Sun S. D. Tan

Professional Summary

Experienced software engineer and tech lead with over 20 years of expertise in developing Java applications and cloud-native solutions. Passionate advocate for the Java community and open-source software.

Open Source Projects

• Eclipse JKube - Kubernetes/OpenShift Maven and Gradle plugins for Java applications
• Fabric8 Kubernetes Java Client - Kubernetes API client for Java
• Eclipse Che - Cloud-based IDE for development teams
• Eclipse Theia - Extensible IDE platform built with TypeScript
• Nuxeo - Open source content management platform
• Codenvy - Cloud development environment (predecessor to Eclipse Che)

Experience

Senior Software Engineer / Platform Engineering Consultant at Sciam (2024 - 2025)

FDJ United (Oct 2024 – Apr 2025)

Role: Squad Lead – DevOps / Platform Engineering (Centre de compétences Platform Engineering)

• Context: Takeover and industrialization of an existing draft for providing JFrog Artifactory as a managed platform service, replacing Nexus.
• Key Contributions:
  • Led a DevOps squad responsible for making the Artifactory platform production-ready.
  • Redesigned the platform to align with current enterprise standards and security requirements.
  • Implemented fully automated deployments using:
    • Terraform
    • Kubernetes
    • AWS
  • Integrated IGA (Identity Governance & Administration) and fine-grained access rights management.
  • Defined operational standards (availability, security, scalability, observability).
  • Collaborated closely with platform, security, and governance teams.
• Technologies Used: Kubernetes, AWS, Terraform, JFrog Artifactory, GitOps, IAM / IGA, CI/CD.

FLOA (Apr 2025 – Aug 2025)

Role: Platform Engineering / Cloud Native Consultant

• Context: Support for the migration of the Core Banking System towards an internally developed solution.
• Key Contributions:
  • Conducted a technical and organizational diagnostic:
    • Identified pain points through interviews with multiple teams (Dev, Ops, Architecture).
  • Defined target Kubernetes architecture and development environments.
  • Built a PoC development environment:
    • Minikube
    • Helm
    • End-to-end testing with Playwright
  • Delivered architecture and tooling recommendations to support:
    • Developer experience
    • Scalability
    • Reliability
  • Promoted Shift-Left practices (testing, automation, developer ownership).
• Technologies Used: Kubernetes, Helm, Minikube, Playwright, Cloud Native Architecture, DevEx, CI/CD.

Senior Software Engineer at Red Hat (2022 - 2024)

Eclipse JKube Project

• Project Description: Facilitated the integration of Java applications with Kubernetes and OpenShift. Extended traditional Java build tools like Maven and Gradle for cloud-native deployments.
• Key Contributions:
  • Enhanced project based on community feedback, ensuring high quality and functionality.
  • Presented at over 15 conferences, sharing best practices for Java cloud-native development using JKube.
  • Reviewed 124 pull requests and authored 47, contributing new features and improvements.
  • Technologies Used: Java, Apache Maven, Gradle, Kubernetes.

Fabric8 Kubernetes Java Client

• Project Description: Simplified management of Kubernetes resources via Java applications, aiding organizations in automating deployments and operations.
• Key Contributions:
  • Expanded library to support all Kubernetes resources by adding new DSL entry points and model types.
  • Implemented community-requested features and promptly fixed bugs, maintaining adherence to latest Kubernetes standards.
  • Authored 1 blog post and presented at 1 conference on effective use of the library.
  • Reviewed 61 pull requests and authored 6 to enhance functionality and stability.
  • Technologies Used: Java, GoLang, Kubernetes.

Senior Software Engineer at Red Hat (2017 - 2022)

Eclipse Che, Eclipse Theia, and Openshift Devspaces

• Project Descriptions:
  • Eclipse Che: Online IDE platform simplifying software development directly from a web browser.
  • Eclipse Theia: Modular, extensible IDE used on both desktop and cloud.
  • Openshift Devspaces: Secure, consistent development experience in Kubernetes and OpenShift environments.
• Key Contributions:
  • Developed and integrated the first Minishift addon for Che.
  • Adapted and fixed the public version of Eclipse Che for Red Hat Summit demos.
  • Enabled the Pull Request panel in Che6.
  • Innovated co-editing features in Che6 for real-time collaborative coding.
  • Adapted Che features to Theia, including Factory integration and bidirectional project synchronization.
  • Utilized Che for development, contributing to Che-theia and fixing bugs in various plugins.
  • Reviewed 140 pull requests and authored 135, enhancing features and stability.
  • Promoted Che through demonstrations and at over 15 conferences, including Devoxx France and EclipseCon.
  • Technologies Used: Java, Typescript, Docker, Kubernetes.

Tech Lead at Amadeus Paris (via Serli) (2015 - 2017)

• Responsibilities: Led the development and maintenance team for travel booking sites.
• Key Contributions:
  • Implemented Docker environments and created a Docker registry.
  • Developed Docker images replicating production and pre-production environments.
  • Authored an internal guide on Boot2docker.
  • Migrated projects from SVN to Git Stash.
  • Conducted Java code refactoring and load testing.
  • Improved software delivery processes and developed integration tests using Webdriver.
  • Resolved numerous bugs.

Tech Lead, Architect, and Developer at Codenvy (via Serli) (2013 - 2015)

• Project Descriptions:
  • Developed Codenvy, a collaborative cloud development platform, leading to the creation of Eclipse Che and Red Hat CodeReady Workspaces.
• Key Contributions:
  • Developed initial plugins for Eclipse Che, including database management and PR workflow enhancements.
  • Mentored two junior developers.
  • Presented at over 11 conferences, showcasing topics like pair programming and cloud development with Eclipse Che.

