The goal of this project was to rewrite an existing frontend for a white label portal with a modern tech stack, with focus on improving the ux of the application, as well as modernize its UI design with a glassmorphism look and feel.

• Creating a reusable, browsable component library for the new portal
• Rewrite the existing portal with a modern techstack and design
• Implementing a gateway to access required backend services with a single API

Achievements:

• Successful relaunch of the improved frontend with a modern look and feel
• Noticeable performance boost of the application
• Simplification of workflows and UX

Analyzing and designing a greenfield application for digital customer cards for iOS and Android Wallets for a large German trading company

• Analyze requirements and propose a technical solution
• Design a microservice architecture to integrate the new customer cards within the existing environment of the company
• Implementation of first prototype
  

Achievements:

• Creation of a working proof of concept for digital customer cards

• Implement an API as gateway for the OneTrust integration

Achievements:

Proof of concept of integrating OneTrust as consent management platform into the existing landscape of the company

• Designing a serverless application on AWS to deploy the machine learning application and make it accessible via a REST API.
• Implementing Lambda services with node.js and typescript
• Setting up an CI/CD Pipeline to automatically initialize the required AWS infrastructure and deploy the python deliverable provided by another team
• Implementing a micro frontend that utilizes the machine learning feature

Achievements:

• Enabling machine learning experts to simply deploy their application
• Automatic and secure creation of needed infrastructure
• Creation and integration of a web application to utilize machine learning features

Achievements:

• Finish implementation of a platform independent video player for web, android, iOS and Smart TVs
• Successful launch of the new video player on web
• Improved tracking for data analysis
• Improved revenue by smarter advertisement features

coworkers and the company

2019 ? 2021: Agile development for a prominent German newspaper

I was supporting the team responsible for paid, digital content of the newspaper.

• Develop and maintain features regarding paid articles, paywall and upselling
• Develop and maintain user management, including login and registration, for end users
• Adding an oAuth interface to the existing in-house user management
• Hosting new services on AWS using infrastructure as code frameworks
• Maintaining existing and implementing new CI/CD pipelines
• Setting up a Kubernetes Cluster for a development environment

Achievements:

• Enable new subscription models
• Ensure DSGVO compatibility
• Enable user specific content recommendations
• Enable user specific subscription offers
• Improved data analysis and tracking

Skills:

AWS, AWS ALB, AWS Cloudfront, AWS DynamoDB, AWS EC2, AWS ECS, AWS EKS, AWS Lambda, AWS RDS, AWS S3, AWS VPC, Agile, Amazon Web Service, CSS, Chef, Concourse CI, Containerization, Docker, Emotion, Express, Grafana, HTML, Javascript, Jenkins, Kubernetes, MongoDB, MongoDB Atlas, Node.js, Npm, Play Framework, PostgresQL, Prometheus, React, Redux, SASS, Scala, Scrum, Terraform, Typescript, backend, cloud-engineering , devops, frontend, jQuery,  media, microservices, news, webdevelopment, jest, cypress

2016 - 2019: Agile development for an online travel agency

I was working both on user generated content management and on a new site

providing editorial content for the users

• Develop microservices within an event sourcing architecture for managing user generated content and the corresponding moderation via administrators
• Integrate image upload and user reviews in the frontend
• Analyze, design and implement a new product for editorial content and customized recommendations

Achievements:

• Create new admin system for moderation of hotel images uploaded by users
• Improve user experience of the user review system
• Soft launch of a new greenfield application providing editorial content and customized recommendations to the users

Skills:

Agile, Akka HTTP, Akka Streams, CSS, Containerization, Docker, Express, Glamerous, HTML, Javascript, Kafka, MongoDB, Node.js, React, Redux, SASS, Scala, Scrum, Typescript, e-commerce, microservices, npm, yarn, mocha, sinon 

2013 - 2016: Agile development and stabilization of a legacy, monolithic application in  the mobile communication sector 

In this project, we operated in a large team (>30 developer) to fix severe problems of

a legacy middleware system in the domain of prepaid mobile contracts.

• Adding automated tests and integration tests to ensure the quality of the system
• Analyse, design and implement new features

Achievements:

• Stabilization of a legacy application that initially couldn?t be deployed anymore
• Set up an automatic test environment to ensure the quality of future releases
• Implementing several new features once the application was stable

Skills:

Agile, Camel, Hibernate, JBoss, JEE, JGiven, Java, Jenkins, Junit, Mockito, OracleDB, Scrum, Spring, Weblogic, devops, telecommunication

2012 ? 2013: Agile development of a web application for managing innovations in the

automotive sector

• Develop new features to the existing application
• Bugfixing and quality assurance

Achievements:

• Adding new features to manage and track the lifetime of innovations

Skills:

Agile, Ext.js, Java, Jenkins, Kanban, Spring Framework, Spring MVC, automotive 

Workshops:

During my employment at TNG, I have created and held the following workshops in collaboration with other co-workers:

• Web-Development with React and Redux (recurring as internal training)
• Testing with Junit and Mockito (recurring as internal training)
• Overview of the Scala programming language (one time during an internal event)

• Setting up a prototype in cooperation with a regional energy supplier, measuring near to real-time energy consumption values for several households
• Supporting smart meter manufacturers with integrating PLC communication into their devices
• Created a backend solution to aggregate and export metering data