Senior/Staff Fullstack Engineer, Avatars

Synthesia; Deutschland; Vor Ort; EUR 60.000 - 90.000; Vollzeit

Benefits dieser Stelle

25 days of leave

Local holidays

Flexible remote work options

Zusammenfassung

Synthesia is seeking a full-time engineer in Germany to work on end-to-end product features in the Avatars and Generative Media domain. You will build integral experiences that combine frontend, backend, and AI capabilities, delivering real user impact.

The ideal candidate has experience with full-stack product features, a strong product mindset, and is comfortable navigating 0 to 1 environments. You will collaborate closely with product and design teams to validate and iterate on your work.

This role offers flexibility with remote working options across Europe and includes 25 days of leave plus local holidays.

Qualifikationen

• Experience building and shipping full-stack product features end-to-end in production environments.
• Ability to independently deliver a feature from concept to implementation.
• Strong product mindset with ability to define scope from ambiguous problems.

Aufgaben

• Design and deliver full-stack features that integrate frontend, backend, and AI models.
• Collaborate closely with product and design teams to translate user problems into features.
• Experiment and iterate based on user feedback and product signals.

Kenntnisse

Full-stack development

Frontend and backend experience

Product mindset

AI/ML products understanding

Collaboration skills

Jobbeschreibung

About the role

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.

What we’re looking for

• You have experience building and shipping full-stack product features end-to-end in production environments.

• You are comfortable working across both frontend and backend, and can independently deliver a feature from concept to implementation.

• You have a strong product mindset and can take ambiguous problems, define scope, and iterate towards solutions that deliver user value.

• You are comfortable working in 0 to 1 environments, experimenting, prototyping, and learning quickly rather than relying on detailed upfront specs.

• You can evaluate technical feasibility and make pragmatic trade-offs, especially when working with imperfect or evolving systems such as AI models.

• You care about reliability and user experience, aiming to build features that work consistently in real-world usage.

• You are confident collaborating with product and design, including pushing back when something is not feasible and proposing better alternatives.

• You are willing to debug and work across the stack, wherever the problem is.

• Experience with AI or ML-powered products, experimentation workflows, or feature flagging is a plus, but not required.

Other important info

• Our preference is for this role to be based either in-office or remote in the following locations: UK, Germany, Switzerland or Ireland. We may also be able to support remote workers in other locations across Europe subject to compliance and right to work checks.

• This is full-time employment only - no contractors possible - usually through OysterHR or a local entity.

• Everyone at Synthesia gets 25 days of leave + local holidays.