Hello! I'm Mike
Software Developer
Husband, father, and computer science enthusiast.
About Me
Designed, developed, deployed and currently maintaining internal web app under a microservices model for managing Hostica’s systems and troubleshooting issues related to customers’ accounts, web hosting, domains and connectivity in general.
Experience
Present
May 2020 – Present
TrackX
Software Developer
Los Angeles, CA, USA
Jan 2016 – May 2020
Hostica.com
Software Developer
Los Angeles, CA, USA
Mar 2012 – Jan 2016
Hostica.com
Systems Administrator
Los Angeles, CA, USA
Mar 2007 – Mar 2012
Hostica.com
Systems Analyst & Customer Support
Los Angeles, CA, USA
March , 2007
Skills
- Java
- AWS
- Spring
- Postgres
- SQL
- JDBC
- Docker
- RESTful web services
- Parallel Programming
- Microservices
Education
2001
2017-2020
Georgia Institute of Technology
Master of Science , Computer Science
Atlanta, Georgia, USA
2003 – 2006
UCLA
Bachelor of Arts (B.A.), History
Los Angeles, CA, USA
2011
Blog
My blog was formed specifically with the goal of…..
Automatically Updating Timestamp Fields for Axon State-Stored Aggregates
A state-stored aggregate in the Axon framework is an aggregate which also gets persisted as a classic JPA entity in its own table. Usually this...
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UUID Identifier for Axon Aggregate
As noted in this issue, the identifier for an Axon aggregate most be a String data type. This prevents us from using UUID as a...
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Wildcard Matches With Wiremock
Wiremock is a great tool to use to mock out external APIs and services and you can easily test what payload you may be sending...
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Spring JPA – Select Multiple Entities With a Single Query
While Spring JPA simplifies things for the developer, performance is often unnecessarily sacrificed in the process. For example, say we need to fetch 3 different...
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To NP or not to NP, that is the question. Or, what is NP?
In this post I’d like to quickly clarify the levels in computational complexity theory. Oftentimes there is confusion and misconceptions of the terms P, NP,...
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Java Generics: Bounded Wildcards in Method Declarations
Sometimes it is good to review concrete examples of abstractions in practice to remember their importance. Here we’ll look at bounded wildcards in method declarations,...
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SC19 Debriefing
I’m back home after attending SC19 in Denver this last week. What an experience it was! I’m writing this with everything still fresh in my...
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Hello World
Welcome to the blog of my personal portfolio website, michael.jeszenka.com. Yes, that’s me and I’m happy to have you join me and share my adventures...
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