# Staff Fullstack Engineer, Avatars

**Company**: Synthesia
**Location**: Europe
**Work arrangement**: remote
**Experience**: staff
**Job type**: Full time
**Category**: Engineering
**Industry**: Technology
**Wikidata**: https://www.wikidata.org/wiki/Q12057983

**Apply**: https://jobs.ashbyhq.com/synthesia/3f9d85f6-0750-400f-a129-6a0f8ab76476
**Canonical**: https://yubhub.co/jobs/job_11d73c16-e7f

## Description

You will work on end-to-end product features across the Avatars and Generative Media domain, building experiences that sit at the core of Synthesia's product.

You will design and deliver features that combine frontend, backend, and AI model capabilities, helping users create and customize avatars, generate content, and interact with generative systems in a reliable and intuitive way.

You will take ownership of features from idea through to production, working with loosely defined requirements to scope, prototype, and ship solutions that deliver real user impact.

You will work directly with AI models (both third-party and in-house), evaluating what is possible, understanding reliability constraints, and shaping product decisions based on those capabilities.

You will build across the stack, including:

- Backend systems to support feature logic and model integration

- Frontend experiences that allow users to interact with generative features

- End-to-end workflows that connect user input, model output, and product behavior

You will frequently work on 0 to 1 problems, such as introducing new avatar capabilities or generative features, where experimentation and iteration are critical to success.

You will collaborate closely with product and design to:

- Translate user problems into experiments and features

- Validate what works reliably with underlying models

- Iterate quickly based on feedback and real usage

You will ship features behind feature flags, measure outcomes, and continuously refine based on product and user signals.

## Skills

### Required
- full-stack development
- AI model integration
- backend systems
- frontend experiences
- end-to-end workflows

### Nice to have
- AI or ML-powered products
- experimentation workflows
- feature flagging