Open to opportunities

Tomas Yamamoto

@tomasyamamoto

Message

Senior Full-Stack and Blockchain Developer driving scalable web, AI and blockchain solutions.

United States

Message

What I'm looking for

I seek senior roles building scalable web and blockchain products with strong engineering teams, emphasis on ML integration, DevOps automation, and opportunities to mentor and drive open-source contributions.

I am a Senior Full-Stack and Blockchain Developer with 8+ years building scalable web, AI-driven, and blockchain platforms. I have delivered performance and cost improvements—integrating ML models, optimizing smart contracts, and deploying decentralized systems that cut fees and accelerate transaction speeds.

My experience spans frontend and backend frameworks, cloud and DevOps, and multiple blockchain ecosystems where I led NFT marketplaces, token designs, and platform integrations while mentoring junior engineers and contributing to open-source projects.

Experience

Work history, roles, and key accomplishments

Current

Senior Blockchain Engineer

Current

Iyrix Technologies

Oct 2024 - Present (1 year)

Integrated an ML algorithm that improved cost estimation accuracy by 15% and collaborated with product and development teams to increase platform efficiency by 25%. Developed client DApp and admin site, deployed on AWS and launched a BSC token with on-chain voting and 2% marketplace rewards.

Solidity Next.js AWS Smart Contracts Web3.js Docker Consensus Algorithms dApps

Blockchain Engineer

Amazon

Jul 2023 - Sep 2024 (1 year 2 months)

Donated to development and integration of three tools and automated blockchain deployment pipelines with Docker and Kubernetes, reducing release cycles by 40% and integrating blockchain tooling across the platform.

Docker Kubernetes CI CD Blockchain Deployment Web3.js Automation)

Senior Full Stack Engineer

Altice USA

Mar 2021 - Jun 2023 (2 years 3 months)

Implemented SSR with React to reduce initial page load times by 60% and built CI/CD pipelines that reduced deployment failures by 70%; introduced RAG architecture to speed documentation search and cut support response time by 40%.

React AWS CI CD PostgreSQL Redis DevOps

Full Stack Developer

ClassDojo

Jan 2019 - Feb 2021 (2 years 1 month)

Maintained scalable web applications with Next.js and Node.js, optimized frontend/back-end performance to improve load times and designed RESTful APIs while deploying services on AWS for reliability and scalability.

Next.js Node Express PostgreSQL MongoDB AWS RESTful APIs Cypress

Freelance Full Stack Developer

Upwork

May 2017 - Dec 2018 (1 year 7 months)

Delivered interactive responsive UI components and full-stack solutions using React and Node.js, gaining broad experience in Agile workflows and improving client engagement across projects.