dennisthiessen
4525837081
My Gatsby Deployment pipeline / build-and-deploy (push) Successful in 3m46s
Make the name a quiet heading and let the one-line thesis lead the hero. Replace the portrait with a center-cropped 4:5 version of the new photo (downscaled 1.2 MB -> 91 KB) and drop the now-pointless grayscale hover. Remove em-dashes from copy (restructured prose; en-dashes for year ranges; mid-dot in the page titles). Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
203 lines
7.6 KiB
JavaScript
203 lines
7.6 KiB
JavaScript
import React from 'react'
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import { Helmet } from 'react-helmet'
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import Layout from '../components/layout'
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import avatar from '../assets/images/avatar.jpg'
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const SITE_TITLE = 'Dennis Thiessen · Data, Analytics & AI Engineer'
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const SITE_DESCRIPTION =
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'Dennis Thiessen is a Staff Data, Analytics & AI Engineer in Bern, Switzerland, building the data pipelines and ML infrastructure that production systems run on.'
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const EMAIL = 'dennis@thiessen.io'
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const LINKEDIN = 'https://www.linkedin.com/in/dennis-thiessen'
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// Career as a pipeline, most recent first. Each node is a role.
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const ROLES = [
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{
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year: '2023 – PRESENT',
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company: 'Swisscom',
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location: 'Bern, CH',
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title: 'Staff Data, Analytics & AI Engineer',
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description:
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'ETL and streaming pipelines in Python, Kafka and SAP BODS feeding a Teradata warehouse, while migrating the legacy stack onto AWS (Glue, Redshift, Lambda, Step Functions, Airflow).',
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live: true,
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},
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{
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year: '2020 – 2023',
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company: 'Bosch Semiconductor',
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location: 'Dresden, DE',
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title: 'Senior Data Engineer',
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description:
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'Containerised ML inference (Docker, Kubernetes, Ansible) into 24/7 semiconductor production lines, and built Python, Java and C# data services over Oracle and Hadoop/Impala.',
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},
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{
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year: '2018 – 2020',
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company: 'Fraunhofer CML',
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location: 'Hamburg, DE',
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title: 'Research Software Engineer',
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description:
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'Optimisation-based crew-scheduling decision support in C#/.NET, plus research microservices and a Jenkins CI/CD pipeline with quality gates.',
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},
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{
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year: '2017 – 2018',
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company: 'Vizrt',
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location: 'Bergen, NO',
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title: 'DevOps Engineer',
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description:
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'A distributed video-transcoding backend in Python and C++, with automated audio/video integration testing for reliable releases.',
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},
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{
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year: '2015 – 2017',
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company: 'Generali',
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location: 'Hamburg, DE',
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title: 'Software Engineer & IT Consultant',
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description:
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'A Java/J2EE workflow portal on Oracle, and introduced behaviour-driven development and RPA automation (UiPath, Camunda).',
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},
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]
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const STACK = [
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{ label: 'Languages', items: ['Python', 'SQL', 'Java', 'C#', 'TypeScript', 'C++'] },
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{ label: 'Data & Pipelines', items: ['ETL / ELT', 'Kafka', 'Airflow', 'SAP BODS', 'Teradata', 'Hadoop / Impala'] },
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{ label: 'Cloud & Infra', items: ['AWS', 'Docker', 'Kubernetes', 'Ansible', 'CI/CD'] },
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{ label: 'ML & Observability', items: ['PyTorch', 'scikit-learn', 'ELK', 'Grafana', 'Prometheus'] },
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{ label: 'Credentials', items: ['M.Eng., UniBw München', 'AWS Solutions Architect – Associate', 'iSAQB CPSA-F'] },
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]
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const Tags = ({ items }) =>
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items.map((item, i) => (
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<React.Fragment key={item}>
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{i > 0 && ' · '}
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<span className="t">{item}</span>
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</React.Fragment>
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))
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const IndexPage = () => (
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<Layout>
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<Helmet>
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<html lang="en" />
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<meta charSet="utf-8" />
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<title>{SITE_TITLE}</title>
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<meta name="description" content={SITE_DESCRIPTION} />
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<meta name="theme-color" content="#15171c" />
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<link rel="preconnect" href="https://fonts.googleapis.com" />
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<link rel="preconnect" href="https://fonts.gstatic.com" crossOrigin="anonymous" />
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<link
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rel="stylesheet"
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href="https://fonts.googleapis.com/css2?family=Hanken+Grotesk:wght@400;500;600&family=Space+Grotesk:wght@400;500;600;700&family=Space+Mono:wght@400;700&display=swap"
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/>
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</Helmet>
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<div className="wrap">
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<header className="topbar">
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<span className="topbar__name">Dennis Thiessen</span>
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<span className="status">
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<span className="status__dot" aria-hidden="true" />
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Open to new work
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</span>
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</header>
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<section className="hero">
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<div className="hero__text">
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<p className="eyebrow">Data · Analytics · AI Engineering</p>
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<h1 className="hero__name">Dennis Thiessen</h1>
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<p className="hero__lead">
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I build the pipelines and platforms that move data and run models in production.
