Code, companies, and classrooms.

Senior Software Engineer (Consultant)

Oepfelbaum IT Management — at LGT · Zürich / Bendern

Iceberg · K8s · Java/Python

Building macaw, LGT's next-generation data lake — Iceberg on Kubernetes, market-data integration at private-banking scale.

• Consultant via Oepfelbaum IT Management AG, deployed full-time at LGT — Liechtenstein's royal private bank and one of the largest privately owned wealth managers in the world.
• Core engineer on macaw, LGT's strategic data lake: Apache Iceberg as the table format, Kubernetes/Helm for the runtime, Java and Python on the data-engineering side.
• Designing and shipping market-data integrations that feed downstream investment, risk, and reporting workflows — production-grade pipelines under banking-grade compliance constraints.
• Wider focus areas at Oepfelbaum: web architectures, cloud, Apache Kafka, Kubernetes, Java/TypeScript, plus coaching of junior engineers.

Instructor

ICT-Berufsbildung Zentralschweiz · Lucerne, CH

~2 weeks/yr · since 2017

Training Switzerland's next generation of tech professionals.

• Part-time instructor (~2 weeks/year) training emerging Swiss tech professionals across technical skills and real-world industry applications.
• Teach modules including M259 (ICT solutions with machine learning), M335 (mobile application development), M216 (Internet of Everything), and M101 (web presence creation).
• Additional focus on educating students about gaming, dopamine, and responsible technology use.

Co-founder & CTO

databaum · Lucerne, CH

100 customers · first season

Built an ML-powered agritech platform from zero to 100 customers in one season.

• Co-founded an agritech startup with plant scientist Saurabh, building a disease-management platform that helps farmers make data-driven decisions — aligned with the UN Sustainable Development Goals.
• Built the core technology from scratch: IoT data ingestion, custom ML models for disease prediction, and a mobile-facing platform handling millions of data points across hundreds of users.
• Onboarded 100 customers in the first season, validating product-market fit, and conducted direct field research with farmers across Switzerland.
• Led fundraising — pitch decks, business plans, investor engagement, and follow-on rounds. The company is still operating and I remain a shareholder.

Co-founder & CIO

DataBerg · Alpnachstad, CH

3 countries · IoT + web

Ran technology across three countries — web apps, IoT, and a distributed team.

• Co-founded an international web studio with offices in Switzerland, the Netherlands, and Russia; owned company-wide technology strategy, architecture, and all Swiss client relationships.
• Built production web applications on Elixir/Phoenix, VueJS, and PostgreSQL.
• Designed and deployed IoT solutions — indoor (Z-Wave, ZigBee, enOcean) and outdoor (LoRaWAN) — for smart homes, asset tracking, and environmental monitoring.
• Built custom deployment scripts for one-command server provisioning and led a multi-disciplinary, internationally distributed team.

Shipped a keyless Tesla rental system in seven days — hardware hack to production.

• Revamped the booking website and automated key operational processes for a Tesla rental company.
• Built a remote car-access solution in one week: soldered a Tesla key to a Raspberry Pi Zero hidden in the dashboard, with a mobile app communicating over Bluetooth, WiFi, or 3G.
• Enabled fully keyless rental — customers could unlock and access cars even in areas with no connectivity.

Software Engineer (Ruby)

GARAIO AG · Bern, CH

2h → 7min CI

Cut CI build time from two hours to seven minutes and automated the entire deploy pipeline.

• Reduced CI build time from over two hours to seven minutes.
• Automated deployments — turning a two-hour manual process into a single command, then a one-click operation — and built a health-check system for all production servers.
• Developed the 'Kostenmiete' feature for GARAIO REM's property-management software and onboarded new team members into the development workflow.

Software Engineer (Intern → Lead)

SBB — Swiss Federal Railways · Switzerland

Safety-critical · Java

Built and led the Java backend for a safety-critical railway tool — from intern to lead.

• Worked part-time during studies on TUSP, a safety-critical field tool for railway workers covering orientation, object interaction, and work documentation.
• Progressed from intern to lead server-side developer, owning all backend development in Java.
• Ensured robustness, scalability, security, and full compliance with railway safety and regulatory standards.