Freelance CTO / Cloud Architect (AWS) / Software Engineer
Cloud-focused technology leader with 20+ years building and operating production systems on AWS across IoT, SaaS/PaaS, and high-traffic consumer platforms. Deep hands-on experience designing secure, scalable cloud architectures, leading small high-output teams, and shipping resilient products end-to-end. Strong background in Elixir/Phoenix and Ruby on Rails with a pragmatic, product-driven mindset.
Real-time Smart City platform serving municipalities with live dashboards, sensor ingestion, alerting, and white-label PWAs. Full-stack Elixir/Phoenix/LiveView running on AWS.
Elixir/Phoenix/LiveView application for comparing LLM quality and cost. Exploring GenAI integration and preparing for AWS Bedrock certification.
Sole architect of an AWS-based PaaS offering for FME Server, enabling self-service provisioning, automated scaling, and usage-based billing.
Building Smart City IoT platform. AWS architecture, Elixir/Phoenix development, team leadership.
Built tokenization platform for gold including smart contracts and hardened AWS infrastructure.
Performance engineering for Rails-based reverse logistics platforms on AWS.
Scalability work for high-traffic vacation rental platform.
"Christoph is a top quality lead Rails architect. His technical knowledge on Rails, AWS, databases and web services is vast and up to date. When presented with a complex problem, Christoph brings more to the table than just development skills and can quickly understand requirements and then design and deliver a rock solid solution quickly and efficiently."
"I had the opportunity to work with Christoph and found him to be a very bright and talented co-worker. He quickly identified himself as one of those few in which you invest a high degree of trust and reliance on his day-to-day implementation decisions."