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Jason Walker

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Last update: 06.09.2022

Java Developer

Graduation: Engineering, University of Cambridge, UK
Hourly-/Daily rates: show
Languages: German (Limited professional) | English (Native or Bilingual) | Italian (Limited professional) | Norwegian (Limited professional)

Attachments

Jason_Walker_CV - Frankfurt.pdf
Jason_Walker_CV_German.pdf

Skills

Technical Skills
  • Java 8 (Sun Certified Java Programmer)
  • Spring Boot, Microservices, REST, Kafka / Streams, JPA / Hibernate
  • JUnit, Mockito, Gerkin/Cucumber, TDD/BDD
  • Spring MVC, HTML, JavaScript, CSS, JSP, Thymeleaf, XML, JSON
  • IntelliJ, Eclipse, Git, BitBucket, Maven, Jenkins, DevOps, CI/CD
  • Cloud: Azure / AWS, Kubernetes / OpenShift, Docker
  • Databases: MS SQL Server, Oracle, Sybase
Non-Technical Skills
  • Agile / Scrum, Jira, Confluence
  • Project / team management (founder of offshore start-up company)
  • Languages: English (native speaker), German, Norwegian, Italian, French, Lithuanian

Project history

04/2018 - 04/2020
Java Developer
Lufthansa AirPlus

Project to develop a payment authorization system for a business travel credit card provider. The
solution was implemented using Java and Spring Boot microservices deployed on Azure cloud. The
developed components functioned as a mediation layer between different applications (TSYS PRIME,
SAP, CRM software) using Kafka messaging and REST APIs. This was part of a major IT transformation
project following the Agile / Scrum process with 2-week sprints. I participated in all stages from
proof of concept until going live. The work involved creation and refinement of user stories,
solution design and development and support of the production system.
Technologies: Java 8, Spring Boot, REST, JPA / Hibernate, Kafka / Streams, Azure cloud, Kubernetes,
Docker, Maven, Git, Jenkins, JUnit, Gerkin/Cucumber, MS SQL Server

07/2017 - 03/2018
Java Developer
Accenture / Deutsche Bahn

Project to develop a new payment gateway service for the German Railways ticket booking systems. The
solution was implemented using Java and Spring Boot REST microservices deployed on AWS cloud and
supported various payment methods (credit card, PayPal, Sofort Bank transfer). This was a greenfield
project following the Scrum process and 2-week sprints. I participated in the initial design and
development phase and was also responsible for the supervision of junior developers.
Technologies: Java 8, Spring Boot, REST, Swagger, JPA / Hibernate, JUnit, Cucumber, Maven, Git,
Vagrant, Docker, Jenkins, AWS, OpenShift

12/2016 - 06/2017
Java Developer
Accenture / SVV

Project for the Norwegian Public Roads Administration (Statens Vegvesen) to develop a new web-based
vehicle registration application to replace legacy systems. Development was across the full stack
(front and back end) with strong emphasis on unit / integration testing. Used the Scrum process and
3-week sprints.
Technologies: Java 8, Spring, JUnit, JSP, HTML, Maven, Git, Oracle, Vagrant, Docker.

08/2014 - 06/2016
Java Developer
Commerzbank

Development and maintenance of "Hierarchy Manager" web application for Investment Banking Finance &
Risk Management division. The application is used to manage the IB portfolio hierarchies and
provides interfaces to many Front/Back Office systems. The goal of the project was to redesign and
optimize the legacy software and also to improve the development process in a small team. The final
stage involved handing over the development to an offshore team.
Technologies: Java, Spring, JPA / Hibernate, JSP, Maven, Eclipse, Microsoft TFS, JBoss, Sybase,
Windows, Linux, HP Quality Center.

Local Availability

Open to travel worldwide
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