--- title: 'Design Engineer at White Circle' canonical: 'https://feeny.ai/job/design-engineer-white-circle-new-york-qk0d186844we' type: 'job' last_seen: '2026-11-07' --- # Design Engineer at White Circle - **Company:** White Circle - **Location:** New York - **Employment:** full-time - **Posted:** 2026-10-22 - **Last confirmed live:** 2026-11-07 - **Apply:** https://jobs.ashbyhq.com/whitecircle/d5151e8d-e608-4ad0-a56a-845a094b49b0 ## Job description TL;DR: We’re looking for a Design Engineer to turn complex AI safety workflows into simple, intuitive interfaces used by engineering and research teams every day. You’ll work across design and code: shape flows in Figma, then build them in production with React, TypeScript and our component library. You’ll own the gap between "designed" and "shipped" so that what users get is exactly what was intended, down to the last pixel and transition. ## About White Circle [White Circle](http://whitecircle.com) 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’ve recently raised our Series A funding round, taking our total funding to $70M. Our investors include top funds, founders, and senior leaders at OpenAI, Anthropic, HuggingFace, Mistral, DeepMind, Datadog, Sentry, and others - We process over one hundred million API calls every month - We fine-tune and train our own LLMs so they run faster and cheaper than any open or proprietary model 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 ## What you’ll do - Design and build product interfaces end to end, from Figma exploration to production-ready React code - Own our design system in both Figma and code: tokens, components, variants, documentation. Keep the two in sync - Build and polish UI components with attention to states, edge cases, accessibility, and performance - Prototype interactions and new flows in code to test ideas with real data before we commit to them - Craft motion and micro-interactions that make complex workflows feel clear and responsive - Raise the quality bar of the product: spot UI inconsistencies, fix them yourself, ship - Work directly with product, engineering, and research. Expect fast iterations and full ownership ## What we’re looking for - 6+ years of experience in product design, frontend engineering, or design engineering, with a portfolio showing both design and shipped code - Strong frontend skills: React, TypeScript, modern CSS (Flexbox, Grid, custom properties, container queries) - Experience building and maintaining design systems in code, e.g. design tokens, component APIs, Storybook or similar - Deep Figma knowledge: Auto Layout, Components, Variants, Variables, Prototyping - Experience with motion and animation in code (Framer Motion / Motion, CSS transitions, or similar) - A track record of designing clear, functional web interfaces, ideally for technical or data-heavy products (dashboards, developer tools, B2B SaaS) - Solid grasp of accessibility (WCAG, keyboard navigation, ARIA) and responsive design - Comfort working in a real codebase: Git, code review, working alongside engineers - You use AI tools daily in your workflow (Cursor, Claude Code, v0, or similar) and know how to get production-quality results out of them Bonus points - Experience with Tailwind CSS, Radix UI / shadcn/ui, or other headless component libraries - Next.js or Vite experience - Data visualization (D3, Recharts, visx) - Figma plugin or Figma-to-code pipeline experience (Tokens Studio, Style Dictionary, Code Connect) - Interest in AI safety, LLMs, or developer tooling ## Compensation & benefits - Competitive compensation package, including equity - Flexible time off - Health insurance - Mental health support, including coverage for therapy when you need it - 401(k) retirement plan - Learning and development support for courses, conferences, and opportunities to grow your skills - All the hardware, subscriptions, tools, and services you need - Team off-sites twice a year: we’ve recently been to the Alps, Saint-Tropez, and Marbella Process - Intro call (25 min) - Take-home assignment - Interview with Head of Design & Creative and Full-stack Engineer (45 min) - Additional interview (depending on the interview process) Please submit your application in English ## About White Circle ## Company Overview - **One-liner**: White Circle is a control layer for AI in production, providing safety, security, evals, and performance optimization through a unified API. - **Entity Type**: Private (Seed stage) - **Headquarters**: Dover, Delaware, United States (operational hub in Paris, France) - **Founded**: 2025 - **Founders**: Denis Shilov (Founder & CEO) ## Core Business - **Primary industry**: AI Governance, AI Security, AI Observability - **Target customers**: B2B, Enterprise (companies deploying AI agents, chatbots, or