Backend Engineer with QA Experience

6/2021 – 6/2026

• Implementing customer EV charging platform with Kotlin microservices with Springboot - user registration, Stripe subscriptions, plan renewal, multiple app support
• Designing and implementing RESTful APIs, libraries, plugins and metric service
solutions with the help of AI: Claude
• Working closely with app developers, product owners in a cross-functional team
• Designing database schemas and entities in MongoDB
• Implementing payment and subscription flows with Stripe API

IT Ingenieur- Identitätsmanagement

10/2018 – 12/2021

Designing and implementing software in Kotlin/Java with Unit, Integration and Acceptance testing
o Involved in designing microservice architecture and RESTful APIs
o Writing E2E tests in Selenium
o Taking part in Smoke, Load and Stress tests
o Experience with CI/CD pipeline, EKS, API Specs

Java (allg.), Continuous Integration, Kotlin, Mysql

12/2015 – 12/2018

o Coding in Java to automate massive data inserts by 30-90%
o Experience with streaming, Elastic Search, JSON Objects, SQL Databases
o Spot checking and fixing SQL code to ensure stations are properly updated in the databases, while working with XML, Github, Jenkins, JIRA Agile
o Tracking, assigning and monitoring bugs, tasks and stories in JIRA

Json, Jira, Mysql