Rust, Mutex, B-Tree Map, WebSocket, Tokio, TypeScript, REST APIs, Vue.js

He has 4 years of experience primarily in Back-End, Front-End, and Full Stack development, and a year of experience in Rust Development. In one of his personal projects, he achieved an impressive 170 nanoseconds execution latency in a project by focusing on minimizing concurrency bottlenecks. He initially used standard Mutex locking, which resulted in unacceptable bottlenecks and low throughput and successfully switched to a message passing paradigm using the Crossbeam library to eliminate locking and achieve higher throughput. To efficiently manage price levels and order matching (like quickly finding the best price), he used a B-Tree Map. The B-Tree Map maintains sorted data, ensuring that the best price is always readily available at the beginning or end of the map. In his real-time crypto data aggregator project, he used Tokio (asynchronous runtime) and Crossbeam to handle high-throughput WebSocket data ingestion while ensuring data consistency and managing back pressure by implementing a bounded channel (100 bound) in Tokio for the sender and receiver. A bounded channel limits the number of messages that can be queued, naturally slowing the producer if the consumer falls behind. To prevent the data processing speed from falling behind the ingestion rate, he prioritized making the consumer logic as efficient as possible. His goal was to ensure the consumer could process data faster than the ingestion rate (throughput), thus avoiding queue buildup.

2.       What skill(s) / experience would you self-describe as strongest or specialist in?

Strongest skills would be TypeScript, indicating years of professional experience in typed web application development (across both front-end and back-end environments). He possesses experience in smart contract development using Solidity, positioning him for roles involving blockchain and decentralized application development. Moreover, he has a foundational understanding and practice in Rust, noting that while he lacks professional experience, he has dedicated self-learning time to it, supporting his earlier discussion on low-latency systems.

3.       Do you have the lists of key criteria’s according to the clients’ requirements?

He has 4 years of experience primarily in Back-End, Front-End, and Full Stack development, and a year of experience in Rust Development. He built a High-Performance Orderbook in Rust achieving 170ns execution latency and used a message-passing concurrency model with crossbeam channels for lock-free performance. He also built a Real-Time Crypto Data Aggregator using tokio and crossbeam to decouple network I/O. Additionally, he  connects to a live Binance WebSocket feed and has extensive experience building REST APIs using Go and TypeScript. And has full-stack experience (Vue.js, React, Next.js ), backend/microservices experience , and database experience (PostgreSQL, Redis, MySQL )