Omschrijving

TOGAF-certified Senior DevOps/SRE Architect transforming mission-critical systems for Europe's leading banks, telecoms, and airlines.

With 21+ years delivering cloud platforms at ING, Rabobank, KLM, and KPN, I specialize in designing resilient, observable, zero-downtime architectures that scale. My clients trust me to:

✅ Cloud Migrations & Platform Engineering

Migrated 60+ applications to Azure/AWS with Kubernetes (Docker, Helm, Rancher)

Infrastructure as Code mastery: Terraform, Ansible for enterprise-scale deployments

✅ SRE Excellence

Built observability stacks (ELK, Prometheus, Grafana, Kafka) reducing MTTR from hours to minutes

Zero-downtime CI/CD pipelines (Jenkins, Azure DevOps) for payment/transaction systems

Defined SLIs/SLOs, error budgets, and incident response playbooks for HA environments

✅ Architecture & Leadership

Designed mainframe-to-microservices middleware (REST/SOAP, MQ integration)

TOGAF-certified: Align technology with business outcomes, cost, and risk

Mentored engineering teams on DevOps/SRE best practices (Scrum, Kanban, Spotify model)

Due to NDAs with Tier-1 clients, projects are anonymized—but I'll share detailed technical deep-dives during our call. My work delivers measurable impact: faster releases, fewer incidents, optimized cloud costs.

Technical Stack: Kubernetes, AWS, Azure, Terraform, Ansible, Jenkins, ELK Stack, Prometheus/Grafana, Kafka/MQ, Python/Java, Linux, OAuth/SSO, HashiCorp Vault

Available for 6–12+ month missions (remote/hybrid NL/CH). Daily rate: €900–1,100. Let's build platforms that don't just work—they excel.

Message me to discuss your cloud transformation, platform stability, or SRE maturity challenges.

Talen

Engels
Tweetalig / moedertaal

Voorkeuren voor werkplek

Kan op locatie werken

Almere Stad (tot 50km)

KPN
Sr. DevOps Engineer [Freelancer]
TELECOMMUNICATIE
juni 2022 - december 2025 (3 jaren en 6 maanden)
The Hague, Netherlands
• ● Owned HashiCorp Vault secret management for across enterprise domains, ensuring secure PKI and certificate handling.
• ● Led 50+ P1 incidents: triage, root cause analysis (RCA), and blameless postmortems; reduced MTTR 60% via ELK observability.
• ● Automated repetitive operational tasks and config management using Ansible (Puppet-equivalent) across 500+ nodes, reducing toil 80%.
• ● Authored 30+ runbooks and OpDocs for Vault, Kubernetes, and runtime config services to minimize operational risks.
• ● Built and enhanced observability: Grafana/Prometheus dashboards and alerts in collaboration with dev teams; cut alert fatigue 70%.
• ● Designed hybrid Kubernetes clusters on bare-metal + AWS environments with zero-downtime rollouts for scalability.
• ● Implemented central monitoring/alarming with APM (ELK stack, Elasticsearch, Neo4J) for high availability internal services.
• ● Mentored teams on SRE best practices, cloud-native design, security/vulnerability fixes, and phased domain rollouts.
Java Apache Kafka Neo4j Kubernetes Ansible
Solvinity
Sr. Engineer
DIGITAAL BUREAU & IT-CONSULTANCY
december 2020 - mei 2022 (1 jaar en 5 maanden)
Amersfoort, Netherlands
• ● Designed/implemented PaaS applications on private cloud with automated pipelines; owned end-to end reliability and performance monitoring.
• ● Defined/implemented Azure onboarding strategy; automated toil via reusable Ansible roles adopted org-wide.
• ● Led incident response and continuous improvements for distributed systems; collaborated with stakeholders for clear technical support.
• ● Integrated web/services with MQ, Kafka, security (OAuth/LDAP), and observability (ELK, Elasticsearch).
• ● Manage the delopment environment for Netherlands government department
• ● Automate the platform creation for desired team as per their needs
• ● Mentored teams on best practices using Scrum/Kanban/Agile/Spotify methodologies.
Python Kubernetes Rancher Helm Apache Kafka
ING Bank|
Sr. Cloud Engineer [Contractor]
BANKEN & VERZEKERINGEN
mei 2018 - september 2020 (2 jaren en 4 maanden)
Amsterdam, Netherlands
• ● Migrated 60+ applications to Azure cloud; implemented zero-downtime deployments and CI/CD pipelines (Azure DevOps, Jenkins, TFS).
• ● Built centralized logging/observability with ELK + Kafka; enabled real-time incident detection and RCA.
• ● Automated security solutions (nginx, Ansible, Python) for load balancing and vulnerability fixes; reduced risks in high-availability systems.
• ● Defined best practices and mentored teams on Azure onboarding; integrated AD with Azure AD for SSO.
• ● Use ansible skills to setup a platformto secure 450 application with DR and morintoring functionality
• ● Reviewed code/design/security; followed Scrum/Kanban/Agile/Spotify methodologies.
Ansible Python Apache Kafka Microsoft Azure Java