I help other engineers with design and implementation of their projects as well as working with other architects on systems that are core to all development teams at ostk.  This can range from reference projects for integrating with vault, jenkins pipelines to implementation of core services that are used by all development teams.  One of my favorite parts is mentoring other senior engineers in both leadership and technical knowledge.

Principal Engineer

Best technical achievement was the design and implementation (with the team) of a distributed asynchronous state machine used to process financial transactions. This project was based heavily on Microsoft tools including Azure Pipelines for ci/cd, Azure Queue storage for the state machine work storage, and Microsoft SQL Server for the persistent storage.

There were several interesting projects that I worked on at CMT
* Full stack development on the Patient Activity application utilizing a new Java microservice, Angular 2, and Bootstrap CSS. Interesting uses of RxJS to load thousands of data points while still enabling the application to load and be usable by the client.
* Continually mentoring other developers on logistical concerns of coding: logging, javadoc, unit and integration testing with enough rigor, writing meaningful commit messages and descriptive pull-requests.
* Worked on the design, implementation, and maintenance of the DataLoader which is a flexible and performant ETL tool.

Senior Software Engineer

Part of a team of senior engineers/architects that redesigned the product page to use handlebars as the templating engine for both the server side and front-end templates. This was done to separate front-end templates from the backend code (typical of jsp style projects) and allow the front-end engineers full control over the templates without any backend code deploy. The project was a significant refactor and redesign of 1000’s of lines of code scattered across 10+ maven modules. Once the product page redesign was successful I moved to the teams redesigning the cart and checkout pages. Implemented several custom handlebars helpers for the server side templates.

I worked as a contractor for STG and I had two placements: Progrexion and Overstock.com. During my time at Progrexion I worked on a variety of projects: 
* Designed and implemented a dashboard style web app used to track application statistics such as the number of credit item removals across all clients credit reports.
* Mentored developers on the use of advanced features of Jersey: seamless validation of query parameters via Java classes, bean dependency injection via Jersey providers, exception mappers to separate web service logic from error handling.
* Implemented multiple web services used for CreditRepair.com. Worked with the front end team to remove all database access from their code and move access to restful web service calls.

I transitioned from Progexion to Overstock.com where I worked on a variety of applications and web services
* Refactoring existing fraud detection application, written in Wicket, used by call center employees. Implemented pagination on both the front end and back end to eliminate out of memory issues plaguing the application. 
* Lead developer for the Bridge 2 Solutions web service. Web service developed using Jersey, Tomcat, and Maven. Bridge 2 Solutions used the WS to send customer orders and payments to Overstock.

Software Developer

In the years at Pearson I learned how big a difference coding in industry versus academia is. Some, but not all, tasks that I completed were 
* Updating 10 year old legacy projects to use standard modern technologies, such converting ant builds to maven, and migrating from Jetty 5 to Jetty 7 to deploy new web UI framework.
* Used Spring WebMVC 3.x backend and ExtJS 3.4 technologies to help implement a frontEnd Web UI application.
* Lead developer on Agent Identification Report (AIR).

I've worked with jvm/java daily for my entire career and am excited for the new java 18 features especially pattern matching!  I enjoy concurrency utilizing Executors, Atomic* classes, Thread pooling, etc...  

Kotlin is my favorite language by winning with '1000 cuts'.  Type inference, coroutines, functional programming, lambdas with receivers for DSL's, and code organization features.  Whilst no language is perfect I thoroughly enjoy Kotlin!

Understanding how an application is deployed both locally and in test/production environments is critical to a success.  Ask me anything from coordinating multiple docker images/services via docker-compose or how to start with an empty Dockerfile.

I enjoy the challenge of slicing and dicing the domain into microservices using domain modeling.  Next up is efficient communication, asynchronous or synchronous, between services to build business features and user experiences.

Personal details

Paul H.

Summary

Technical skills

Work Experience