Nix & NixOS
We've been building with Nix since the early days. We maintain core ecosystem tools, contribute upstream, and help teams go from first evaluation to production deployment.
Nix is a package manager that builds software reproducibly — every dependency pinned, every build identical across machines. NixOS is a Linux distribution built entirely on Nix, where every package, service, and configuration is declared in code.
That means infrastructure you can audit, rebuild from scratch, and roll back in seconds. No more "works on my machine." No more snowflake servers. No more dependency hell.
If you're evaluating Nix, already using it and hitting walls, or running NixOS in production and need expert support — we're the team that wrote the tools you're probably already using.
Reproducible builds
Every build produces the same output regardless of the machine running it. Pin dependencies exactly. No surprises in production that didn't happen in CI.
Atomic upgrades & rollbacks
System updates are atomic. If something breaks, roll back to the previous generation in one command. No partial states, no broken systems.
Declarative everything
Your entire system — packages, services, users, firewall rules — described in a single configuration file. Version it, review it, reproduce it anywhere.
Dev environments that just work
nix develop gives every developer the exact same toolchain. No "install this version of Python" instructions. Clone the repo, enter the shell, start working.
Nix adoption
We help teams evaluate and adopt Nix — from setting up flakes and dev shells to migrating CI pipelines and deploying NixOS in production.
NixOS infrastructure
Production NixOS deployments with proper module architecture, secrets management, automated provisioning, and monitoring. Bare metal or cloud.
Build system optimization
Slow builds killing your team's velocity? We optimize Nix expressions, set up binary caches, parallelize builds, and make your CI pipeline fast.
Nix packaging
Need software packaged for Nix? We package applications, libraries, and toolchains — handling cross-compilation, custom patches, and upstream contributions to nixpkgs. From proprietary vendor SDKs to complex build systems, we've packaged it all.
Migration & rescue
Inherited a messy Nix setup? We've seen it all — broken flakes, unmaintained overlays, pinned-to-ancient-nixpkgs configs. We'll clean it up and document it.
Many of the tools your Nix stack depends on — we built them and we maintain them. When you work with Numtide, you're working with the people who wrote the code.
"Among the very best teams I've worked with. Foremost experts in their craft who go out of their way to ensure success."
"Helped us profile kernel locking issues with no prior experience. Happy to use them again for any level of work."
Need Nix expertise?
Whether you're adopting Nix, scaling NixOS in production, or untangling a messy setup — let's talk.