Alexander Eldeib
Principal Engineer at CoreWeave
Cambridge, Massachusetts, United States
Summary
🤩
Rockstar🎓
Top SchoolAlexander Eldeib is a Principal Engineer with 11 years of experience specializing in backend systems, cloud IaaS, and Kubernetes-focused infrastructure. He has driven reliability and performance across large-scale Azure services and AKS, contributing to prominent open-source projects like kubebuilder, controller-runtime, and azure-cli extensions. Comfortable at the intersection of DevOps and backend development, he has shipped features for node provisioning, multi-arch builds, CI/CD automation, and AI data-plane SDKs while improving testing and cross-platform compatibility. As an engineering manager at Microsoft and Cohere, he led teams delivering GPU/RDMA infrastructure and production-grade node lifecycle tooling for LLM training and serving. Based in Cambridge, MA, he pairs a pragmatic production mindset with an obsession for low-level tinkering—Verilog, PXE-booting custom OS images, and bare-metal Kubernetes experiments—soften by a surprisingly persistent struggle with CSS. His work demonstrates a rare blend of systems-level curiosity and production-grade delivery across cloud-native and Azure ecosystems.
11 years of coding experience
10 years of employment as a software developer
Bachelor’s Degree Computer Science, Bachelor’s Degree Computer Science at Harvard University
Stackoverflow
1reputation
2kreached
1answer
1question
Github Skills (68)
controller10
python10
testing10
test-framework10
bash10
microsoft-azure10
azure-cli10
performance-testing10
azure-aks10
asp-net10
automation10
automation-testing10
ci-cd-pipeline10
app-insights10
azuread10
Programming languages (21)
Github contributions (5)
Azure/AgentBaker
Apr 2020 - Jan 2023
Agent Baker is aiming to provide a centralized, portable k8s agent node provisioning lib as well as rich support on different OS image with optimized k8s binaries.
Role in this project:
Back-end Developer & DevOps Engineer
Back-end Developer & DevOps EngineerContributions:19 releases, 1467 reviews, 1300 commits in 2 years 9 months
Contributions summary:Alexander contributed to the `azure/agentbaker` repository by implementing container data relocation, a feature that enabled movement of container data. They also fixed several missing template functions, which likely impacted the functionality and proper execution of the project. Furthermore, the user addressed review feedback and adjusted code formatting while making adjustments for the new CVM build. The user updated the tool to incorporate multiarch capabilities, aligning with the project's agent node provisioning library.
k8sprovisioningagentvhdos
kubernetes-sigs/cluster-api-provider-azure
Apr 2019 - Feb 2022
Cluster API implementation for Microsoft Azure
Role in this project:Backend Developer
Backend DeveloperContributions:211 reviews, 57 commits, 49 PRs in 2 years 10 months
Contributions summary:Alexander primarily focused on improving the code comments and addressing behavior alignment issues within the `kubernetes-sigs/cluster-api-provider-azure` repository. They implemented changes across multiple files, including services related to subnets, load balancers, virtual machine extensions, security groups, public IPs, virtual machines, and route tables. The contributions involved modifying code to align comments with the actual implementation and correcting errors.
cluster-apimicrosoft-azurek8s-sig-cluster-lifecyclek8s-provider-azure
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