Salary :
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This position is posted by Jobgether on behalf of a partner company. We are currently looking for a Staff Fullstack Engineer, Avatars in France.
You will join a cutting-edge AI product engineering environment where generative media and avatar technologies sit at the core of user-facing innovation. In this role, you will work across the full stack to design and deliver end-to-end features that combine frontend experiences, backend systems, and AI model integrations. You will help build and evolve tools that enable users to create, customize, and interact with AI-generated avatars in intuitive and reliable ways. The work is highly experimental and product-driven, often involving 0-to-1 feature development where requirements are fluid and rapid iteration is essential. You will collaborate closely with product, design, and AI research teams to translate emerging model capabilities into scalable product features. This is a high-impact role for an engineer who thrives at the intersection of systems thinking, product intuition, and AI-driven innovation.
Accountabilities:
- Design and deliver full-stack product features across avatar generation and generative media systems, from frontend interfaces to backend services and AI model integration layers.
- Build scalable backend systems that support model inference, feature logic, and data workflows, ensuring reliability and performance at production scale.
- Develop intuitive frontend experiences that allow users to interact seamlessly with AI-powered avatar creation and customization tools.
- Own features end-to-end, from ideation and scoping through implementation, experimentation, deployment, and iteration.
- Collaborate closely with product and design teams to define use cases, validate feasibility, and translate ambiguous requirements into actionable technical solutions.
- Work directly with AI models (both internal and external), assessing capabilities, constraints, and reliability to guide product decisions.
- Implement feature-flagged releases, monitor real-world usage, and iterate based on performance and user feedback.
- Contribute to architectural decisions that ensure long-term scalability and maintainability across the full stack.
Requirements
- Proven experience building and shipping full-stack product features end-to-end in production environments.
- Strong ability to work across frontend and backend systems, independently delivering complete features from concept to deployment.
- Excellent product thinking skills, with the ability to navigate ambiguity, define scope, and iterate toward high-impact solutions.
- Experience working in 0-to-1 environments, comfortable with experimentation, prototyping, and rapid iteration.
- Strong understanding of system design, backend architecture, and frontend development best practices.
- Ability to evaluate technical feasibility and make pragmatic trade-offs, especially when working with AI or evolving systems.
- Strong collaboration skills with product and design teams, including the ability to challenge assumptions and propose better alternatives.
- Comfortable debugging and working across the full stack to resolve complex issues.
- Experience with AI/ML-powered products, experimentation frameworks, or feature flag systems is a strong plus.
Benefits
- Competitive compensation starting from €130,000 base salary plus equity/stock options.
- Fully remote flexibility across eligible European regions, UK, or Switzerland.
- 25 days of annual leave plus local public holidays.
- Comprehensive hiring process designed to be efficient and candidate-focused.
- Opportunity to work on industry-leading generative AI and avatar technologies used by global enterprises.
- High-ownership engineering culture focused on autonomy, speed, and product impact.
- Access to cutting-edge proprietary AI research and in-house model development.
- Work in a mission-driven environment prioritizing responsible and human-centered AI development.
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