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Guillermo
Peitzner

Senior Software Engineer

I build scalable full-stack applications, cloud-native infrastructure, and AI-powered tools — and help engineers grow along the way.

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Guillermo Peitzner — Kubestronaut

Services

Four areas where I focus my work.

Full-Stack Development

End-to-end web application development — from pixel-perfect frontends to scalable backend services and API integrations. Experienced with React, Next.js, Node.js, TypeScript, and enterprise systems.

ReactNext.jsNode.jsTypeScriptPostgreSQL

DevOps & Kubernetes

Design and manage cloud-native infrastructure with Kubernetes, CI/CD pipelines, GitOps workflows, and observability tooling. CKA, CKS, CKAD, KCNA, KCSA certified — Kubestronaut.

KubernetesDockerGCPAWSCI/CD

AI & MCP Development

Build intelligent applications including chatbots, LLM-powered tools, and Model Context Protocol (MCP) servers for smart service delivery. From prototype to production.

LangChainMCPLLMsPythonNode.js

Tech Mentoring

One-on-one mentoring for engineers at any stage — career transitions, interview prep, code reviews, and architectural guidance. Former university lecturer with a passion for teaching.

Code ReviewCareerAlgorithmsSystem Design

Certifications

Verified expertise from The Linux Foundation, W3Schools, and Scrum Inc.

K★
CKS
CKA
CKAD
KCSA
KCNA
LFCS
LFCA
JSNAD
JSNSD
RPO
RSM
W3TS

Tech stack

Tools and technologies I work with daily.

TypeScriptReactNext.jsNode.jsPythonGoKubernetesDockerHelmTerraformGCPAWSAzurePostgreSQLRedisGraphQLRESTgRPCCI/CDGitOpsArgoCDGitHub ActionsJenkinsContentfulLangChainLinuxBash

Let's build something

If the work sounds like a fit, reach out.

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