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% ========== HEADER ==========
\name{Dennis}{Thiessen, M.Eng.}
\address{Bern, Switzerland}{}{}
\phone[mobile]{+41~795~955~585}
\email{dennis@thiessen.io}
\extrainfo{\href{https://linkedin.com/in/dennis-thiessen}{linkedin.com/in/dennis-thiessen}}
% ============================

\begin{document}

\recipient{Hiring Team}{Industry Solutions Engineering (ISE)\\Microsoft Switzerland GmbH\\Z\"urich, Switzerland}
\date{\today}
\opening{Dear ISE Hiring Team,}
\makelettertitle

\begin{justify}
% P1 — Hook: Engineering Fundamentals Playbook / code-with model
ISE's public Engineering Fundamentals Playbook describes a working style I recognize: production code written side by side with the customer's engineers, in their languages and frameworks, with testing and observability treated as fundamentals. Doing that across many enterprises instead of inside one is why I want the Senior Software Engineer position in ISE Z\"urich (req.\ 200040836).

% P2 — Swisscom: data foundation for agentic AI, LLM integration, production ownership
At Swisscom I build governed data products with active metadata on AWS, inside the company-wide Data Mesh. They are the grounded data foundation our agentic AI workloads query. So when your team wrote about propagating SharePoint permissions into AI Search for enterprise RAG, that problem looked familiar: making governed, access-controlled data usable for LLM solutions is my daily work, from LiteLLM API integrations to custom GPTs grounded in domain knowledge. As Component Owner I carry on-call responsibility for business-critical pipelines.

% P3 — Cross-industry ramp record + Bosch production ML and customer-facing platform work
Becoming productive fast inside an unfamiliar enterprise is the pattern of my career: applied research at Fraunhofer, semiconductor manufacturing at Bosch, insurance at Generali, broadcast in Norway at Vizrt, telecom at Swisscom, and a master's thesis written in Shanghai. At Bosch I moved containerized ML inference into a 24/7 wafer fab, where there are no maintenance windows and a failed deployment costs yield. I also co-owned the Spotfire analytics platform for internal engineering customers and co-presented it at the TIBCO Analytics Forum 2022. Embedded engineering with customer teams is what I already do, one company at a time.

% P4 — Why Microsoft Switzerland now + honest AWS positioning + call to action
Microsoft's USD 400 million Swiss datacenter expansion, with in-country data residency for regulated customers, will bring ISE Z\"urich exactly the enterprises I know from the inside. My cloud depth is AWS (Solutions Architect certified); the practices transfer, and I learn platforms quickly. I'm a native German speaker in Bern, ready for the travel, and glad to talk through where your current engagements need this profile.
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% ========== CUSTOMIZE THESE ==========
{Sincerely,\\
Dennis Thiessen, M.Eng.\\
Staff Data, Analytics \& AI Engineer\\
Swisscom (Schweiz) AG}
% ======================================

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