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Mykola S.

@mykolas67

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5.0
2

1.2

1.2

100%

🥇🥇🥇 Clean Code. Long-Term Support.🥇🥇🥇

$30 USD / Hour

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Poland (1:46 PM)

Joined on April 27, 2026

$30 USD / Hour

With over 7 years of professional experience, I specialize in building scalable Web, Mobile, Blockchain, and AI-powered applications for startups, growing businesses, and enterprise clients.. I help businesses transform ideas into scalable, production-ready platforms by combining modern web technologies, blockchain infrastructure, and artificial intelligence solutions. I don’t just write code - I focus on delivering solutions that are stable, scalable, and ready for real users. -Core Expertise Full-Stack Web Development • End-to-end web application development • Scalable backend systems • Real-time applications and live features • Design advanced dashboards, admin panels, and management systems • Improve and scale existing/legacy codebases • Architect real-time applications with live updates and interactive features Mobile Application Development • Cross-platform mobile apps • High-performance responsive UI/UX • API integrations • Real-time mobile functionality • Scalable mobile architecture Blockchain & Web3 Development • Smart contract development and integration • Crypto payment systems • Wallet integrations • DeFi and Web3 applications • NFT and blockchain-based platform • Secure decentralized system architecture AI & Intelligent Systems • AI-powered web and mobile applications • LLM integrations (OpenAI, Gemini, Claude) • AI chatbots and assistants • OCR and document processing systems • Recommendation engines • AI automation workflows • RAG and vector database integration Specialized Industry Experience • iGaming & gambling platforms • Fintech and payment systems • Blockchain ecosystems • AI-driven platforms • Real-time interactive systems • Marketplace and booking platforms -Technology Stack Frontend • React.js • Next.js • Vue.js • Nuxt.js • Angular • TypeScript Backend • Node.js • Laravel • Python • Ruby on Rails • Express.js • FastAPI Mobile • React Native • Flutter Blockchain • Solidity • Web3.js • Ethers.js • Smart Contracts • Crypto APIs • Rust AI & data • OpenAI API • Gemini API • LangChain • Vector Databases • AI Agents • OCR Systems Databases & Cloud • PostgreSQL • MySQL • MongoDB • DynamoDB • Redis • Amazon RDS • AWS -Why Clients Work With Me • Strong focus on business goals and product quality • Clean, scalable, and maintainable architecture • Fast communication and proactive collaboration • Ability to work independently or within teams • Reliable delivery and long-term technical support • Experience handling complex and high-traffic systems I’m passionate about building modern digital products that combine performance, scalability, and innovation. If you’re looking for a developer who can take ownership, solve complex technical challenges, and deliver real results — let’s discuss your project.

Verifications

On time

100%

On budget

100%

Accept rate

75%

Portfolio

Portfolio

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5.0 · 2 Reviews
2 Reviews
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Manu E.

5.0

£20 GBP

1 month ago

Apocalyptic Map Creator for Ragemp

Working with Mykola S. was a great experience. He is professional, reliable, and highly skilled in his field. Communication was always clear and timely, and he consistently delivered high-quality work on schedule. Mykola was proactive in solving problems and paid close attention to detail throughout the project. I would gladly work with him again and highly recommend him to anyone looking for a dependable and talented professional.

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Cagr B.

5.0

₹1,050 INR

1 month ago

AMP URL Değişmeme Sorunu

They took care of my order and delivered it without any issues; they gave me confidence by saying they would be there for me if I encountered any problems.

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Experience

Full-Stack Developer | MVP & AI Solutions

Jan, 2023 - Present

3 years, 5 months

Self-Employed(Freelancer on https://www.toptal.com/)

Jan, 2023 - Present

3 years, 5 months

I work as a freelance full-stack developer helping startups and individuals build MVPs and web applications. I specialize in: -Building full-stack applications using React, Node.js, and MySQL -Developing AI-powered features such as chatbots and recommendation systems -Creating fast and scalable MVPs for early-stage startups Projects include: -AI-based food ordering system with smart recommendations -Custom dashboards and web applications with authentication

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Sosnowiec, Poland

Jan, 2023 - Present

3 years, 5 months

Startup MVP Developer

Jan, 2024 - Apr, 2024

2 months, 30 days

Independent Work

Jan, 2024 - Apr, 2024

2 months, 30 days

Built and tested MVP web applications for startup ideas, focusing on rapid development and usability. Responsibilities: -Designing frontend interfaces using React -Building backend APIs with Node.js -Implementing authentication and database systems Delivered working prototypes that helped validate business ideas quickly.

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Sosnowiec, Poland

Jan, 2024 - Apr, 2024

2 months, 30 days

AI Web Application Developer

Aug, 2023 - Dec, 2023

4 months

Independent Project

Aug, 2023 - Dec, 2023

4 months

Developed an AI-powered food ordering system that suggests items based on user preferences and past behavior. Key features: -Smart recommendation system -Menu management system -Order tracking functionality Technologies used: -React(TypeScript) -Node.js & Express -MySQL The project focused on improving user experience and automating food selection.

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Sosnowiec, Poland

Aug, 2023 - Dec, 2023

4 months

Education

Uniwersytet Gdanski

2019 - 2023

4 years

Bachelor’s Degree in Computer Science

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Poland

2019 - 2023

4 years

Qualifications

Advanced JavaScript Development

2022

Self-Learning

Developed strong understanding of modern JavaScript (ES6+), asynchronous programming, and API integration through hands-on projects.

2022

Full-Stack Project Development

2024

Independent Work

Designed and developed full-stack applications using React, Node.js, and MySQL. Delivered working MVPs and scalable web applications with authentication and dashboards.

2024

AI Application Development

2024

Self-Learning & Practical Projects

Focused on building AI-powered features such as chatbots and recommendation systems. Applied AI in real-world projects including a food ordering system with smart suggestions.

2024

Certifications

P

Preferred Freelancer Program SLA

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