Devops Rennes : Trouvez vite les meilleurs freelances disponibles

Exemple de missions de Jean-Baptiste,
DevOps freelance

• Devops Engineer

  MICHELIN
  Jan 2022 - Jan 2023

  Dans un projet d’intelligence artificielle / big data analytics, j’ai été recruté pour renforcer l’équipe devops, et en particulier pour participer à la refonte complète de la plateforme de préparation des données. Les données préparées étaient destinées au machine learning.
  Une équipe d’une trentaine d’ingénieurs
  
  • (refonte) Auprès des Data Engineers Lead, travaillant en python, j’ai appris à travailler avec un stack python solide, comportant pyenv, venv, et setup tools, black flake8, python wheel packaging.
  
  • (refonte) J’ai complètement refondu la CI/CD, pour passer d’une CI/CD avec des pipelines Azure Devops et Azure Data Factory, à une CI/CD basée sur des pipelines Gitlab.
  
  • La nouvelle plateforme comprenait: Gitlab Pipelines + git repos / Azure Databricks workspaces, Snowflake, Azure Storage Containers, Azure AD, snowsql cli, databricks cli, dbx cli
  • Conception des environnements, de la gestion des secrets, de la solution de documentation, avec un pipeline déployant plusieurs MR simultanément uniquement avec le gitlab pages Michelin
  •

  • (operations as usual on global project infrastructure) (legacy and new platform), POC terraform / terragrunt / checkov,

• Devops Engineer, Kubernetes Team, CI CD Team

  Gravitee Source
  Jan 2020 - Jan 2022

  Devops at Gravitee, Kubernetes SME, I competely re-designed i re-implemented the whole Gravitee CI
  CD, migrating from Jenkins to Circle CI on the way. I can say that I today am a top expert about Circle
  CI and Gitops absed CICD. I am extremely proud that I had the opportunity to work with the
  ******** Team, a World Class Team of Software Engineers, from which i deeply learned about
  many stopics. I also there learned a lot about what is, and what brings, cybernetics in the real cloud
  industry world.
  Duties and Achievements
  • Full design, implementation, and migration of the whole of the Gravitee CICD System. In
  particular, I had to design and implement a very unique CICD component, using NodeJS
  TypeScript RxJS, a component to orchestrate Pipeline executions in a multi git repository
  context, bringing scalability and removing Single Points of Failures.
  • Implementation of all standard operations using pure infra as code of gravitee hosted offers
  (deployment, backup, restore, upgrades, downgrades, cloud provider migrations, etc.).
  • Design of hosted saas offers fo the Gravitee API Gateway,
  • Design of best architecture practices for Gravitee API Gateway users.
  • Circle CI Evangelist for the Dev Engineers
  • Training junior devops engineers
  • Kubernetes SME
  • Level 3 Support niveau 3 for Gravitee Customers, example : design and provisioning of a VPN
  Gateway between Azure and Google GCP

  Tech • Devops stack : Pulumi, Terraform, Helm, Docker, Kubernetes, K3D, Azure AKS, AWS EKS, FluxCD. • OS : Debian, alpine, and many dockerized Linux distros • Dev stack : NodeJS TypeScript, Python, bash /sh shell, Golang.

• Devops Engineer

  CRESH.EU
  Jan 2020 - Jan 2023

  At ********, a small french Startup, I worked on designing and implementing the entire Cloud
  Infrastruture, 100 % Kubernetes based : Cresh offer is a SAS Offer, an innovative b2b payment solution.
  AWS EKS, Helm deployment of dev’s work, Gravitee API Gateway. ******** founders heard
  of me because of the work I did there at cresh.
  Small Startup when I helped them, I was at the time the only devops engineer, and massively used
  Pulumi and Terraform.
  Having major architecture and technical points of disagreement with the CTO, we together agreed to
  end our collaboration.
  Duties and Achievements
  • Devops SME / Cloud Architect, full infrastructure design
  • Kubernetes SME
  • Main Kubernetes Cluster Terrfaformation Automation.

  Technique • Devops stack : Pulumi, Helm, Docker, Kubernetes, AWS EKS, Gravitee API Gateway. • OS : Debian, Alpine. • Dev stack : NodeJS TypeScript, bash /sh shell.

