Alexander – Rust, Solana, Blockchain

It's a company that develops a network of fully customizable, EVM-compatible Virtual Chains on NEAR.

• Replaced JetStream-based block streaming with a company-owned Blocks API.
• Added a new blockchain indexer using the NEAR Lake Framework.
• Developed a shared observability library leveraging Prometheus metrics.
• Ensured compatibility with new NEAR protocol versions and coordinated testnet/mainnet releases.
• Implemented a POC block validator verifying NEAR blocks and chunks via authoritative node storage hashes.
• Automated PR-based version bumps across multiple repositories to streamline nearcore upgrades.
• Fixed and optimized NEAR block refiner logic and performance in open-source Rust crates used for standalone Aurora infrastructure and production indexing workflows.

It's a cross-chain earnings tracking tool.

• Developed back-end services in Rust for real-time tracking of staking rewards.
• Implemented historical data processing for staking rewards on Ethereum and Solana.

It’s a decentralized protocol that lets users trade spot assets with leverage on DEXes while keeping full control of their funds.

• Implemented a Rust-based system called Keepers to monitor and manage the state of smart contracts on Polygon.
• Built functionality to automatically trigger liquidations and manage limit, stop-loss, and take-profit orders to protect lenders’ funds.

It's a Rust SDK for Android and iOS.

• Built asynchronous socket APIs in Rust for Android integration using Kotlin.
• Integrated Rust libraries into Android projects through a private Maven registry.
• Configured GitLab CI pipelines for automated mobile SDK packaging and distribution.

It's an interactive dataset viewer and real-time query tool.

• Built table and query processing logic for a real-time data stream database.
• Implemented TypeScript and QML APIs enabling users to connect to multiple streams, query data, and view results interactively.
• Maintained a Rust-based serialization and deserialization layer (AST to native Qt models) using Serde and qmetaobject.
• Developed a custom QML UI control library to enhance interface usability and functionality.