Senior Backend Engineer in City of London

Our vision: From blockbuster films and AAA games to immersive experiences, the demand for photo-real 3D content has never been higher - but creating photorealistic assets is slow, expensive, and manual with no current scalable solution available. At M-XR, our mission is to democratise the creation of high-quality 3D assets and empower brands, studios, and creators to build infinite photo-real 3D experiences. Our proprietary technology Marso allows anyone to capture real-world objects into production-ready photorealistic digital twins with unmatched material (PBR) accuracy - enabling the first real-world PBR capture pipeline that can operate anywhere. Marso is trusted by the most demanding studios in film and gaming.

We see the future of 3D as AI-assisted, and we’re building the tech to make that happen. We are creating the world’s highest quality and most comprehensive 3D-PBR data-set and training the next generation of AI models to assist artist workflows.

About the role: We are looking for a Senior Backend Engineer to join the team and be the driving force that designs, builds and scales the backend application services for our web platform. At M-XR we developed Marso as a way to capture real-world PBR material data alongside conventional photogrammetry from simple flash photography. Marso is now actively being used by an array of studios, brands & museums to digitise previously unobtainable assets at scale. This gives us one of the most unique and physically accurate 3D datasets in the world.

Now we’re building an ML-powered pipeline that can automatically predict material properties (diffuse, roughness, specular, metallic, normals) from photogrammetry input alone - without flash. This is made possible by tapping into our uniquely rich dataset of real-world material scans. Our goal is to remove the need for manual texturing and enable full end-to-end automation, from photos to PBR assets at high fidelity and scale.

You’ll be helping bring this technology to market. We are creating a web SaaS platform that will bring completely new capabilities for PBR generation to artists worldwide based on state-of-the-art AI models that we create.

Where you will have impact: As the Senior Backend Engineer for our web platform, you’ll be responsible for bringing a completely new product to market based on state-of-the-art AI capabilities. You will:

• Define, build and maintain the backend application services for our web SaaS platform, enabling new 3D-PBR asset creation workflows.
• Work with frontend developers to design and implement high-performance APIs that deliver exceptional user experiences.
• Integrate with ML infrastructure to orchestrate model workflows, manage job queues, and deliver results to users.

This is a high-impact role for someone that loves to define and bring completely new technologies to market - with the experience that defines how we do it.

What you will do:

• Design and implement user-facing APIs to support frontend user flows (FastAPI)
• Build robust user authentication, authorisation, and account management (Auth0)
• Integrate payment processing and subscription management (Stripe)
• Design and manage user databases and data models (MongoDB, PostgreSQL)
• Implement asset storage, retrieval, and management systems (AWS S3)
• Build job queue management for async ML workflows (SNS, SQS)
• Setup application monitoring and logging (CloudWatch, Grafana, Prometheus)
• Implement CI/CD for application deployment (Bitbucket Pipelines)
• Create API documentation and developer tools

What we are looking for:

• 5+ years backend development experience with production applications
• Track record with at least one live application currently serving users in production
• Proven experience designing and implementing RESTful APIs at scale
• Strong experience with Python and modern web frameworks
• Comfortable working in TypeScript for frontend integration debugging
• Experience in building infrastructure for image/video/3D or graphics-intensive/data-intensive web apps

Bonus points:

• Experience working with researchers, product engineering and product managers bringing new AI capabilities to market
• A love of games, films and understanding of photogrammetry, scanning, graphics, rendering and AAA 3D asset creation.

What we offer:

• The chance to shape the future of 3D content creation in a fast-moving startup
• Direct contact & close relationships with some of the biggest game & film studios globally using M-XR's technology
• Work with passionate engineers, artists, and researchers at the frontier of graphics & AI
• Unique opportunities for professional growth, autonomy, and leadership
• Competitive salary and equity
• Flexible hybrid working
• Visa sponsorship for international candidates

If you are interested in this role, we would love to hear from you! Please email us at careers@m-xr.com.