Web Components Experts in Germany

• Training AI models, evaluating images and text UI/UX, turning the provided data into insights through OpenAI Feather as part of the machine learning workflow

Technologies: OpenAI Feather

Conversion & UX Optimization of a Sales Platform

• Identified the biggest issues across the entire purchase process through a comprehensive UX audit.
• Increased conversion from 0.2% to 25% by developing an end-to-end purchase process, supported by a new information architecture and clearer messaging.
• Accelerated implementation with screen annotations that prevent misunderstandings between design and development.
• Reduced the purchase process drop-off rate from 85% to 15%.

Tools: Figma, MS-Clarity, interaction principles, heuristics

• New development and further development of frontend interfaces for investors, using HTML5, JavaScript, CSS, React, Material UI, and JSTL

• Developed an accessible, responsive website based on Figma designs for a major sports event in compliance with WCAG, BITV and EN 301 549
• Planned and set up the tool stack with Vite, Playwright, Docker and GitLab CI
• Worked on two existing projects (Vue.js & Nuxt), focusing on bug fixing, accessibility audits and developing new features
• Collaborated with Design and QA to consistently implement accessible UI patterns
• Advised on improving existing frontend architectures in terms of accessibility, performance and maintainability

Cross-brand design system

Focus: Analysis of the causes of recurring layout deviations in design system components. The cause was the integration of visual regression tests (BackstopJS) into the build and approval process: deviations were not blocked, and reference images were replaced without approval.

Recommendations for a controlled workflow with mandatory approval and test results as a prerequisite for merging. Contributed to the successor system based on Lit/Web Components.

Technologies: Lit, Web Components, SCSS, Gulp, BackstopJS, GitHub Enterprise, JFrog Artifactory

Key responsibility for the visual and technical frontend relaunch as well as the continued development of the platform architecture.

• Designed and continuously developed the frontend architecture, including a Figma-based Component Library and migration to Vue 3.
• Developed a robust, high-performance, component-based CSS architecture.
• Continuously optimized accessibility, Core Web Vitals, and web performance.
• Worked closely with UX, Product, and Editorial teams on design, product, and implementation decisions.

RESULT:

• WCAG-compliant
• Core Web Vitals issues resolved
• PageSpeed ~90 Desktop / ~80 Mobile

• Development of a browser-based video logger for the automated enrichment of metadata to optimize video search and categorization in the company’s editorial tool. The platform enables editors to efficiently analyze video content and add additional information.
• AI-supported scene recognition for the automatic generation of video shots and time markers
• Automatic transcription and speech analysis for extracting relevant content
• Enhanced metadata management to improve search and archiving functions
• Event-driven architecture in the frontend (Angular, TypeScript)
• Backend integration (.NET) with video streaming and data processing

• Fixing issues in the program logic

• Covering the changes with unit tests

• Analyzing and documenting the data structure of the various applications

• Analyzing and documenting the parameters for configuring the applications

• Analyzing and documenting the measures required to ensure the operation of the applications

• Analyzing and designing the separation of the individual database structures

• Analyzing and estimating the effort for planned extensions

• Analyzing, maintaining and documenting a heterogeneous legacy system landscape for a print media service provider

• Technology: C#, VB.NET, C, Python, Microsoft SQL Server, Visual Studio 2010, JetBrains Rider, Visual Studio Code, arc42, Draw.io, Jira, GitLab

• Implementation of new features in backend and frontend in collaboration with the product team.
• Stack: Typescript, Vue 3, Node/Koa, TypeORM, GraphQL/Apollo, PostgreSQL, Github Actions, Weclapp

• Development of a Component Library based on a Design System for several international brands such as Alpecin, Karex, Linola and Plantur 39
• Integration of Headless CMS, PIM and Commerce solutions
• UI/UX development
• Prototype development
• MVP development
• API design and development
• SaaS development (Whitelabel/Multi-tenent)
• Headless CMS integration
• Design Systems Digital Signage
• Internationalization (i18n)
• Javascript
• Component Library
• Tailwind CSS
• Storybook
• HTML
• Vue 3
• Storyblok
• Github Actions
• SEO
• i18n Theming
• React

• Provide the Price Listing Service team with prices for all cars and vans in different markets
• Adapt market-specific requirements such as taxes, government subsidies, campaigns
• Import and synchronize new prices for all new and existing cars and store them in the Redis datastore
• Support our product and on-call duty
• Daily business, development of new features, bug fixing
• Pair programming, code review, mob programming
• Develop POCs for new ideas
• Maintain and extend the backend
• DevOps tasks
• Run Kubernetes updates
• Adjust and further develop Kubernetes resources
• Develop and adapt Helm charts
• Adapt and update ArgoCD
• Maintain, adapt, and improve CI/CD

• Worked on the Salesforce configuration such as custom objects, complex formula fields, validation rules, email templates (Classic & Lightning), reports and dashboards
• Designed and deployed custom tabs, approval processes and auto-response rules for automating business logic
• Customized Salesforce org based on the user needs
• Gathered customer requirements from business user teams across sales, marketing and customer service
• Automated business logic using flows and Apex triggers
• Developed Visualforce pages and Lightning web components
• Maintained data quality by identifying, deleting or merging duplicate records, cleansing and updating inaccurate data

Project: Tax Exemption Order Application

The client has an existing application for creating and maintaining tax exemption orders for end customers; design and implementation of a comparable application for internal employees.

• Design and implementation of microservices and the UI for the business area "tax exemption orders" using Domain Driven Design as well as Spring Boot and Angular.
• Implementation of reactive, non-reactive, and asynchronous APIs (Spring REST, WebFlux, GraphQL).
• Development of the Angular application, including state management using Signals, RxJS Observables, and subscriptions.
• Securing the API and the application using OAuth2, JWT, and OpenID Connect.
• Configuration and setup of CI/CD pipelines with Jenkins.
• Collaboration with cross-functional teams and conducting code reviews.

Environment: Java, Spring Boot, Angular 18 & 19 (standalone, signals), RxJs, Bootstrap CSS, Vitesting, OpenShift, Istio, microservices, Kafka, Dynatrace, Jenkins, GitLab, Graylog, Sonar, Oauth2, OracleDB

• Database design with Oracle DB, JPA and Flyway considering high performance requirements
• Analysis of multiple architecture drafts and identification of technical risks
• Design and implementation of various interfaces and integrations, especially REST APIs and Kafka topics
• Setup of Elasticsearch for monitoring and analyzing log data
• Establishment of an iterative work approach in the project team facing complex business requirements