Senior Software Engineer (python) - XTM One

🌀 The Company Filigran, founded in October 2022, stands out in the cybertech ecosystem for its commitment to revolutionizing cyber threat management with a proactive approach. Its mission is to develop innovative open-source solutions designed to anticipate cyber threats, identify security gaps, and strengthen organizational security posture. Filigran solutions are now trusted by over 6,000 public and private organizations worldwide. 🎯 The Role We're looking for a Senior Software Engineer to join our new XTM One team and contribute in shaping a state-of-the-art product and build the core platform for our XTM Suite. You'll work closely with the Engineering Manager and a small, agile squad to define the technical architecture and continue to enhance our unified AI solution that will unlock the true potential of our XTM Suite. This is a high-impact role where you will balance rapid iteration with code quality to lay the foundation for a scalable product. You will not just act as an implementer, but as a key contributor to the product vision, helping us solve complex challenges. 💼 Your Responsibilities Full Stack Architecture: Build a clean, scalable application deployable both as SaaS and On-Premise, using Typescript and Python . You will design complex visualization flows , advanced logging capacities and agent configuration . Architectural Evolution: Refine the software architecture to handle the integrations with the AI team at Filigran. Rapid Prototyping: Iterate fast to test concepts, being comfortable with refactoring or deleting code as the product vision evolves based on user feedback. Community Management: Engage with the Open Source community (GitHub, Slack), answering user questions. Team Structuring: Participate in the creation of development processes and team culture as one of the first hires in this new squad. 🤝 Who You’ll Work With Direct report : You will report to the Engineering Manager. Team: You will form the initial squad with the Engineering Manager, with plans for the team to grow fast. Collaboration: You will collaborate with the VP of Tech, CTO, and AI team to align on technical standards and integration strategies with the wider ecosystem (OpenCTI / OpenAEV / OpenGRC). 🧬 Profile We’re Looking For Senior experience in Full Stack development, with strong proficiency in TypeScript and Python . Architectural Mindset: You have the ability to think critically about software architecture, you have experience with genAI frameworks, being with Agentic, RAG or simple LLM usage, potentially levering MCP servers. Ownership & Agility: You have experience launching projects and are comfortable navigating uncertainty. You understand that we are building a product , not just writing code. Full Stack mastery: You are equally comfortable working on frontend interfaces (building intuitive wizards for complex configurations) and backend logic (API design, permission models). Communication: Proficient in English and French . Bonus Poi