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</p>
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<p className="hero__meta">
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<strong>Staff Data, Analytics & AI Engineer at Swisscom</strong>, based in Bern,
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Switzerland, with 8+ years across data engineering, ML infrastructure and DevOps.
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</p>
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<nav className="actions">
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<a href={`mailto:${EMAIL}`}>{EMAIL}</a>
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<a href={LINKEDIN} target="_blank" rel="noopener noreferrer">
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LinkedIn ↗
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</a>
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</nav>
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</div>
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<div className="portrait">
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<img src={avatar} alt="Dennis Thiessen" />
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</div>
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</section>
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<section className="section">
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<h2 className="section__label">Profile</h2>
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<div className="prose">
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<p>
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I work where <strong>software engineering meets operations</strong>. I design ETL/ELT and
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streaming pipelines, containerise ML inference, and turn monolithic data processes into
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event-driven, serverless systems.
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</p>
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<p>
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Right now I'm at Swisscom in Bern, moving a legacy Teradata and Oracle stack onto
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AWS. What I care about most is <strong>automation and reliability</strong>: systems that
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run themselves, recover on their own, and don't page anyone at 3 a.m.
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</p>
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</div>
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</section>
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<section className="section">
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<h2 className="section__label">Experience</h2>
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<ol className="roles">
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{ROLES.map((role) => (
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<li className={`role${role.live ? ' role--live' : ''}`} key={role.company}>
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<div className="role__rail" aria-hidden="true">
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<span className="role__node" />
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</div>
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<div className="role__body">
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<p className="role__year">{role.year}</p>
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<div className="role__head">
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<h3 className="role__co">{role.company}</h3>
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<span className="role__loc">{role.location}</span>
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</div>
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<p className="role__title">{role.title}</p>
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<p className="role__desc">{role.description}</p>
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</div>
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</li>
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))}
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</ol>
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</section>
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<section className="section">
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<h2 className="section__label">Stack</h2>
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<div className="stack">
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{STACK.map((group) => (
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<div className="group" key={group.label}>
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<p className="group__label">{group.label}</p>
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<p className="group__tags">
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<Tags items={group.items} />
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</p>
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</div>
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))}
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</div>
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</section>
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<section className="section">
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<h2 className="section__label">Contact</h2>
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<div>
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<p className="contact__intro">
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Open to interesting problems in data, ML and platform engineering, in Switzerland or
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remote. Email is the fastest way to reach me.
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</p>
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<a className="contact__email" href={`mailto:${EMAIL}`}>
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{EMAIL}
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</a>
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<div className="contact__links">
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<a href={LINKEDIN} target="_blank" rel="noopener noreferrer">
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LinkedIn ↗
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</a>
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{/* Add a GitHub profile URL here when you have one you want public. */}
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</div>
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</div>
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</section>
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<footer className="colophon">
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<span>© {new Date().getFullYear()} Dennis Thiessen</span>
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<span>Bern, Switzerland</span>
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</footer>
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</div>
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</Layout>
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)
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export default IndexPage
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