Sébastien Gruhier

Co-Founder

Nice, Provence-Alpes-Côte d'Azur, France26 yrs 11 mos experience

Most Likely To SwitchHighly Stable

Key Highlights

Flutter Team Lead with 6 years of experience.
Expert in mobile application architecture and development.
Published multiple Flutter packages and mobile games.

Stackforce AI infers this person is a Fintech and Mobile Development expert with strong leadership capabilities.

Contact

Skills

Core Skills

Mobile Software DevelopmentFlutterWeb Applications

Other Skills

Agile/Scrum methodologyBanking APIsBloc/CubitBlockchain integrationBluesky APICI/CD Azure DevOpsCI/CD CodeMagicClean ArchitectureCommunicationCubit/Bloc patternDartDesign PrinciplesDistributed TeamsEnglishFirebase

About

Flutter expert with 6 years of framework experience and 25+ years in software development. I combine deep technical expertise with team leadership to deliver performant and scalable mobile applications. My Flutter expertise: - Complete iOS/Android applications with robust architecture - Technical team management (up to 5 developers) - CI/CD, complex API integrations (GraphQL, REST) - From concept to store deployment Recent achievements: - Flutter Team Lead at DigitRE (current mission) - Bloxley neo-banking application (5-dev team) - DragonFly macOS/iOS client for Bluesky (2025) - 4 mobile games published on stores (My Tiny Room, etc.) My added value: 25 years of technological evolution (C++, Ruby, Angular, React, Flutter) give me unique architecture vision and effective team mentoring capabilities. Expert in latest AI-assisted development tools (Claude Code, MCP) to optimize productivity and code quality. Open Source contributor: - 2 Flutter packages published on pub.dev (awesome_emoji_picker, smart_overlay_menu) - Regular contributions to Flutter ecosystem Flutter trainer (AlgoSup) and recognized technical speaker. Available for Flutter freelance missions - Team Lead or Senior Developer Technical stack : Flutter, Dart, GoRouter, Riverpod, Bloc/Cubit, Firebase, GraphQL, CI/CD CodeMagic, Clean Architecture

Experience

Xilinus

7 roles

Tech Lead of the front-end development team for Capifrance and OptimHome mobile applications.

Apr 2025 – Present · 11 mos

Technical responsibilities:
Leadership of Flutter front-end development team
Architecture and development of Flutter mobile and web applications
Clean Architecture implementation with Cubit pattern for state management
CI/CD pipeline setup and optimization with Azure DevOps
Agile methodology: sprint planning, code reviews, and continuous delivery
Technologies & methodologies:
Flutter (Mobile & Web), Dart, Cubit/Bloc pattern
Clean Architecture
CI/CD Azure DevOps, Git workflow
Agile/Scrum methodology

Mobile Software DevelopmentProblem SolvingCommunicationFlutterDartCI/CD Azure DevOps+2

Personal Project - Dragonfly (Bluesky Client)

Jan 2025 – Present · 1 yr 2 mos

Cross-platform Bluesky client for Mac/iOS/Android
Developed in Flutter in collaboration with Odubu Design (https://www.linkedin.com/company/odubu-design)
Full-stack development: UI/UX implementation and API integration
Technologies: Flutter, Dart, Bluesky API, Multi-platform deployment
Backend supabase

Mobile Software DevelopmentDesign PrinciplesProblem SolvingCommunicationFlutterDart+1

Flutter Teacher at AlgoSup

May 2024 – Jun 2024 · 1 mo

Course delivery, practical workshops, and project supervision for 50 computer science students

Mobile Software DevelopmentCommunication

Tech Lead and Senior Flutter Developer at an innovative 100% mobile neobank

Jan 2022 – Dec 2024 · 2 yrs 11 mos

Key responsibilities:
Architecture and development of mobile banking application in Flutter from scratch
Technical leadership of development team in a fast-paced startup environment
Integration of financial services and banking APIs
Performance optimization and user experience for real-time transactions
Close collaboration with product, design, and compliance teams
Technologies & environment:
Flutter (Mobile), Dart, Banking APIs, Blockchain integration
Real-time transactions, Security compliance
Startup environment, Agile methodology, International team
Key achievements:
Contributed to successful neobank launch on US App Stores
Built scalable architecture for international growth

Mobile Software DevelopmentDesign PrinciplesProblem SolvingCommunicationFlutterDart+2

Tech Lead - Gradient Cyber (Web & Mobile Applications)

Promoted

Jan 2017 – Dec 2021 · 4 yrs 11 mos

Web application: AngularJS + ElasticSearch, built from scratch
Mobile application: Flutter, cross-platform native development
Technical leadership of an international team of 5 developers
Architecture design and internal APIs integration
Technologies: AngularJS, Flutter, ElasticSearch, REST APIs

OAuthMobile Software DevelopmentWeb ApplicationsCommunicationProblem SolvingLeadership

Trainer & Speaker for Skills Matter

Jan 2009 – Jan 2010 · 1 yr

Teaching Ajax & RIA courses and workshops in Europe and North America. Lecturing at Skills Matter's events and conference. Elaborating private courses.

Problem SolvingCommunication