Founder of Hercules CI, the CI/CD service for Nix-based projects.
He's the author of Arion, a docker-compose wrapper for Nixified local development, gitignore.nix and every now and then he's involved with the NixOS module system, pre-commit-hooks.nix and dockerTools.
roberth on GitHub and IRC
Automating deployment with Hercules CI and NixOps
Introduction to Hercules CI, NixOps and a step by step demonstration of setting up a continuous delivery pipeline with these tools.