Full-time dad 👨‍👩‍👦‍👦  since March 2018
In my spare time I tend to spend as much time outside as I can, try myself at some woodworking or gardening project, maintain a small blog and maintain some open-source projects.
Team Lead Software Engineer @ Movio 5 years 3 months
Led port of high throughput application to send email marketing campaigns from monolithic to microservice architecture.
Go · Scala · akka · Kafka · JSON · Cassandra · Docker · Kubernetes
Set up monitoring, alerting and continuous integration infrastructure for quick turnaround in a microservice setting.
Prometheus · Grafana · Jenkins · Docker · Kubernetes
Technical lead for large client integration project.
Scala · akka · XML · MariaDB
Led interface localization of main web application.
PHP · Scala · Java · XSLT · gettext
Ported performance critical segmentation application from row- to column-oriented database to achieve 100-500x speed up.
Scala · PHP · XML · JSON · MariaDB · MariaDB ColumnStore / InfiniDB
Software Engineer @ IPTEGO (now part of Oracle) 16 months
Designed and developed web application for monitoring and inspection of possible fraud cases in VoIP network.
Python · Flask · Javascript · ExtJS · JSON
Developed a multi-process application to detect and prevent fraudulent use of VoIP networks based on packet inspection.
Python · Redis · ZMQ · JSON
Software Engineer @ SAP Labs 3 months, internship
Developed compiler-frontend and AST transformer for research programming language.
Newspeak · Javascript
Software Engineer @ Finnlabs 16 months, part-time
Transformation of semi-structured dictionary data for optimized search access on pons.eu.
XSLT · Java
Developed web application interface for community-driven dictionary.
Ruby · Ruby on Rails
Software Engineer @ SAP Research 7 months, internship
Developed a mobile phone application to enable end-user access to SAP business services.
Java · XML · Android
Implemented an OASIS standard-compliant web-service messaging component.
Java · SAP Netweaver JEE · XML
Web Developer @ Worcester Polytechnic Institute 13 months, part-time
Developed web interface to manage sensor readings from fire safety experiments.
Java · JSP/Servlets · Oracle DB
Assisted transport as community service @ Red Cross 10 months
Software Engineer @ Charles River Laboratories 2 months, internship
Designed and implemented a phone directory with support for user privileges.
Java · JSP/Servlets · MS SQL Server · MS Access
Tech
Java
Scala
Go
Javascript
Python
Ruby
PHP
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MariaDB
Kafka
ColumnStore
Cassandra
Redis
Docker
Kubernetes
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Emacs
coreutils
git
Jenkins
XML
JSON
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# for one year experience
Academia
M.Sc. @ Hasso Plattner Institut in 2010
B.Sc. @ Worcester Polytechnic Institute in 2007
Ph. D. candidate @ Hasso Plattner Institut 10 months
Teaching Assistant @ Hasso Plattner Institut 6 months
Research Assistant @ Brown University 2 months
Felix Geller
credits