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.
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Data Scientist at Harmonic Security Inc.
Join an elite team of cybersecurity experts building the future of secure Generative AI adoption. Backed by Ten Eleven Ventures and In-Q-Tel, this AI-first startup is seeking a Data Scientist to build production-grade NLP models that protect sensitive data in real-time. If you have a proven track record in Python and classification, and want to shape a category-defining security product while using tools like Cursor and Claude Code, this is your opportunity. Help enterprises embrace AI safely and do the best work of your life in a culture that values speed, transparency, and innovation.
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Location
London, United Kingdom
Compensation
Not Disclosed
Company
Harmonic Security Inc.
Role overview
Harmonic Security provides an AI Governance and Control (AIGC) platform that enables enterprises to adopt AI tools safely without risking data security and privacy. The company offers a 'zero-touch' data protection platform utilizing pre-trained, specialized large language models to detect sensitive data with high accuracy. Key offerings include Harmonic Protect, a data protection platform for secure AI adoption, and MCP Gateway, a developer-friendly gateway providing visibility and control over agentic AI ecosystems. The platform addresses 'Shadow AI' by offering continuous monitoring of unapproved AI tools, assessing associated risks, and allowing security teams to manage access and block sensitive content from being uploaded. Harmonic employs an end-user 'nudging' approach to guide safe AI usage alongside traditional security enforcement.
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.
Who this is a fit for
- 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.
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.
How Jack & Jill work together
I get to know what you’re great at, then find roles you’d never find yourself.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.
I recruit from Jack’s network and make the intro when I spot a great match.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.
Jack gets to know what you're great at and what you want next, then searches 15 million jobs daily and helps you discover roles at companies like this.
Meet Jack
What happens next?
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 your profile’s a match and Harmonic Security Inc. wants to meet, Jill will make the intro. In the meantime, Jack will send you excellent alternatives.