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feat: update resume

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274
src/data/cv.json
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@@ -1,274 +0,0 @@
{
"personal": {
"name": "Stefan Imhoff",
"tagline": "Senior Web Developer"
},
"summary": {
"headline": "Professional Summary"
},
"experience": {
"headline": "Professional Experience",
"items": [
{
"company": "XING",
"url": "https://www.xing.com",
"title": "Senior Software Engineer",
"location": "Hamburg, Germany",
"duration": "03/2020-",
"tasks": [
"Development of central design system components for the XING platform using React, TypeScript and styled components.",
"Support of the XING Design System throughout its entire lifecycle: further development, maintenance and documentation.",
"Supporting cross-functional product teams in integrating design system components into new applications.",
"Increased UI consistency and reduced implementation effort through standardized, versioned components.",
"Responsibility for the accessible (A11Y) design of the design system according to WCAG2.2AA, including the definition of guidelines, semantic/ARIA standards, and the introduction of automated and manual A11Y tests.",
"Conception and implementation of a dark/light color scheme for the XING platform, taking into account contrast requirements and state consistency.",
"Development and implementation of a monitoring system for the use of the design system as well as browser extensions for the identification and analysis of components in the browser.",
"Analysis and evaluation of coding challenges as well as conducting job interviews to recruit new frontend developers."
]
},
{
"company": "XING",
"url": "https://www.xing.com",
"location": "Hamburg, Germany",
"title": "Front-End Engineer",
"duration": "01/2011-02/2020",
"tasks": [
"Development, deployment and monitoring of multiple XING products.",
"Concept, idea and development of user interface improvements on the job marketplace, which lead to 59 % more visitors on job ads.",
"Idea and conception of a freelancer marketplace in a Hack Week, which lead to a new product on the platform.",
"Development of an iPad hybrid app with Backbone.js.",
"Creation of a screencast series in cooperation with User Care.",
"Development of multiple products as the logged out profile, public search, onboarding user flow and profile-filling widget with React, Redux and GraphQL."
]
},
{
"company": "Dumrath & Fassnacht",
"location": "Hamburg, Germany",
"title": "Web Designer",
"duration": "09/2005-12/2010",
"tasks": [
"Planning, design, and layout of websites.",
"Implementation in W3C standard with HTML and CSS.",
"Programming websites with content management systems and blog systems.",
"Revision and update of existing customer websites.",
"Customer advisory"
]
},
{
"company": "IGS Development",
"location": "Harbke, Germany",
"title": "Media Designer",
"duration": "02/2002-01/2005",
"tasks": [
"Creation of Internet and Intranet pages with HTML, CSS, PHP, MySQL, and Typo3.",
"Filming of industrial processes and production facilities in Germany and France.",
"Editing and Postproduction with Premiere, Avid, and After Effect.",
"Creation of 3D models and animations with 3ds max, and Cinema 4D."
]
},
{
"company": "Schmitz Kommunikation",
"location": "Hamburg, Germany",
"title": "Intern Web Design",
"duration": "03/2001-04/2001",
"tasks": [
"Relaunch, conception, and realization of websites with Dreamweaver, Fireworks, Photoshop, and Flash 5 & ActionScript."
