Razvan – Linux, Kubernetes, Ansible, experts in Lemon.io

Razvan

From Czech Republic (UTC+2)flag

Site Reliability Engineer|Senior
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Razvan – Linux, Kubernetes, Ansible

Razvan is a senior Site Reliability Engineer with nearly 20 years of IT experience, spanning Linux infrastructure, systems engineering, and cloud architecture. He has led technical delivery across complex infrastructure projects and regulated environments, combining hands-on engineering with automation, infrastructure reliability, and architectural design. Since 2023, he has led the technical delivery of 10 client engagements across regulated industries, including healthcare, insurance, banking, manufacturing, and energy.

19 years of commercial experience in
Administration
Architecture
Cloud computing
Data analytics
Govtech
Healthcare
Networking
Sales
Telecommunications
Open source
Enterprise software
Hardware
Software development
Main technologies
Linux
12 years
Kubernetes
12 years
Ansible
9 years
Bare metal provisioning
4 years
Additional skills
Vmware
Cisco
Cloud Architecture
DevOps
AWS
Microsoft Azure
Terragrunt
Terraform
Groovy
Docker Compose
Docker
Jenkins
Bitbucket Pipelines
Docker Swarm
Manual Testing
System administration
Network administration
QA Automation
OpenShift
API Testing
Embedded Linux
Bash
Ceph
API
Integration Testing
Serverless Computing
OS administration
Networking
Software design
Design system
Fiber
FastAPI
GitHub Actions
Databricks
Helm
ElasticSearch
Perl
Unix
Direct hire
Possible
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Experience Highlights

Technical DevSecOps Lead / Cloud Pre-Sales Architect (previously Cloud Architect / Tech Lead)
May 2022 - Ongoing4 years 5 months
Project Overview

A multi-tenant Azure SaaS platform for Swiss health insurers, built with a joint 18-person team (mostly partner engineers). Launched at the Swiss Health Tech Forum and won multiple Swiss health insurers as clients. Technical delivery of 10 client engagements since 2023, from pre-sales and architecture through implementation, across health, insurance, banking, manufacturing, luxury, gaming, energy and media in Switzerland and CEE.

Responsibilities:
  • Own the technical delivery of 10 client engagements; lead delivery teams of up to 18 engineers across TrustSoft and partner companies, plan sprints in Jira and mentor engineers on Kubernetes and Terraform.
  • Flagship platform: co-designed it as Product Owner on TrustSoft's side, led the joint 18-person team, and owned delivery, architecture, development, Terraform, GitOps and security hardening.
  • Defined the security baseline (Entra ID, network access controls, on-premises container image scanning, hardened Kubernetes) and containerized and migrated the client application.
  • Led OpenShift-to-ROSA migrations for Swiss government and health-sector clients, and a greenfield GxP-compliant AWS landing zone with multi-account governance.
  • Cut AKS infrastructure cost by about 40% by moving from fixed node pools to autoscaling.
  • Designed an ArgoCD GitOps pattern with ApplicationSets, umbrella Helm charts and environment-aware namespace lifecycle.
  • Developed a cross-subscription Azure administration app (Python FastAPI, App Service, Managed Identity) and led Databricks infrastructure deployment and automation.
  • Pre-sales: authored AWS MAP proposals, delivered TCO modeling and a 790-server estate discovery for a Swiss manufacturer's migration business case, and represented TrustSoft at AWS Summit Zurich.
Project Tech stack:
AWS
Microsoft Azure
Kubernetes
Terraform
Terragrunt
Helm
GitHub Actions
Python
FastAPI
Databricks
OpenShift
Software Design Engineer III (Senior)
May 2017 - May 20225 years
Project Overview

Maintained and automated SAP's global logging platform (Elasticsearch) serving 800+ engineers, across clusters in the US, EU and China.

Responsibilities:
  • Designed a Python self-templating solution adopted by 300+ teams, including US Government/DoD, French Government and China-region deployments.
  • Developed microservices and containerized custom applications on previously unused servers across Asia, the US and Europe, enabling automated deployment and self-healing of Elasticsearch clusters.
  • Architected and automated the migration of self-managed Elasticsearch clusters to Elastic's managed SaaS on AWS.
  • Maintained and automated the global logging platform for 800+ engineers, including root-cause analysis of severe outages.
  • Developed and maintained Ansible and Terraform workflows for US, EU and China clusters.
Project Tech stack:
Python
Terraform
Ansible
ElasticSearch
AWS
Docker
Kubernetes
Jenkins
Groovy
Senior Software Engineer II
Nov 2014 - May 20172 years 6 months
Project Overview

Release-validation automation for SUSE Linux Enterprise and openSUSE Leap, and early validation of SUSE's Ceph cluster solution before it became an official product.

Responsibilities:
  • Developed the automation that validated every SUSE Linux Enterprise and openSUSE Leap release across all layers, from kernel to UI (OpenQA; Perl, Python, Bash), working directly with the openSUSE chairman.
  • One of the first engineers to validate SUSE's Ceph cluster solution before it became an official product; contributed to containers, Kubernetes, CaaSP and Crowbar.
Project Tech stack:
Linux
Perl
Python
Bash
QA Automation
Ceph
Kubernetes
Docker
UNIX/AIX Administrator II
Feb 2012 - Oct 20142 years 8 months
Project Overview

UNIX/AIX administration and infrastructure support for more than 800 IBM Power7 systems across two enterprise data centers.

Responsibilities:
  • Operated 800+ IBM Power7 systems across two Novartis/Sandoz data centers.
  • Built and maintained PowerHA clusters, ran OS migrations and DR tests.
  • Kept systems stable during critical incidents, following ITIL.
Project Tech stack:
Unix
OS administration
Bash
System administration

Education

2005
Telecommunications
Graduated with Diploma
2009
Industrial Informatics
Attended, no degree (2005–2009) / Not completed

Languages

German
Intermediate
Czech
Pre-intermediate
Romanian
Advanced
English
Advanced

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