Full-Stack Engineer (Backend Leaning) - Creative Agents

• ElevenAgents enables businesses to deliver seamless and intelligent customer experiences, with the integrations, testing, monitoring, and reliability necessary to deploy voice and chat agents at scale.

How we work

• High-velocity: Rapid experimentation, lean autonomous teams, and minimal bureaucracy.

What we offer

• Innovative culture: You’ll be part of a generational opportunity to define the trajectory of AI, surrounded by a team pushing the boundaries of what’s possible.

About the role

We are looking for a backend-leaning full-stack engineer to help build the next generation of Creative Agents at ElevenLabs.

Our ambition is to make agents a primary way people create across ElevenCreative. We are building systems that turn ideas into high-quality audio, image and video, bringing models and creative tools together without requiring users to become prompting experts.

The creative agent is already live. You will join a small team shaping its capabilities and architecture, with ownership from backend systems and agent infrastructure through to the customer-facing experience. You will help discover what works, turn experiments into reliable features, and use real customer feedback to guide what we build next.

Your responsibilities will include:

• Building production agents and expanding their capabilities through prompts, tool use, orchestration, new models and MCP integrations.

• Designing and operating reliable backend systems for asynchronous creative generation and long-running tasks, with strong performance, observability, scalability and security.

• Developing shared evaluations and live quality monitoring, including model-based assessment of image and video outputs.

• Owning features end to end, from identifying user needs and prototyping to shipping across the stack and supporting them in production, alongside product, design and engineering.

You will help shape both what the agent can do and how people use it across ElevenCreative. The work combines substantial greenfield development with improving and operating a live product.

Requirements

We care about evidence of exceptional engineering: products you have shipped, difficult problems you have solved, and systems you have owned.

We are looking for:

• Strong backend engineering skills, experience operating production systems, and sound fundamentals in APIs, cloud infrastructure, storage and asynchronous processing.

• Hands-on experience developing agents, with an understanding of prompts, tools, execution logic, evaluations and the challenges of reliable, secure operation.

• Evidence of independent, end-to-end ownership and confidence working across the stack, including frontend delivery when needed.

• Good product judgement, clear communication and enthusiasm for creative agents.

We may also consider exceptional engineers with closely relevant experience. Familiarity with HTTP, WebSockets and asynchronous workers will help you build reliable communication between services and recover from failures.

Experience with multimodal generation, creative editors, MCP, or building products in a small, fast-moving team would be particularly valuable.

Location:

This role is remote and can be executed globally. If you prefer, you can work from our offices in London, New York, San Francisco, and Warsaw.

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