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Open nowFirst seen 6 days ago

Senior Full-Stack Engineer

activefence/d5.00549 open roles

Where
Ramat Gan, IL
Work mode
Hybrid
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Your applicationOpen nowSenior Full-Stack Engineeractivefence/d5.005 · Ramat Gan, IL

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Early applications get read.

13.3% of postings close within 7 days. Measured by our own scanner across the market. activefence/d5.005 postings stay open a median of 3 days.

Share of postings closed within
  1. 2.1%1 day
  2. 4.6%3 days
  3. 13.3%7 days
  4. 21.3%14 days
  5. 35.7%30 days
  6. 59.1%60 days
This job: first seen 6 days ago

activefence/d5.005 median: 3 days open

The posting

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

Requirements

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

About Alice

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!

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