Maël Valais Claim this profile

@maelvls ·Toulouse, France ·maelvls.dev

193 repos
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70 following

Go 38%
Shell 12%
C++ 9%
TeX 7%
C 6%

518 contributions in the last year

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Hi! My name is Maël (prononciation). I am a software engineer living in Toulouse (France). I like to promote psychological safety through transparency, empathy and kindness. I do infrastructure software around networking and containers. After multiple technically successful projects and the realization that no user was using them, I started shifting from building software to helping out figure whether building or not building, and I discovered that "product management" is the role that fits this description.

You may read about me digging into networking, Go development, and Kubernetes on my blog.

Some of my contributions: [cert-manager][] (Go), [gitlab][] (Ruby), [boost-graph][] (C++), [auto-multiple-choice][] (C++, Perl), kubernetes-sigs/kind and kubernetes-sigs/cluster-api (Go), [ocaml-minisat][], [ocaml-qbf][], [ocamlyices2][], [opam][] (OCaml). I authored [homebrew-amc][], [touist][] (OCaml) and a couple of [vscode-extensions][].

🔰 Curriculum & contact information

System Software Engineer at CyberArk _(2021–present)_

I joined the cert-manager team at Jetstack. Jetstack was acquired by Venafi in 2021, which was acquired by CyberArk in 2024.

As part of the cert-manager core team, I mentored new contributors into merging their first pull request. During my mandate as a release lead of cert-manager, I worked on moving away from Bazel in order to reduce the friction new contributors were feeling when getting started. I worked with sig-network on the Gateway API integration in cert-manager, as well as on making the ingress resource documentation clearer for ingress controller implementors and ingress users alike.

Along with the open-source work, I contributed to Jetstack's enterprise offering, and led an effort towards customer success via lean product practices.

System Software Engineer at Ori Industries _(2019–2020)_

As a Software Engineer at Ori Industries, my main focus was to develop an edge-aware version of Cloud Foundry. Telcos would use this infrastructure platform to leverage its low-latency last-mile 5G network. With this platform, they can sell compute time to developers with a network latency of 1-2 ms, acting as a public cloud provider of their own.

As an individual contributor, I helped shape the Kubernetes components that would make up the Ori infrastructure platform. Among others, my team built a Kubernetes native API for spinning up VMs on AWS, GCP, and OpenStack and bootstrap them into Kubernetes clusters. I also worked on a custom control plane for Envoy (our platform’s data plane) inspired by Istio. I contributed to the company’s initial REST API built-in Go that used a CQRS approach and NATS for the event persistence. My main achievement as an individual contributor has been to become the go-to person anyone would come to regarding Kubernetes controllers as well as for debugging Kubernetes and network-related issues.

After a few months, I stepped up as tech lead in a team of four people. I would run the daily standups, make sure the backlog is in good shape, work with the Product Manager to flesh out stories, point the stories with the team, run a biweekly retro meeting (we ended up working in an uninterrupted sprint). Notable achievements are the “project office hours” I started; the meeting increased the cross-team communication through demos and open discussions about anything more or less related to my team’s project.

Beyond my primary assignment, I also worked with the rest of the company on topics such as

Helped grow the remote-first culture thought experiments such as the “wormhole” and by pushing for better video call quality (more than 70% of the company now equipped with proper standalone mics such as the Blue Yeti). A blog post about my experience of remote work is published here.
I initiated a movement towards transparency across the company that led to a rewrite of the “values” page. We started recording meetings and creating, for each meeting, a shared document with an agenda and collaboratively-written minutes.
Contributed to the company knowledge base on various topics such as “the git guide,” “slack etiquette,” and “recording and sharing meetings.”
Attended all weekly meetings of sig-cluster-lifecycle to keep the company up to date with upstream developments as well as advocate for our solution; contributions: kubernetes\-sigs/kind, kubernetes\-sigs/cluster-api
I helped develop a self-learning program where each engineer spends 20% of their time training on various topics. I authored a couple of blog posts and proposed learning topics engineers would pick during their training (mainly around Kubernetes controllers, networking, and Linux-y things).
I authored the technical test given to applicants and was part of the technical interviews.
I wrote multiple internal kubectl plugins for interacting with our custom resources and a tool for monitoring and removing unused VMs on OpenStack, AWS, and GCP.
I authored ngroker, a tool we used at Ori for running a shared ssh session without the hassle of exchanging ssh keys (using Github usernames).
I wrote an interactive ChatOps bot using Github Actions for applying Terraform changes through PRs.

Tools used: Go, Kubernetes, Github Actions, Helm, Terraform, AWS, GCP, OpenStack, Agile.

Fullstack Software Engineer contracted to La Banque Postale _(2019)_

As part of a network operations team, I built a web application meant to become a self-updating repository of IP assignments (as opposed to using Excel sheets), which helps the operations team plan and execute fail-overs.

Tools used: Java, Spring Boot, Typescript, Angular 2+, NgRx.

Systems Software Engineer contracted to Orange _(2018)_

As part of an operations team, I built a Terraform plugin in Go for a private cloud used within Orange (mainly interacting with VMWare vRA 7 APIs). I also worked on the continuous testing and delivery of Docker images used by application teams across the company.

Tools used: Go, Terraform, Gitlab CI, Bash, VMWare vRA 7.

Education

Ph.D. in Computer Science _(2016–2018)_

I developed touist, a compiler written in OCaml for a new logic language meant to formalize and solve problems expressed as SAT expressions. The tool is now used to teach logic to first-year students at Université Paul Sabatier in Toulouse and is used by researchers to explore new SAT encodings; see the thesis (in French).

As part of my PhD, I also helped develop a web application serving as a frontend to the compiler written in VueJS and Rust; we deployed it through Docker images built by Travis CI and run using AWS ECS.

Tools used: OCaml, Rust, Typescript, AWS ECS, Travis CI.

Contact details

[email protected] (GSuite-enabled)
+33 786484391
_Maël Valais_ on Kubernetes Slack and Gopher Slack
LinkedIn
Blog
Toulouse, France

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