Filigran

Filigran builds cybersecurity software with a focus on threat intelligence and adversarial validation. The company's approach is rooted in the open source movement: it publishes free, community-driven tools as part of its working practices, and its products are used to protect thousands of organizations worldwide.

The firm operates across EMEA, North America and APJ, serving the cybersecurity and threat intelligence sectors. Technical work spans threat intelligence, adversarial validation, open source software and cybersecurity software engineering, alongside the maintenance of the company's freely available tooling.

Filigran is organized around small, high-impact teams in which advanced skills and diverse perspectives shape product decisions. The company favors autonomy over micromanagement, and is remote-first and async-first, valuing clear communication and ownership over face time. It prioritizes product quality and technical excellence over rapid expansion, with thoughtful review of code contributions and an emphasis on minimizing technical debt.

Its stated working culture blends craftsmanship with fulfillment at work, treating professionalism and enjoyment as compatible.