Figma prototyping Web UI/UX Designer UX/UI design Mobile UI/UX Design adaptive web design Adaptive design User Interface Design Wireframing web developer
Oleksandr Kremer

Oleksandr Kremer

Ukraine

Web Design · Mobile Apps Design

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54
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Organic Foods Made Easy & Healthy
78 USD
150
Organic Foods Made Easy & Healthy
Web Design
Organic Foods Made Easy & Healthy Food, Healthy and Sport The Healthy Nutrition Site. Organic foods .
Online English School for Adult Ideas
205
Online English School for Adult Ideas
Web Design
A website for children and adults to learn English in different directions.
Uros S.

Uros S.

Serbia

Web Design · Web Programming

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54
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Senior Full Stack Developer with extensive experience in education, healthcare, fintech, and enterprise web applications. Specialized in Node.js, React/Next.js, Vue/Nuxt, and scalable backend architecture. Especially experienced in SMART on FHIR integration, OAuth2 + PKCE security implementation, and EHR interoperability with enterprise platforms. Proven ability to architect and deliver secure, production-grade systems across regulated industries.