]
}
]
},
"education": {
"headline": "Education",
"items": [
{
"school": "bib International College",
"url": "https://www.bib.de",
"degree": "Computer Scientist",
"location": "Hanover, Germany",
"duration": "10/1999-09/2001"
}
]
},
"skills": {
"headline": "Key Skills",
"items": [
{
"headline": "Fontend",
"tags": [
"HTML",
"CSS",
"JavaScript",
"TypeScript",
"SVG",
"Web API & DOM",
"Responsive Webdesign (RWD)",
"Adaptive Webdesign (AWD)",
"CSS Grid Layout",
"Flexbox",
"Markdown",
"Progressive Web Apps (PWA)",
"Service Worker",
"Critical Render Path",
"Performance",
"Styled Components",
"Tailwind CSS",
"PostCSS",
"CSS Modules",
"Sass/SCSS",
"Stylelint",
"ESlint",
"React",
"Preact",
"Astro",
"Eleventy",
"Redux",
"Apollo",
"Babel",
"Webpack",
"Gulp",
"Jest",
"Cypress",
"SEO",
"Accessibility (A11Y)",
"Usability"
]
},
{
"headline": "Design",
"tags": [
"UX/UI Design",
"Information Architecture",
"Affinity",
"Figma",
"Sketch",
"Adobe Photoshop",
"Adobe Illustrator"
]
},
{
"headline": "Backend",
"tags": [
"Node.js",
"Express",
"RESTful Services",
"GraphQL",
"MySQL",
"PostgreSQL",
"SQLite"
]
},
{
"headline": "Dev Ops",
"tags": [
"Jenkins",
"GitHub Actions",
"Travis CI",
"Docker",
"Apache",
"NGINX",
"SSH",
"FTP"
]
},
{
"headline": "AI Assistants & Prompt Engineering",
"tags": ["Claude", "GPT", "Gemini", "Grok", "Perplexity Sonar"]
},
{
"headline": "AI for Code & Pair Programming",
"tags": ["GitHub Copilot", "Claude Code", "OpenCode"]
},
{
"headline": "Generative AI",
"tags": [
"GPT Image",
"Nano Banana Pro",
"FLUX",
"Stable Diffusion",
"Phoenix",
"Lucid",
"Sora",
"Veo",
"Kling"
]
},
{
"headline": "Miscellaneous AI Tools",
"tags": ["Ollama", "Whisper", "MCP"]
},
{
"headline": "Collaboration",
"tags": [
"Git",
"GitHub",
"Slack",
"Microsoft Teams",
"Confluence",
"Jira",
"Notion"
]
},
{
"headline": "Agile Methods & Productivity",
"tags": [
"Kanban",
"Scrum",
"Miro",
"OKR",
"GTD",
"Pomodoro",
"DEVONthink",
"Obsidian",
"Zettelkasten Method"
]
},
{
"headline": "Miscellaneous",
"tags": [
"Fish Shell",
"Zsh",
"Bash",
"Neovim",
"Vim",
"Zed",
"Visual Studio Code",
"tmux",
"Mac OS",
"Linux"
]
}
]
},
"languages": {
"headline": "Languages",
"items": [
{
"language": "German",
"level": "native language"
},
{
"language": "English",
"level": "fluently spoken and written"
},
{
"language": "Spanish",
"level": "early CEFR B1"
},
{
"language": "Japanese",
"level": "early CEFR B1, JLPT N3"
}
]
},
"awards": {
"headline": "Awards",
"items": [
"Three time winner of Hackweeks at XING (2023, 2024, 2025)",
"Three times winner of the yearly company-wide innovation award of XING Prototyping Days (2013, 2015, 2017).",
"SEMY Award \u2013 German Search Marketing Award 2015."
