Senior Security Engineer, Application Security
Trail of Bits- Full Time
- Senior (5 to 8 years)
The Motley Fool is a purpose-driven financial services company on a mission to make the world smarter, happier, and richer. For 30 years, we’ve been helping people make better investment decisions through transparency, education, and Foolish fun. We’re a fast-moving, collaborative team that values high-quality work, curiosity, and initiative. We care deeply about what we do, and we’re driven by the impact our work has on real people’s financial futures.
We’re seeking a mid to senior-level Application Security Engineer with strong technical instincts, a bias for action, and the ability to own complex projects end-to-end. You’ll be part of a high-impact team responsible for identifying, validating, and remediating security risks across a multi-language environment (Python, C#, PHP). This is not a checkbox role—success here means taking initiative, verifying deeply, and driving security outcomes without waiting to be told.
A growing focus of this role will be securing AI and LLM-based applications. This is an emerging and rapidly evolving area of security, and we’re looking for someone excited to help define best practices, assess novel risks, and build safeguards into how we use generative AI. You don’t need to be an expert yet—but curiosity, initiative, and a willingness to learn fast are essential.
We value people who take initiative, challenge the status quo, and consistently raise the bar. If that’s how you work, you’ll thrive here.
Please note, no sponsorship is available for this position. You must reside in, or be willing to relocate.
Provides investment advice and financial education
The Motley Fool offers financial services focused on helping individual investors make informed decisions about their money. It provides premium subscription services like Stock Advisor and Rule Breakers, which deliver stock recommendations and investment advice to assist clients in building and managing their investment portfolios. The company generates revenue through subscription fees, website advertising, and affiliate partnerships. Unlike many competitors, The Motley Fool emphasizes a long-term investment philosophy and prioritizes financial education, catering to both novice and experienced investors. Its goal is to enhance financial literacy and empower individuals to achieve smarter, happier, and wealthier lives.