Product: Horizonte – an internal web framework, which powers Amazon.com, Whole Foods, Kindle Store, IMDb, and more than 1,700 other experiences owned by Amazon.

• Collaborated with partner teams to integrate and roll out new framework features and improvements. Brought ARM architecture support to the framework as an alternative to x86, which allowed 30–60% more cost efficiency.

• Performed on-call duty and responded to incidents. Worked with the Security department to assess security issues, developed and executed vulnerability remediation plans.

• Improved the reliability of the CI/CD infrastructure. In particular, eliminated intermittent integration test failures, which resulted in 20–30% faster code delivery and reduced operational overhead.

Product: Hiring Service that Amazon uses to hire tens of thousands people daily.

• Made the Hiring Service architecture design approved by Security department. Designed and implemented the key components of the service related to the API, database persistence, and job scheduling.

• Executed the managed launch of the new service, which initially took over 25% of the total Amazon hiring volume from the legacy system.

• Mentored other engineers and helped their career advancement.

Product: a set of tools that provide and visualize blockchain and market data of Bitcoin and cryptocurrencies. The data is gathered from multiple sources: self-hosted blockchain nodes, APIs of centralized exchanges, and other third-parties such as FRED (Federal Reserve Economic Data); aggregated and converted into metrics using data science methods; and sold to major financial institutions, such as Fidelity.

• Created dynamic price charts for assets and index pages that showcase on-chain and market data collected by the research team, made enhancements to the data visualization tools.

• Implemented and maintained RESTful API proxy services that collect, post-process, and cache data from the primary API and external APIs, and provide it to the web and mobile applications.

Product: Bitfinex website and the mobile app.

• Created and launched a new cross-platform Bitfinex mobile application on Google Play and Apple Store, which complements the web version and facilitates trading on the go.

• Introduced a shared library of reusable functions and components to improve interoperability between two sister teams.

• Implemented logic behind a ticker list – interactive widget featured on the landing page of Bitfinex.com.