Staff / Tech Lead Software Engineer - OpenCTI - US East

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.

Location: United States, East Coast (full remote)

We're looking for a Staff/Tech Lead Software Engineer to join the OpenCTI team with a distinct and high-leverage mission: drive technical collaboration with a key US-based partner actively contributing to OpenCTI. You'll be the technical anchor point ensuring this partnership produces efficient, high-quality, well-integrated contributions to the OpenCTI core project — while also driving technical vision and mentoring within Filigran's own engineering team.

• Own and drive the technical relationship with a key external partner contributing to OpenCTI

• Get involved early in technical refinement and design discussions for partner-driven features and contributions

• Guide and coach partner developers on OpenCTI's architecture, coding standards, and best practices

• Review and ensure the quality, consistency, and maintainability of external contributions before they land in core

• Act as the bridge between the partner's engineering team and Filigran's internal roadmap, architecture, and standards

• Proactively surface risks, blockers, and status to the Director of Engineering — clear, structured, no-surprises reporting

• Act as technical relay and enabler for the partnership — not just a solo contributor

• Contribute directly to key parts of the codebase, especially where partner and core work intersect

• Facilitate technical refinement sessions and design reviews with partner engineers

• Supervise, challenge, and elevate the technical quality of contributions coming from the partnership

• Promote OpenCTI's best practices, code quality, and performance standards externally and internally

• Coach engineers (internal and partner-side) via pair programming, code reviews, and structured feedback

• Collaborate with EMs/POs on task sizing, scope alignment, and roadmap planning for partner-related work

• Proactively report progress, risks, and technical alignment issues to the Director of Engineering and Product Manager

• Reports directly to the Director of Software Engineering

• Primary counterpart: engineering leads/developers at a key external partner

• Works closely with Filigran's tech leadership (OpenCTI Principal Engineer, VP Tech) and other staff engineers

• Collaborates with Product (PO/PM) on iteration and milestone scope involving partner contributions

• Collaborates with developers within the OpenCTI Engineering team on features and bug fixes

• Strong experience with TypeScript

• Hands-on experience with our technical stack: NodeJS, React, GraphQL, Elasticsearch, Redis

• Strong hands-on experience leveraging AI tools (e.g. Copilot, Cursor, LLM-based agents) to accelerate and improve software development

• Autonomy and ownership — proactive, self-directed, with strong reporting/alerting habits

• Cybersecurity / CTI (Cyber Threat Intelligence) experience is not a requirement but definitely a strong plus

• 8+ years in Software Engineering with a track record of reliable, iterative delivery

• Comfortable in a full-remote, async-first environment, with colleagues from multiple time zones

• Architectural force of proposal — pragmatic trade-offs, stakeholder alignment

• Strong communication and diplomacy skills — this role requires influencing an external partner's engineering practices without formal authority over them

• Plus: experience working with external stakeholders / partners / vendors

• Plus: Open-source experience — contributing to, maintaining, or leading work on open-source projects

We’re a fast-growing, global, and fully remote company building open-source cybersecurity solutions, increasingly powered by AI, to help defense teams anticipate threats and act faster.

⭐ What we believe

We believe we do work that matters, uniting defenders into a global community to make security more open, resilient & collaborative.

💻 How we work

We do work that matters by combining strong engineering standards with emerging technologies, including AI, to move faster and smarter.

🧭 What guides us

We make our work matter by building a culture grounded in our CORE values of Cohesion, Openness, Responsibility, and Equity. The principles that guide how we make decisions, treat people, and grow together, especially when no one’s watching.

• Competitive pay + equity - everyone shares in our success

• Remote-first, flexible, and balanced - work that fits your life

• Your setup, your choice - pick the gear that works for you

• Twice-a-year gatherings - we meet in person for regional and global offsites to connect, collaborate, and strengthen our culture beyond the screen

We enable cybersecurity through inclusion - from code to culture.

At Filigran, we are proud to be an equal opportunity employer. We believe diversity of our people make our products and our team stronger. We welcome talent of every background, identity, and lived experience, regardless of race, color, religion, gender, gender identity or expression, sexual orientation, national origin, age, disability, or veteran status.

What matters here is what you bring, not what you look like, where you’re from, or how you identify.

Apply now and help us build the future of the cybersecurity ecosystem, together.