Designer HCI Researcher

Open to PhD positions

Charles
Njoku.

Understanding how people
and intelligent systems
work together.

My research interests centre on how people understand, coordinate with, and adapt alongside intelligent systems. Drawing on human factors and design, I develop models, simulations, and experimental tools to investigate human performance and the changing dynamics of collaboration.

Explore my research
Charles Njoku in a pink blazer, standing among trees
01 / In colour
Design practice × Experimental inquiryBased in the United Kingdom
01 /

Research interests

How does coordination between people and intelligent systems develop, break down, and recover?

I want to understand how interaction history, task demands, and system capabilities shape trust, judgement, and shared control. I’m particularly interested in changes that overall performance can conceal: reduced verification, shifting responsibility, or a declining ability to recover when something goes wrong.

My longer-term aim is to develop experimentally models and interventions that improve human–system integration across complex systems and workflows.

I.

Human–AI Collaboration
& Teaming

How do people and intelligent agents develop patterns of coordination over time? I’m interested in trust, reliance, ownership, and the sharing of initiative and responsibility—including how AI participation changes collaboration between people.

II.

Representation
& Sensemaking

How are tasks, capabilities, intentions, uncertainty, and shared work represented and understood? I’m interested in mental models and computational representations that help explain how people anticipate behaviour, interpret situations, and coordinate action.

III.

Human Performance
& Adaptation

How do attention, workload, expertise, and control change as people work with intelligent systems? I want to investigate when adaptation supports effective performance, when it conceals emerging difficulties, and what enables recovery.

02 /

How I investigate

Understand. Make. Study.
Then ask again.

I combine theories of cognition and behaviour with models, simulations, and human-in-the-loop experiments. Building research environments lets me make assumptions explicit, manipulate conditions, and examine how attention, decisions, and coordination unfold over time. Each stage can send me back to rethink the last.

01Desk Research
Exploring concepts, existing evidence, and open questions to understand the problem, challenge assumptions, and identify a useful direction for inquiry.
02Iterative Design
Tinkering with possible approaches through sketches, low-fidelity prototypes, and feedback—making ideas tangible enough to question, compare, and refine.
03Modeling & Simulation
Representing tasks, system behaviour, and coordination processes through computational models and simulations. High-fidelity web and VR environments make it possible to manipulate conditions and study continuous feedback between people and systems.
04Experimental Design
Defining tasks, conditions, and measures that address the research question, combining methods such as eye tracking, behavioural logging, performance measures, and participant reports.
05Human-in-the-loop Studies
Bringing people into the environment to study how they interact, adapt, and make decisions as demands change, including moments of interruption and recovery.
06Data Analytics
Combining gaze, interaction, performance, and participant feedback to examine behavioural strategies and change over time. Statistical analysis, temporal modelling, and visualisation help assess uncertainty and identify patterns that aggregate measures can miss.

I aim to make the experimental tools I build reproducible and reusable, so that questions and findings can be examined beyond the setting in which they first emerged.

03 /

Research in the making

FLIDIS overview showing the flight display, interaction interfaces, scenario builder, analysis, assessments, and gaze measures

Experimental infrastructure

FLIDIS

Flight Deck Interaction Simulator

A browser-based experimental environment for investigating how people manage concurrent tasks. FLIDIS combines continuous manual control with multimodal secondary tasks, bringing together control measures, interaction events, and participant reports to examine task interference and behavioural strategies.

  • Multimodal interaction
  • Dual-task research
  • Simulation

Public release in preparation

A dedicated project page and a cleaned-up version that researchers can run locally are planned.

Outputs & engagement

Main teaser figure from the FLIDIS ICMI demo paper

ICMI 2026 / Accepted demonstration

FLIDIS: An Experimental Infrastructure for Dual-Task Research in Continuous Control and Multimodal Interaction

Charles Njoku & James Blundell

28th ACM International Conference on Multimodal Interaction · Napoli, Italy · October 2026

DOI: 10.1145/3776574.3832527
A participant trying FLIDIS with a joystick at HCII 2026; her face is blurred for privacy

HCII 2026 / Student Design Competition

FLIDIS — Flight Deck Interaction Simulator

Charles Njoku

28th HCI International Conference · Montréal, Canada · July 2026

A presentation and hands-on introduction to FLIDIS as an environment for investigating flight deck interaction.

AREA eye-tracking heatmap across a simulated airport scene

Open research toolkit

AREA

AR Eye-Tracking Analyser

Measuring visual attention in context. AREA aligns gaze with task events from AR headsets and desktop eye trackers, with tools for heatmaps, fixation measures, and areas-of-interest analysis to examine how attention unfolds during an activity.

  • Eye tracking
  • Augmented reality
  • Open source
Explore the project
Coming soon

Air Traffic Decision Lab

An airport ground-traffic simulation for studying automation trust and decision-making during conflict scenarios.

Proposed research question: How do automation reliability, conflict demands, and interaction history shape verification, decisions, and intervention?

Coming soon

Cross-feed

A Multiple Resource Allocator workload management layer for a simulated adaptive flight deck interface.

Proposed research question: When does automated resource allocation support human performance, and how does it affect awareness, control, and recovery?

04 /

A little background

From designing products
to asking deeper questions.

I spent more than eight years designing digital products and services across industries, from financial services to healthcare and learning. Along the way, I co-founded Spire, a UX research and product testing startup, and raised $100k in pre-seed funding.

That practice led me towards questions about the relationship between people and technology: what makes an interaction understandable, what happens under pressure, and how design can support human capability.

I studied Safety & Human Factors in Aviation at Cranfield University (MSc, 2025–2026), where I developed FLIDIS for my thesis, supervised by Dr. James Blundell and mentored by Dr. Wen-Chin Li. My thesis is now submitted, and I’m looking towards doctoral research.

05 /

Beyond the research

Miles, people,
and things that matter.

Away from research, I make time for running, raising money for causes I care about, and sharing what I’ve learned with design and tech communities.

Charles celebrating with his finisher medal at Brighton, wearing a Sussex Beacon running vest
A finish line, a medal, and a cause worth running for.

Running & fundraising

One foot in front
of the other.

I took up running in 2025. It became a way to reset, challenge myself, and turn a personal goal into something that helps other people.

From evening races to half-marathon finish lines, I run to support heart research, HIV care, and children’s safety.

Speaking, community & mentorship

Learning is better
when it’s shared.

I’ve been part of design and tech communities throughout my career. I enjoy conversations that connect practice with new ideas, whether on a panel, in a workshop, or one-to-one.

I also mentor early-career designers and founders where I can. Sharing the lessons, questions, and occasional wrong turns is part of the work.

Invite me into the conversation
Charles speaking into a microphone on a panel at Afrinext
Sharing perspectives at Afrinext.

Professional communitiesRoyal Aeronautical Society · CIEHF · BCS

06 /

Open to collaborations

Have something
in mind?

I’m interested in thoughtful collaborations across research, design, prototyping, and community work.

Tell me about the problem, who it matters to, and where you think I could contribute. A short outline is enough to start a conversation.

Paid projects, non-profit work, and pro bono proposals are welcome. We can work out the scope and fit together.

Prefer email?

A little context goes a long way. Fields marked * are required.

What are you trying to do, who is it for, and what stage are you at?

Your details are sent through FormSubmit to hello@charlesnjoku.com so I can respond. You’ll complete a spam check in a new tab before sending.

Open to PhD positions

Good questions deserve
a conversation.

I’d love to hear from potential supervisors and collaborators working on human–AI teaming, representation and sensemaking, human performance, and adaptation in complex systems.

hello@charlesnjoku.com