Mohammad Zein - Senior DevSecOps Engineer

Mohammad Zein

Senior DevSecOps Engineer
  • mohammadazein@gmail.com
  • Munich, Germany
  • mzein.de

About Me

Senior DevSecOps Engineer with 9+ years of experience building and securing cloud-native platforms. Specializing in Identity and Access Management, Zero Trust architecture, and AWS infrastructure at scale. Former CTO who chose to go deep into platform engineering — bringing both business context and technical depth to every system I build. Certified Kubernetes Administrator currently leading IAM and infrastructure initiatives across 100+ microservices and 10+ AWS accounts.

Work Experience

Sep 2021 - Present
Jochen Schweizer mydays group
Munich

Senior DevOps / Backend Engineer

  • Designed and implemented federated authentication across multiple identity providers (Amazon Cognito, Azure AD, Cidaas, Ory) using OIDC, enabling secure Single Sign-On across 100+ microservices.
  • Enforced Zero Trust architecture across Kubernetes workloads using Ory Oathkeeper, Istio AuthorizationPolicies, and EnvoyFilters.
  • Managed 10+ AWS accounts with landing zone architecture, reserved instances, and IAM-based access control using Terraform.
  • Architected multi-VPC network topologies with Transit Gateways, private subnets, NAT Gateways, and VPN tunnels to ensure secure and scalable cross-environment connectivity.
  • Enhanced observability and incident response using Datadog, Prometheus, and AWS CloudWatch.
  • Built microservices in Go to support OIDC-based authentication and user session management.
  • Collaborated across departments to align infrastructure and security initiatives with product and business requirements.
Oct 2016 - Jul 2021
Kamkalima
Beirut

CTO / Software Engineer

  • Joined as the founding engineer and built the entire platform from scratch across frontend, backend, and mobile.
  • Hired, mentored, and led a cross-functional team of 7 engineers spanning frontend, backend, mobile, and data science.
  • Transitioned focus to DevOps — automating deployments with AWS CodeDeploy, Launch Templates, and ELB.
  • Established CI/CD pipelines using Bitbucket Pipelines, enabling fast and reliable delivery cycles.
  • Collaborated closely with C-level management and cross-departmental teams to align technical strategy with business goals.

Tech Skills

  • AWS
  • Azure AD
  • Kubernetes
  • Docker
  • Terraform
  • Terragrunt
  • Istio
  • Envoy
  • Helm
  • Flux CD
  • IAM / ORY
  • Datadog
  • CloudWatch
  • GitLab
  • Git
  • Go
  • Python
  • Node.js
  • PHP

How I Work

  • Full Ownership
  • Transparency
  • Impact-Driven
  • Accountability
  • Value-Oriented

Education

  • BSc in Information Technology and Computing
    Arab Open University, Beirut
    2010 - 2016

Certifications