]
},
"interests": {
"headline": "Interests & Hobbies"
}
}

381
src/pages/cv.astro
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@@ -7,20 +7,18 @@ import Headline from '../components/Headline.astro';
import ListItem from '../components/ListItem.astro';
import PageTitle from '../components/PageTitle.astro';
import Subheadline from '../components/Subheadline.astro';
import Subsubheadline from '../components/Subsubheadline.astro';
import Text from '../components/Text.astro';
import TextLink from '../components/TextLink.astro';
import UnorderedList from '../components/UnorderedList.astro';
import cv from '../data/cv.json';
import { Content as Intro } from '../text/cv/intro.mdx';
import { Content as InterestsHobbies } from '../text/cv/interests-hobbies.mdx';
import { mapping } from '../mdx-components';
const title = 'CV';
const description =
'The curriculum vitae of Stefan Imhoff, Senior Software Engineer from Hamburg, Germany.';
const title = 'Resume';
const description = 'The resume of Stefan Imhoff, Senior Software Engineer from Hamburg, Germany.';
---
<GridLayout
@@ -33,113 +31,326 @@ const description =
noindex={true}
title={title}
>
<PageTitle grid="wide" innerGrid>Curriculum Vitae</PageTitle>
<PageTitle grid="wide" innerGrid>Resume</PageTitle>
<article class="col-span-full md:col-start-1 md:col-end-9">
<Headline>{cv.summary.headline}</Headline>
<Headline>Professional Summary</Headline>
<Intro components={mapping} />
</article>
<article class="col-span-full md:col-start-10 md:col-end-18">
<Headline>Personal Information</Headline>
<Subheadline class="font-semibold">{cv.personal.name}</Subheadline>
<Text class="!mbe-0">{cv.personal.tagline}</Text>
<TextLink href="https://www.stefanimhoff.de">Website</TextLink> •
<EmailLink data-domain="stefanimhoff" data-name="cv" data-tld="de" icon={false} /> •
<!-- <DownloadLink href="/downloads/cv-stefan-imhoff.zip" text="CV" /> • -->
<DownloadLink href="/downloads/business-card-stefan-imhoff.zip" text="VCard" />
<Subheadline class="font-semibold">Stefan Imhoff</Subheadline>
<Text class="!mbe-0">Senior Software Engineer / Design System Authority</Text>
<ul class="flex list-none flex-wrap items-center gap-2 p-0">
<li><TextLink href="https://www.stefanimhoff.de">Website</TextLink></li>
<li aria-hidden="true">•</li>
<li>
<EmailLink data-domain="stefanimhoff" data-name="cv" data-tld="de" icon={false} />
</li>
<li aria-hidden="true">•</li>
<li><DownloadLink href="/downloads/resume-stefan-imhoff.zip" text="Resume" /></li>
<li aria-hidden="true">•</li>
<li><DownloadLink href="/downloads/business-card-stefan-imhoff.zip" text="VCard" /></li>
</ul>
</article>
<Divider class="col-span-full w-[90] !mbe-0 !mbs-0" />
<article class="col-span-full md:col-start-1 md:col-end-9">
<Headline>{cv.experience.headline}</Headline>
{
cv.experience.items.map((item) => (
<div>
<div class="mbe-10">
<Subheadline class="font-semibold">{item.title}</Subheadline>
<div class="italic mbe-2 no-common-ligatures">{item.duration}</div>
<div class="leading-none">
<strong>{item.company}</strong> / {item.location}
</div>
{item.url && (
<div>
<TextLink href={item.url}>
{item.url.replace(/https?:\/\//, '')}
</TextLink>
</div>
)}
</div>
{item.tasks.length > 0 && (
<UnorderedList>
{item.tasks.map((task) => (
<ListItem>{task}</ListItem>
))}
</UnorderedList>
)}
</div>
))
}
<Headline>Professional Experience</Headline>
<Headline>{cv.education.headline}</Headline>
{
cv.education.items.map((item) => (
<div class="mbe-12">
<Subheadline class="font-semibold">{item.degree}</Subheadline>
<div class="italic mbe-2 no-common-ligatures">{item.duration}</div>
<div>
<div class="mbe-10">
<Subheadline class="font-semibold">Senior Software Engineer</Subheadline>
<div class="flex items-center justify-between mbe-2">
<div class="leading-none">
<strong>{item.school}</strong> / {item.location}
<strong><TextLink href="https://www.xing.com">XING</TextLink></strong>
</div>
{item.url && (
<div>
<TextLink href={item.url}>
{item.url.replace(/https?:\/\//, '')}
</TextLink>
</div>
)}
<div class="italic no-common-ligatures">Remote / Mar. 2020 – Present</div>
</div>
))
}
</div>
<Text>
<em>
Lead Engineer for the XING Design System (XDS), recognized by management as the
<q>Authority for Design System components on Web.</q>
</em>
</Text>
<UnorderedList>
<ListItem>
<strong>Delivered €572,400 in estimated annual savings</strong> (Savings Factor 3.32)
by establishing a centralized component creation workflow, achieving <q
>Top Performer</q
>
ratings (2021, 2022) for high-impact efficiency gains.
