Konstantin Shkut, Developer in New York, NY, United States
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Konstantin Shkut

Verified Expert  in Engineering

Full-stack Developer

New York, NY, United States

Toptal member since July 3, 2020

Bio

Konstantin is a visionary full-stack Web3 engineer and tech lead with over a decade of experience crafting innovative solutions in decentralized systems, AI, and scalable platforms. Renowned for transforming bold ideas into high-impact products, he’s led teams to deliver secure DeFi platforms with $500+ million in transactions and award-winning hackathon projects. Passionate about innovation, Konstantin drives results that redefine excellence, making him a key asset to forward-thinking teams.

Portfolio

Meromai
Typescripts, Solidity, Node.js, GraphQL, MySQL, React, Vite, Wagmi, Foundry...
StrongBlock
MySQL, Firebase, JavaScript, TypeScript, Node.js, Cryptocurrency, Next.js...
ScaleLab
MySQL, Laravel, PHP, JavaScript, TypeScript, React, Node.js, CSS, HTML...

Experience

  • Full-stack Development - 15 years
  • React - 7 years
  • TypeScript - 7 years
  • Node.js - 7 years
  • Next.js - 7 years
  • Blockchain - 5 years
  • Cryptocurrency - 4 years
  • React Native - 4 years

Availability

Part-time

Preferred Environment

Zoom, Slack, Visual Studio Code (VS Code), IntelliJ IDEA, MacOS, Startups

The most amazing...

...moment was launching a DeFi dApp at StrongBlock, securing $500+ million in user funds with zero vulnerabilities, proving my knack for secure Web3 solutions.

Work Experience

Lead Full-stack Developer

2023 - 2025
Meromai
  • Led a high-performing remote engineering team, fostering collaboration to deliver a Web3 platform for AI training data creation and curation, achieving over 99% uptime and seamless user onboarding.
  • Architected and deployed a Python-based back end for a chat UI, integrating multiple LLMs with a 99.9% success rate for real-time interactions.
  • Designed an autonomous AI agent to streamline admin workflows, reducing manual tasks by 80%.
  • Developed a Telegram mini app in just two weeks, driving 100,000+ user interactions within the first month.
Technologies: Typescripts, Solidity, Node.js, GraphQL, MySQL, React, Vite, Wagmi, Foundry, Hardhat, Large Language Models (LLMs), Ollama, Data Analytics, Startups, Architecture, Kubernetes, Docker, Back-end, Front-end, User Interface (UI), User Experience (UX), Artificial Intelligence (AI), Svelte, SvelteKit, PostgreSQL, NestJS, Redis, Web3, Ethereum, Ethereum Virtual Machine (EVM), Express.js, Full-stack Development, Tailwind CSS, Software Architecture, Prisma, Cloudflare, API Integration, Solution Architecture, Cloud Architecture, Data Modeling, Amazon Web Services (AWS), Google Cloud Platform (GCP), AI Content Creation, Stable Diffusion, Text to Image, Web Development, Python, MacOS, REST APIs, Zoom, Slack, Visual Studio Code (VS Code), IntelliJ IDEA, OAuth, Design, Leadership, Agile Software Development, SQL, Git, GitHub, FastAPI, Prompt Engineering, Terraform, CSS3, HTML5, JSON, SSG, Server-side Rendering (SSR), Microservices, APIs, ChatGPT, Vercel, CI/CD Pipelines, DevOps, Technical Leadership, Security, OpenAI, Cursor AI, Database Architecture

Lead Full-stack Developer

2019 - 2023
StrongBlock
  • Designed and implemented secure smart contract architectures, achieving zero critical vulnerabilities over 4+ years (audited by top firms).
  • Led the development of a user-friendly dApp, processing 4+ million transactions with $500+ million in user activity.
  • Built an NFT Dutch auction dApp, selling 1,570 NFTs on Ethereum Mainnet, generating $6+ million in revenue.
  • Prototyped a cross-chain bridge with audited multi-signature contracts, enabling secure asset transfers across three blockchains.
  • Mentored a team of five engineers, upskilling a junior developer to Solidity proficiency in six months.
Technologies: MySQL, Firebase, JavaScript, TypeScript, Node.js, Cryptocurrency, Next.js, Solidity, Smart Contracts, Web3, Wagmi, Viem, Data Analytics, Startups, Payment APIs, Architecture, Kubernetes, Docker, Back-end, Front-end, User Interface (UI), User Experience (UX), PostgreSQL, Redis, Ethereum, Ethereum Virtual Machine (EVM), Express.js, GraphQL, Full-stack Development, Software Architecture, Prisma, Cloudflare, API Integration, Solution Architecture, Cloud Architecture, Data Modeling, Amazon Web Services (AWS), Google Cloud Platform (GCP), Web Development, Mobile Development, MacOS, Vue, Sass, REST APIs, Jest, Zoom, Slack, Visual Studio Code (VS Code), IntelliJ IDEA, Design, Leadership, Agile Software Development, SQL, Git, GitHub, Fintech, Digital Payments, Stripe API, CSS3, HTML5, JSON, SSG, Server-side Rendering (SSR), Microservices, APIs, Tailwind CSS, Vercel, CI/CD Pipelines, DevOps, Technical Leadership, Security, Mobile, Database Architecture

