> Markdown version of [/jobs/ext/35429-senior-software-engineer-typescript-and-python-xtm-one](https://www.wearedevelopers.com/jobs/ext/35429-senior-software-engineer-typescript-and-python-xtm-one). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Senior Software Engineer (TypeScript and Python) - XTM One - **Company:** Filigran - **Location:** France (Remote available) - **Experience:** Expert - **Contract:** Permanent contract - **Skills:** Artificial Intelligence, Software as a Service, Software Quality, Computer Telephony Integration, Github, Python (Programming Language), Open Source Technology, Software Architecture, Rapid Prototyping Process, TypeScript, Data Logging, Large Language Models, Mitre Att&ck, Cyber Threat Analysis, Backend, Free and Open-Source Software, Front End Software Development, Api Design, Software Coding, Code Restructuring - **Published:** May 23, 2026 - **Apply:** https://fr.indeed.com/viewjob?jk=c618724670015e76 ## About the Role Do you have experience in TypeScript?, * 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 Points: + Familiarity with Cyber Threat Intelligence (CTI) standards like STIX/TAXII or the MITRE ATT&CK framework. + Experience contributing to or maintaining Open Source projects. ## Description 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., * 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., * 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). ## Related Videos - [API Design - Getting Started](https://www.wearedevelopers.com/videos/33-api-design-getting-started) - [Innovating Developer Tools with AI: Insights from GitHub Next](https://www.wearedevelopers.com/videos/1268-innovating-developer-tools-with-ai-insights-from-github-next) - [Developing the Backend with Stefan Lingler, CTO at Shpock](https://www.wearedevelopers.com/videos/100360-developing-the-backend-with-stefan-lingler-cto-at-shpock) - [Why Your Best Mediors Never Become Seniors (And How to Fix It)](https://www.wearedevelopers.com/videos/2108-why-your-best-mediors-never-become-seniors-and-how-to-fix-it) - [Rest API Antipatterns](https://www.wearedevelopers.com/videos/100208-rest-api-antipatterns) - [Meet Your New BFF: Backend to Frontend without the Duct Tape](https://www.wearedevelopers.com/videos/682-meet-your-new-bff-backend-to-frontend-without-the-duct-tape) ## Related Articles - [Fully Remote Software Engineer Jobs](https://www.wearedevelopers.com/magazine/447-fully-remote-software-engineer-jobs) - [Dev Digest 121 - AI goes offline](https://www.wearedevelopers.com/magazine/456-dev-digest-121-ai-goes-offline) - [Dev Digest 120 - Apple and peers](https://www.wearedevelopers.com/magazine/455-dev-digest-120-apple-and-peers) - [Dev Digest 131 - AI'm not sure about OSS](https://www.wearedevelopers.com/magazine/472-dev-digest-131-ai-m-not-sure-about-oss) - [Find a Developer Job: 12 Best Job Sites For Developers](https://www.wearedevelopers.com/magazine/165-find-a-developer-job-12-best-job-sites-for-developers) - [Dev Digest 138 - Are you secure about this?](https://www.wearedevelopers.com/magazine/486-dev-digest-138-are-you-secure-about-this)