</ListItem>
<ListItem>
<strong>Dominated code contributions as the #3 ranked contributor</strong> - in the
Crate core monorepo (<strong>272,000+ LOC</strong> across <strong
>3,500+ files</strong
>), serving as the <strong>sole Web Engineer</strong> during critical 2023 reorganizations
while maintaining 100% delivery output.
</ListItem>
<ListItem>
<strong>Accelerated XING Design System adoption by 278%</strong> (cumulative growth
by Q3 2025), successfully deprecating legacy systems and reducing technical debt through
aggressive migration strategies acknowledged as <q>technically demanding</q> successes.
</ListItem>
<ListItem>
<strong>Spearheaded WCAG 2.2 AA compliance</strong> for the EU Accessibility Act,
conducting comprehensive audits on 50+ core components and implementing semantic standards,
focus management, and high-contrast support.
</ListItem>
<ListItem>
<strong>Recognized as a <q>Role Model for AI Tooling</q></strong> by leadership, integrating
generative AI into daily workflows for debugging and documentation, and winning <strong
>2nd Place in the 2023 AI Hackweek</strong
> for profile image generation.
</ListItem>
<ListItem>
<strong>Engineered a scalable Dark Mode architecture</strong> by creating a dual-mode
SVG token mapping strategy for 400+ illustrations, reducing asset load sizes, and
enabling dynamic theming without code duplication.
</ListItem>
<ListItem>
<strong>Executed the cloud migration</strong> of 10+ internal tools and Chrome extensions
to <strong>GitHub Cloud</strong>, modernizing the CI/CD infrastructure and
ensuring zero downtime.
</ListItem>
<ListItem>
<strong>Lead the technical upgrade to Styled Components</strong> and TypeScript modernization,
refactoring complex types and eliminating “snowflake” implementations to enhance build
performance and developer experience.
</ListItem>
<ListItem>
<strong>Mentored junior engineers and working students</strong> through dedicated
onboarding programs and support sessions, formally praised for being
<q>the most helpful person I know.</q>
</ListItem>
</UnorderedList>
</div>
<div>
<div class="mbe-10">
<Subheadline class="font-semibold">Frontend Engineer</Subheadline>
<div class="flex items-center justify-between mbe-2">
<div class="leading-none">
<strong><TextLink href="https://www.xing.com">XING</TextLink></strong>
</div>
<div class="italic mbe-2 no-common-ligatures">
Hamburg, Germany / Jan. 2011 – Feb. 2020
</div>
</div>
</div>
<Text>
<em
>Key contributor to high-traffic product verticals including Onboarding, SEO,
Mobile, and Jobs. Consistently rated <q>Expectations Clearly Exceeded</q> (2018, 2019).</em
>
</Text>
<div class="flex items-center justify-between mbe-2">
<Subsubheadline>Onboarding Team</Subsubheadline>
<div class="italic mbe-2 no-common-ligatures">2017–2020</div>
</div>
<UnorderedList>
<ListItem>
<strong>Led the “Reactification” of user profiles</strong> and the team's migration
to <strong>TypeScript</strong>, managing the entire frontend stack solo in 2019
and earning a <q>Performance Expectations Clearly Exceeded</q> rating.
</ListItem>
<ListItem>
<strong>Improved user profile completion rates</strong> by engineering a high-performance
responsive widget using React.js and Redux, optimizing the data entry flow for new
users.
</ListItem>
</UnorderedList>
<div class="flex items-center justify-between mbe-2">
<Subsubheadline>SEO Team</Subsubheadline>
<div class="italic mbe-2 no-common-ligatures">2015–2017</div>
</div>
<UnorderedList>
<ListItem>
<strong>Maximized organic traffic and Google rankings</strong> by re-architecting
the Logged-Out User Profile with a focus on “Mobile First” performance and Core Web
Vitals.
</ListItem>
<ListItem>
<strong>Pioneered the first production usage of CSS Grid</strong> at XING during the
relaunch of Public Search, setting the standard for modern layout implementation across
the company.
