We're looking for a SeniorSoftwareEngineer – OpenCTI to join our Engineering team and help us build, scale, and shape one of the most impactful open-source platforms in cyber threat intelligence.
You’ll work closely with Engineering Managers, Product Owners, Staff Engineers, and a highly collaborative dev team to build high-quality, scalable solutions with global impact.
Your Responsibilities
Own and develop end-to-end features for the OpenCTI platform, from idea to production
Collaborate with the product and engineering teams to ensure high-quality, user-focused experiences
Help scale the team and technical processes, mentor junior developers, and improve internal tooling
Contribute to the evolution of the OpenCTI tech stack (React, Node.js, GraphQL, Kubernetes)
Write clean, well-documented code and participate in code reviews
Engage with the open-source community, respond to feedback, and contribute to the broader ecosystem
Work closely with EMs and Staff Engineers to make architectural and product decisions
Who You’ll Work With
You’ll report to the Engineering Manager for OpenCTI
You’ll collaborate with Staff Engineers, Product Owners, and fellow developers
You’ll work cross-functionally with Product, Customer Success, and Security teams
You’ll also engage with the broader open-source community and key external contributors
Profile We’re Looking For
7–8+ years of experience in softwareengineering with a strong focus on fullstack development
Proficient in TypeScript/JavaScript, React, and Node.js (or similar)
Experience building scalable, secure, and performant applications
Deep understanding of modern API design (REST/GraphQL), frontend architecture, and backend services
Comfortable working in a remote, async-first environment
Product-oriented mindset:
you care about UX, performance, and user impact
Strong communication and ownership skills
Bonus:
experience with open-source contribution, cybersecurity tools, or GraphQL Relay
Why Join Filigran? More than just a job.
We believe that great work happens in ahealthy, balanced, and collaborative environment.
At Filigran, you’ll find:
A culture of trust and well-being– Low stress, high impact.
Our teams work in acalm, supportive atmospherewhereyou can do your best work without burnout.
A tight-knit, caring team– Collaboration and knowledge-sharing are at the heart of how we work.
True full-remote culture– Async-friendly, flexible hours, and autonomy to structure your days.
An ambitious, long-term vision– You’ll be building something thatmatters—and you’ll see its impact.
People often tell us“I’ve never worked anywhere like this”when they join.
And that’s exactly what we aim for.
Compensation & Benefits
Competitive salary + BSPCE equity program
Remote-first with flexible hours (EU time zones preferred)
Premium health coverage via Alan
Choice of laptop and remote work setup
Paid time off and strong work-life balance
Our Hiring Process
Simple, fast, and respectful:
TAM Call (30 min) – Get to know your background and motivations
Intro Call (45 min) – Meet the hiring manager, learn about the team and role
Technical Interview (60 min) – Dive into a coding or architecture challenge
Culture & Team Fit (30–45 min) – Chat with a future teammate to assess team alignment
Offer & Onboarding!
Ready to Join Us?
Apply now and help us build the future of cyber threat intelligence at scale through OpenCTI.
