Nels Numan(he/him)

Research Scientist + Engineer at Google XR

I’m a researcher at Google XR, where I work in the BIRD Lab on XR systems shaped by where you are and what’s going on around you: interfaces that arrange themselves within space, content generated to suit it, assistance that follows what you’re doing. Drawing on human-computer interaction, generative AI, and computer vision, I build and study systems that help people work more naturally with one another and with AI.

My PhD research in the VECG Group at UCL examined asymmetric collaboration in mixed reality, studying how environmental representations can be built, augmented, and transformed to support shared understanding across differences in interface, role, viewpoint, and physical context.

I hold a PhD, MSc, and BSc in Computer Science and have completed research internships at Google, Niantic Labs, Microsoft Research, and TNO Research.

Education

Jul. 2021 — Mar. 2026London, UK

Ph.D. Computer ScienceUniversity College London

Research group: Virtual Environments and Computer Graphics (VECG). Thesis: “Constructing Shared Space: Designing for Asymmetry in Collaborative Mixed Reality”. Supervisors: Prof. Anthony Steed (primary) and Prof. Simon Julier (secondary). Passed viva with no corrections.
Sept. 2013 — Feb. 2018Leiden, Netherlands

B.Sc. Computer ScienceLeiden University

Thesis: “A Comparative Performance Analysis of Feature Description Algorithms”. Supervisor: Prof. Michael Lew.

Work Experience

May. 2026 — PresentSeattle, WA, USA

Research Scientist / EngineerGoogle

  • Building and studying the future of AI-driven XR interfaces at the Blended Intelligence Research & Devices (BIRD) Lab.
May. 2025 — Sept. 2025Mountain View, CA, USA

Research / Software Engineering InternGoogle

  • Continued my research projects at the BIRD Lab while collaborating with researchers and engineers across the Google XR organization.
  • Led the research and writing of a first-author paper (in preparation) introducing a novel system driven by 3D Gaussian Splatting (3DGS). Additionally, served as a core contributor to three other publications including Sensible Agent (ACM UIST ‘25) and XR Blocks.
Oct. 2023 — Jun. 2024London, UK

Research InternNiantic Labs

  • Conducted research on the future of location-based AR authoring under the mentorship of Jessica van Brummelen and Gabriel Brostow as a part-time internship during my Ph.D. studies.
  • Authored a first-author paper on CoCreatAR at ACM CHI ‘25, which received a Best Paper Honorable Mention award and had a related non-provisional patent application filed. I presented a follow-up work titled AdjustAR as a poster at ACM UIST ‘25.
Oct. 2020 — Jul. 2021Amsterdam, Netherlands

Data ScientistIBM

  • Built and deployed custom ML models to solve client-specific problems and improve enterprise processes.
  • Presented insights to technical and non-technical stakeholders to support strategic decisions.
Feb. 2020 — Oct. 2020Amsterdam, Netherlands

Cloud Solution Architect Intern (Data & AI)Microsoft

  • Developed data models and analytics solutions for global clients and internal teams.
  • Designed a proof-of-concept system using a data-driven approach to improve data center construction management.
Jul. 2019 — Aug. 2020The Hague, Netherlands

Research InternNetherlands Organisation for Applied Scientific Research (TNO Research)

  • Conducted research towards a novel approach to head-mounted display (HMD) removal within RGB-D images at the Intelligent Imaging group under the mentorship of Frank ter Haar.
  • Designed and evaluated a generative adversarial network (GAN) for the joint inpainting of RGB-D images. Described the results in my MSc thesis as well as a paper at the VHCIE workshop at IEEE VR 2021.

Publications

Conference & Journal Papers

Sep. 2025 arXiv 2025

XR Blocks: Accelerating Human-Centered AI + XR Innovation

David Li*, Nels Numan†, Xun Qian†, Yanhe Chen†, Zhongyi Zhou†, Evgenii Alekseev, Geonsun Lee, Alex Cooper, Min Xia, Scott Chung, Jeremy Nelson, Xiuxiu Yuan, Jolica Dias, Tim Bettridge, Benjamin Hersh, Michelle Huynh, Konrad Piascik, Ricardo Cabello, David Kim, Ruofei Du*

Posters & Workshop Papers

Service & Teaching

Reviewer

2021—2024

Postgraduate Teaching AssistantUniversity College London

  • Virtual Environments (COMP0113) with Prof. Anthony Steed
  • Systems Engineering (COMP0016) with Prof. Dean Mohamedally
2022—2025

Mentor

Grants & Awards

Jan. 2025

Departmental Travel Grant

UCL Computer Science
Oct. 2024

Departmental Travel Grant

UCL Computer Science
Jul. 2021 — Jul. 2024

Ph.D. Studentship

European Union’s Horizon 2020 Research and Innovation Program (Project RISE), grant no. 739578.
Jun. 2022

UCL Nominee for Microsoft Research PhD Fellowship

Mar. 2019

Conference Travel Grant

Delft Sports Engineering Institute

Skills

Programming Languages and Frameworks

  • Python
  • C++
  • C#
  • Java
  • JavaScript
  • Node.js
  • TypeScript
  • PHP
  • R
  • SQL
  • TensorFlow
  • PyTorch
  • MRTK
  • Niantic ARDK

Software and Services

  • Unity
  • Adobe Illustrator
  • Adobe Photoshop
  • Adobe InDesign
  • TouchDesigner
  • AWS
  • Azure
  • GCP

Current Work Eligibility

  • European Union
  • United States