The Company:

We are a US-founded early stage start-up with an R&D; team located in Europe. Our mission is to make learning accessible, relevant, and individualized to keep up with the changing world.

We are developing a personalized virtual trainer experience, integrating generative AI and learning engineering to build a VR simulator for immersive hands-on skills training. Our learning engineering approach customizes content and feedback in real-time, directly improving learning outcomes.

We are looking for a Senior Unity engineer to help build the client-side infrastructure of our training platform. This is not just one-off application work. You will build the client foundation that powers VR training simulations today, and additional client targets over time, connecting it to our server according to a defined client-server architecture. The role demands strong application architecture, on-device services, and performance optimization skills.

The Role:

This is a hands-on individual contributor role focused on building and evolving key components of our platform's client-side architecture. You will build client infrastructure against a defined server-client architecture in which the server owns authoritative simulation state and logic, connecting the client to the server per spec and reflecting server-owned behavior faithfully on the device.

Key Responsibilities:

- Own and drive key components of the Unity VR client architecture so they generalize across training simulations and, over time, additional client targets, rather than serving a single application.

- Build client-side infrastructure that connects to the server according to defined contracts and reflects server-owned state and behavior on the device.

- Co-design the client-server API with the backend,



defining the data contracts.

- Develop tooling that supports content creators and other developers working on the platform.

- Use AI coding assistants as part of day-to-day development, and build and maintain the pipelines and validation that make their output reliable.

- Make pragmatic architectural decisions and manage technical priorities effectively in a fast-paced, ambiguous startup environment.

Requirements:

- Demonstrated professional Unity and C# experience, ideally 5+ years, with a track record of shipping complex applications or products.

- A portfolio demonstrating experience architecting and refactoring large-scale Unity projects.

- Direct experience building for VR, in particular Meta Quest.

- A track record of building generic, reusable infrastructure and frameworks, not just one- off features.

- Comfort working within a defined client-server architecture and with established API contracts.

- A proactive and adaptable mindset suited for the dynamic and evolving environment of an early-stage startup.

- Excellent communication and collaboration skills in English, with experience working effectively in a remote, culturally diverse team.

- A genuine interest in using technology to enhance learning and education.

Nice To Have:

- Experience targeting additional client platforms such as WebGL.

- Experience with data-driven or reactive component systems.

What We Offer:

- A high-ownership role with direct influence on product direction, architecture, and user experience, and on company culture.

- A senior opportunity to build a platform from the ground up and contribute to its growth and commercialization.

- The flexibility of a fully remote position, with working hours versátil across European time zones rather than tied to US hours.

📌 Senior Unity VR Engineer, Client Platform Infrastructure (Madrid)
🏢 Empresa líder
📍 Madrid