</ListItem>
</UnorderedList>
<div class="flex items-center justify-between mbe-2">
<Subsubheadline>Mobile Web Team</Subsubheadline>
<div class="italic mbe-2 no-common-ligatures">2013–2014</div>
</div>
<UnorderedList>
<ListItem>
<strong>Enhanced cross-device consistency</strong> by developing a hybrid iPad application
using Backbone.js and migrating the “XING Touch” platform to a flattened, responsive
design system.
</ListItem>
<ListItem>
<strong>Increased user engagement</strong> by programming an interactive horizontal
navigation with complex state-based animations.
</ListItem>
</UnorderedList>
<div class="flex items-center justify-between mbe-2">
<Subsubheadline>Jobs Team</Subsubheadline>
<div class="italic mbe-2 no-common-ligatures">2011–2013</div>
</div>
<UnorderedList>
<ListItem>
<strong>Increased job ad visits by 59%</strong> by conceptualizing and developing
a novel “Context Pagination” feature, significantly boosting user retention.
</ListItem>
<ListItem>
<strong>Launched “XING Projects” (Beta)</strong> by successfully pitching and developing
a Freelancer Marketplace prototype during Innovation Week, which evolved into a dedicated
revenue-generating product.
</ListItem>
</UnorderedList>
</div>
<div>
<div class="mbe-10">
<Subheadline class="font-semibold">Web Designer</Subheadline>
<div class="flex items-center justify-between mbe-2">
<div class="leading-none">
<strong
><TextLink href="https://www.xing.com">Dumrath & Fassnacht</TextLink
></strong
>
</div>
<div class="italic mbe-2 no-common-ligatures">
Hamburg, Germany / Sep. 2005 – Dec. 2010
</div>
</div>
</div>
</div>
<div>
<div class="mbe-10">
<Subheadline class="font-semibold">Media Designer</Subheadline>
<div class="flex items-center justify-between mbe-2">
<div class="leading-none">
<strong
><TextLink href="https://www.xing.com">IGS Development</TextLink
></strong
>
</div>
<div class="italic mbe-2 no-common-ligatures">
Harbke, Germany / Feb. 2002 – Jan. 2005
</div>
</div>
</div>
</div>
<Divider />
<Headline>Education</Headline>
<div class="mbe-12">
<Subheadline class="font-semibold">Computer Scientist</Subheadline>
<div class="flex items-center justify-between mbe-2">
<div class="leading-none">
<strong
><TextLink href="https://www.bib.de">bib International College</TextLink
></strong
>
</div>
<div class="italic mbe-2 no-common-ligatures">
Hanover, Germany / Oct. 1999 – Sept. 2001
</div>
</div>
</div>
</article>
<aside class="col-span-full md:col-start-10 md:col-end-18">
<article>
<Headline>{cv.skills.headline}</Headline>
{
cv.skills.items.map((item) => (
<div>
<Subheadline class="font-semibold">{item.headline}</Subheadline>
<UnorderedList class="!list-none p-0 mbe-10 mbs-5">
{item.tags.map((tag, index) => (
<ListItem class="inline">
{index === item.tags.length - 1
? tag.concat('')
: tag.concat(', ')}
</ListItem>
))}
</UnorderedList>
</div>
))
}
<Headline>Key Skills</Headline>
<div>
<Subheadline class="font-semibold">Core Competencies</Subheadline>
<UnorderedList class="!list-none p-0 mbe-10 mbs-5">
<ListItem>
<strong>Design Systems:</strong> Architecture, Tokenization, Versioning, Governance,
<q>Swiss Precision</q> Quality Assurance.
</ListItem>
<ListItem>
<strong>Accessibility (A11Y):</strong> WCAG 2.2 AA, ARIA Standards, Inclusive
Design, Automated Auditing.
</ListItem>
<ListItem>
<strong>Frontend Architecture:</strong> Monorepo Management, Micro-frontends,
Performance Optimization.
