Roman Khrystynych

Roman Khrystynych

Software Engineer building scalable solutions in Toronto

About

I'm a software developer with over 10 years of experience creating web and mobile apps. I specialize in building scalable systems using tools like React, Angular, and Node.js. As the founder of CryptoRabbit, I created a blockchain-powered marketplace that uses AI and smart contracts for secure trading.

I'm passionate about solving problems with technology, whether it's improving user experiences, developing AI tools, or leading teams to deliver great software. Let's create something amazing together!

Recent Projects

Appointment Prep AI screenshot

Appointment Prep AI

2024

Created an advanced multi-agent system to help users prepare for professional appointments by analyzing context and generating tailored discussion points.

Contract project in conjunction with Hint Services

  • Designed conversational AI system for appointment context analysis
  • Implemented audio transcription and analysis pipeline
  • Created dynamic question generation system based on appointment type
  • Built secure data handling system for sensitive medical information
AI/MLMulti-agent SystemsNext.jsVercel
Pet Portal AI screenshot

Pet Portal AI

2024

Developed features for an AI-powered platform for pet owners, such as subscription management, personalized pet food recommendations, and multi-agent systems for veterinary and insurance support.

Contract project in conjunction with Hint Services

  • Built a React-based frontend features with Tailwind CSS for responsive design
  • Implemented subscription management system with Stripe integration
  • Developed multi-agent system for personalized pet care recommendations
  • Created automated meal planning system based on pet profiles
AI/MLStripeMulti-agent SystemsNext.jsPostgresVercel
CryptoRabbit screenshot

CryptoRabbit

2023-Present

Founded and developed a crypto-first marketplace enabling secure peer-to-peer trading of digital currencies for goods using smart contracts and AI-driven dispute resolution.

  • Architected full-stack application using React Native and Next.js
  • Implemented escrow smart contracts for secure transactions
  • Developed AI-powered dispute resolution system
  • Built GraphQL API with Apollo Server and Prisma ORM
  • Deployed scalable serverless infrastructure using AWS CDK
React NativeNext.jsBlockchainSolidity Smart ContractsApollo GraphQLAWS CDK

Latest Posts

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Blog Post

What I Learned Building Agents for Multi-Agent Systems

Building multi-agent systems teaches the value of balancing complexity with efficiency. Simplicity, effective use of natural language, and clear examples are key to unlocking their full potential. This article shares practical lessons and highlights the role of natural language and examples in guiding agents effectively.

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Blog Post

AI + AWS CDK: Simplifying Infrastructure Management

Infrastructure management used to be complex and time-consuming, often requiring deep technical knowledge and hours of troubleshooting. With AI, it’s now much easier and faster. This article outlines a three-step process for leveraging AI in infrastructure: setting up resources, debugging with AI digests, and iterating for optimization. This approach has made managing infrastructure more accessible, empowering more people to build efficiently and focus on strategic goals.

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