Founder
Madalina Raicu
Founder · Ray Group
Psychology-informed UX engineering for FinTech, DeFi, and complex products — and the founder of Ray Group, a group of specialist agencies.
About
Engineering UX that holds under pressure.
HCI, University of Manchester · EthCC: cognitive biases and heuristics in DeFi
Senior UX Engineer specialised in Human-Computer Interaction, with delivery experience across TradFi and DeFi. Previously at BlackRock on Aladdin — portfolio management, equity trading, scenario evaluation. Executive certifications: Harvard Business School (Business Analytics, Economics for Managers, Financial Accounting); Stanford (Machine Learning).
Mentored at EthGlobal and ngGirls. Writes on Medium about UX psychology, agentic development, and shipping human-centred product. Works with teams internationally.
Selected work
Where the practice was shaped.
BlackRock · Aladdin
Engineering on Aladdin across portfolio management, equity trading, and scenario evaluation — data-dense financial UX at institutional scale.
EthCC · ETH Prague · ETH Milan
International talks on cognitive biases, heuristics, and DeFi-native UX — the same methodology behind Ray Group audits and the DeFi UX MCP.
Manchester · Harvard · Stanford
Computer Science (HCI) at the University of Manchester; executive certifications from Harvard Business School and Stanford Machine Learning.
Ray Group
Founded Ray Group as a group of specialist agencies — DeFi and FinTech UX, agentic AI tools, branding, compliance and risk, and commercial.
Speaking
Talks on UX psychology in Web3 and DeFi.
Selected international appearances. Full recordings live on the conferences page.
EthCC 6
Cognitive biases and heuristics applied in DeFi
Ethereum Community Conference
How behavioural science principles can shape better decision-making and product design in decentralised finance.
Prague
Case study on Web3 UX
ETH Prague
Lessons learned designing real-world Web3 products: walkthroughs, friction points, and the patterns that worked.
Milan
DeFi-focused UX
ETH Milan
An exploration of how DeFi-native users actually behave, and what that means for the next generation of interfaces.
Work with Ray Group
Hire the practice, not a pitch deck.
Ray Group delivers psychology-informed UX reviews, MCP servers, and agent setup for teams shipping FinTech, DeFi, and regulated products.