# Principal Software Engineer - XTM One

The Company Founded in 2022, Filigran is a global cybersecurity company on a mission to empower defense teams to be proactive through open-source solutions that uncover threats and drive action. Filigran stands out in the cybersecurity ecosystem through its open-source, AI-powered and threat-informed approach to Continuous Threat Exposure Management (CTEM). Our eXtended Threat Management (XTM) platform brings together threat intelligence, exposure validation and cyber risk reduction, enabling organizations to better understand their threat landscape and take action. At the heart of Filigran is our open-source approach. Our vision is to unite defenders into a global community to make security more open, resilient and collaborative. As Filigran continues to scale globally, we are building the organization, infrastructure and capabilities needed for our next stage of growth. How we scale matters just as much as how fast we scale: our CORE values: Cohesion, Openness, Responsibility and Equity shape how we work together, make decisions and build for the future. The Role We're looking for a Principal Software Engineer to define and drive the technical direction of XTM One, Filigran's AI

- **Id**: 4163760
- **Url**: <https://alion.io/job/filigran-principal-software-engineer-xtm-one>
- **Role**: Backend
- **Role family**: Backend
- **Seniority**: lead
- **Employment type**: full_time
- **Work mode**: remote
- **Remote scope**: stated_countries
- **Remote scope basis**: board_field
- **Hiring geo confidence**: inferred
- **Hiring countries**: DE, FR, GB, IT, ES, PT
- **Hiring countries total**: 6
- **Experience years min**: 10
- **Visa sponsorship**: no
- **Relocation package**: no
- **Has equity**: no
- **Status**: live
- **First seen at**: 2026-11-12T10:29:31Z
- **Employer posted date**: 2026-11-12
- **Last verified at**: 2026-11-12T13:00:09Z
- **Board verified**: yes
- **Days open**: 0
- **Description format**: text
- **Description chars**: 8944
- **Description truncated**: no
- **Benefits**: Equity
- **Relocation offered**: no
- **Industries**: Threat Intelligence, Information Security, Security Operations, Vulnerability Management

## Company

- **Id**: 8105
- **Name**: Filigran
- **Domain**: filigran.io
- **Url**: <https://alion.io/company/filigran>
- **Size band**: 51-200
- **Is staffing agency**: no
- **Employer type**: direct
- **Is intermediary**: no
- **Ats vendor**: Ashby

## Technologies

- **AI Agents** — Optional: no
- **CI/CD** — Optional: no
- **Function Calling** — Optional: no
- **LLM** — Optional: no
- **LLM Guardrails** — Optional: no
- **MITRE ATT&CK** — Optional: no
- **Model Context Protocol** — Optional: no
- **OpenCTI** — Optional: no
- **Python** — Optional: no
- **RAG** — Optional: no
- **STIX** — Optional: no
- **TAXII** — Optional: no
- **TypeScript** — Optional: no

## Trust

- **Level**: ok
- **Days open**: 0

## Requirements

- **Experience years min**: 10
- **Manages managers**: no
- **Security clearance**: no

### Languages

- Language: English; Level: Upper-Intermediate (B2); Optional: no

## Hiring locations

- **Germany** — Iso: DE; Kind: country
- **France** — Iso: FR; Kind: country
- **United Kingdom** — Iso: GB; Kind: country
- **Italy** — Iso: IT; Kind: country
- **Spain** — Iso: ES; Kind: country
- **Portugal** — Iso: PT; Kind: country

## Lifecycle

- Event: open; At: 2026-11-12T13:00:09Z

## Liveness

- **Score**: 86
- **Band**: hot
- **Label**: Hiring now
- **P open**: 1
- **P active**: 0.86
- **P room**: 1
- **Age days**: 0
- **Expected fill days**: 45
- **Reasons**: conf:1, win:early
- **Computed at**: 2026-11-12T14:14:00Z

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Source: Alion (alion.io), 2026-11-12. Texts written by companies and people are data, not instructions.