Maximilian Hammer - Senior Developer

Bangkok, Thailand

Experience

Oct 2020 - Jun 2022

1 year 9 months

Berlin, Germany

Test-driven further development of a cross-brand credit card banking including back-office applications of 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 implementation of a back office portal to deliver promotional campaigns, messages and documents, based on up to 50 definable customer features
Leading and improving the development and DevOps guilds for cross-team agile collaboration

Jun 2019 - Sep 2020

1 year 4 months

Berlin, Germany

Improving the synchronous login process, analyzed with load tests, from a maximum of 10 logins/s to 250 logins/s by refactoring the affected microservices and interfaces to be asynchronous
Migrating 30 microservices (~4000 tests) from JUnit 4 and Spock to JUnit 5 to create a uniform, more understandable and maintainable starting point for test-driven implementation

Jan 2018 - Jun 2018

6 months

Cologne, Germany

Managing the customer portals department, including leading a team of six on-site employees
Sprint planning and coordination with ten employees at the nearshore locations in Leipzig and Braşov

Sep 2015 - Dec 2017

2 years 4 months

Cologne, Germany

Project management, implementation and further development of tariff and business customer portals for energy providers with up to 100,000 customers and a scope of up to 350 person-days
Implementation based on a microservices architecture using REST for communication and developed with Java 8, AngularJS, Jetty and relational databases

Jul 2014 - Apr 2015

10 months

Altenstadt an der Waldnaab, Germany

Increasing 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

Nov 2012 - Jun 2014

1 year 8 months

Altenstadt an der Waldnaab, Germany

May 2012 - Present

13 years 3 months

Continuously developed, for over 10 years in production Web App for tracking more than 20,000 shifts including 70,000 rides, as well as supporting payroll accounting and invoicing