Matthias Voit-Senior Frontend Developer & Architect

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

Main tasks:

• overall technical 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, reports and role-based functions
• quality assurance through TypeScript, schema validation, tests and structured version control

Impact: creation of a scalable technical foundation for different roles, training formats, languages and data schemas that can be extended 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 based on design system and Figma specifications
• error analysis, monitoring and sustainable quality assurance

Impact: contributions to stabilizing and improving 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-capable multi-portal base structure for an international travel group. The goal was a flexible frontend foundation for different portal variants and brands.

Main tasks:

• planning a scalable frontend and component architecture
• reviewing and technically evaluating provided designs
• aligning necessary design and UX adjustments with business departments
• splitting the application into reusable components
• technical definition and creation of feasible frontend tickets
• setting up the development infrastructure and implementing the new codebase
• developing components and automated tests

Impact: Built a reusable technical foundation for several portal and brand variants 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 areas of finance, insurance, and retirement planning.

Main tasks:

• quick 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
• bug 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 period, new requirements could be implemented independently, existing bugs fixed, and long-standing 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, corporations, and agencies in the concept, architecture, development, and optimization of demanding web platforms.

Main focus areas are 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 where it fits in corresponding product and platform environments.

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

My 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 corporations such as ...

• leading Swiss sports retailer
• major German email and cloud service provider
• southern German luxury car manufacturer
• 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 covered frontend, backend, and database, as well as the design and implementation of new areas for bookers, hoteliers, resellers, corporate customers, and affiliates.

Main tasks:

• Fullstack development and further development of the MICE portal „MARS“
• Implementation of presentation, search, and booking features 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 lead for the redesign and relaunch of the entire hotel.de platform
• Performance-oriented 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 core booking, partner, and data management processes and technically implemented a faster 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.