• Devops Engineer, CI CD

  SFR
  Jan 2019 - Jan 2019

  Devops contractor at SFR (French ISP and phone operator), Cisco NSO project Team (SDN)in charge
  of datacenter deployment automation and operations.
  Duties and Achievements
  • I worked on designing and deploying a full devops stack, for developers to git push their Python
  source code, ending with their code deployment to production Cisco NSO devices. I even had,
  on the SFR request, to build from source docker registry it self : SFR needed its CICD platform
  to be "fully built from source" (docker, registry, etc.), and that, for security constraints.
  • I was a CI/CD evangelist on this Cisco NSO project (networks engineers do not have the same
  culture as Dev Engineers, to say the least). This included introducing and training network
  engineers on git, and why Gitlab and Gityhub are our everyday Facebook (As I use to say,
  Facebook is our today’s real office)
  • I designed git workflows, trained on how to operate Gitlab EE as an infrastructure on premise :
  software engineers at SFR, were in charge of operating Gitlab EE because their team owned it
  • I took a Cisco NSO training session at Cisco, on how to automate bare metal provisioning of
  Cisco NSO Clusters, in « Issy les Moulineaux » a French city close to Paris.
  • With those duties, I worked with more than 100 engineers, coming from 3 different teams : pure
  Infrastructure team (those who own the OpenStack), software development teams, network
  engineers team

  Tech • Devops stack : Ansible, Docker, Gitlab EE, Jenkins Pipelines, LVM, Cisco NSO, Cisco KUBAM pourle PXEless boot, SSH Bastions. • OS : Windows, Linux CentOS 7 • Dev stack : Python 2 Python 3 PyEnv . Bosstek

• Devops Engineer

  Jan 2018 - Jan 2018

  Employee at Bosstek, a french consulting SMB, specialized into infrastructure management, that was
  my first experience in a « Pure Infra » company, and the first time i took that kind of angle into the
  devops market.
  I took part into 3 proejcts with Bosstek, for 3 different French Customers. This experience was very
  interesting, for I worked there with people who never ever worked in software development. I would say
  they were from the « old style » infrastructure world, and that is why i had a lot to learn with them.
  Duties and Achievements
  • I worked in the core team of projects for huge companies : SOPRA Steria, ENEDIS, and
  Carrrefour One Cloud, as Devops SME / Cloud Architect.
  • I have been Dev Engineers Team Leader At SOPRA STYERAI, where i worked under the
  authority of David Maurange.
  • I also conducted two internal studies about in that company, where i was the only Kubernetes
  SME :
  ◦ Production grade Kubernetes Cluster Ingress Controller best practices.
  ◦ A proposed solution of system monitoring with Rsyslog/Elastic Stack, (with a focus on CA
  servers restarts) : purpose was to have the company certified as a CA Authority delivering
  SSL/TLS certificates.
  • Working in the Carrefour One Cloud (a project in collaboration with Google), I there discovered
  for the first time the concept of Headless CMS, with ******** , and it is the first time I
  worked on a production grade use of the Gravitee API Gateway.
  Tech
  • Devops stack : Terraform, Ansible, Jenkins Pipline, Docker (docker-compose) , NGINX,
  Gravitee.io (API Gateway), Keycloak (avec OpenID explicit flow), Kubernetes, ELK.
  • OS : Linux Debian (pour mon poste de travail, stretch avec GNOME) & Ubuntu Server CI
  stack: Karma / Jasmine, Jenkins, Maven, Nexus Sonatype, GIT, (toute la stack SAAS bitbucket
  utilisée par le client), Eclipse IDE
  • Dev stack : NODEJS, NPM, Angular 5, ReactJS, MongoDB (dans 2 missions de conseils),
  Jhipster, Jboss EAP .

