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Staff - Tech Lead Software Engineer - OpenCTI

Job Overview

Location

France

Job Type

Full-time

Category

Software Engineering

Date Posted

April 15, 2026

Full Job Description

📋 Description

  • As a Staff/Tech Lead Software Engineer on the OpenCTI team, you will drive the technical vision and mentor the software engineering team while contributing directly to key parts of the codebase, major features, and critical bug fixes.
  • Your day-to-day responsibilities include acting as a technical relay, supervising and animating technical topics across teams, promoting best practices for code quality and performance, facilitating transversal initiatives such as dependency management and security issues, and supporting engineers through pair programming, code reviews, and regular feedback.
  • You will collaborate closely with Engineering Managers, Product Owners, and other staff engineers to size tasks, plan the roadmap, and define the scope of future milestones within a team of 3 to 6 developers ranging from junior to senior levels.
  • Filigran SAS, founded in October 2022, is a fast-growing, global, fully remote company revolutionizing cyber threat management through innovative open-source solutions trusted by over 6,000 public and private organizations worldwide, with a mission to anticipate threats, identify security gaps, and strengthen organizational security posture.
  • In this role, you will grow your influence as a technical leader, deepen your expertise in SaaS architecture and cybersecurity technologies, and contribute to a culture grounded in Cohesion, Openness, Responsibility, and Equity while working with emerging technologies like AI to move faster and smarter in defense of digital ecosystems.

Skills & Technologies

React
Node.js
Elasticsearch
GraphQL
Senior
Remote

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About Filigran SAS

Filigran SAS is a French cybersecurity company that develops open-source threat-intelligence and crisis-management platforms. Its flagship products, OpenCTI and OpenEx, help public and private organizations collect, analyze and share threat data, orchestrate responses and conduct crisis simulations. Founded in 2022 and headquartered in Paris, Filigran provides software, support and consulting services to improve cyber resilience.

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