Mathis Dudler - Senior Web/Frontend Developer

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Bielefeld, Germany

Experience

Jan 2025 - Mar 2025

3 months

Senior Web/Frontend Developer

KemCom GmbH

Modernized the homepage of a luxury residential building for a better user experience and contemporary design
Developed and implemented the website and modules using current web technologies
Optimized SEO to improve search engine visibility
Created a modern and professional look that strengthens the building's image
Increased content maintenance efficiency by using a CMS
Technologies: HTML5, HTML, CSS3, CSS, JavaScript, Umbraco, C#, .NET

Apr 2024 - Aug 2024

5 months

Fullstack Developer

Getslash GmbH

Developed a new white-label software for booking internet plans as a seamless integration into the existing booking process
Built a responsive web app in Vue.js using pnpm workspaces
Integrated unit and integration tests with Vitest and added E2E tests in Cypress
Implemented the headless CMS Directus with a PostgreSQL database
Set up a GitLab CI/CD pipeline for automated quality checks and packaging
Developed REST and GraphQL APIs
Decided to discontinue the old technology stack and begin transitioning to the new technology direction
Technologies: Vue.js, TypeScript, JavaScript, HTML5, HTML, CSS, Tailwind, Vitest, Cypress, PrimeVue, Directus, PostgreSQL, Node.js, GitLab CI/CD, REST, pnpm, Vite, Git, Confluence, Jira

Feb 2024 - Dec 2024

11 months

Senior Web/Frontend Developer

Getslash GmbH

Created a flagship product as a showcase for the frontend's future-ready technology direction
Updated a legacy Angular web app to the latest technology standards
Introduced tactical Domain-Driven Design in an NX-based monorepo
Ensured code quality with automated unit, integration, snapshot, and E2E tests
Provided DevOps coaching to improve the release process and best practices
Successfully launched to multiple clients and added it to the portfolio
The project served as a blueprint for the company's further technology direction
Reduced disruptions to almost zero through 100% unit test coverage, comprehensive E2E test coverage, and fully automated releases
Technologies: Angular, TypeScript, JavaScript, HTML5, HTML, SCSS, CSS, Jest, Cypress, NX, RxJS, Storybook, Node.js, GitLab CI/CD, REST, npm, yarn, ESLint, Webpack, Babel, semantic-release, Git, Confluence, Jira

Feb 2024 - Dec 2024

11 months

Senior Web/Frontend Developer

Getslash GmbH

Further developed the existing product and modernized it using current technologies and best practices
Planned and implemented a strategy to use Angular version >12 while maintaining ES5 compatibility
Developed a responsive web app in Angular for iTV, digital signage, and mobile devices
Updated the legacy app to defined best practices and technologies
Transpiled, packaged, and optimized build artifacts for ES5 devices and browsers
Improved GitLab CI/CD build pipeline performance through parallelization, caching, and build optimizations
Successfully updated to Angular 19 with a custom build process to restore ES5 compatibility
Launched multiple complex features for several clients
Optimized the CI/CD pipeline, reducing deployment time by 50%
Technologies: Angular, TypeScript, JavaScript, HTML5, HTML, SCSS, CSS, Jest, Cypress, NX, NgRx, RxJS, Rollup, Babel, Terser, esbuild, Vite, PostCSS, Storybook, Node.js, GitLab CI/CD, REST, npm, yarn, ESLint, Webpack, semantic-release, Bootstrap, Git, Confluence, Jira

Feb 2024 - Dec 2024

11 months

Senior Web/Frontend Developer

Getslash GmbH

Provided design tokens and their usage in the products to customize the white-label software
Implemented this by publishing an npm package based on Figma Tokens Studio
Fully automated and quality-assured versioning, documentation, and packaging of the design tokens in releases
Technologies: Node.js, Style Dictionary, Jest, semantic-release, GitLab CI/CD, husky, Git, git hooks, Figma, npm, yarn

Apr 2023 - Dec 2023

9 months

Research Associate

Technische Hochschule OWL

Researching, implementing, and optimizing AI and ML algorithms to generate and analyze synthetic data
Implementing (Conditional) Variational Autoencoders and Generative Adversarial Networks using TensorFlow, PyTorch, and scikit-learn
Improving the accuracy of machine learning models through data-driven optimizations
Creating research reports and data visualizations
Technologies: Python, TensorFlow, Keras, PyTorch, scikit-learn, pandas, seaborn, Matplotlib, Plotly

Jan 2022 - Feb 2024

2 years 2 months

Senior Web/Frontend Developer

RTL Technology GmbH

Developed the RTL+ music streaming app with a modern frontend architecture for over 4 million subscribers
Designed the architecture and implemented it using Angular in an NX-based monorepo
Supported the development of microservices in Node.js, managed Docker image deployments, and oversaw Kubernetes clusters
Integrated extensive test coverage including unit, integration, snapshot, and E2E tests
Optimized for server-side rendering (SSR) and search engine optimization (SEO)
Provided DevOps coaching and optimized GitLab CI/CD pipelines for on-demand releases
Introduced clean code guidelines and collective code ownership
Successfully launched the platform with 100% unit and comprehensive E2E test coverage
Seamlessly handed off to the internal development team for long-term maintenance
Technologies: Angular, TypeScript, JavaScript, HTML5, HTML, SCSS, CSS, Node.js, Jest, Cypress, NX, GraphQL, SSR, SEO, Storybook, Strapi, Kafka, Stencil, React, GitLab CI/CD, Docker, Kubernetes, npm, yarn, ESLint, Webpack, Git, Confluence, Jira, Agile, Scrum, SAFe