CTO

2016 - 2020
ScaleLab
  • Developed a full-stack platform from scratch, supporting major MCNs like Univision and handling 1+ million monthly active users.
  • Increased conversions by 80% through data-driven A/B testing, achieving a 14% signup rate and boosting revenue by $5 million annually.
  • Architected a payment system processing $10+ million in monthly payouts with 100% accuracy.
  • Led a 5-engineer team using Scrum, delivering Node.js and React projects on time and under budget.
Technologies: MySQL, Laravel, PHP, JavaScript, TypeScript, React, Node.js, CSS, HTML, Back-end Development, Bootstrap, Data Analytics, Next.js, Full-stack, Startups, Payment APIs, Architecture, CTO, Fractional CTO, Back-end, Front-end, User Interface (UI), User Experience (UX), Redis, Socket.IO, Express.js, Full-stack Development, Software Architecture, Cloudflare, API Integration, Solution Architecture, Cloud Architecture, Data Modeling, Data Pipelines, Amazon Web Services (AWS), Google Cloud Platform (GCP), Web Development, Python, Data Scraping, MacOS, Redux, Sass, REST APIs, Jest, Slack, Visual Studio Code (VS Code), IntelliJ IDEA, Integration, OAuth, Design, Leadership, Agile Software Development, SQL, AWS Lambda, Git, GitHub, Digital Payments, Stripe API, CSS3, HTML5, JSON, APIs, CI/CD Pipelines, DevOps, Technical Leadership, Security, Twilio, SMS, Mobile, Material UI, Database Architecture

Full-stack Software Engineer

2009 - 2015
Moreman
  • Developed a high-performance online store, achieving 99.9% uptime and $3+ million in annual sales.
  • Integrated 1C CRM/inventory system, reducing order processing time by 60%.
  • Created APIs for resellers, enabling seamless third-party integrations and expanding market reach by 33%.
Technologies: MySQL, Laravel, PHP, CSS, JavaScript, HTML, Back-end Development, Full-stack, Data Analytics, Back-end, Front-end, Full-stack Development, Software Architecture, Web Development, MacOS, REST APIs, Commerce, Integration, eCommerce, SQL, Git, CSS3, HTML5, JSON, Database Architecture

Full-stack Software Engineer

2008 - 2009
EMS Post
  • Built a high-traffic website, handling 1+ million monthly visits with 99.9% uptime.
  • Developed API web services, enabling integrations with 50+ third-party platforms and driving 20% partner growth.
  • Optimized database performance by redesigning MySQL queries and indexing, reducing page load times by 40%, and improving user experience.
Technologies: MySQL, Drupal, PHP, CSS, JavaScript, HTML, Back-end Development, Full-stack, Data Analytics, Back-end, Front-end, Full-stack Development, Web Development, MacOS, REST APIs, Commerce, Integration, eCommerce, SQL, CSS3, HTML5

Experience

PawNFT — Radix Hackathon Winner

https://github.com/kschrute/radix.pawnft
A decentralized NFT lending platform. PawNFT operates as a decentralized, peer-to-peer platform, allowing NFT owners to leverage their assets for liquidity without selling them. I designed, built, and deployed Scrypto (Rust-based) smart contracts and UI in two days.

Radix blog post:
• https://www.radixdlt.com/blog/from-ebc-to-radix-pawnft

upay. — PayString Hackathon Winner

https://devpost.com/software/u-pay
I created a universal payment page that allows people to get paid for their services from anyone, anywhere in the world. I designed and built a web app, a back end, and an API server within two weeks. I was one of the hackathon winners.

Nerdic — Mobile App for YouTube Creators

I designed and built a personalized YouTube channel growth suggestions iOS app, including its UX and technical architecture. It had 2,000+ users, 200,000+ suggestions, and 97% positive feedback. It was built using React Native, Laravel, and MySQL.

Education

2001 - 2003

Coursework in Electronics and Automation

Moscow State Institute of Radio Engineering - Moscow, Russia

Skills

Libraries/APIs

Node.js, React, REST APIs, Vue, Socket.IO, Stripe API, Wagmi

Tools

Git, GitHub, IntelliJ IDEA, Slack, Zoom, Prisma, Terraform, ChatGPT

Languages

TypeScript, JavaScript, PHP, HTML, CSS, Python, SQL, CSS3, HTML5, Sass, Solidity, GraphQL, Rust

Frameworks

Laravel, React Native, Next.js, Express.js, Tailwind CSS, Redux, Jest, Bootstrap, Svelte, NestJS, Material UI, Hardhat

Paradigms

Mobile Development, Gamification, Agile Software Development, Microservices, DevOps

Platforms

MacOS, Visual Studio Code (VS Code), Android, iOS, Firebase, Docker, Kubernetes, Blockchain, Ethereum, DigitalOcean, Amazon Web Services (AWS), Google Cloud Platform (GCP), AWS Lambda, Vercel, Twilio, Mobile, Drupal, Ollama

Storage

PostgreSQL, Redis, JSON, MySQL, Data Pipelines, Database Architecture

Other

APIs, Front-end, Back-end, Back-end Development, Full-stack, Startups, Architecture, CTO, Fractional CTO, Full-stack Development, Software Architecture, Web Development, Fintech, User Experience (UX), User Interface (UI), Cryptocurrency, Web3, Data Analytics, Large Language Models (LLMs), Payment APIs, Artificial Intelligence (AI), Ethereum Virtual Machine (EVM), Cloudflare, API Integration, Solution Architecture, Cloud Architecture, Data Modeling, AI Content Creation, Stable Diffusion, Text to Image, Data Scraping, Commerce, Integration, OAuth, eCommerce, Design, Leadership, FastAPI, Prompt Engineering, Digital Payments, SSG, Server-side Rendering (SSR), CI/CD Pipelines, Technical Leadership, Security, SMS, OpenAI, Cursor AI, Smart Contracts, Viem, Typescripts, Vite, Foundry, SvelteKit, Computer Science, Programming

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