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I'm Mikita Kavaliou, a Senior Software Engineer and AI Specialist with 7+ years delivering secure, high-performance web and mobile applications across fintech, e-commerce, real estate, healthcare, and SaaS. I also focus on AI-driven development for rapid product delivery and AI model integration to create intelligent, user-centric experiences. I thrive in cross-functional teams, turning complex problems into scalable, maintainable solutions while prioritizing user needs and measurable impact. I'm looking for a dynamic team to build innovative products at scale.…I'm Mikita Kavaliou, a Senior Software Engineer and AI Specialist with 7+ years delivering secure, high-performance web and mobile applications across fintech, e-commerce, real estate, healthcare, and SaaS. I also focus on AI-driven development for rapid product delivery and AI model integration to create intelligent, user-centric experiences. I thrive in cross-functional teams, turning complex problems into scalable, maintainable solutions while prioritizing user needs and measurable impact. I'm looking for a dynamic team to build innovative products at scale.

Mikita Kavaliou

Full Stack Developer, AI Developer, Front-End Developer, +4

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I'm Mikita Kavaliou, a Senior Software Engineer and AI Specialist with 7+ years delivering secure, high-performance web and mobile applications across fintech, e-commerce, real estate, healthcare, and SaaS. I also focus on AI-driven development for rapid product delivery and AI model integration to create intelligent, user-centric experiences. I thrive in cross-functional teams, turning complex problems into scalable, maintainable solutions while prioritizing user needs and measurable impact. I'm looking for a dynamic team to build innovative products at scale.…I'm Mikita Kavaliou, a Senior Software Engineer and AI Specialist with 7+ years delivering secure, high-performance web and mobile applications across fintech, e-commerce, real estate, healthcare, and SaaS. I also focus on AI-driven development for rapid product delivery and AI model integration to create intelligent, user-centric experiences. I thrive in cross-functional teams, turning complex problems into scalable, maintainable solutions while prioritizing user needs and measurable impact. I'm looking for a dynamic team to build innovative products at scale.

Available to hire

I’m Mikita Kavaliou, a Senior Software Engineer and AI Specialist with 7+ years delivering secure, high-performance web and mobile applications across fintech, e-commerce, real estate, healthcare, and SaaS. I also focus on AI-driven development for rapid product delivery and AI model integration to create intelligent, user-centric experiences.

I thrive in cross-functional teams, turning complex problems into scalable, maintainable solutions while prioritizing user needs and measurable impact. I’m looking for a dynamic team to build innovative products at scale.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Intermediate

AI Collection (Video)

Intermediate

Language

Russian

Fluent

English

Fluent

Polish

Fluent

Spanish; Castilian

Advanced

French

Advanced

German

Advanced

Portuguese

Advanced

Work Experience

Full Stack Web Developer at BaseSystem

February 1, 2024 - November 26, 2025

Designed and deployed features for an e-commerce platform, improving customer engagement by 15%. Optimized Laravel-MySQL backend to reduce API response time by 30%, and integrated Stripe payments to boost conversions by 5%.

Full Stack Web Developer at Upwork

January 1, 2024 - November 26, 2025

Led end-to-end development for multiple web apps; built robust Node.js and Nest.js backends following clean architecture; applied AI-driven development workflows to accelerate delivery and improve code quality.

Senior Software Engineer at Healthmine

January 1, 2024 - January 1, 2024

Built the Personal Health Assistant web and mobile apps (React, React Native, TypeScript, Node.js, PostgreSQL, GraphQL, Kotlin, AWS) to enable personalized health management. Implemented scalable frontend architecture with React, Zustand, and Material-UI; created real-time data visualizations and a scalable microservices backend with GraphQL endpoints.

Software Engineer at BigCommerce

December 1, 2020 - December 1, 2020

Developed a robust eCommerce platform using Azure, MongoDB, and React; built responsive frontend and native mobile apps; implemented OAuth and JWT-based authentication across modules to ensure secure, personalized experiences.

Full Stack Web Developer at BaseSystem

February 20, 2024 - November 26, 2025

Designed and deployed 3 major features for an e-commerce platform, increasing customer engagement by 15%. Optimized the backend (Laravel, MySQL) to reduce API response time by 30%, improving frontend React experience. Integrated Stripe payment API, securing the transaction flow and increasing conversion rate by 5%.

Full Stack Web Developer (Freelance) at Upwork

January 20, 2024 - November 26, 2025

Led end-to-end development for multiple web applications, collaborating directly with clients. Implemented robust backend architectures with Node.js and Nest.js, following clean architecture. Applied AI-driven development workflows to accelerate delivery and improve code quality.