</ListItem>
<ListItem>
<strong>Leadership & Mentoring:</strong> Lateral Leadership, Onboarding Programs,
Technical Writing, Cross-functional Collaboration.
</ListItem>
</UnorderedList>
<Subheadline class="font-semibold">Technologies & Tools</Subheadline>
<UnorderedList class="!list-none p-0 mbe-10 mbs-5">
<ListItem>
<strong>Languages:</strong> TypeScript, JavaScript (ES6+), HTML5, CSS3, PostCSS,
CSS Modules, Sass/SCSS.
</ListItem>
<ListItem>
<strong>Frameworks & Libraries:</strong> React, Redux, Styled Components (v6),
Tailwind CSS, Astro, Node.js.
</ListItem>
<ListItem>
<strong>Testing & Analysis:</strong> Jest, Cypress, Component Scanners, Metabase.
</ListItem>
<ListItem>
<strong>DevOps & AI:</strong> Git, GitHub Actions, Docker, Jenkins, GitHub Copilot,
Claude, OpenCode, Prompt Engineering.
</ListItem>
<ListItem>
<strong>Design:</strong> Figma, Sketch, Adobe Creative Suite, Affinity.
</ListItem>
</UnorderedList>
</div>
</article>
<article>
<Headline>{cv.languages.headline}</Headline>
<Headline>Languages</Headline>
<UnorderedList>
{
cv.languages.items.map((item) => (
<ListItem>
<strong>{item.language}</strong> ({item.level})
</ListItem>
))
}
<ListItem>
<strong>German:</strong> Native
</ListItem>
<ListItem>
<strong>English:</strong> Fluent (Spoken & Written)
</ListItem>
<ListItem>
<strong>Spanish:</strong> Basic (A2/B1)
</ListItem>
<ListItem>
<strong>Japanese:</strong> Basic (JLPT N3 level)
</ListItem>
</UnorderedList>
<article>
<Headline>{cv.awards.headline}</Headline>
<Headline>Awards & Hackathons</Headline>
<UnorderedList>
{cv.awards.items.map((item) => <ListItem>{item}</ListItem>)}
<ListItem
><strong>3x Winner of XING Hackweeks</strong> (2023, 2024, 2025) – <em
>Consistently driving innovation in internal tools and AI.</em
></ListItem
><ListItem
><strong>2nd Place AI Hackweek (2023)</strong> (2013, 2015, 2017) – <em
>Company-wide innovation awards.</em
></ListItem
><ListItem
><strong>SEMY Award</strong> (2015) – <em
>German Search Marketing Award for SEO excellence.</em
></ListItem
>
</UnorderedList>
</article>
</article>
@@ -147,7 +358,7 @@ const description =
<Divider class="col-span-full w-[90] !mbe-0 !mbs-0" />
<article class="col-span-full">
<Headline>{cv.interests.headline}</Headline>
<Headline>Interests & Hobbies</Headline>
<ul class="columns-1 gap-gap md:columns-2">
<InterestsHobbies components={mapping} />
</ul>

2
src/text/cv/intro.mdx
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@@ -1 +1 @@
I’m a Web Developer with more than two decades of experience in creating and building beautiful, user-centric layouts for devices of all sizes on the web. My passion is creating sophisticated, but easy to use UI and remarkable UX. I love bringing simplicity and minimalism to everything I create.
**Senior Software Engineer** and **Design System Authority** with over 15 years of experience at XING, specializing in scalable frontend architecture and inclusive UI/UX. Recognized as a **“Top Performer”** (rated _Exceeds Expectations_ in 4 of the last 6 reviews) for combining a clear technical vision with “Swiss precision” quality. Proven track record of driving significant economic efficiency, delivering **€572k in annual savings** through centralized system adoption. As a top-3 contributor to the core monorepo (**270k+ LOC**), I bridge the gap between design and engineering, spearheading **WCAG 2.2 AA compliance**, acting as a **Role Model for AI adoption**, and accelerating the adoption of the **centralized Design System (XDS)** by **278%**. Passionate about creating minimalistic, high-performance, and accessible web experiences.