Team
Ralph Segi, CTO & Co-Founder
devs group GmbH, Kreuzlingen, Switzerland
Ralph Segi is CTO & Co-Founder of devs group GmbH in Kreuzlingen, Switzerland. On the blog, Ralph writes about Cloud & Infrastructure, Architecture, AI-Assisted Engineering, Security & Compliance, Backend — out of live devs group project work rather than out of theory.
- ralph@devs-group.ch
- Phone
- +41 (0) 76 232 44 60
- Ralph Segi on LinkedIn
What Ralph works on
As CTO, Ralph owns the technical line at devs group: architecture decisions, code reviews, and the standards every project is built to. What the team ships has passed through his hands or his rules first.
His focus is Go backends, Kubernetes and security: from the broker backend that has traded Bitcoin without incident for years, through cluster operations and upgrade paths, to the technical implementation of reporting obligations such as the Cyber Resilience Act. The articles listed below come out of exactly that work.
Day to day this means fewer frameworks and more reasoning. Every dependency has to earn its place, every architecture decision is written down, and a system is not finished until observability and rollback are in place.
Articles by Ralph Segi
Cloud & Infrastructure
Kubernetes v1.37: upgrading without downtime
Static pods break, old cAdvisor flags stop the kubelet, SELinuxMount is now on. What actually goes wrong upgrading to Kubernetes v1.37.
Cloud & Infrastructure
What Kubernetes really costs in Switzerland
A provider comparison in CHF, a fully worked cost model, and the item everyone underestimates: operations cost more than the infrastructure.
Architecture
Running MCP servers in Go in production
What the July 2026 MCP specification changes: a stateless core, OAuth instead of a shared token, and the tool design mistakes we see most often.
AI-Assisted Engineering
Guardrails for coding agents: never its own reviewer
Scale review depth by task type rather than by agent confidence. What belongs in the CI pipeline and what a human has to read.
AI-Assisted Engineering
Using coding agents in line with data protection law: the gap in the subscription
A personal Pro subscription used on company code falls under consumer terms. Which plans and hosting routes make coding agents compliant.
Security & Compliance
Implementing the CRA reporting obligation from 11.9.2026
Twenty-four hours to the first report. What you need in place in SBOM, monitoring and reporting chain before the Cyber Resilience Act applies.
Architecture
Why we build critical backends in Go
Not because of the benchmarks. Because of what a team can still understand after three years.
Cloud & Infrastructure
Kubernetes is not a goal
When a cluster earns its keep, when a single VM is the better architecture, and how to tell the difference.
Backend
Idempotency: the least conspicuous feature of a payments API
Networks are unreliable and clients retry. Why an idempotency key is not a detail but the foundation.
Cloud & Infrastructure
Three dashboards instead of thirty
Observability rarely fails because of the tooling. It fails because nobody looks at it any more.