QA Engineer for AI Safety — Hybrid Paris/London, Equity

\u2018We\u2019re looking for a QA Engineer to join White Circle, an AI Safety company building the policy enforcement and optimization layer for AI systems. Backed by $11M from senior leaders at OpenAI, Anthropic, HuggingFace, Mistral, and DeepMind, White Circle processes 100M+ API calls monthly and runs its own LLMs in production. This is a manual-first...

White Circle, an AI Safety company, is hiring a DevOps Engineer to own production infrastructure across AWS and on-prem. You will manage Kubernetes clusters, CI/CD pipelines, container security, observability, and networking, while implementing IaC with Terraform and Python automation to support ML workloads.Relocation to Paris (hybrid) is required; visa and...

About H: When we released Holo4 on 28 September, we published every trajectory behind its public benchmark scores at trajectories.hcompany.ai. For OSWorld that's 369 desktop tasks, each run 3 times, with the steps, tokens and time of every attempt. This role builds and runs the evaluation framework that produces runs like these. H builds computer-use agents...

We're looking for ML Engineers to join White Circle, an AI Safety company building the policy enforcement and optimization layer for AI systems. Backed by $11M from senior leaders at OpenAI, Anthropic, HuggingFace, Mistral, and DeepMind, White Circle processes 100M+ API calls monthly and runs its own LLMs in production.You willTurn petabytes of unstructured...

We're looking for a DevOps Engineer to join White Circle, an AI Safety company building the policy enforcement and optimization layer for AI systems. Backed by $11M from senior leaders at OpenAI, Anthropic, HuggingFace, Mistral, and DeepMind, White Circle processes 100M+ API calls monthly and runs its own LLMs in production. You will Build and maintain...

Roundtable is building the gold standard for private equity by shipping a highly type-safe, scalable stack in a hybrid Paris/Toulouse setup. You will join a senior 10-engineer team, shaping domain-driven fintech workflows and production reliability under founders CTO and CPO guidance.You’ll own critical features from zero-loss ownership tracking to...

We're looking for a DevOps Engineer to join White Circle, an AI Safety company building the policy enforcement and optimization layer for AI systems. Backed by $11M from senior leaders at OpenAI, Anthropic, HuggingFace, Mistral, and DeepMind, White Circle processes 100M+ API calls monthly and runs its own LLMs in production. You will Build and maintain...

TLDR: We’re looking for a research engineer to build and maintain our internal suite of benchmarks, covering single/multi-turn content and agentic guardrails. The research engineer would also work with the team on projects studying agent behaviours in the wild. About us White Circle is an AI Safety company building the safety, reliability, and optimization...

We're looking for an ML Infrastructure Engineer to join White Circle, an AI Safety company building the policy enforcement and optimization layer for AI systems. Backed by $11M from senior leaders at OpenAI, Anthropic, HuggingFace, Mistral, and DeepMind, White Circle processes 100M+ API calls monthly and runs its own LLMs in production.You willBuild scalable...