Tatsunori Yoshida

Available to hire

Hi, I’m Artem Hyda, a senior full-stack and blockchain developer with seven years of experience building secure smart contracts and scalable backend systems.

About

Hi, I’m Artem Hyda, a senior full-stack and blockchain developer with seven years of experience building secure smart contracts and scalable backend systems.

I’ve earned the trust of clients and stakeholders by driving strategic research, large-scale data processing, and blockchain platform enhancements, including work with Google and Korn Ferry. I’m passionate about integrating blockchain solutions with existing systems to deliver a seamless user experience and improved operational efficiency.

  • Joined January 2026

Languages

  • EnglishFluent
  • PolishFluent
  • JapaneseIntermediate
  • RussianIntermediate

Industry experience

  • Software & Internet
  • Professional Services
  • Media & Entertainment
  • Gaming
  • Education
  • Other

Projects · 1

Participated in development of Axiom Pro.
Integrated web3, Solana smart contract, meme token trading, several external APIs.

  • Blockchain Developer

Work experience· 10 roles

Solana Technical Lead (Part-time) · HelloMoon Inc.May 2024 – Present · 2 yrs 7 mos

Led the development of the Solana Yellowstone Geyserstream plugin and managed a network of over 100 ultra-fast private Solana validator nodes. Designed and maintained highly reliable gRPC and Laserstream systems serving thousands of professional traders and users worldwide. Delivered scalable backend solutions, including the Hellomoon Shredstream proxy, staking lending service (MS Lending Service), and an RPC + webhook system for real-time Solana trade subscriptions. Oversaw the asynchronous server and Kubernetes backend teams, ensuring sub-50 millisecond latency and reliable uptime.

Solana Technical Lead (Part-time) · Hellomoon IncMay 2024 – Present · 2 yrs 7 mos

Led the development of the Solana Yellowstone Geyserstream plugin and managed a network of over 100 ultra-fast private Solana validator nodes. Designed and maintained highly reliable gRPC and Laserstream systems, serving thousands of professional traders and users worldwide. Delivered scalable backend solutions, including the Hellomoon Shredstream proxy, staking lending service, and an RPC + webhook system for real-time Solana trade subscriptions. Oversaw the asynchronous server and Kubernetes backend teams, ensuring sub-50 millisecond latency and reliable uptime. Users subscribed to Solana trades with approximately 13 milliseconds of latency and could trade quickly on a smooth and reliable service.

Talent Engineer (Part-time) · Korn Ferry (Remote)Apr 2023 – May 2024 · 1 yr 2 mos

Responsible for technical surveys and strategic research on the AI and blockchain software markets in Japan and Poland. Analyzed Japan's AI sector, valued at approximately $15.2 billion in 2025, with high growth driven by robotics, automation, and generative AI adoption. Explored Poland’s growing AI ecosystem marked by surging startup investments and expanding blockchain adoption within its digital transformation context. These insights supported Korn Ferry’s talent acquisition and future market strategy development in both regions.

Talent Engineer (Part-time) · Korn FerryApr 2023 – May 2024 · 1 yr 2 mos
Google API Developer (Internship) · Google (Remote)Aug 2019 – Jul 2021 · 2 yrs
Full-Stack & Blockchain Developer · Self-EmployedAug 2019 – Jul 2021 · 2 yrs
Google API Developer (Intern) · GoogleAug 2019 – Jul 2021 · 2 yrs
Full-Stack Developer (Internship) · Potenergy (Katowice, Poland)Nov 2018 – Aug 2019 · 10 mos

Education

Master of Computer Science · Warsaw University Of Technology2015 – 2019
Bachelor of Computer Science · Polish- Japanese Academy of Information Technology2012 – 2015
Master of Computer Science · Warsaw University Of Technology2015 – 2019
Bachelor of Computer Science · Polish-Japanese Academy of Information Technology2012 – 2015

Certifications and awards· 6

Certified Senior Solidity Developer2022 – 2026
Certified Cryptocurrency Auditor2022 – 2026
Solana Developer2023 – 2026
Certified Senior Solidity Developer2022 – 2026

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