Rastislav Kisel Email & Phone Number

London, GB

London, England, United Kingdom

• When I started, my focus was on building a storage layer for our custom ML feature store. Then I was a core engineer on the data integration platform team. I led the design, implementation, and migration to a new.
• Cross-company cost optimizations: Spearheaded code optimization initiatives that reduced AWSoperational costs by millions of $ annually through strategic refactoring and infrastructure improvements.
• Email Integration with AWS: Led the company-wide initiative to standardize our email-relatedtechnologies, and subsequent implementation of a comprehensive platform solution for inbound andoutbound email.
• Data Ingestion Pipelines: Led the design and implementation of new data ingestion pipelines. Also spearheaded the migration of the old scheduling and ingestion processing to the new system. This layer handles 15k+.
• Feature implementation for ML models: Led the implementation of features for behavioral account takeover ML models. These features are the cornerstone of the logic for detecting account takeover attempts.
• ML feature store backend: Designed and implemented core storage layer for our custom ML features store. This storage layer currently handles 20k+ write and read requests per second. The features store is a foundational.

London, England, United Kingdom

• I was working on the business offering of Monzo. In that role, I led the full development lifecycle of several major features, including international payments for businesses and enabling the opening of multiple.
• International Payments for Businesses: Designed and executed the implementation of a business banking solution for international payments. As part of the project, I migrated several critical production database tables.

Prague, Czechia

I was working in a team on a new Mobile Device Management product in the cloud. I led the implementation of product and platform features, including the development of microservices (running in Kubernetes) dealing with the enrollment of mobile devices, integrating Istio service mesh into our cloud environment, and preparing and implementing Azure security.