Dinko Korunic dkorunic

Hi, I'm Dinko Korunić

Systems engineer and security practitioner based in Zagreb, Croatia. Currently Principal Cloud Architect at HAProxy Technologies and Executive Product Manager at Crossvallia.

Over the last 20+ years I have worked as a security advisor and systems integrator, with a focus on Linux internals, high-availability infrastructure, observability and network performance. Previous engagements span the Croatian President's Office, multiple governments, the Croatian National Bank, private banks, ISPs and Alexa top-300 sites.

Education: MSc, University of Zagreb

"If I had 8 hours to chop down a tree, I would spend 6 of those hours sharpening my axe."

What I work on

Load balancing & application delivery — day job at HAProxy Technologies.
Linux & kernel tooling — eBPF, tracing, performance, filesystem behaviour.
Systems programming — primarily Go and Rust, with C and Python where they fit best.
Open-source utilities that scratch real operational itches (see below).

Selected projects

Project	Description	Language
betteralign	Detect and fix suboptimal struct field layout in Go: reduces padding and GC pointer bytes, rewrites files while preserving comments. A drop-in fieldalignment replacement.	Go
iSMC	Apple SMC CLI for macOS — temperature, fan, battery, power, voltage and current sensors on Intel and Apple Silicon (M1–M5), with table, JSON and InfluxDB output.	Go
pktstat-bpf	eBPF-based Ethernet traffic monitor using TC, XDP, kprobes and cgroups.	C / Go
pktstat	Lightweight per-connection network traffic monitor for IPv4/IPv6, TCP/UDP/ICMP — AF_PACKET on Linux, libpcap elsewhere.	Go
e-dnevnik-bot	Grade/exam alerting bot for the Croatian e-Dnevnik school system.	Go
findlargedir	Fast Rust CLI to find "black hole" directories with millions of entries, without reading them.	Rust
dnstrace	DNS query tracing and analysis tool.	Go
uptime_hack	Small Linux kernel module that tampers with reported uptime.	C
axfr2hosts	Fetches DNS zones via AXFR and dumps them in Unix `hosts` format.	Go
gopherd	Minimal PID 1 init and service supervisor for Docker/Kubernetes containers, including rootless. Dependency ordering, readiness gates (health checks, sd_notify), restart policies, hot reload, and a runtime control socket. Single static Go binary, zero deps.	Go
minifind	Fast, parallel find(1) reimplementation in Rust: a work-stealing directory walker with find-compatible predicates.	Rust
astro-recommender	What to image tonight: ranks deep sky targets and comets for your location, weather, Moon and telescope.	Go
secretbro	Interposition library for filesystem access control of Kubernetes secrets directories.	Rust