Product Engineer
il y a 3 jours
TLDR: We're looking for a Product Engineer (Backend – Rust) to own and evolve the core systems that power AI safety at scale – building APIs that handle hundreds of millions of requests, real-time policy enforcement, and high-throughput data pipelines.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’ve raised $11M from top funds, founders, and senior leaders at OpenAI, Anthropic, HuggingFace, Mistral, DeepMind, Datadog, Sentry, and othersWe process over one hundred million API calls every monthWe fine-tune and train our own LLMs so they run faster and cheaper than any open or proprietary modelWe’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.You will:Design and build backend services in Rust that handle real-time policy checks at scale – low latency, high reliability.Own features end-to-end: from API design to database schema to deployment. You ship, you monitor, you iterate.Work across the stack when needed – we care more about solving problems than role boundaries.Improve system performance and reliability – connection pooling, caching strategies, query optimization, observability.Collaborate directly with product, research, and ML teams to turn requirements into production systems.You’ll fit right in if you:You've built and shipped backend systems in Rust – not just tutorials, real production services.You're comfortable with async Rust (Tokio), web frameworks (Axum, Actix), and database access patterns.You have strong fundamentals in system design – you can reason about trade-offs, failure modes, and scaling.You've worked with PostgreSQL and know how to write efficient queries, design schemas, and debug performance issues.You communicate clearly and work well with others. Fluent English.A big plus:Experience with ClickHouse, Redis, or Kafka/event streamingKubernetes and infrastructure-as-code (Terraform, Helm)Background in high-throughput systems monitoring systems, fintechWhy White CircleSalary of $80,000 to $150,000 + equity20 days of paid vacationWork from Paris (hybrid) + relocation packageBest medical insurance in FranceAll the hardware, tools, and services you needCovered subscriptions for AI agents and IDEsTeam off-sites twice a year: we’ve recently been to the Alps and to Saint-TropezHow we hireIntro call with one of our colleaguesComplete the take-home exerciseShow your best during the technical interviewFinal call with our CEO and CTOPlease submit your application in English - it’s our company language so you’ll be speaking lots of it if you join #J-18808-Ljbffr
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il y a 1 jour
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Paris, France Symbiotic Security Temps pleinAbout Symbiotic SecuritySymbiotic Security is a cybersecurity startup helping developers write secure code through an AI-powered assistant integrated into their IDE and CI/CD pipelines.Our product does two things extremely well:Detect & fix vulnerabilities introduced by AI-generated code (GitHub Copilot, etc.)Train developers in context, as they code, so...
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il y a 3 jours
Paris, France White Circle Temps pleinFrontend Engineer Wanted: Frontend Engineer to help us keep LLMs under control. About Us 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,...
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Paris, France Datadog Temps pleinStaff Software Engineer - Product Analytics Join to apply for the Staff Software Engineer - Product Analytics role at Datadog Product Analytics is expanding, and we’re looking for an experienced Staff Engineer to lead the technical direction of our user analytics platform. This group builds services that help customers understand users’ behaviors: when...