• Java Dev Engineer / CICD

  Vierling Communication
  Jan 2016 - Jan 2018

  Java Dev Enginer at Vierling-Communication, an R&D company of the « Laudren Group » .
  R&D main goal was to design and develop an cutting edghe network monitoring system.
  What was thrilling and extremely interesting in this experience, is that the system did not monitor
  software, but hardware, and in paritcular, the system goal mainly was to monitor Fiber Optics and
  Copper cables failures !
  The developed Monitoring system consisted in both hardware and software : pure Linux OS, java and C
  language.
  Duties and Achievements
  • I worked on the software part which was the « brain » of the monitoring system : the server that
  collects all data from distributed systems, analyze them, and manages alerts.
  • I introduced there bare metal provisioning : PXE booted to deploy the whole stack, and i
  automated all that to be able to run reliable testing. That was my answer to « it is not possible to
  fully automate our solution deployment ».
  • I introduced and convinced of the necessity of Acceptance Tests.
  • I developed an authentication module implemented using Jee Listeners and Spring
  modularization
  • I brought in Dockerized deployment, the internal use of Pipelines using Gitlab on premises, the
  java deployment happening in Jboss EAP (Angular 8/9 + bootstrap Web UI).
  • Geolocation of hardware failures, so GIS matters, I introduced Leaflet on the Web UI
  • This experience was a turning point for me : That is were I worked months with whom I
  consider my master as far as *NIX and what OS actually are, a « Linux Wizard » , Eric
  Lévenez, a man I will always remember.

  Tech • Physics : Optics principles for OTDUs • Devops stack : Ansible, PXE boot, PXE boot kickstart installations, Docker, Virtual Box, KVM Virtual Manager, Free IPA Server, SSH / SCP/ WinSCP, with a lot of bin/bashing. • OS : CentOS 6 & 7, Ubuntu • CI stack : Gitlab, Artifactory, MAVEN3 Git, Eclipse JBoss Tools, Jenkins, Checkstyle, JMeter, JUnit, DbUnit, Jasmine + Karma, Wireshark & wireshark dissectors • Dev stack : Java, JCA IronJacamar, JPA, Hibernate, WILDFLY, EJB3 Stateless & MDBs', JAXRS

• Jan 2014 - aujourd'hui

  ◦ As I first talked of the critical importance of a DRP, i was certainly not realizing how deeply
  I would dive into infrastructure management...
  • I built month weeks after weeks a small team consisteing of 3 to 5 developers and ops, I was the
  software architect with 2 developers, and manager for the 2 / 3 ops engineers (system enginrer,
  security engineer, network engineer).
  • I was personnaly working on the CI system a classical recipe of Git, Maven, Jenkins (Junit,
  DbUnit, Mockito, etc...), Artifactory. All classics of that prehistorc times.
  • One unthinkable thing happened there, where i lerned a lot about real infratructure , I conducted
  and designed a full server room: SPVC used on premises servers, the IS being used by
  employees from their tablets mainly (MTT french trademark Android tablet). A crazy
  experience where i learned what a datacenter really is, e.g. what material are used on the floor
  (epoxy) of datacenters, Server Hardware Benchmark, network backbone, DRP with FM200 fire
  systems, air colling, electricity etc...
  Technique
  • Operational : Gantt charts, Specific Terms and Conditions documents in building industry
  (CCTP in French) / Response to tenders (« Réponses à appel d’offres » in French) / supply chain
  management on a constuction site.

  Devops stack : Chef.io, Virtual Box SOAP API, KVM Virtual Manager OS: CentOS 6.x, Ubuntu server • CI stack : Artifactory, MAVEN3 (M2E), Git, Eclipse (eclipse bpmn modeler), Jenkins, Checkstyle, JMeter, JUnit, Mockito, DbUnit. • Dev stack : Spring, JPA, Activiti BPMN engine, petals ESB / JBI java standard, tomcat 7, JAXWS/ SOAP/ WSDL, JAX-RS, Spring WS, JSF2, Prime Faces, jQuery v2.x.x, JavaMail, Apache James server, Mailets. • Misc. : FM200 ?

