# Nörttilaakso

> Finnish IT consultancy specialising in Linux systems, open source infrastructure, and low-level software engineering.

Nörttilaakso is a Helsinki-region IT consultancy (Järvenpää, Finland) providing expert services
across the full stack of modern Linux-based computing — from bare-metal systems programming and
custom kernel builds to web infrastructure, database engineering, and embedded devices. We favour
open source, compile from source where it matters, and prefer deep technical solutions over
off-the-shelf vendor lock-in.

## Services

- [Systems Programming](/services/systems): C, C++, and Rust development for Linux — daemons,
  performance-critical tooling, custom runtimes, and hardware-adjacent software
- [Linux Infrastructure](/services/infrastructure): Server administration, custom kernel builds,
  distribution-specific optimisation, security hardening, and network stack tuning
- [Open Source Consulting](/services/opensource): Architecture advice, code review, and
  integration work for open source stacks (PostgreSQL, nginx, OpenSSL, and others)
- [Embedded & IoT](/services/embedded): ARM Linux (Raspberry Pi and similar), BLE/Bluetooth
  integration, sensor data pipelines, and edge computing
- [Database Engineering](/services/database): PostgreSQL administration, replication, query
  optimisation, and schema design; logical replication between nodes
- [Network & DNS](/services/network): DNS infrastructure (PowerDNS, DoT/DoH forwarding),
  nftables firewalling, traffic analysis, and network security
- [Programming Education & Lecturing](/services/education): Courses and workshops on systems
  programming, Linux internals, Rust, and C for developers and technical teams
- [Web & Backend Development](/services/web): Backend services, APIs, and performance-oriented
  web infrastructure on Linux

## About

- [About Nörttilaakso](/about): Background, values, and approach
- [Technology Stack](/about/stack): The tools and platforms we work with day-to-day
- [Open Source Contributions](/opensource): Projects and contributions we maintain or participate in

## Contact

- [Contact & Availability](/contact): Enquiries, project scoping, and availability