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Yoan GuilleminYG

Yoan Guillemin

Lead PHP / Symfony Developer

€550/day
16 projects
Paris 11e Arrondissement, FR
8-15 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Yoan

For several years now, I have been involved in missions related to Symfony technology and its surrounding ecosystem. Throughout this time, I have strived to emphasize the quality of the work to be done rather than its quantity.

I have had the opportunity to assist my clients, from startups to large corporations, in choosing their technologies, their technical organization, and their software architecture.

I am available for any back-end Symfony missions, remote only or in-person in REIMS.

Do not hesitate to contact me; I will take the time to study your project.
  • French

    Native or bilingual

  • English

    Conversational

Remote only
Primarily works remotely

Experience

  • IAD France
    Backend PHP/Symfony Developer
    REAL ESTATE
    March 2022 - Today (4 years and 3 months)
    Paris, France
    Client support on the following elements:

    - Analysis of the existing system
    - Migration from Symfony 2.8 to Clean Architecture Symfony 5.4
    - Migration from Symfony 2.8 to Serverless Application - AWS (NodeJS - Typescript)
    - Implementation of SCRUM
    - Development of features based on the new software architecture: DDD, Clean

    Technologies used:

    - DDD, Clean Architecture
    - Services developed in Symfony 2.X/5.X/PostgreSQL/PHP 7.4 - 8, APIP 2.6
    - Containerized architecture (docker)
    - Development of unit/functional tests with PHPUnit
    - Async communication via RabbitMQ
    - Logs on DataDog
    - CI on Github
    - Serverless in NodeJS
    - AWS Technologies: Lambda / StepFunctions / DynamoDB…
    Symfony 5 PHP Clean Architecture AWS Lambda Serverless Scrum PHPUnit PostgreSQL RabbitMQ Elasticsearch Datadog AWS
  • Shippeo
    Backend Lead
    LOGISTICS AND SUPPLY CHAIN
    January 2021 - February 2022 (1 year and 1 month)
    Paris, France
    Client support on the following elements:

    - Analysis of the existing system
    - Takeover of developments intended for the Mobile channel
    - Backend lead for the newly created team (back for mobile)
    - Implementation of SCRUM
    - Development of features based on the new software architecture: DDD, CQRS, Hexa, Clean

    Technologies used:

    - DDD, CQRS, Hexagonal Architecture, Clean Architecture
    - Services developed in Symfony 4.X/5.X/MySQL/PHP 7.4/APIP 2.6
    - Containerized architecture (docker)
    - Development of unit/functional tests with PhpSpec/PHPUnit
    - Async communication via RabbitMQ
    - Logs on GrayLog
    - CI on CircleCI
    - Development on an Event Sourcing-like system
    Symfony 5 Symfony 4 PHP Clean Architecture Hexagonal Architecture DDD Docker PHPSpec PHPUnit RabbitMQ Graylog CircleCI Event Sourcing Scrum CQRS
  • Trigone Tech
    CTO
    TRANSPORTATION
    November 2019 - January 2021 (1 year and 2 months)
    Paris, France
    Client support on the following elements:

    - Functional and technical audit of the existing project
    - Support for a team of 4 Front/Back End developers
    - Support on AGILE methodologies, particularly SCRUM
    - Recruitment of future developers
    - Expertise in SOA (Service-Oriented Architecture) and training developers on this subject
    - Refactoring of a part of the current software architecture
    - Raising client awareness of QA
    - Product support and resulting technical choices

    Technologies used:

    - Service-Oriented Architecture
    - Services developed in Symfony 4.3/MariaDB (client's choice)
    - Containerization of the architecture (docker and migration to Kubernetes)
    - Implementation of an API Gateway (Kong)
    - JWT and API key authentication layer (Kong)
    - Addition of Rate Limiting (Kong)
    - Addition of CORS headers (Kong)
    - Development of a common SDK sharing the Domain
    - Developments carried out to apply the JSON-API v1.1 standard across all services
    - Implementation of various PSRs across all code
    - Development of unit/functional tests with PHPUnit
    - Addition of Elasticsearch for content indexing
    - Implementation of RabbitMQ
    - Implementation of the DTO pattern in certain services (automation)
    - Configuration of an AWS bucket for file uploads
    - CI implementation on GitLabCI
    - Support for Front-end developers on ReactJS
    Symfony 4 PHP Architecture web Management d'équipe Docker QA Recrutement PHPUnit Scrum Git MariaDB Kubernetes Kong

Reviews

4.4

Out of 5 ratings

S

Sébastien

Hubside

Reviewed on 6/30/2021

S

Sébastien

Hubside

Reviewed on 6/14/2021

Recommendations

NB
Julien DurisJD
Dolyveen RenaultDR
+4
Nicolas Brémont and 6 other people have recommended Yoan

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Education

  • IT Project Manager
    IPSSI
    2013
  • University Diploma in Technology in Computer Science
    University of Reims Champagne-Ardenne
    2012

Certifications

  • SensioLabs Certified Symfony Developer
    SensioLabs
    2015

Skill set

Categories