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
Fort Washington, PA
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)
Blue Bell, PA
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)
Ambler, PA
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
King of Prussia, PA
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.
Framingham, MA
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)
Waltham, PA
03.2001 - 10.2004
- Developed multiple features in SiteMinder. Promoted after the company was purchased by CA Technologies.
Software Engineer
Software Emancipation Technologies
Burlington, MA
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