Java/Kotlin Backend Developer

5/2021 – 3/2022

• Participated on development of a travel insurance point of sales API.
• Integrated external systems, API first development, extensive refactoring,
introduced coding guidelines, mentored junior colleagues.
• Used Java 11, Spring Framework/Boot/Data, OpenAPI, Flyway, Post-
greSQL, S3, Maven, TypeScript, Apigee, Kibana, Gitlab CI.

Java (allg.), Swing (Java)

8/2019 – 3/2021

• Participated on development of a 3rd party integration platform.
• Participated on development of a core API serving 6 million users.
• Developed a Spring Batch ETL sending millions of transactions per day to
an external company providing discounts.
• Used Kotlin, Spring Framework/Boot/Batch/Data, Flyway, Liquibase, Post-
greSQL, Redis, JSch, Maven, Gradle, TypeScript, Node.js, Python, Docker,
TeamCity, Gitlab CI, OpenShift.

Java (allg.), Kotlin, Spring

5/2018 – 12/2019

• Participated on development of a payment part of banking system.
• Developed modules for anti-money loundering, direct debits and approvals.
• Used Java 8, Spring Framework/Data, RAML, MongoDB, Maven, Chef.

Java (allg.), Spring