998 - September 20, 2025

Software development

Co-founder & CTO at Habillage

July 1, 2005 - September 20, 2025

Co-founder of a web design company for small towns. Technical and strategic management

Software Engineer & Project Manager at ISTA RS

December 1, 2003 - September 20, 2025

Software development and team management; progression to managerial responsibilities

Founder at Xilinus

April 1, 2008 - Present

Development of mobile, web and desktop Flutter applications; Strategic and technical direction; Innovation in emerging technologies

Freelance Ruby on Rails Expert Consultant at Various Clients

December 31, 2016 - September 20, 2025

Ruby on Rails / Javascript development for various international clients

Tech Lead & Senior Flutter Developer at Bloxley

December 31, 2023 - September 20, 2025

Architecture and development of Flutter mobile banking application from scratch; integration with financial services and banking APIs; leadership in startup environment

Tech Lead at Gradient Cyber

December 31, 2021 - September 20, 2025

Full Angular and ElasticSearch web app; cross-platform Flutter mobile development; architecture and internal API integration; leadership of an international team

Tech Lead Flutter at Digit RE

April 1, 2025 - Present

Management of the Flutter front-end team for Capifrance and Optim Home; architecture and CI/CD pipelines; Agile sprint planning; code reviews

Lead Developer at Dragonfly

January 1, 2025 - Present

Cross-platform Bluesky client development (Mac/iOS/Android) with full-stack implementation, Supabase backend integration, and UI/UX collaboration with Odubu Design.

Tech Lead Flutter at Capifrance / Optim Home

April 1, 2025 - Present

Management of the Flutter front-end team; architecture and development of mobile and web Flutter applications; Clean Architecture with Cubit pattern; CI/CD optimization with Azure DevOps; Agile sprint planning and code reviews.

Founder at Xilinus

April 1, 2008 - Present

Development of mobile, web and desktop Flutter applications; strategic and technical direction; innovation in emerging technologies.

Tech Lead & Senior Flutter Developer at Bloxley

December 1, 2023 - September 20, 2025

Architecture and development of a Flutter mobile banking application from scratch; launched on Google Play and App Store US; management of development team; integration of financial services and banking APIs; performance and UX optimization.

Tech Lead at Gradient Cyber

December 1, 2021 - September 20, 2025

Full Angular and ElasticSearch web application development; cross-platform Flutter mobile app development (iOS/Android); tech lead of an international team of 5; architecture design and internal API integration.

Mobile Game Developer at Odubu Games

August 1, 2022 - Present

Design and development of cross-platform mobile games in Flutter (My Tiny Room, Mini Memo, Cozy Sudoku, Sudok-Hue).

Co-founder & CTO at Habillage

July 1, 2005 - September 20, 2025

Co-founder of a web design company for small towns; technical and strategic management.

Software Engineer & Project Manager at ISTARS Software

December 1, 2003 - September 20, 2025

Software development and team management; progression to managerial responsibilities.

Software Engineer at INAS Software

April 1, 1998 - September 20, 2025

Development of animated drawing software in C++ on Silicon Graphics.