KYO8.dev

KYO8_

KYO8 Backend Infrastructure Engineer

based in Tokyo.

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KERNEL v0.8.0

01. About

Kyoya

Centering around Go, TypeScript, and AWS, I am deepening my understanding of underlying technologies that support systems, such as Linux, networking, and distributed systems.

In the long term, I aim to connect this knowledge with my experience in blockchain development to contribute to core protocol and infrastructure development for distributed systems, including Ethereum.

// INFO

name: KYOYA

role: KYO8 Backend Infrastructure Engineer

location: Tokyo

focus: Go, AWS, Blockchain, Low-level Systems

>_

02. Skills

›All skills

Languages

  • •Go
  • •TypeScript
  • •Python
  • •SQL
  • •Solidity

Backend

  • •Go
  • •gRPC
  • •REST API
  • •GraphQL

Infrastructure

  • •AWS
  • •Terraform
  • •Docker
  • •GitHub Actions

Database

  • •DynamoDB
  • •PostgreSQL
  • •Redis
  • •S3

Blockchain

  • •Ethereum
  • •Solidity
  • •IPFS

Tools

  • •Git
  • •VS Code
  • •Linux
  • •Notion

03. Projects

›View all projects
01

Analytics Platform

Real-time analytics platform built with Go and AWS.

GoNext.jsAWSTerraform
02

On-chain NFT Minter

NFT minting platform on Ethereum with on-chain metadata.

SolidityNext.jsIPFSAWS
03

Microservices Platform

Scalable microservices architecture with Go, gRPC, and Docker.

GogRPCDockerAWS

04. Articles

›All articles

Jun 14, 2026 · kyo8.dev

Designing a single-table DynamoDB schema for a portfolio API

Access patterns first: how I modeled projects, skills, and careers in one DynamoDB table.

Read

Mar 2, 2026 · kyo8.dev

Go + Lambda cold starts: what actually moved the needle

Benchmarking binary size, init code, and provisioned concurrency on a real API.

Read

Dec 8, 2025 · Zenn

Notes on running stg / prd in separate AWS accounts

AWS Organizations, OIDC federation, and the small annoyances nobody warns you about.

Read

Sep 20, 2025 · Zenn

Talking Go and Ethereum tooling at a local meetup

Slides and a short recap from a talk on building developer tooling around Go and Ethereum.

Read

05. Career

  1. 2025

    Mar - Now

    Work

    Mercoin (Mercari)

    Backend Engineer Intern

    Working on the development of an NFT marketplace.

  2. 2024

    Jul - Aug

    Internship

    GMO Pepabo (SUZURI)

    Backend Engineer Intern

    Worked on API development for an online service.

  3. 2024

    Apr - Mar

    Education

    IAMAS (Media Art)

    M1 + M2 (withdrawal)

    Research on media expression and technology.

  4. 2021

    Apr - Mar

    Education

    The University of Aizu

    B.Sc. in Computer Engineering

    Studied distributed systems and formal methods.