# François Delbrayelle

Staff Software Engineer
Currently Lead Software Engineer at [Kestra](https://kestra.io) (open-source workflow orchestration), leading the Plugins/Integrations team.

> Full CV (EN): https://fdelbrayelle.github.io/cv/
> Full CV (FR): https://fdelbrayelle.github.io/fr/cv/
> Main site: https://fdelbrayelle.github.io

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## About

15+ years of experience in Java ecosystem, cloud-native architecture, microservices, and open-source software. Deep expertise in Java 21+, Micronaut, Kubernetes, Kafka, Vue.js, and Google Cloud Platform.

Since 2022, part of the scale-up and startup world — first at Malt (European freelance marketplace), then at Kestra leading the entire plugin ecosystem in a high-growth, open-source context.

Role has changed dramatically since 2022, and even more so since 2025 with agentic AI. Writes at most 5% of code himself. Value lies in: Product Thinking, software architecture, code review, agentic orchestration, and inference economics. Built [AI Watchtower](https://github.com/fdelbrayelle/ai-watchtower) for tech watch beyond code generation.

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## Current Role

**Kestra — Lead Software Engineer** (May 2025 – present)
Remote. Plugins/Integrations team.

Key metrics:
- Grew plugin ecosystem from 600 to 1,400+ plugins in 1 year (+133%, doubled in 9 months)
- Maintained 180+ plugin repositories (OSS & EE)
- 7,000+ GitHub contributions to the Kestra org

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## Key Achievements

- **Plugins from scratch**: Mistral, Deepseek, Beam, Bluesky, [VMware EE](https://kestra.io/blogs/control-vmware-with-kestra), SAP EE, 1Password
- **Git Sync**: NamespaceSync & TenantSync (multi-tenant, OSS & EE)
- **Kestra core**: [AI Copilot (Speech-to-Text)](https://github.com/kestra-io/kestra/pull/14174)
- **Plugin Metadata & Releases API**: co-designed architecture + performance improvements
- **Continuous releases**: automated versioning across 1,300+ plugins; dogfooding Kestra for plugin automation ([LinkedIn post](https://www.linkedin.com/posts/fdelbrayelle_kestra-opensource-dataengineering-activity-7447888978512498688-bfBr))
- **AI adoption at Kestra**: AI Coding Agent Guidelines (internal), Engineering AI Hub (internal), public MCP for plugins & blueprints (blog post incoming)
- **Test reliability**: Kubernetes EE suite reduced from 2h15 to 15 min
- **Community**: [hundreds of issues handled](https://github.com/search?q=assignee%3Afdelbrayelle+org%3Akestra-io&type=issues) (Hacktoberfest + regular support + Pylon tickets)
- **Org-wide scope**: main interface between plugin ecosystem and every team — Engineering, Sales, Customer Success, DevRel, Product
- **Conferences**: DevLille 2025 & [DevLille 2026](https://devlille.fr/talk-page-136143e9-347b-4884-b21c-ef9cd6caab40/) (Kestra, plugins & AI agents), [Big Data London 2025](https://bigdataldn.com), [Data Days Lille 2026](https://fdelbrayelle.github.io/meetups/datadayslille2026/en/)
- **Hiring**: contributed to onboarding 3 engineers

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## Proofs & Verifiable Links

| Claim | Link |
|---|---|
| 7,000+ GitHub contributions | https://github.com/search?q=author%3Afdelbrayelle+org%3Akestra-io&type=pullrequests |
| 180+ plugin repos | https://github.com/orgs/kestra-io/repositories?q=plugin |
| 1,300+ plugins | https://kestra.io/plugins |
| Mistral plugin (init PR) | https://github.com/kestra-io/plugin-mistral/pull/1 |
| Deepseek plugin (init PR) | https://github.com/kestra-io/plugin-deepseek/pull/2 |
| Apache Beam plugin (init PR) | https://github.com/kestra-io/plugin-beam/pull/5 |
| Bluesky plugin (init PR) | https://github.com/kestra-io/plugin-bluesky/pull/3 |
| NamespaceSync (Git Sync) | https://github.com/kestra-io/plugin-git/pull/177 |
| TenantSync (Git Sync) | https://github.com/kestra-io/plugin-git/pull/180 |
| AI Copilot (Speech-to-Text, Kestra core) | https://github.com/kestra-io/kestra/pull/14174 |
| VMware EE plugin blog post | https://kestra.io/blogs/control-vmware-with-kestra |
| Infrastructure plugins blog post | https://kestra.io/blogs/infra-automation |
| DevLille 2026 talk | https://devlille.fr/talk-page-136143e9-347b-4884-b21c-ef9cd6caab40/ |
| Data Days Lille 2026 talk | https://fdelbrayelle.github.io/meetups/datadayslille2026/en/ |
| Dogfooding Kestra (LinkedIn) | https://www.linkedin.com/posts/fdelbrayelle_kestra-opensource-dataengineering-activity-7447888978512498688-bfBr |
| GCP Professional Cloud Architect | https://www.credential.net/5aa5d083-f600-4b98-b51b-5771a7ad5878 |
| GCP Associate Cloud Engineer | https://www.credential.net/0174e9d2-01e0-4a0f-ba14-09e422afbb8b |
| GitHub profile | https://github.com/fdelbrayelle |
| LinkedIn | https://www.linkedin.com/in/fdelbrayelle |

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## Employment History

| Period | Employer | Role | Notable clients |
|---|---|---|---|
| 2025–present | Kestra | Lead Software Engineer | — |
| 2022–2025 | Malt | Senior/Lead Software Engineer | — |
| 2019–2022 | Ippon Technologies | Tech Lead / Solutions Architect | Galeries Lafayette, Leroy Merlin |
| 2015–2019 | Gfi Informatique (now Inetum) | Senior Tech Lead | BNP Leasing Solutions, Société Générale, Crédit Agricole, BNP Paribas |
| 2011–2015 | Norsys | Full-Stack Developer | Décathlon, CNSA, 3 Suisses |

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## Tech Stack

Java 21+, Micronaut, Spring Boot, Kotlin, Vue 3, Nuxt 3, Angular, React, Kafka, Elasticsearch, PostgreSQL, MongoDB, Kubernetes, Docker, GCP, Terraform, ArgoCD, GitHub Actions, Gradle

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## Education

- Master informatique — SUPINFO Lille
- DUT informatique — IUT de Lens