▸As part of a cross-functional team, rebuilt and migrated motor-talk.de onto AWS EC2 instances orchestrated with HashiCorp Nomad, automating infrastructure provisioning via Terraform and Ansible — completed within 2 months of acquisition.
▸Migrated 150+ VMs from oVirt to Proxmox and 20+ bare-metal servers from CentOS 7/8 to AlmaLinux 9 with zero downtime, managing the full fleet through Chef for consistent, automated configuration.
▸Integrated Cloudflare as a reverse proxy in front of company infrastructure, enabling DDoS protection and securing 85Mio+ requests/day across public-facing services.
▸Automated FortiGate firewall rule management with Terraform, dynamically sourcing node data from Chef server to replace manual UI-based changes.
▸Participated in on-call rotation, providing 24/7 incident response for multiple high-traffic web platforms.
04.2021 – 09.2023
Munich, Germany
Senior Software Engineer/highfivve GmbH (Subsidiary of gutefrage.net GmbH)
▸Led partial migration of infrastructure to AWS using Terraform.
▸Onboarded new publishers onto the highfivve platform using TypeScript.
▸Built reporting tools that integrated partner reporting data into a unified view.
▸Developed an internal management system for publisher tags using GraphQL and Scala.
▸Migrated gutefrage.net's container orchestration from Apache Mesos/Aurora to Nomad, containerizing workloads with Docker.
12.2020 – 03.2021
Munich, Germany
Senior Developer/Senacor Technologies AG
▸Designed and implemented a Spring Boot REST service backed by Redis for a major automotive client.
▸Built an ISO 8583-based parsing tool for a banking client's debit-card project that the team adopted to unblock long-stalled payment-processing work.
09.2018 – 06.2020
Munich, Germany
Senior Software Engineer/jambit GmbH
▸Built a vehicle telemetry data collector for a major automotive client, processing in-vehicle data through Spark and Kafka Streams pipelines (Scala) and storing it as Parquet for analytics.
▸Enabled data analysts to explore the collected data through Apache Zeppelin notebooks.
▸Developed firmware for an embedded payment terminal communicating with smart cards, for a digital currency project.
01.2018 – 06.2018
Munich, Germany
Senior Developer/Materna GmbH
▸Joined an automotive vehicle-telemetry data collector project mid-development to support a tight go-live schedule, working within a 7–9 person team.
04.2015 – 12.2017
Munich, Germany
Software Engineer/gutefrage.net GmbH
▸Implemented and maintained product features across the gutefrage.net platform.
▸Migrated a legacy PHP monolith into a Scala/Finagle microservices architecture, backed by MySQL and RabbitMQ.
▸Analyzed and visualized key business KPIs for the platform.
▸Integrated and maintained online advertising systems.
▸Supported the operations team in a DevOps capacity.
02.2012 – 03.2015
Berlin, Germany
Software Developer/idealo internet GmbH
▸Implemented clustered computation over large volumes of shop/product data.
▸Developed the preis.de Android app.
01.2011 – 07.2011
Daejeon, Korea
Software Developer/Honestech Inc
▸Built and published an Android app implementing a UPnP/DLNA media renderer and controller.
07.2005 – 11.2007
Seoul, Korea
Web Developer/Webcommunity
▸Built and maintained client websites; administered Linux servers.