Research Scientist/Engineer (Agentic Systems)
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Paris
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Job Description & Specifications
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Research Scientist/Engineer (Agentic Systems) at Whitecircle
📍 Paris
TLDR: We're looking for a research scientist to build autonomous, large-scale environments that push LLM agents (single and multi-agent) to failure, and study how they actually break.About usWhite Circle is an AI Safety company building the safety, reliability, and optimization layer for AI systems. At the core of our platform are policies – simple natural-language rules that define what an AI model should and shouldn’t do. We automatically test, enforce, and continuously improve these policies at scale.
We’re a small, highly focused team. If you want to work deeply on hard problems, see your work ship to production quickly, and influence how AI safety is actually built – you’re the one we need.About the teamWhite Circle's fundamental research team works on the science of how AI systems fail: where agents break, why misalignment and unsafe behaviours emerge, and how to catch them before they reach the real world. We build the evals, benchmarks, environments, and tooling that empirically study the most pressing AI safety concerns — some of which become the guardrails shipped in our products, and some of which become public writeups.You will
You’ll fit right in if you:
A big plus:
Why White Circle
How we hire
Please submit your application in English.Find more English Speaking Jobs in France on Arbeitnow
Required Skills / Keywords: Research
Application Process: Click "Apply for this Job" to be directed to the employer's official application page.
- We’ve raised $11M from top funds, founders, and senior leaders at OpenAI, Anthropic, HuggingFace, Mistral, DeepMind, Datadog, Sentry, and others
- We process over 100M+ API calls every month
- We fine-tune and train our own LLMs so they run faster and cheaper than any open or proprietary model
- Build adversarial environments for agents: complex, uncertain settings that sit on the boundary of agent capability and alignment, where failure is informative rather than trivial.
- Build realistic multi-agent environments and instrument them so emergent breakdowns are observable — failures that arise from the agents themselves, not ones scripted from the outside.
- Run experiments end to end, against external APIs and our own models, orchestrating many agents in parallel.
- Catalogue concrete agent failure modes and build the tooling to surface them at scale.
- Turn findings into internal models of agent behaviour and into public writeups.
- Have built at least one non-trivial agent environment or automated research pipeline that ran end to end (single- or multi-agent), and can talk through what broke and why.
- Strong software and AI engineering. Can independently orchestrate many agents and containers in parallel without that orchestration being the bottleneck.
- A track record of empirical research in agents, red-teaming, or post-training where you defined the question, ran it, and drew a defensible conclusion.
- A fast empirical iterator who is comfortable defining the question when there's no playbook: can take a fuzzy concern ("do these agents collude under pressure?") and turn it into a concrete, falsifiable experiment.
- An AI power-user — fluent with frontier models and coding agents in your daily work.
- Published research at A* venues on automated red-teaming, agentic environments, or post-training.
- Experience building monitoring for model failures and anomalous behaviour.
- Experience reproducing public benchmark results and finding where the original methodology is fragile or misleading.
- An MSc or PhD in machine learning, computer science, cognitive science, computational neuroscience, physics, or a related quantitative field.
- AI safety fellowship (MATS, ASTRA, Anthropic Fellows, etc.), or a comparable self-directed research record.
- Paid time off in line with your local regulations, no matter where you work from
- Work from Paris (hybrid) with a relocation package available, or work from London (note: we are unable to provide relocation support or medical insurance for London-based roles)
- Meaningful equity package
- Comprehensive medical insurance for our France-based team
- All the hardware, tools, and services you need
- Covered subscriptions for AI agents and IDEs
- Team off-sites twice a year: we’ve recently been to the Alps and to Saint-Tropez
- Introductory call with HR (25 min)
- Take-home test task
- Technical interview with Head of Fundamental Research (60 min)
- Final conversation with our CEO (45 min)
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