Software Engineer

4/2020 – 6/2020

Design and development of comprehensive ingestion data pipeline aimed for bringing new and enriching existing restaurants to Quandoo platform.

Softwareentwicklung (allg.), Spring, Amazon Web Services (AWS), Kotlin

9/2019 – 1/2020

Design and development of backend services for consumer facing applications and Circ public APIs.

Spring, Amazon Web Services (AWS), Kubernetes

2/2019 – 9/2019

Design and development of Universal Id -Hyperlink entfernt- to unify users and authentication for SAP partners.

Spring, Java Message Service (JMS), Amazon Web Services (AWS)

6/2018 – 9/2021

Support and lead of various activities of SDLC including system architecture review/design, introducing XP/Scrum practices, mentoring/coaching developers/product owner/scrum master, code reviews

Agile Entwicklung, Behavior Driven Development (BDD), Enterprise Architect (EA), Microsoft Azure, Node.js

4/2018 – 9/2018

Design and development of tooling around data-driven insight services to benchmark, plan, predict and simulate business scenarios using client transactional business data. 

J2EE (Java EE), Node.js, Python, Spring, Kubernetes

1/2018 – 3/2018

Design and development of multimodality(combined transport) platform to support urban commuters with alternative means of transport (beside private car and public transport).

Functional reactive programming (FRP), Scala, Spring, Amazon Web Services (AWS)

11/2017 – 12/2017

Helping IoT department to build demo application for CES 2018 to show capabilities of a home-built microservices-based architecture for a fully distributed navigation system for vehicles.

PostgreSQL, Functional reactive programming (FRP), Node.js, RPC (Remote Procedure Call)

9/2016 – 6/2017

Supported an implementation of digital transformation for a major German insurance group. Designed and developed an adapter layer (REST, messaging) to allow integration with heterogeneous, proprietary client systems. Introduced and supported an implementation of clean code techniques, TDD, BDD, SOLID and XP practices to a client organisation. Built an automated CD/CI flow to allow fast and trackable deployment of microservices based architecture.

Node.js, Amazon Web Services (AWS), Kubernetes

2/2016 – 9/2016

Maintained and developed new modules of Webtrekk real-time bidding platform - DSP (demand-side platform) system to serve more than 2k bids per second. Collaborated with mathematicians to develop new and optimise existing bidding algorithms and strategies.
Involved in migrating Hadoop cluster (Cloudera) from AWS to own data center.

Apache Spark

5/2015 – 1/2016

Designed and developed Fanmiles loyalty platform, defined a Microservices based architecture of the system. Evangelised an agile culture across the whole organisation. Introduced and implemented extreme-programming practices to an engineering team.
Closely cooperated with devops to align and build automated CI/CD pipeline and IAC (Infrastructure as code).

MongoDB, Node.js, Spring, Amazon Web Services (AWS)

6/2013 – 5/2015

Member of ”European Product Development” supporting various European Business Units by
providing full-featured software products in an Agile way. Worked closely with BU to build best of breed solutions which matter.

Behavior Driven Development (BDD), J2EE (Java EE), Scala, Spring

10/2012 – 4/2013

Maintenance and evolution of Egnyte Cloud Server, including design and implementation of client facing REST API for mobile and web including two factor authentication.

J2EE (Java EE), Spring

9/2010 – 9/2012

Maintenance and evolution of internal CMS. Design and coordinate migration to new CMS platform (CQ 5.3). Design and develop various affiliate integration systems.

J2EE (Java EE), Spring

3/2006 – 8/2010

Coordinated all aspects of Java / JEE development projects. Designed proof of concepts at project inception. Outlined systems architectures and provided recommendations on features of systems / environments, such as frameworks, tools, and coding standards. Managed design and programming of critical systems modules. Provided training to junior developers.

IBM WebSphere Application Server (WAS), Hibernate (Java), J2EE (Java EE), Spring, SOA (Serviceorientierte Architektur), Java Message Service (JMS), SOAP (Simple Object Access Protocol)

9/2005 – 2/2006

Designed and developed new modules for the BZWB24 system. Handled redesign of existing modules to improve functionality and mitigate errors. Promoted to manage a new project as technical lead. Supervised the activities of a team of 3 contractors.

IBM WebSphere Application Server (WAS), Hibernate (Java), J2EE (Java EE), Struts

1/2004 – 7/2006

Programmed client-side applications for customer IT solutions. Created, tested, and debugged J2ME applications. Progressed to take on full-scale projects, with authority over both client-side and server-side development.

Spring, J2ME, Java Message Service (JMS)