Julien JANVIER

• j.janvier@gmail.com
• Linkedin
• Github
• Nantes, France
• Looking for a remote position

Freelance Software Engineer with 14 years of experience, I like to develop the right thing, the right way. I’m passionate about TDD, XP, DDD, decoupled architectures and agile & devops philosophies.

Experience

Senior Software Engineer, Freelance – Skaleet Sept 2022 – Present

• Building a credit offer for the core banking Skaleet: scoring system, offer management, disbursement
• Stack: PHP, MySQL, XP, TDD, Gitlab CI, Typescript, React

Senior Software Engineer, Freelance – Edflex Jan 2022 – June 2022

• Built a json:api API for partners and customers of the learning SaaS platform Edflex.
• Stack: PHP, Symfony, MySQL, XP, TDD, Docker

Senior Software Engineer, Freelance – Convelio Jan 2021 – Sep 2021

• Refactored some legacy parts of the art logistics SaaS platform Convelio. Developed new features. Migrated of the email system to Mailjet.
• Stack: PHP, Laminas, MySQL, Datadog, XP, TDD

Akeneo Integrator, Freelance – Smallable Aug 2020 – Dec 2020

• Integrated the PIM platform Akeneo into Smallable information system.
• Stack: PHP, Symfony, MySQL, Elasticsearch, XP, TDD

Chapter/Staff Engineer – Akeneo 2018 – Jul 2020

Lead 3 squads toward SaaS, representing a total of 15+ engineers in direct collaboration with the CTO.

• Turned an on-premise 700K LoC application into a SaaS compatible one. From one quaterly manual release (3 weeks long, performed by 5 persons) to one semi automatic release by week (2 hours long, performed by 1 person).

  • Fixed stateful problems (sessions, files storage)
  • Dockerized and unified the tech stack, from developers’ machines to QA and prod envs.
  • Built a continuous delivery pipeline allowing daily deployments.
  • Implemented a feature flag system for both frontend and backend.

• Reorganized a 700K LoC application to better serve the business needs and the 3 squads organization’s. Used DDD strategic patterns. Conducted workshops with Product Managers and Head of Product.

• Migrated the handmade CI pipeline to Circle CI. Improved build time by 500%. Improved MTBF drastically.
• Stack: PHP, Symfony, Circle CI, Docker, Continuous Integration, Continuous Delivery, XP, TDD, DDD

Lead Developer – Akeneo 2016 – 2017

• Redesigned the core catalog modeling system in Akeneo PIM to be able to handle complex products

• Redesigned the product storage and search system in Akeneo PIM

  • Unified two different storage systems (MongoDB vs MySQL) into one (MySQL with JSON values for the products’ flexible part)
  • Implemented a search products system with Elasticsearch

• Defined the training program for 20+ engineers. Planned sessions about testing, decoupled architectures and DDD.

• Stack: PHP, Symfony, MySQL, Elasticsearch, MongoDB, XP, TDD, BDD, DDD

Software Engineer – Akeneo May 2014 – 2015

• Developed many features on Akeneo PIM
• Stack: PHP, Symfony, MySQL, MongoDB, XP, TDD, BDD

Software Engineer – Royal Canin 2012 – Apr 2014

• Released an application used by Royal Canin’s Packaging department to automate the packaging production process for all of the brand’s products
• Stack: PHP, Symfony, MySQL, TDD, BDD

Software Engineer – Wordline 2010 – 2011

• Implemented strong authentication modules for new banks
• Redesigned applications to significantly strengthen the encryption of sensitive data (use of 3DES and AES encryption algorithms)
• Participated in security audits as a developer interviewed on the “top 10 OWASP” project
• Stack: Java/J2EE, JSP, Spring

Software Engineer – Atos 2008 – 2009

• Customer European Commission:

  • Customized OpenSource PHP collaborative tools (Mediawiki, phpBB, Wordpress)
  • Developed, tested and administrated the PHP Drupal content management system

• Customer Groupama:

  • Migrated an insurance company data under Oracle using SQL and Java

Opensource & Personal Projects

TDD.sh 2021 – present

Creator of TDD.sh, a simple opensource CLI tool written in Go to enforce the TDD practice.

Nouba 2021 – present

Creator of Nouba, a mobile app developed with Dart, Flutter, Typescript and Firebase, which facilitates the organization of events with friends or family.

Akeneo 2014 – 2020

Contributor to the opensource PIM solution Akeneo, written in PHP and Symfony.

Sylius 2013 – 2014

Contributor to the opensource ecommerce platform Sylius, written in PHP and Symfony.

Education

Institut d’Administration des Entreprises, Tours, France 2007 – 2008

• Master 2 Administration des Entreprises

École Polytechnique de l’Université, Tours, France 2004 – 2007

• Diplôme d’Ingénieur en Informatique

Skills

Languages & frameworks:

PHP & Symfony, Go, Dart & Flutter, Typescript & React

Databases

SQL, MySQL, Firebase, MongoDB, Elasticsearch

Methodologies

TDD, XP, DDD, BDD, Agile, Devops

Ops

Docker, Circle CI, Github Actions, Gitlab CI, Datadog