Andrei Montchik

Staff Software Engineer | Distributed Systems | Backend Application Development | APIs, Data Feeds

Sun Prairie, Wisconsin, United States

About

I am a Software Engineer focused on distributed systems and real-time architectures. I design and build production services, APIs, and service-oriented systems for data-intensive applications and complex business workflows. My work spans high-availability distributed systems, event-driven architectures, and real-time data processing systems, with a focus on scalability, reliability, and production performance under heavy workloads, primarily in the financial domain. Recently, I have been working independently on real-time high-throughput cryptocurrency systems, strengthening my experience in end-to-end system design, implementation, and production ownership.

Experience

  • Independent DeFi Engineer at Full-time

    Researching and building automated execution systems for decentralized financial protocols on the Solana blockchain, with a focus on liquidators and keeper applications for lending and perpetual trading platforms, including Marginfi/Project 0, Jupiter Lend, Drift, and Kamino. Exploring the application of LLMs and agentic AI workflows to financial research, including identifying and analyzing price correlations between cryptocurrency and traditional asset markets.

  • Senior Software Engineer at Solana Labs

    Contributed to the early design and development of an experimental DeFi algorithmic trading system, implementing core functionality and data pipelines.

  • Consultant at Gemini

    Returned as a consultant to support the rollout and adoption of the trade execution system developed during my previous tenure, assisting with migration activities and ensuring a smooth transition from the legacy platform.

  • Senior Software Engineer at marginfi

    Contributed to the redesign and scaling of backend systems for the Marginfi lending platform in the Solana blockchain ecosystem. Work focused on improving risk monitoring, optimizing reward (bonus points) calculations, improving the liquidation process and enhancing the accuracy and reliability of price feeds.

  • Independent DeFi Engineer at Full-time

    Designed and developed a system for detecting and executing crypto token price arbitrage opportunities across Solana blockchain liquidity providers. The work involved building and optimizing data-driven logic for opportunity detection under latency and state consistency constraints in a multi-protocol environment.