Hi, I'm Daan van Gorkum 👋

Senior Site Reliability Engineer & Systems Architect based in Singapore 🇸🇬
Specializing in bare-metal Linux platforms, global traffic engineering (BGP / DNS / Anycast), and infrastructure automation.

Website • Writing • LinkedIn • AS209792 • Email

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🌐 What I Do

Over the past decade across Cloudflare, Adyen, and Imperva / Thales Cybersecurity, I have designed and operated infrastructure spanning the physical layer up to distributed cloud platforms:

• Global Edge & Traffic Management: Operating external DNS, Anycast routing, CDNs, and multi-homed BGP meshes handling terabits of transit traffic.
• Bare-Metal Lifecycle & Automation: Zero-touch server provisioning, UEFI automation, hardware validation frameworks, and out-of-band management.
• Resilience & Storage Systems: Distributed storage at scale with CEPH, progressive delivery with Kubernetes & Argo Rollouts, and time-series anomaly detection with VictoriaMetrics Anomaly.
• Systems Tooling: Building lightweight, reliable tools and automation in Go and Python.

Outside of day-to-day engineering, I operate my own autonomous system (AS209792), tinker with ARM64 / RISC-V hardware in my homelab, and volunteer as an electronics repair coach with Repair Kopitiam to divert consumer electronics from Singapore's landfills.

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🛠️ Systems & Technologies

Languages       :: Go, Python (FastAPI, Django), Bash, SQL, PHP, Lua, C
Networking      :: BGP, Anycast, ECMP, WireGuard, DNS (BIND 9, PowerDNS), NGINX, HAProxy, DWDM
Platforms & OS  :: Debian, RHEL, CentOS, Gentoo, Bare-Metal / UEFI, Proxmox VE, CEPH, Kubernetes
Observability   :: Prometheus, VictoriaMetrics (Anomaly Detection), Grafana, ClickHouse
Automation & CI :: SaltStack, Terraform, Puppet, Argo Rollouts, Argo CD, GitLab CI/CD

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🚀 Selected Projects

Project	Description	Stack
BCRSTracking	Real-time telemetry & bin capacity monitoring for Singapore's Beverage Container Return Scheme. (Story)	Go • ClickHouse • K8s • Prometheus
XYZ.FRL	Privacy-first, stateless Dynamic DNS service. No account required, simple API.	Go • Anycast DNS
netbox-more-metrics	NetBox plugin exposing granular Prometheus metrics from DCIM and IPAM data.	Python • NetBox • Prometheus
vault-backup	High-performance CLI for streaming HashiCorp Vault Raft snapshots to S3 storage.	Go • HashiCorp Vault • AWS S3
netbox-field-permissions	NetBox plugin enforcing fine-grained user/group object field-level write permissions.	Python • Django • NetBox
IMGDumper.nl	Fast direct image hosting platform, running continuously and reliably since 2007.	PHP • Linux Storage
KopiTool	Repair ticketing and diagnostics platform built for Repair Kopitiam to track e-waste reduction.	Python • Django • PostgreSQL

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✍️ Recent Articles & Notes

• Why I Built BCRS Tracking — Tracking Singapore's smart recycling machines with Go, ClickHouse, and Prometheus.
• The 'Datacenter at Home': A Multi-Homed BGP & WireGuard Mesh Architecture — Applying hyperscale datacenter design principles to AS209792.
• Easy and free Dynamic DNS — A lightweight, stateless Dynamic DNS service built with FastAPI.
• A Timelapse System: The Start — Capturing decades-long construction projects with Ceph, Kubernetes, and Python.

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📡 Connect & Telemetry

• Homepage & Blog: dj.vg
• BGP / Autonomous System: AS209792 on bgp.tools
• LinkedIn: linkedin.com/in/daan-van-gorkum/
• Direct Email: me+github@dj.vg