• Architect, IT department founder

  SPVC was an SMB
  Jan 2013 - Jan 2015

  of the contruction industry, specialized into fluids.
  I designed the first real Information System, conducted and took part in developments of software
  components required to deliver that first I.S.
  I thereafter structured the newly created IT department to be fit for production management.
  All in all, this was among my most craziest professional experiences, that made me learn a lot about
  who i am in the IT industry.
  Also my first experience as a pure Software guy, putting his hands unawarely into infrastrucutre.
  And finally, this is the point where I started there changing the way i definded my self : at that point, I
  used to say that i am a « FullStack » Architect.
  Duties and Achievements
  • The Work began with the desing and implementation of a simple utility software, whose goal
  was to normalize Business Processes, especially for the commercial and build sites managers
  everyday tasks.
  • I then made it production « almost » ready, by adding to it the seed of a DRP. The implemented
  services were relation to construction project management : Gantt Charts, Tasks Management,
  reporting.
  • A second generation, redesigned IS turned it into a B.A.M. system (Business Activity
  Monitoring) using :
  ◦ The Acitviti BPMN engine.
  ◦ A JBI ESB coupled to the BPMN engine, SOA architecture (all BPMN execution were

  SOA architecture (all BPMN execution were invoked through the ESB, using JAX-WS / JAX-RS).

• Java Dev Engineer

  Atermès Group
  Jan 2013 - Jan 2013

  Atermès is a French Company affiliated to Thalès, a player in the military technologies industry.
  As Java Dev Engineer, I worked in the R&D department, where i designed and implemented a set of
  Java JSE6 Swing components, using the Luciad Lightspeed framework (a GIS Framework, very early
  endowed with 3D capabilities).
  It was mainly about Terran elevation analysis, hypsometry in GIS.
  Military purpose only.
  Duties and Achievements
  • designed and implemented a set of Java JSE6 Swing components, using the Luciad Lightspeed
  framework, and Luciad Lightspeed hypsometric "IndexColorModels".
  • I pushed in Junit tesyting, the guys were manily working over there with the well know Qt C++
  UI framework.
  • I learned for the first time, and a lot about GIS systems :
  ◦ that’s after that pro experience, that I got interested into OpenStreetMap, Leaflet, etc.
  ◦ Fundamental knowledge : géoïde, ellipsoïde de référence, système de
  référence, projections, point de référence, datum, tuiles, "line-of-sights", etc.…

  Tech • Devops stack: empty • OS: Windows, sur machines Dell Alienware • CI stack: quasi-empty : Maven + Junit • Dev stack: Swing JSE6, JAXB, Luciad Lightspeed, MVC2 design pattern. • Misc. : a bit of differential geometry of finite dimensional manifolds.

• Michael Page International Dev Engineer at Michael Page’s IT dept.

  EMEA
  Jan 2012 - Jan 2012

  At the heart of Michael Page’s IT Department (EMEA), I took part in the full revamping of Michael
  Page’s Inforamtion system, along with 10 à 15 Java Dev Engineers, 2/3 IT Architects, QA and ten
  Business Analysts.
  My personal scope was focused on the « backend » part of all software responsible for Candidates
  Processes Management, including the Candidates Assessment. This was my first professional
  experience into a major large scale IT Department of an International Corporation.
  Duties and Achievements
  • In collaboration with IT Architects, and Business Analysts, I designed and implemented the
  "candidate assessement" components. That made me an SME on the Candidate Assessment
  functional scope.
  • Learned a lot on HR Business Process in the real world
  • Classic Java developmen, involving CI, using Maven, JUnit, on premise Nexus Sonatype repo.
  Some Java dependencies had to be « mavenized », some others already were.
  • I took part in a huge Security Operation, because of a discovered major intrusion attack in
  Michael Page Information System, a long memorable pizza week-end...
  • I started there being involved into topics of CICD and it the Infrastructure it relies on.
  • I worked on a proposal for using the Fractal Julia Framework to refactor functional units along
  the IS revamping process.

  Tech • Devops stack: empty • OS: Windows • CI stack: Maven, Tortoise SVN, JIRA, Jenkins, Nexus Sonatype. • Dev stack: Tomcat 6, WebLogic 9, struts 1, Taglibs, Spring, hibernate, JUnit, JMX, JAXP, Log4J, Fractal Julia, Javamail.(2011 : cf. Mon année de diplôme Architecte logiciel AFCEPF)