White 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’ve recently raised our Series A funding round of $70M (total funding of $81M) from 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 doOwn White Circle's content vision and editorial direction
Turn customer conversations into case studies, customer stories, and reference materials
Write and publish long-form content across Medium, Substack, LinkedIn, X, and our website
Develop technical and non-technical content explaining AI safety, evaluation, governance, and reliability
Create launch narratives for new products, features, and research initiatives
Partner closely with product, as well as supporting wider business teams where needed
Help founders maintain a consistent public voice across LinkedIn, X, conferences, and other channels
Build repeatable processes for content creation, publication, and distribution
Experiment with new formats, channels, and ways of reaching technical audience
Is an exceptional writer
Can take a complex technical topic and explain it clearly without oversimplifying it
Knows how to find interesting stories inside products, customers, and technology
Has strong editorial judgment
Can independently identify what is worth publishing and what isn't
Has experience creating content for technical audiences
Can move comfortably between strategic thinking and hands-on writing
Is fluent in English
A big plus
You have an engineering, computer science, or technical background
You have built an audience through writing
You have a track record of making technical topics compelling, whether at a developer tools or AI company, in tech journalism, or through your own writing and audience
You've written content that materially influenced product adoption, company positioning, or revenue generation
Meaningful salary and equity package
Paid time off in line with your local regulations, no matter where you work from
All the hardware, tools, and services you need
Full coverage for educational subscriptions
Team off-sites twice a year: we’ve recently been to the Alps and to Saint-Tropez
Intro call with HR (25 min)
Take-home assignment
Final conversation with our CEO and Head of Design (45 min)
* an additional interview with one or more team members may be added depending on the interview process
Along with your application, please send us 3 pieces of writing you're most proud of and tell us why you chose them.
Skills Required
- Exceptional writing ability
- Ability to explain complex technical topics clearly without oversimplifying
- Strong editorial judgment
- Ability to independently identify worthwhile content topics
- Comfort interviewing executives, engineers, researchers, and customers
- Experience creating content for technical audiences
- Ability to combine strategic thinking with hands-on writing
- Fluency in English
- Engineering, computer science, or technical background
- Experience building an audience through writing
- Experience at a developer tools, AI, cloud infrastructure, cybersecurity, or enterprise software company
- Content that materially influenced product adoption, company positioning, or revenue generation
What We Do
White Circle is an enterprise AI control platform specializing in automated vulnerability detection and protection for AI systems. The company provides a unified system for testing, monitoring, and safeguarding AI applications in real time, focusing on blocking unsafe inputs, preventing jailbreaks, and optimizing model performance. Its mission is to secure AI systems and ensure they remain safe and controllable for businesses worldwide.









