Senior Full-Stack Engineer

Description:

Alice's RL Environments team builds adversarial environments that the world's leading AI labs use to test and train their most capable agents. Each environment is a working replica of a real system with an attack planted inside it. A verifier decides whether the agent held up.

All of it runs on AgenticVerse, our platform for building, running, and reviewing RL environments. AgenticVerse is a full-fledged, production-grade SaaS application. A large and fast-growing community of researchers works in it every day.

We're looking for a Senior Full-Stack Engineer to own AgenticVerse as a product, and to build the digital twins our environments are made of.

What you'll do

AgenticVerse

• Own the AgenticVerse application end to end: frontend, backend, data model, and APIs
• Build the workflows researchers live in: authoring tasks, launching runs, managing gyms, and reviewing results
• Make a run readable at a glance: traces, verifier results, and where the agent went wrong
• Hold a production bar: performance, reliability, access control, and observability as the user base grows
• Take features from design to production, and talk to the researchers who use them

Digital twins

• Build digital twins of real products: web apps an agent can't tell apart from the real thing
• Build the full stack behind each one: the UI, a real API backend, and the state that persists across a run
• Expose every action the agent takes as an event the verifier can grade

What we're looking for

• 6+ years as a full-stack engineer, building production SaaS
• BSc in Computer Science or a related field, preferably from a leading university
• Strong TypeScript and React, and a backend language (Python preferred)
• Experience designing APIs and data models for multi-user applications
• Production experience with Docker and cloud infrastructure (AWS preferred)
• High autonomy in an undefined space. You take a loose problem and come back with working code
• Fluent written and spoken English

Advantage

• Hands-on AI engineering: building with LLMs, agents, or evaluations
• Experience building developer tools or internal platforms
• Experience with Kubernetes
• Background in security, red teaming, or trust and safety

Alice is a trust, safety, and security company built for the AI era. We safeguard the communicative technologies people use to create, collaborate, and interact- whether with each other or with machines.

In a world where AI has fundamentally changed the nature of risk, Alice provides end-to-end coverage across the entire AI lifecycle. We support frontier model labs, enterprises, and UGC platforms with a comprehensive suite of solutions: from model hardening evaluations and pre-deployment red-teaming to runtime guardrails and ongoing drift detection.

Alice is widely considered a global leader in online safety and AI security. We have some of the most forward-thinking and passionate minds in the world working to safeguard over 3 billion users across the largest AI and tech platforms.

If you're creative and driven to secure the future of AI, we want to hear from you!