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(01) — Manifesto
Denis Efremov is a designer and engineer working where craft meets computation — shaping calm, precise interfaces and the machine intelligence that makes them feel effortless.
(02) — Profile
I’m a UX/UI designer and AI engineer who builds products end-to-end — from the first user flow sketched in a notebook to the model running quietly underneath.
My work lives at the intersection of human-centered design and applied AI: design systems that scale, interfaces that disappear, and intelligent features that feel less like tools and more like instinct. I care about the millimetre of a corner radius as much as the millisecond of a response.
16Years designing & shipping
40Products & features launched
12AI systems in production
(03) — Expertise
A full stack of
design & intelligence.
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01
UX Design
Research, user flows, information architecture and the kind of structure users never have to think about.
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02
UI Design
High-fidelity interfaces, type, colour and motion — pixel-precise and built to feel premium.
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03
Interaction Design
Micro-interactions, transitions and feedback loops that make a product feel alive in the hand.
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04
Design Systems
Tokenised, documented, scalable libraries that keep teams fast and products consistent.
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05
AI Engineering
LLM apps, agents, RAG and model integration — shipping intelligence that’s reliable in production.
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06
Prototyping
Code-grade prototypes that prove the idea — interactive, testable and ready for real users.
(04) — Selected Work
Selected
work.
Tap a project to open the case study. (Sample layout — real projects landing soon.)
(05) — Contact