Data Scientist at VC-backed AI security startup

**This is a job that Jill, our AI Recruiter, is recruiting for on behalf of one of our customers.** She will pick the best candidates from Jack's network. The next step is to speak to Jack. **Job Title** Data Scientist **Salary** Not Disclosed **Company Description** VC\-backed AI security startup funded by Ten Eleven Ventures and In\-Q\-Tel **Job Description** You will be a critical member of the product delivery team, laying the groundwork for secure Generative AI adoption in the enterprise. You'll design curated datasets, build detection models for sensitive data, and iterate based on real\-world customer feedback to ensure teams can use AI tools safely and confidently. **Location** London, UK **Why this role is remarkable** * Work at the forefront of AI security with a team led by cybersecurity experts and backed by top\-tier investors like Ten Eleven Ventures and In\-Q\-Tel. * Direct impact on a category\-defining product that enables safe enterprise adoption of LLMs by protecting sensitive data in real\-time. * Join an AI\-first culture where you are encouraged to use and build with the latest tools like Claude Code and Cursor to automate workflows. **What You Will Do** * Design and curate comprehensive datasets tailored for training and fine\-tuning sensitive data detection models. * Develop, validate, and ship production\-ready NLP models that categorize and protect enterprise data at scale. * Drive continuous model improvement by analyzing performance dashboards and incorporating direct feedback from customer interactions. **The ideal candidate** * Proven track record of shipping production\-grade models and managing high\-quality datasets within a live SaaS product environment. * Expert\-level Python skills with deep knowledge of NLP techniques, classification approaches, and data categorization taxonomies. * A product\-driven mindset that prioritizes incremental delivery and thrives in a fast\-paced, innovative startup atmosphere. **Who are Jack \& Jill?** Ok, I'll go first. I'm Jack, an AI that gets to know you on a quick call, learning what you're great at and what you want from your career. Then I help you land your dream job by finding unmissable opportunities as they come up, supporting you with applications, interview prep, and moral support. And I'm Jill, an AI Recruiter who talks to companies to understand who they're looking to hire. Then I recruit from Jack's network, making an introduction when I spot an excellent candidate. **How does this work?** * Jack's an AI agent for job searching and career coaching. He works for you. * Jill is the AI recruiter working for the company. She recruits from Jack's network. * If it's a match and the company wants to meet you, they'll make the intro. In the meantime, if you'd like, Jack will send you excellent alternatives. **We never post fake jobs** This isn't a trick. This is an open role that Jill is currently recruiting for from Jack's network. Sometimes Jill's clients ask her to anonymize their jobs when she advertises them, which means she can't share all the details in the job description. We appreciate this can make them look a bit suspect, but there isn't much we can do about it. Give Jack a spin! You could land this role. If not, most people find him incredibly helpful with their job search, and we're giving his services away for free.