Secure infrastructure architecture
Design and review of Linux, container, network and service architectures with security and maintainability built in.
Consulting
Secure infrastructure. Structured technical delivery.
Independent support for organisations planning, improving or migrating complex IT services — from requirements and technical architecture to implementation, coordination and operational handover.
IAM, SSO & federation
OIDC, SAML, MFA, access architecture and secure integration of identity into distributed services.
Automation & observability
Infrastructure automation, monitoring, logging, alerting and operational workflows that reduce manual risk.
Hardening & resilience
Security reviews, service hardening, availability design, operational readiness and recovery-focused engineering.
Technical project leadership
Requirements, delivery planning, stakeholder coordination, risk and dependency tracking, implementation oversight and operational handover across infrastructure, security and platform teams.
Migration & consolidation
Assessment and transition support for open-source or self-managed platforms where control, interoperability and sovereignty matter.
Relevant delivery experience
Background includes technical responsibility for a production BigBlueButton cluster, architecture and project delivery for university-wide eduVPN infrastructure, and coordination of credential-leak monitoring processes. These examples come from professional employment, not 113 HASH client contracts. Read the experience overview.
Engagements
Designed to stay flexible: a focused review can be useful without committing to a long consulting programme.
Review
Architecture review, security assessment, troubleshooting or a second technical opinion.
Delivery
Hands-on implementation support, migration planning, integration and technical project delivery.
Advisory
Ongoing specialist input for teams that need senior technical guidance without a permanent additional role.
Project discussions and technical coordination are available in English or German. Scope and availability are agreed individually.