May 2021 - Nov 2021

7 months

Fullstack Developer

My Calorie Tracker

Developed a new multi-platform calorie tracking app
Implemented a Progressive Web App using Vue.js, Vuex, Vue Router, TypeScript, HTML5, and SCSS
Ensured quality with unit tests in Jest and Jasmine, and E2E tests in Playwright
Integrated Firebase including authentication, hosting, and Cloud Firestore
Defined a GitLab CI/CD pipeline for linting, building, testing, and automated deployment
Successfully completed the project and continued improvements
Technologies: Vue.js, TypeScript, JavaScript, HTML5, HTML, SCSS, CSS, Vitest, Jest, Jasmine, Playwright, Firebase, NoSQL, PWA, GitLab CI/CD, npm, Git

Jan 2020 - Dec 2021

2 years

Technical Product Owner

Diamant Software GmbH

Launched the new Diamant/4 product generation and replaced Internet Explorer 11 with a pure web client
Led an agile development team using Scrum within the SAFe framework
Defined, prioritized, and managed the team backlog including epics, features, and user stories
Developed and specified architecture requirements, especially for microfrontends
Introduced Lean UX, collaborative UX design, and design sprints
Collected user feedback, handled stakeholder management, and ran workshops using methods like MVP, Pareto principle, user story mapping, and story slicing
Successfully launched and integrated as an OEM solution with partners
Significantly improved team performance by preparing technological concepts
Technologies: Scrum, SAFe, Kanban, User Stories, Microfrontends, Architecture, UI/UX, Design Sprints, User Story Mapping

Mar 2019 - Feb 2020

1 year

Web/Frontend Developer

Diamant Software GmbH

Unified multiple clients into a single web client and delivered a company-wide design system
Managed requirements, implemented, and integrated architecture demands in Angular
Defined and implemented new interfaces together with the team, stakeholders, and architects
Developed automated tests based on the Agile Test Matrix and ATDD
Configured Azure Pipelines to promote a collective code ownership mindset and clean code guidelines
Enabled autonomous and decentralized development through micro-frontend architecture and a component library
Technologies: Angular, TypeScript, JavaScript, HTML5, HTML, Less, CSS, Node.js, Jest, Jasmine, Karma, RxJS, Kendo UI, SonarQube, ESLint, Swagger, OpenAPI, Azure Pipelines, Azure DevOps Server, npm, yarn, Webpack, ng-packagr, semantic-release, git hooks, Git, Scrum, Agile, SAFe, UI/UX

Feb 2018 - Feb 2019

1 year 1 month

Web/Frontend Developer

Volkswagen Financial Services

New development of the used car platform to reduce server load and improve performance
Implemented a reactive web app with Angular and NgRx state management
Integrated unit and integration tests
Connected OData and SOAP APIs and implemented WebSocket connections for live updates
Significant performance improvement and better user experience
Increased revenue through reliable availability and performance
Technologies: Angular, TypeScript, JavaScript, HTML5, HTML, SCSS, CSS, Node.js, NgRx, RxJS, Jasmine, Karma, OData, SOAP API, npm, WebSockets, RabbitMQ, STOMP, Azure, Git, Jira, Confluence

Oct 2016 - Jan 2018

1 year 4 months

Fullstack Developer

Wortmann Group

Created a cross-platform app for communication between sales, marketing, and sales staff
Developed responsive web apps with OpenUI5
Built native Android and iOS apps with Apache Cordova
Developed RESTful and OData APIs and trained internal IT with second-level support
Stored data in a database with automatic schema generation
Successfully launched and handed over to the internal development team
Technologies: OpenUI5, JavaScript, Java, Maven, Cordova, Firebase, Tomcat, JAX-RS, Olingo, MySQL, Hibernate, Git, Confluence, Jira, UI/UX

Jun 2016 - Sep 2016

4 months

Web/Frontend Developer

EDEKA

Enhanced and fixed bugs in the visit reports app for faster and easier store evaluations
Developed a responsive web app with SAPUI5
Extended the SAP Fiori Launchpad with customer-specific processes
Integrated new features like offline functionality to boost field staff productivity
Technologies: SAPUI5, SAP Fiori, JavaScript, Git, Jira, Confluence

Summary

Since 2016 experience in developing scalable web apps and modern frontend technologies (Angular, Vue.js, TypeScript).

Specialized in future-proof architectures, design systems and automated CI/CD pipelines.

Experienced in leading agile teams (Scrum, SAFe) and coaching on clean code and best practices.

Passionate about innovative technologies and solutions that meet both developer and user needs.

Skills

Javascript/typescript: Angular, Vue.js, Node.js, Nx, Vite, Webpack, Babel, Esbuild, Rollup, Terser
Python: Tensorflow, Pytorch, Scikit-learn, Pandas, Matplotlib, Seaborn, Numpy
Testing: Jest, Cypress, Vitest, Playwright, Jasmine, Karma
State Management: Rxjs, Ngrx, Vuex, Pinia
Style Sheets: Html5, Css3, Scss, Less, Postcss
Protocols: Graphql, Rest, Odata, Soap
Devops: Gitlab Ci/cd, Azure Pipelines, Docker, Kubernetes