Full-Stack Engineer (Backend Leaning) - Creative Agents

Role overview Help develop creative agents that turn ideas into generated audio, images, and video. This backend-leaning full-stack role spans agent infrastructure and customer-facing features: you’ll experiment with capabilities, make successful ideas reliable in a live product, and use customer feedback to guide improvements.

Responsibilities - Build production agents and extend them with prompts, tools, orchestration, new models, and integrations. - Design and operate secure, observable backend services for asynchronous generation and long-running tasks. - Develop shared evaluations and live quality monitoring, including model-based assessment of image and video outputs. - Own features from user discovery and prototyping through cross-stack delivery and production support. - Work with product, design, and engineering partners to shape agent capabilities and the user experience.

Requirements - Strong backend engineering fundamentals and experience operating production systems. - Knowledge of APIs, cloud infrastructure, storage, and asynchronous processing. - Hands-on experience developing agents, including prompts, tools, execution logic, and evaluation. - Understanding of reliability and security challenges in agent systems. - Evidence of end-to-end ownership and ability to contribute across the stack, including frontend work when needed. - Good product judgment and clear communication.

Nice to have Experience with HTTP, WebSockets, asynchronous workers, multimodal generation, creative editors, or MCP integrations is valuable. Experience in a small, fast-moving team is also useful.

Benefits and work setup The position is remote globally, with optional offices in London, New York, San Francisco, and Warsaw. Support includes professional development and coworking stipends, an annual team gathering, and a stipend for meeting colleagues.