Software development (backend) using Scala 2, Scala 3, and ZIO

Wrote functional Scala (Typelevel stack) to re-implement PayPal subscription management and document the new and existing processes. Fixed DB inconsistencies, code reviews.

Wrote and modified GraphQL resolvers in Typescript using fp-ts. Wrote AWS lambdas in Scala using Cats and Cats Effects.

Functional Programming for development and maintenance of banking software and microservices.Technologies: Scala, Cats, Cats Effects, Doobie, fs2 Stream, http4s, Postgres, MongoDB/Casbah, Circe, JSON, Docker, Kubernetes, Marathon, Prometheus, Grafana, Git/Github, Jenkins, Kibana.

Developed and maintained AWS Microservices and web applications using Agile practices and pair-programming.Technologies: Scala, Java, Groovy, Javascript (NodeJS, Babel, ES6, Chai, Mocha), AWS (EC2, lambdas, SNS, SQS, S3), Github/Git, Jenkins, Kibana, Docker, JSON.

Agile web and back-end development & maintenance using TDD and pair-programming.Technologies: Groovy, Java, Scala, Javascript, Angular, Ajax, Maven, Git, SVN, JMS (ActiveMQ),Hibernate, Tomcat, Spring (MVC, Webflow, Tx, ORM, ...), Freemarker, Velocity, Mockito, FitNesse, JUnit.

Design and implement new functionality in Java, fix multithreading and deadlock issues, improve performance of existing applications.

Wrote new and maintained existing software using Agile methodologies (unit tests, scrums, sprints), primarily in Java. Wrote a data integration program in the ETL language Kettle to insert third party data feeds into Charles River databases. Researched, designed, and implemented the “'As Of' Compliance” feature. Analyzed and fixed performance bottlenecks in Java and SQL. Added enhancements and fixed bugs to several components of theproduct's middle-tier such as the base layer, Compliance, Compliance Service (using JMS), Web services, XML Messaging, and Web Reports. Used FindBugs and PMD to maintain high code quality.Maintained Review Board website for use in code reviews, performed code reviews for other team members, mentored interns, and interviewed candidates for team positions.

Object oriented design using UML. Designed and implemented web applications and back-end software in Java. Wrote Oracle stored procedures and Perl scripts. Mentored team members.

Object oriented development using C++ for Windows, Linux and Solaris. Wrote multithreaded Windows ISAPI servers.

(Part-time) Tutored and lectured students in Computing Science courses.

(Part-time) Wrote a program in C++ to read/write JPEG images.

(Part-time) Wrote parallel programming applications in C++ (ABC++).

(Part-time) Analysis of web servers written in C. Network throughput testing. Wrote a simulation in MacLisp. Ported software from C to C++. Wrote parallel programs in ABC++.

Wrote Application Programming Interface in C.

Wrote a database application.

Database support. Wrote a word processor. Wrote a database application.

Wrote graphing and paint software.