Psychologist/Human Behaviour

4 days ago

Sydney, New South Wales, Australia Qiri Full time US$90,000 - US$120,000 per year

is building the
Knowledge Twin,
a Thinking OS that acts as a personal second brain. It remembers, reasons, adapts, and explains, helping people and organisations make better decisions with transparency, privacy, and trust.

We're an early-stage, pre-seed startup pushing the boundaries of
AI + human cognition
. Our mission is bold: to create personal AI that doesn't just answer, but
thinks with you and for you
.

The Role

We are looking for a
Cognitive Scientist / Psychologist
to help us bridge
human thinking and AI design
. You'll work alongside AI engineers and product designers to model how humans:

  • process information,
  • remember and forget,
  • make decisions (with all the biases and heuristics),
  • and adapt to new knowledge over time.

Your insights will directly shape how the Knowledge Twin stores memory, reasons contextually, and interacts with users in ways that feel natural, trustworthy, and human-like.

Responsibility:

  • Design frameworks for
    memory, reasoning, and decision-making
    that reflect real human cognition.
  • Translate psychological & cognitive science insights into
    product requirements and AI behaviour models
    .
  • Collaborate with AI engineers on integrating human-like bias-awareness, learning, and adaptation.
  • Conduct user research to understand
    how people engage with a digital "thinking partner."
  • Help define
    trust, transparency, and ethical interaction principles
    in the product.

What we are looking for

  • Advanced degree (Master's/PhD) in
    Cognitive Science, Psychology, Behavioural Science, or related field
    .
  • Strong grasp of
    decision-making, memory, cognitive biases, and human-computer interaction
    .
  • Ability to translate theory into
    practical frameworks for product and AI systems
    .
  • Curiosity, creativity, and excitement about building the
    next generation of AI companions
    .

Bonus Points:

  • Experience with
    AI/ML, HCI, or knowledge management systems
    .
  • Research in areas like
    cognitive architectures, behaviour modelling, or adaptive learning systems
    .
  • Prior work with startups or fast-paced product teams.

Why Join Us:

  • Opportunity to shape the
    core cognitive model
    of a product category we're defining: the
    Thinking OS
    .
  • Work with a small, ambitious team at the frontier of
    AI + human behaviour
    .
  • Early-stage equity in a high-growth startup.
  • Flexible, collaborative, and mission-driven culture.


Apply Now

If you're passionate about blending
human cognition and AI innovation
, we'd love to hear from you. Drop us a message here or apply via

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