Matthias Voit-Senior Frontend Developer & Architect

Concept, architecture, and end-to-end development of a modular, multilingual web application for sensor training in the premium food and beverage sector.

Main tasks:

• technical overall architecture and setup of the development infrastructure
• database design and relational data modeling with PostgreSQL and Supabase
• implementation of authentication, authorization, and role-based permissions
• Row-Level Security, soft-delete mechanisms, and traceable data storage
• responsive, multilingual user interfaces with dynamic forms and workflows
• QR-based data groups, evaluations, and role-based functions
• quality assurance through TypeScript, schema validation, tests, and structured version control

Impact: Building a scalable technical foundation for different roles, training formats, languages, and data schemas that can be expanded in the future.

Technologies: React, Next.js, TypeScript, Tailwind CSS, Supabase, PostgreSQL, Storybook, Figma, Vitest, TestCafe, GitHub, i18n.

Long-term support for a large Swiss e-commerce platform as a Performance Engineer and Senior Frontend Developer in internationally distributed, English-speaking teams.

Main tasks:

• analysis and optimization of existing frontend and code structures
• development of new features and reusable frontend components
• continuous analysis of PageSpeed and Core Web Vitals
• performance assessment of newly developed features
• technical SEO optimizations and structured data
• implementation according to design system and Figma guidelines
• error analysis, monitoring, and sustainable quality assurance

Impact: Contributions to the stabilization and improvement of load times, Core Web Vitals, and the technical SEO foundation of the e-commerce platform.

Technologies: Vue 2, Nuxt 2, TypeScript, Vuex, Tailwind CSS, Webpack, Jest, Robot Framework, Storybook, Node.js, Redis, SAP Commerce/Hybris, Jenkins, Sentry, SonarQube, SpeedCurve, Figma, Jira, Confluence, Scrum, Kanban.

Architecture and implementation of a white-label-ready multi-portal base structure for an international travel group. The goal was a flexible frontend base that could be adapted for different portal versions and brands.

Main tasks:

• Planning a scalable frontend and component architecture
• Reviewing and technically evaluating provided designs
• Aligning necessary design and UX changes with business teams
• Splitting the application into reusable components
• Technical definition and creation of actionable frontend tickets
• Setting up the development infrastructure and implementing the new codebase
• Developing components and automated tests

Impact: Built a reusable technical foundation for multiple portal and brand versions with better maintainability and a consistent UI structure.

Technologies: Vue 2, Nuxt 2, TypeScript, Vuex, Webpack, Jest, TestCafe, Styleguidist, Figma, Bitbucket, Jenkins, Jira, Confluence, Scrum.

Frontend development for the Cologne-based frontend agency Sevenval on two customer, consulting, and comparison portals in the fields of finance, insurance, and retirement planning.

Main tasks:

• Fast and fully independent onboarding into existing codebases, project-specific technologies and XSL
• Analysis and optimization of existing code structures
• Implementing new frontend requirements and features
• Error analysis and bug fixing in existing portal applications
• Processing and displaying structured data from XML-, REST- and SOAP-based systems
• Working in an agile Scrum project

Impact: After a short onboarding phase, new requirements could be implemented independently, existing bugs fixed, and historically grown code structures improved in a targeted way.

Technologies: JavaScript, HTML5, CSS3, SCSS, XML, XSL, REST, SOAP, Rollup, Git, Redmine, Scrum.

Operational work as Senior Frontend Developer, Technical Web Architect and Managing Director of solleo IT GmbH. Supporting companies, enterprise groups and agencies in the design, architecture, development and optimization of demanding web platforms.

Focus areas include Vue, Nuxt, TypeScript, component-based frontend architectures, design systems, platform modernization, Core Web Vitals, web performance and technical SEO. React and Next.js are also used in matching product and platform environments.

Besides hands-on development, I take on technical analysis, architecture decisions, requirement clarification, code reviews, quality assurance, documentation, and alignment between business, UX, SEO and development.

Project experience is especially in e-commerce, automotive, tourism, internet services, finance and insurance, as well as in international, English-speaking development environments.

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Worked for enterprise groups such as ...

• leading Swiss sports retailer
• large German email and cloud service provider
• luxury car manufacturers from southern Germany
• international travel group
• hotel booking system
• insurance and finance platform

After an earlier role in Data Quality, I moved internally into software development in 2008.

Fullstack development and technical subproject responsibility for a large hotel reservation and booking platform. The work included frontend, backend, and database, as well as the design and implementation of new areas for bookers, hoteliers, intermediaries, corporate customers, and affiliates.

Main tasks:

• Fullstack development and further development of the MICE portal "MARS"
• Implementation of presentation, search, and booking functions for different user roles
• Development of internal Windows tools and services for capturing, migrating, managing, and correcting rate and master data
• Refactoring and performance optimization of existing SQL queries
• Design and further development of affiliate management
• Development of a crawler to identify and analyze partner integrations
• Technical subproject leadership during the redesign and relaunch of the entire hotel.de platform
• Performance-focused implementation of the new frontend
• Development of the HotelCenter module for analyzing and optimizing rate structures
• Quality assurance through unit tests, refactoring, and structured development processes

Impact: Further developed key booking, partner, and data management processes and technically implemented a more performant and modernized platform architecture.

Technologies: C#, ASP.NET, WPF, JavaScript, jQuery, AJAX, XML, XSL, REST, MSSQL, SQL, MVC3, MVVM, Unit Tests, Jira, Scrum, Visual Studio.