Mario Manno
Software Developer at SUSE
Cologne Bonn Region Germany
Summary
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Rockstar🎓
Top SchoolMario Manno is a software developer with 14 years’ experience building backend systems and DevOps tooling, currently contributing to Rancher Fleet at SUSE from the Cologne/Bonn region. He blends deep infrastructure knowledge—BOSH, Kubernetes, Fleet—and practical security experience from earlier PCI/forensics work, enabling reliable cluster management and deployment automation. His open-source contributions include stabilizing critical projects like Rancher, Fleet and Cloud Foundry BOSH and enhancing a Devise security extension and a Go Kraken API client, demonstrating breadth across Go, Ruby, and CI/CD. He has repeatedly improved build/test pipelines and cluster integrations, often focusing on resiliency (dependency fixes, e2e workflows, image/stemcell fixes) rather than flashy features. Colleagues describe him as a pragmatic engineer who pairs systems-level insight with hands-on coding and mentoring.
14 years of coding experience
4 years of employment as a software developer
Master of Arts (M.A.), Computer Science for the Humanities, Master of Arts (M.A.), Computer Science for the Humanities at Universität zu KölnFachinformatiker Anwendungsentwicklung, Fachinformatiker Anwendungsentwicklung at Universität Paderborn
English, German
Stackoverflow
1,420reputation
195kreached
16answers
4questions
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Github Skills (55)
devise10
kubernetes10
docker10
container10
apidoc10
back-end-development10
scripting10
api-client10
testing10
fleet10
bitcoin10
bitcoins10
dockers10
cicd10
kraken10
Programming languages (20)
Github contributions (5)
rancher/fleet
May 2022 - Jan 2023
Deploy workloads from Git to large fleets of Kubernetes clusters
Role in this project:
Back-end & DevOps Engineer
Back-end & DevOps EngineerContributions:696 reviews, 294 commits, 788 PRs in 8 months
Contributions summary:Mario primarily focused on improving the infrastructure and build process for the `rancher/fleet` project. They updated dependencies, including a critical JSON library, to address crashes and improve stability. The user also added and modified end-to-end (e2e) testing workflows for both single and multi-cluster deployments. They made modifications to the CI/CD pipeline, by removing a linter from Drone CI.
clusterskubernetes-clustersk8skubernetesgitops
cloudfoundry/bosh-cli
Mar 2017 - Feb 2018
BOSH CLI v2+
Role in this project:DevOps Engineer
DevOps EngineerContributions:19 commits, 2 PRs, 23 pushes in 11 months
Contributions summary:Mario primarily contributed to the automation and testing infrastructure within the `bosh-cli` repository. They added a PowerShell script to run integration tests, demonstrating familiarity with Windows-based testing environments. Furthermore, the user updated the project's dependencies by integrating a newer version of gomock, a popular Go mocking framework, and made changes in cloud and deployment mocks to leverage these new versions. Backwards compatibility for the set_disk_metadata CPI method was implemented, showing an understanding of cloud provider integration nuances.
boshcloud-foundrycloudfoundrypcfbosh-cli
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