LLM-powered applications) - **Mission or purpose**: To give organisations visibility into how their AI behaves, help them respond when things go wrong, and provide a unified system for improving reliability, safety and compliance. ## Products & Services - **White Circle Platform**: A single API that integrates three layers: - **Protect**: Custom low-latency guardrails for blocking unsafe inputs, preventing jailbreaks, detecting prompt injections, PII leakage, and sensitive data leaks. - **Observe**: Real-time analytics including topic classification, user behavior clustering, custom metrics, error rate analysis, sentiment analysis, and risk scoring. - **Improve**: Model routing, dynamic prompt engineering, context enrichment, and automated optimization based on labelled user feedback. - **CircleGuardBench**: A proprietary benchmark for evaluating AI moderation models across harm detection, jailbreak resistance, false positives, and latency. - **KillBench**: A benchmark of hidden LLM biases in critical decisions (life-and-death scenarios). ## Market Standing - **Valuation/Market Cap**: Not disclosed - **Key Metric**: $11M raised in seed funding (announced May 2026) - **Notable Investors/Partners**: Backed by prominent AI and technology leaders including Romain Huet (ex-Head of Product @DeepMind), Dirk Kingma (Anthropic), Guillaume Lample (Mistral), Thomas Wolf (Hugging Face), Olivier Pomel (Datadog), François Chollet (Keras), Mehdi Ghissassi (ex-DeepMind), Paige Bailey (DeepMind), and David Cramer (Sentry). - **Growth Signals**: - 21 employees (+283.3% YoY, +9.5% monthly growth) - Monthly website traffic: 32,090 visits (+682.7% yearly) - Active job postings: 6 (monthly job posting growth +20%) - SOC 2 Type II and HIPAA compliant - Operates in 7 countries (France, Russia, Netherlands, Serbia, Switzerland, Georgia, Spain) ## Competitive Advantages - **Proprietary self-adjusting models** optimized for low-latency and high performance - **Unified platform** that combines safety, security, evaluation, and performance optimization – no need for multiple point solutions - **Enterprise-grade compliance** (SOC 2 Type II & HIPAA) - **Strong network effects** from backing by leaders at OpenAI, Anthropic, DeepMind, Hugging Face, and Datadog - **Automated red-teaming** and continuous improvement through user feedback ## Strategic Focus - Accelerate product development and expand the team across the US, UK, and Europe - Grow global customer base across healthcare, finance, hiring, and security verticals - Continue building benchmarks (CircleGuardBench, KillBench) to shape AI safety standards - Maintain deep integration with the AI open-source ecosystem ## Why Work Here - **Culture**: “Smart, friendly, and fun” team with a strong engineering and research focus (43% technical staff) - **Location**: Based in Paris, France with a hybrid work model (office + remote) - **Benefits**: - Strong salary - 20 paid days off (plus ability to take more for recovery) - Free education (company covers learning costs) - Team offsites several times a year - **Open roles** (June 2026): QA Engineer, Product Engineer (Backend), DevOps Engineer, Product Designer, AI Engineer (Audio), Data Engineer - **Impact**: Build the future of AI safety at a well-funded, high-growth startup with world-class investors ## Sources 1. [whitecircle.ai](https://whitecircle.ai) 2. [whitecircle.ai/careers](https://whitecircle.ai/careers) 3. [LinkedIn – White Circle](https://www.linkedin.com/company/whitecircle) 4. [Tech.eu – White Circle lands $11M](https://tech.eu/2026/05/12/white-circle-lands-11m-to-help-companies-secure-ai-systems/) ## Other roles at White Circle - [Communications Designer](https://feeny.ai/job/communications-designer-white-circle-new-york-ey2w1jd32xf0) — New York - [DevRel Lead (Developer Relations)](https://feeny.ai/job/devrel-lead-developer-relations-white-circle-global-wbzmpkvykeb1) — Global - [Production Manager](https://feeny.ai/job/production-manager-white-circle-new-york-ns09sg8xf428) — New York - [Content Lead](https://feeny.ai/job/content-lead-white-circle-new-york-a57fyake800m) — New York - [Talent Lead](https://feeny.ai/job/talent-lead-white-circle-san-francisco-4r6c7dgw1p84) — San Francisco, CA - [Finance Lead](https://feeny.ai/job/finance-lead-white-circle-new-york-s3jtsbzkwt7f) — New York - [Web Designer (Communication)](https://feeny.ai/job/web-designer-communication-white-circle-new-york-3v7jkx8gskhf) — New York - [Recruiter (Research)](https://feeny.ai/job/recruiter-research-white-circle-new-york-1vekq2rdfrvz) — New York - [Senior Data Labeler](https://feeny.ai/job/senior-data-labeler-white-circle-paris-vtp78vea9yp4) — Paris, France - [Multimodal ML Engineer](https://feeny.ai/job/multimodal-ml-engineer-white-circle-paris-kd1xveq65a91) — Paris, France