Leonid Korogodski
Holland
Summary
Dynamic and innovative Principal Software Engineer with extensive experience designing and implementing low-latency, distributed systems at scale for processing large volumes of data. Proven track record of developing high-performance solutions using modern technologies. Expert in optimizing systems for scalability, speed, and reliability. Polyglot, fluent or conversant in a wide range of programming languages and technologies, easily acquiring new skills. A good eye for big-picture design. Passionate about mentoring teams and driving cutting-edge technical innovations for data-driven decision-making.
Overview
27
27
years of professional experience
Work History
Software Consultant
Chariot Solutions
05.2018 - Current
- Consultant @ Comcast: Designed and developed distributed systems using Clojure, Scala, and Java, with Akka Streams, Apache Kafka, and AWS services (S3, AppFlow, EventBridge) to process large-scale data in real time, ensuring low latency and high throughput
- Consultant @ IQVIA: Built scalable, high-performance data pipelines and analytics services, leveraging Scala, Java, and AWS to enable efficient data processing and analytics
- Internal Project: Architected and implemented a proof of concept for CQRS applications that process high-volume transactional data, achieving low latency with AWS Kubernetes, Cassandra, and Aurora
- Internal Project: Experimented with noise injection in recurrent neural nets using TensorFlow in Python, for language processing
Lead Software Developer
Pinnacle 21 (acquired by Certara)
11.2015 - 04.2018
- Led development of a metadata repository with Lagom microservices, GraphQL, and event sourcing principles, improving data retrieval speed and scalability, while reducing latency
- Technical lead of the team
- Coached junior developers
Senior Software Engineer
LeadiD (now Verisk)
08.2014 - 10.2015
- Designed and led the implementation of a scalable, low-latency distributed system based on Akka actors, Apache Kafka, and Scala, for handling leads in multiple industries, including finance and insurance
- Mentored the engineering team in the development of high-performance data systems
Senior Software Engineer
Hibu
11.2013 - 07.2014
- Improved the distributed search engine by migrating from Lucene to Solr, optimizing the performance and latency of search queries across large datasets
Principal Software Engineer
CA Technologies, Inc.
10.2004 - 09.2013
- Led performance enhancement initiatives in SiteMinder, achieving substantial latency reductions and throughput improvements for high-volume access control systems in enterprise environments
- Proposed, designed, and implemented the SiteMinder’s scriptable role-based access control model
Senior Software Engineer
Netegrity, Inc. (acquired by CA Technologies)
03.2001 - 10.2004
- Developed multiple features in SiteMinder. Promoted after the company was purchased by CA Technologies.
Software Engineer
Software Emancipation Technologies
11.1997 - 02.2001
- Developed the data flow analysis engine for a static code analyzer
Education
Post-Doctoral Research - Mathematical Physics
Institute For Advanced Study
Princeton, NJ08-1997
Ph.D. - Mathematics
Massachusetts Institute of Technology
Cambridge, MA06-1996
Skills
- Scala
- Clojure
- Java
- Python
- JavaScript
- Typescript
- C/C
- Kotlin
- Ruby
- R
- Apache Kafka
- Akka
- AWS
- Cassandra
- Kubernetes
- Lagom
- PostgreSQL
- MongoDB
- ElasticSearch
- LDAP
- Distributed Systems
- Low-Latency Systems
- High-Performance Computing
- Microservices Architecture
- Event Sourcing
- CQRS
- Machine Learning
- Data Pipelines
Languages
English
Native or Bilingual
Russian
Native or Bilingual
Ukrainian
Full Professional
Spanish
Limited Working
Interests
- An award-winning science fiction author
Timeline
Software Consultant
Chariot Solutions
05.2018 - Current
Lead Software Developer
Pinnacle 21 (acquired by Certara)
11.2015 - 04.2018
Senior Software Engineer
LeadiD (now Verisk)
08.2014 - 10.2015
Senior Software Engineer
Hibu
11.2013 - 07.2014
Principal Software Engineer
CA Technologies, Inc.
10.2004 - 09.2013
Senior Software Engineer
Netegrity, Inc. (acquired by CA Technologies)
03.2001 - 10.2004
Software Engineer
Software Emancipation Technologies
11.1997 - 02.2001
Post-Doctoral Research - Mathematical Physics
Institute For Advanced Study
Ph.D. - Mathematics
Massachusetts Institute of Technology
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