Various Short-Term Projects at Serli (2013 - 2017)

• Practice Insight (Australia): Developed case and document management software using Nuxeo and GWT.
• CNAV: Developed diagnostic tools for the open-source SSO connector Jaaslounge.
• Java Community Process / JBoss Weld Project: Improved Weld-OSGi during the update to OSGi 4.3.1.
• Nuxeo Community: Enhanced Nuxeo IDE and implemented XML component autocompletion.
• Zenika: Conducted approximately 15 Selenium Webdriver training sessions.

Nuxeo (2007 - 2013)

• Nuxeo Core Java Developer:
  • Developed Eclipse tools for Nuxeo plugin development.
  • Contributed to Nuxeo EP, DM, CMF, and Webengine.
  • Developed an Eclipse RCP platform for Nuxeo server connections and integrated live edit components in office suites.
  • Created a functional testing framework based on Selenium Webdriver.
• Nuxeo Java Developer - Production Team:
  • Developed content management systems for Press Association (London) and IRSN (Paris).
• Scrum Master:
  • Managed Scrum for Nuxeo projects.
• Training Department Manager:
  • Maintained training materials and conducted over 50 training sessions and consultations.

Other Professional Experience

• Economic Outlook Ltd (Adelaide, Australia) (2006 - 2007): Developed child management software and ad management tools using Eclipse RCP.
• Metaware Scopteam (Paris, France) (2006): Conducted load testing and optimization for Java applications.
• Thales Communication (Colombes, France) (2004): Developed military software in C++.
• Netpepper (Paris, France) (2003): Developed a web application for sharing bookmarks and files using Java and .NET.

Community Involvement

ParisJUG Crew Member (2015 - Present)

JUG Leader (2019 - 2023)

• ParisJUG: The Paris Java User Group (ParisJUG) is a community for Java enthusiasts in Paris, hosting regular meetups, talks, and events to share knowledge and foster collaboration among developers.
• Role as JUG Leader:
  • Organized and coordinated monthly meetups, bringing together Java experts to share insights and best practices.
  • Curated content for events, ensuring a diverse range of topics and high-quality presentations.
  • Fostered community engagement through social media and networking events.
  • Managed logistics for events, including venue selection, speaker coordination, and attendee registration.
  • Enhanced the group's visibility and membership through strategic partnerships and outreach.
  • Maintained the group's website and other communication channels, ensuring timely updates and information dissemination.

Devoxx France Volunteer (2018 - 2019)

• Role: Assisted in the organization of Devoxx France as part of the "gilets rouges" team.
• Contributions:
  • Supported event logistics, including registration, session coordination, and attendee assistance.
  • Helped set up and manage the venue, ensuring a smooth experience for speakers and participants.
  • Provided on-site support during the event, resolving issues and facilitating communication between organizers and attendees.

Conferences & Talks

Keynote

• Devoxx Belgium 2024 – Keynote
  • Devoxx Genie
    Devoxx Genie is an IntelliJ plugin for AI-powered development.
    Demo of ongoing work to port it to Visual Studio Code.

Java, Cloud IDE & Developer Experience (2014 – 2021)

• JavaOne: Pair Programming with Eclipse Cloud Development Top Projects
• EclipseCon (Europe, France, North America): Introduction to Eclipse Che, Live Pair Programming in the Cloud, Simplified Open Source Contributions, Coding Kubernetes for Kids with Scratch
• Devoxx France: Développement Java avec un IDE Cloud : YES WE CAN
• DevFest Nantes, SnowCamp, BreizhCamp: Cloud IDEs, pair programming & developer tooling
• JUG Summer Camp: Live editing, pair programming & open-source contribution workflows
• CheConf: The Path to Pair Programming in Eclipse Che, Pair Programming with Che and Atom Teletype
• Oracle Code Paris: Eclipse Che & Cloud Development showcase

Java to Kubernetes for Dummies (2022 – 2024)

Conference track delivered across major international conferences and JUGs, focused on demystifying Kubernetes for Java developers.

• Java2Days 2022, OpenSource XP 2022, DevNexus 2023 (USA), DevFest Mons, Very Tech Trip, Nantes JUG, Alpes JUG, RivieraDev 2023, Devoxx France 2023, Devoxx Belgium 2023

JKube, Kubernetes Tooling & Remote Development (2023 – 2025)

• RivieraDev 2023: JKube Remote Dev: Code with Your Cloud Services Locally
• Devoxx France 2023: JKube Remote Dev: Coder avec vos micro-services cloud… en local
• Devoxx Belgium 2023: Debugging in the Cloud, Mastered Locally with JKube Remote Dev
• RivieraJUG, MarsJUG, Poitou JUG: Advanced Java & Kubernetes workflows with JKube
• JavaLand: Kubernetes CRDs in Action with Java

Kubernetes Beyond Go & Platform Engineering (2024 – 2025)

• KubeCon India 2024: Developing Kubernetes Applications Beyond Go
• RivieraDev 2025: Developing Kubernetes Applications Beyond Go - Focus on Java, JVM ecosystems and Kubernetes APIs

Soft Skills & Non-Technical Talks

• Sunny Tech 2022: Le voyage du héros de l'IT 2 : Storytelling pour vos conférences
• RivieraDev 2023: Je brasse ma bière dans ma cuisine