Maximilian Hammer - Senior Developer

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Bangkok, Thailand

Experience

Oct 2020 - Jun 2022

1 year 9 months

Berlin, Germany

Test-driven further development of a cross-brand credit card banking system including back-office applications for a leading German bank with 2.5 million customers, based on a microservices architecture, implemented in Java 8-17, Spring Boot, Angular, SQL, Docker and Kubernetes
Technical lead for implementing a back-office portal to deliver marketing campaigns, messages and documents based on up to 50 configurable customer attributes
Leading and improving the development and DevOps guilds for cross-team agile collaboration

Jun 2019 - Sep 2020

1 year 4 months

Berlin, Germany

Improved the synchronous login process from a maximum of 10 logins/s to 250 logins/s by converting the affected microservices and interfaces to asynchronous communication
Migrated 30 microservices (~4000 tests) from JUnit 4 and Spock to JUnit 5 to create a unified, easier-to-understand and maintainable baseline for test-driven development

Jan 2018 - Jun 2018

6 months

Cologne, Germany

Led the Customer Portals department, including managing a team of six on-site staff
Planned sprints and coordinated with ten team members at the nearshore locations in Leipzig and Braşov

Sep 2015 - Dec 2017

2 years 4 months

Cologne, Germany

Managed the project, implementation and further development of rate and business customer portals for energy providers with up to 100,000 customers and a scope of up to 350 person-days
Implemented using a microservices architecture that uses REST for communication and is built with Java 8, AngularJS, Jetty and relational databases

Jul 2014 - Apr 2015

10 months

Altenstadt an der Waldnaab, Germany

Increased the update rate of eBay listings, limited to 100,000 calls/day, by integrating the asynchronous eBay MIP (100,000 listings/hour) for customers with up to 250,000 listings

May 2012 - Present

13 years 9 months

Germany

Continuously developed a production web app in use for over 10 years to track more than 20,000 shifts, including 70,000 rides, and to support payroll and invoicing

Languages And Frameworks: Java, Spring Boot, Angular, Node.js, Typescript, Javascript, Docker, Kubernetes
Tools: Git, Intellij Idea, Maven, Jenkins, Sonarqube, Grafana, Prometheus, Splunk, Jira, Confluence