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Julien MottezJM

Julien Mottez

Digital Product Designer and Developer

€650/day
Lyon, FR
15+ years

Average response time: 1 hour

Freelancer profile translated to English.
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About Julien

I design and build digital products, from idea to production. 15 years of Java development, and 2 years as CTO of a mobile app that reached 65,000 users. I step in where a product needs to be started, taken over, or scaled up.
  • French

    Native or bilingual

  • English

    Fluent

Can work on-site
Lyon (up to 50km)

Experience

  • Vibly
    CTO
    EDUCATION AND E-LEARNING
    January 2024 - February 2026 (2 years and 1 month)
    Lyon, France
    Company: Startup, a mobile application that allows student members to manage their daily lives more easily.

    Position: Technical manager of a startup of 11 people, manager of 2 developers. Responsible for the "build & run" of the application, as well as all the technical aspects of the startup. Member of the Executive Committee.

    Autonomy: Took over responsibility for the application entirely independently: sole technical person hired, no existing documentation, no communication possible with previous individuals in charge.

    Scale up: The application triples its number of users each year, with over 65,000 active members. With the shotgun ticketing system, the application experiences peaks of over 5000 new connections in less than 2 minutes. The application was not at all adapted to this influx (significant mobile load, numerous crashes as soon as there was traffic). Significant stability and volume work was done to handle this user flow without issues: application breakdown by context, implementation of load tests on the infrastructure, production monitoring.

    Technical Management: Responsible for the technical vision of the application and the company. Daily team organization. Co-construction of the product vision.

    Technologies and methodologies used
    - Java 21, Spring Boot 3, JUnit 5, NodeJS, Flutter 3, PostgreSQL, MongoDB, AWS
    - TDD, DDD, Hexagonal and Microservice Architecture
    - Technical and product roadmap, Architecture Decision Record
    Spring boot Flutter CTO Leadership Product Strategy
  • Ippon Technologies
    Senior Consultant, Technical Lead and Coach
    DIGITAL AND IT
    January 2021 - September 2023 (2 years and 8 months)
    Lyon, France
    Company: IT consulting firm specializing in Craftsmanship, Cloud, and Data.
    Position: Senior consultant in technical lead and agile technical coach roles. Member of the national Core Team and trainer for the "Software Engineer" practice. Involved in recruiting and onboarding new consultants. Member of the Lyon agency's consultant boards to develop agency life. Internship tutor.
    Mission as Craft Coach at AGPM (Insurance for military personnel) for 1 year
    - Support for an IT department of 60 developers, 7 teams, on software and backend development practices
    - Implementation of libraries and utilities to assist teams: API log management, test library, error handling, CI/CD pipeline...
    - Demonstration of application transformation (Document Management) from legacy to Cloud Native (MoveToCloud)
    - Facilitation of communities of practice (Katas, training, knowledge sharing)
    Mission as Technical Lead at Thalès Digital Factory (Independent Thalès branch assisting and supporting the group's digital transformation in Cloud, Big Data, and Lean principles) for 1 year
    - Lead of the billing team, 3 developers, a Product Owner, a Scrum Master. The team's goal is to aggregate costs from each factory service, apply pricing and discount rules, and provide visual indicators and notifications.
    - Responsible for software quality and team member skill development.
    - Member of the factory's good development practices guild, which defined coding conventions.
    Technologies and methodologies used
    - Java 17, Spring Boot 3, JUnit 5, Mockito, VueJs
    - Hexagonal and Microservice Architecture
    - TDD, DDD, Behavior Driven Development, Kata, community of practice, team conventions
    Spring boot Software Craftsmanship Java Tech Lead team coaching
  • GRETA Provence
    Training Manager
    EDUCATION AND E-LEARNING
    December 2019 - April 2021 (1 year and 4 months)
    Aix-en-Provence, France
    Company: Training organization
    Position: Manager (Preparation and delivery) of two 6-month training sessions for future Java Web developers, focused on practice and professionalization. Creation of all training materials and associated practical exercises. Technologies taught
    - OOP, Java, Spring, Tomcat, JDBC, JPA/Hibernate, Javascript
    - JUnit, Mockito, introduction to TDD and refactoring
    - Git, Agility, Clean coding, Design patterns
    Training Software Craftsmanship Java Spring Spring boot

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Education

  • Computer Engineering
    UTBM
    2011
  • University Diploma in Technology in Computer Science and Software Engineering
    IUT de DIjon
    2006

Certifications

Skill set

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