Kéo BUN

Paris · France · +33 7 50 71 99 30 · keo.khemara.bun@gmail.com

DevOps/SRE Engineer with expertise in resilient cloud infrastructures and GitOps workflows. Former Operations Director with 7+ years of experience managing critical operations, now specializing in multi-AZ architectures, containerization, and infrastructure automation.

My technical background from EPITECH combined with recent DevOps certification has allowed me to develop advanced skills in cloud technologies, demonstrated through substantial personal projects including a multi-AZ AWS infrastructure and a 5-node Proxmox hyperconverged homelab.

Currently seeking DevOps/SRE opportunities where I can leverage my unique combination of operational leadership experience and technical expertise.

Tech Stack

AWS Kubernetes Terraform Ansible Docker Prometheus Grafana GitHub Actions
Infrastructure & Virtualization
  • AWS (EC2, EKS, VPC, IAM, S3, Route53)
  • Multi-AZ Architecture Design
  • Proxmox VE (Cluster, HA)
  • Ceph Storage (MON/OSD/MGR)
  • ZFS Storage Management
Containers & Orchestration
  • Docker & Docker Compose
  • Kubernetes (EKS)
  • Helm Charts
CI/CD & GitOps
  • Terraform IaC
  • Ansible Automation
  • ArgoCD
  • GitHub Actions
Networking & Security
  • MikroTik RouterOS
  • Multi-VLAN Architecture
  • OSPF Dynamic Routing
  • Zero-Trust Segmentation
  • WireGuard VPN
Monitoring & Observability
  • Prometheus
  • Grafana
  • AlertManager

Featured Projects

DevOps OpenDAoC - AWS Multi-AZ Infrastructure

Project Repository

A complete GitOps infrastructure deployment for a game server, featuring:

  • Multi-AZ high-availability architecture on AWS (99.9% SLA) with rapid recovery time (MTTR < 15 min)
  • Complete GitOps workflow: Terraform for IaC, ArgoCD for continuous deployment, GitHub Actions for CI/CD
  • Advanced security practices: network segmentation, secure secrets management, least-privilege IAM
  • Complete observability stack: Prometheus/Grafana with Slack webhook alerts, custom dashboards
  • Backup and disaster recovery strategy with Velero: EBS snapshots, 30-day retention
January 2025 - March 2025

Homelab - Hyperconverged Infrastructure

Advanced self-hosted infrastructure for learning and testing

A comprehensive homelab environment featuring:

  • Multi-site architecture combining a local 5-node Proxmox cluster and OVHCloud dedicated server for critical services
  • Main FTTH link with automatic failover to 5G backup for redundant connectivity
  • Secure WireGuard tunnel between sites enabling synchronization, replication and automated backups
  • Tri-replicated Ceph cluster with 3 monitors for resilient and performant storage
  • Advanced Multi-VLAN network architecture and zero-trust segmentation via MikroTik RouterOS
  • 10Gbps backbone with OSPF dynamic routing and 802.3ad link aggregation
July 2023 - Present

Experience

Chief Operating Officer / General Manager

BNS Sécurité - Paris, France

BtoB private security company which provided services to the major companies of the construction and real estate industry (Vinci, Bouygues, Eiffage, Nexity, etc.) since 2002.

On Field Management
  • Security guard / Fire safety unit and Electronic security systems services
  • Recruitment, supervision and management of company employees (~40 guards)
Day to day Operations
  • Workers schedule management / payslip and invoicing interface
  • Operational monitoring of the services and providers/contractors
  • Monitoring of Key Performance Indicators
  • CNAPS regulatory monitoring
Business development
  • Request For Proposal / Quotation management
  • Identifying organic growth opportunities
  • Key Account commercial prospection
  • Development and deployment of new IoT services (Access control systems/Alarms/ CCTV/Turnstile and barrier gate system)
October 2015 - December 2022

Operations and Development Manager

BNS Sécurité - Paris, France
  • Supervision of on-site teams (~7 guards)
  • Participation in the company's commercial development strategy
  • Study and deployment of new operating support tools (DMR radio / Lone Worker Protection smartphone / NFC patrol control system)
February 2015 - September 2015

Development Manager

BNS Sécurité - Paris, France
  • Study and improvement of access control services
  • Assistance with the business development of the company (prospecting)
  • Study and deployment of new operating support tools (DMR radio / Lone Worker Protection smartphone / NFC patrol control system)
December 2012 - January 2015

Web Developer Internship

ALTRAN CIS - Asnières-sur-Seine, France
  • Redesign of a showcase site for an NGO (Enfants du Mékong)
  • Project Owner Support
May 2011 - October 2011

IT Tech Support

BNS Sécurité - Paris, France
  • Installation, commissioning and maintenance of computer equipment
  • Support and assistance dedicated to the company's IT equipment
April 2009 - November 2012

Education

DataScientest - Paris

DevOps Engineer Certification
  • RNCP 36061 - Level 6 - DevOps System Administrator
  • Infrastructure as Code with Terraform and Ansible
  • Containerization (Docker, Kubernetes)
  • CI/CD with GitHub Actions and ArgoCD
  • Monitoring and Observability (Prometheus, Grafana)
  • AWS Cloud Architecture
January 2024 - March 2025

Epitech - Paris

Master 2 Degree - Information's Technology Expert
March 2010 - May 2015

Tecnológico de Monterrey - México

International exchange program - Campus Guadalajara
August 2013 - June 2014

Ecole Nationale Supérieure de la Police - Lyon

Private Security Company Manager Training
May 2013 - July 2013

Skills

Technical Skills
  • Infrastructure as Code (Terraform, Ansible)
  • Cloud Infrastructure (AWS, multi-AZ architectures)
  • Containers and Orchestration (Docker, Kubernetes)
  • CI/CD and GitOps (GitHub Actions, ArgoCD)
  • Monitoring and Observability (Prometheus, Grafana)
  • Networking (VLANs, OSPF, Zero-trust)
  • Programming (Bash, Python, C/C++)
Soft Skills
  • Observer
  • Committed
  • Autonomous
  • Organized
  • Altruistic
  • Empathetic
  • Curious
  • Funny
Languages
  • French (native)
  • English (C1 - professional proficiency)
  • Spanish (C1 - professional proficiency)
  • Khmer (native)
  • Italian (A1 - basic)

Interests

  • New Technology
  • Radiocommunications
  • Taekwondo
  • Nature
  • Travel
  • Cooking