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Leo
Arnold

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13
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Work experience

Anedot
February 2021 – January 2023
Job title
Senior JS | React | Rust | Solana Developer
Work experience & achievements
Designed and programmed a load-balancing backend for handling SQL requests. Used Tokio asynchronous runtime. Co-authored heterogeneous, asynchronous, distributed, realtime backend system coordinated with HTTP and message queues. Built Front-End from scratch React/Typescript with provided Figma Reduced the time spent on development by 53% with creating maintainable and reusable components. Developed Solana-Rust for lending contract which is deployed onto test net & dev net. Improved transaction execution environment to add functionality that enables validators to earn fees when they process transactions. Rewrote large majority of backend system leading to over 3 times more throught put on one third of the servers Reviewed & Tested deployed smart contract on Docker
Alamarka
February 2020 – January 2021
Job title
Junior TS | GO | React | Blockchain Developer
Work experience & achievements
Collaborated closely with graphic designers to create beautiful, functional, and fast interfaces. Worked on heavy test-cases for smart contract and audit codebase. Introduced gRPC, Docker, Kubernetes, Golang Backend for providing endpoints real time data feeding service. Developed P2E Gaming model NFT-staking Contract and deploy it onto Polygon network. Staking smart contracts with rewards token and integrated Front-End React with back- end using web3. Built high-performance customer facing user interface using ReactJS, Redux- saga, Hook, Tailwind CSS.
Blinksale
May 2016 – December 2019
Job title
JS | Rust | Go | Web3 Developer
Work experience & achievements
Currently working on building a bridge between substrate and cosmos chain using rust and go. Improved transaction execution environment to add functionality that enables validators to earn fees when they process transactions. Demonstrated a security attack on the consensus algorithm using a testing framework. Implemented custom tendermint reactor, which allows a developer to write managed distributed oracle. Reduced the responding time on introducing eliminating unessential Web3 calls and resolving the scalability with introducing the Layer 2. Worked on Agile Development system and accomplished CI/CD with git actions. Developed Arbitrum and Optimism Layer 2 ( Rolls-Up) smart contract and optimize the responding time when switching network. Introduced VueX for optimization and improve the performance. Used middleware in application to retrieve data from Back-End and to also perform RESTFUL services. Developed custom hashicorp vault plugins for secure private key storage, allowing non- c

Education

Osaka University
Graduation year: 2016
Level of study
Bachelor
Major / Field of study
Software Engineering