Eleanora Xiaodong

Select me!

Eleanora is available for hire

Hire Now

Eleanora Xiaodong

Gender

Male

Address

China

Language

English - Advanced

Main expertise

Blockchain Ethereum Web3.js Solidity AWS Azure Rust TypeScript Docker Kubernetes Redis MongoDB

Introduction

Eleanora Xiaodong is a seasoned software developer with over 9 years of industry experience, including 6 years specializing in blockchain technology. Throughout her career, she has successfully led and contributed to numerous high-impact projects across various domains. Her expertise includes the development of smart contracts on platforms like Ethereum and Solana, as well as the creation of complex trading systems and arbitrage bots. Eleanora possesses technical proficiency in a wide range of programming languages, including Rust, TypeScript, Python, and Solidity. Her deep knowledge of TypeScript has enabled her to develop robust and maintainable applications, while her experience with Web3.js has been crucial in facilitating seamless interactions with decentralized applications and smart contracts. Eleanora's diverse skill set allows her to approach problem-solving from multiple perspectives, delivering optimized solutions tailored to client needs. She also has extensive experience with databases such as MongoDB and MySQL, ensuring efficient data management and retrieval, and is well-versed in cloud services, having deployed and managed applications on platforms like AWS and Azure. Her familiarity with containerization tools like Docker and orchestration with Kubernetes has equipped her to build scalable and resilient applications in dynamic environments. In addition to her technical skills, Eleanora is fluent in both English and Chinese, enhancing her ability to collaborate with international teams and communicate effectively with stakeholders from diverse backgrounds. She has a passion for innovation and continuous learning and is always seeking opportunities to expand her knowledge in the evolving fields of blockchain and software development. Eleanora's commitment to delivering high-quality solutions, combined with her ability to adapt to new challenges, makes her a valuable asset to any development team. She is eager to contribute her skills and experience to exciting projects that leverage blockchain technology to drive real-world impact.

Project list

Solana Jito Relayer Mempool Recovery

2023 - 2024

Developed a solution to recover the mempool for Jito Relayer, enabling the execution of frontrun strategies.

Forged Jito's code repository and customized it to read more slots as a leader and transfer the transaction to the client via WebSocket. Built a client capable of receiving bytes from the Jito relayer. Deployed the relayer to an AWS server and configured it to run as a service by establishing the entire environment.

Technologies: Rust, Anchor, MongoDB, WebSocket, AWS

Solana Market Maker Smart Contract

Developed a smart contract for the Solana blockchain enabling functionalities like creating liquidity pools and executing swaps.

Monitor the price of trading pairs and perform high-frequency automated swaps. Build a frontend using TypeScript to interact with the contract. Execute swap transactions using the contract's swapExactInput method.

Technologies: Typescript, Web3.js, Node.js, React.js, Rust Anchor, MongoDB, Redis

Solana AMM Arbitrage Bot

Designed and developed an arbitrage bot to take advantage of price discrepancies across various Automated Market Makers (AMMs) on the Solana blockchain to generate profit.

Get real-time pair information from Dexscreen using its API. Analyze the WSOL arbitrage path and compute the input and output amounts with each AMM's SDK. Build a Rust Anchor contract to send different parameters to each AMM's program and return the final payload. Build swap transactions using the TypeScript SDK, and transfer the contract's results to the Jito relayer.

Technologies: TypeScript, Web3.js, Rust, Anchor, MongoDB, Redis

Ethereum Uniswap V2/V3 Arbitrage Trading Bot

2017 - 2023

Developed a bot that capitalizes on price discrepancies between Ethereum Uniswap V2 and V3. The bot executes profit-generating trades using WETH and incorporates expertise with tools such as Hardhat, Truffle, and Remix.

- Set up Ethereum nodes using Teku and Nethermind with Docker. - Retrieved pool and pair information using the PairCreated event logs, processed by goroutines, and saved these to MongoDB. - Registered a websocket with eth_subscribe to synchronize block events for updating pool, price, and pair data in MongoDB, while parsing JSON messages using json-iterator. - Calculated arbitrage profits and gas fees using the AMM formula; transactions were then sent to flashbot. - Developed a Solidity smart contract to execute transaction payloads using the 'call' method.

Technologies: Python, Solidity, Web3.py, Browine, MongoDB, Docker

Cryptocurrency Trading Platform

This project aimed to develop an inclusive and innovative platform for cryptocurrency enthusiasts featuring an online wallet and a comprehensive trading hub to meet the diverse needs of its users.

Responsible for order module development. The controller processes various validators including price, scale, amount, and member wallet verifications. The system identifies the coin unit based on member ID, checks the balance, and freezes it. Orders are sent to the exchange engine module via Kafka. Responsible for developing the exchange core module. Created individual matchmakers, known as cointraders, for each coin. Implemented both market and limit price synchronization to identify optimal matches. Updated order details and trading plate information. Recorded K line data, including open price, highest price, lowest price, and close price. Developed the wallet RPC system. Implemented Ethereum-related functions using the web3j library, including wallet file generation, balance updates, transaction creation, and raw transaction sending.

Technologies: Java, Kafka, Spring Cloud, Spring Boot, MySQL, Web3.js

Ethereum Blockchain Wallet Project

A blockchain-based wallet project featuring three core services: deposit, collection, and withdrawal. Currently supports multiple API calls, with RPC implemented.

- Built a full Ethereum node using Teku and Nethermind in a Docker environment. - Sent HTTP requests directly to the Ethereum node and unmarshalled the JSON response to obtain results. - Managed the deposit service, which includes generating new addresses (personal_newAccount), retrieving the current block height (eth_blockNumber), obtaining transaction information (eth_getBlockByNumber), and saving this data to MySQL. - Developed the withdrawal module, which involves checking request parameters, verifying duplicates and amounts, and processing address information. This request is then transferred to the channel, after which a separate routine monitors and processes the transfer transactions to execute them (eth_sendTransaction).

Technologies: Golang, Docker, Solidity, MySQL, Redis

Algorithmic Trading System Development

2016 - 2017

Utilizing my real-world trading experience, I deliver a comprehensive end-to-end solution that includes not only the source code for a trading bot platform but also effective trading strategies for both high-frequency and low-frequency contexts. I conduct an in-depth analysis of high-frequency data and the market dynamics of the stock market. My approach involves developing T0 factors based on various data insights, like snapshot data, transaction data, and commission data, to enhance real trading scenarios. The factors are derived from multiple sources, including academic papers, research reports, and direct data observations, with continuous adjustments for different market environments.

Build a concurrency Rust framework using Tokio multi-thread. Communicate using unbounded channels for different signals. Integrate Python prediction algorithms to obtain the next tick price. Utilize Serde JSON for parsing; enhance performance with the Parking Lot library.

Technologies: Rust, Tokio, Python, Serde js

Amway E-commerce Microservice Platform

2015 - 2016

Transform the existing business model into a microservice architecture. The middle layer connects to backend microservices such as CRM and the payment center, while the frontend system interacts with the e-commerce layer microservices. This transition enhances the overall robustness of the digital ecosystem.

Deploy the entire web system to Azure Cloud. Build REST API using Actix-web and deploy the backend to a Kubernetes pod in Azure. Utilize Redis for storing frequently accessed data. Design e-commerce promotion sales using Kafka. Implement Nginx for frontend load balancing.

Technologies: Azure, Rust, React.js, MySQL, Redis, Kafka, Nginx, Actix-web, Kubernetes

Project list

Education

Expertise

Certifications