Interested in working on cutting-edge blockchain technology and creating equitable access to the global financial system? Since 2014, the mission-driven team at the Stellar Development Foundation (SDF) has helped fuel the tremendous growth of the Stellar blockchain network, an open-source platform that operates at high-scale today. Developers and companies around the world build on it, and the SDF team is expanding to support the rapidly growing and changing Stellar ecosystem. We're hiring a Director, Ecosystem & Product Security to lead security strategy across the Stellar ecosystem and directly own security outcomes for Foundation-developed systems, Foundation-operated infrastructure, and treasury-related security responsibilities. This role is focused on raising the practical security baseline across a decentralized financial ecosystem that includes wallets, infrastructure providers, custodians, issuers, validators, and other critical participants. Success means reducing real-world security risk and financial loss through clear standards, effective coordination, and practical improvements that are adopted in production. The role is both strategic and hands-on. It requires deep technical judgment across decentralized systems, product security, and operational risk, along with the ability to work across teams and influence independent ecosystem participants without direct authority. This is a highly cross-functional and externally visible leadership role. The right candidate will combine technical credibility, sound judgment, and strong execution to help make security a durable strength of both the Foundation and the broader Stellar network. In this role, you will: • Define and lead the Foundation’s security strategy across both the Stellar ecosystem and Foundation-owned systems • Raise the practical security baseline for key ecosystem participants, including wallets, infrastructure providers, custodians, issuers, and validators • Publish actionable guidance, reference patterns, and security expectations that drive real adoption across the ecosystem • Build coordination mechanisms for shared risks, incident response, and cross-ecosystem security improvement • Own security outcomes for Foundation-developed software, Foundation-operated infrastructure, and treasury / custody-related responsibilities • Partner with Engineering, Finance, Legal, IT, and Corporate Security to drive implementation of security controls and secure operating practices • Lead secure development efforts across architecture, threat modeling, vulnerability management, bug bounty programs, and product incident response • Build and lead a high-performing security team, while translating strategy into execution plans and measurable outcomes • Represent the Foundation externally as a credible technical leader and convener on ecosystem security You have: • 10+ years of experience in security, including significant experience in senior leadership roles • 5+ years leading security programs, teams, or functions with meaningful scope • A track record of owning security outcomes for complex, high-consequence systems in production • Deep experience in product and application security, with hands-on judgment in real-world environments • Strong familiarity with blockchain and decentralized system security • The ability to assess and prioritize risk across areas such as protocol design, smart contracts, wallets, validators, dependencies, and governance mechanisms • Experience driving security improvements across multiple teams, organizations, or ecosystem participants, including in environments where you do not have direct authority • Strong incident judgment, including experience handling high-severity incidents and disclosure processes • A pragmatic approach to security, with the ability to make tradeoffs that reduce real-world risk rather than optimize for theoretical completeness • Experience building, leading, and developing high-performing security teams • The ability to set strategy, translate it into execution, and deliver measurable outcomes • Clear communication skills and the credibility to work effectively with engineers, executives, and external ecosystem participants • Experience operating in environments where security failures could lead to financial loss, operational disruption, or loss of trust Bonus Points if (optional): • Experience with secure development frameworks such as NIST SSDF • Familiarity with Web3 security frameworks such as OWASP SCSVS or SEAL • Experience in financial infrastructure, payments, custody, or tokenized finance • Experience with large-scale platform or ecosystem security architecture • Experience in identity, trust, encryption, or internet-scale systems We offer competitive pay with a base salary range for this position of $225,000 - $320,000 depending on job-related knowledge, skills, experience, and location. In addition, we offer lumen-denominated grants along with the following perks and benefits: USA Benefits/Perks: • Competitive health, dental & vision coverage with most plans covered at 100% for the employee + any dependents • Flexible time off + 15 company holidays including a company-wide holiday break • 401(k) with 4% match • Commuter benefits with $250/month employer contribution • Health & Dependent Care FSA Accounts • Health Savings Account (HSA) with monthly employer contribution • Gym reimbursement ($80 per month) • Life & ADD (1x salary, up to $250K) • Short & Long term disability • Generous paid parental leave for all parents, plus paid pregnancy disability leave for birthing parents • Family building benefits through Kindbody • Wellbeing benefits (One Medical, Rightway, Headspace) • L&D budget of $1,500/year • Daily lunch and snacks in office • Company retreats About Stellar Stellar is more than a blockchain. Powered by a decentralized, fast, scalable, and uniquely sustainable network made for financial products and services and a thriving and passionate ecosystem that