Patrick SchaubSchaub Systems
DEEN
Discuss a project
Patrick SchaubSchaub Systems
Discuss a project
DEEN

mail@schaub.systems

For clients, HR and recruiters

Patrick Schaub

Patrick Schaub

Software Architect & Full-Stack Engineer

Freelance profile

Since 2016, I have worked as a freelance software architect, technical lead and full-stack engineer – remotely from Freiburg and on-site when useful.

Self-employed
since 2016
Work mode
Remote & on-site
Languages
German (native), English
Send a project inquiryDownload CV (PDF)

Roles & focus areas

  • Technical Product Owner & software architect
  • Software development in a rail safety context (EN 50716)
  • Senior full-stack engineer (React, Vue.js, Angular, TypeScript, Kotlin, Node.js)
  • Legacy modernization without interrupting operations
  • Containers, CI/CD and delivery (Docker, Kubernetes, GitLab CI/CD)
  • Code reviews, mentoring and architecture reviews

Engagement terms

  • Time-and-materials or fixed-scope contracts, depending on the task
  • Remote; on-site in Germany, Austria and Switzerland as needed
  • Focused projects or longer-term team support
  • Engagements through recruitment agencies are possible

All services

  • 01

    Full-Stack Development

    Web applications, customer portals and internal tools – from the business requirement to integration with your existing systems.

  • 02

    Cloud & Infrastructure

    Ship new versions safely and run your application reliably – with containers, CI/CD and suitable cloud services.

  • 03

    Technical Leadership

    Interim tech lead: taking technical responsibility, preparing and documenting decisions – while contributing to the code.

  • 04

    Legacy Modernization

    Renew established applications step by step instead of rebuilding what works – without interrupting operations.

Tech stack & skills

From client projects and my own software. Which of them make sense depends on your application.

Frontend
  • TypeScript
  • React
  • Vue.js
  • Angular
  • JavaScript
  • Tailwind CSS
  • SCSS
Backend
  • Node.js
  • NestJS
  • Kotlin
  • Quarkus
  • Java
  • PHP
  • Symfony
  • Laravel
  • Rust
  • Go
Data
  • PostgreSQL
  • MySQL
  • Redis
  • SQLite
  • TypeORM
  • Doctrine
Cloud & delivery
  • Docker
  • Kubernetes
  • AWS
  • Google Cloud
  • GitLab CI/CD
  • GitHub Actions
Quality
  • Vitest
  • Jest
  • Cypress
  • Selenium
  • E2E Testing
Ways of working
  • Scrum
  • Kanban
  • Product Ownership
  • Requirements Engineering
  • Mentoring

Project history

Software projects for clients and my own software, most recent first – with period, role, contribution and technologies.

PeriodProjectRoleTech stack
since 2023Digitaler BefehlBVU / DB InfraGO
  • Frontend and backend development with React, TypeScript, Kotlin and Quarkus
  • As Technical Product Owner: architecture decisions, backlog refinement and sprint planning
  • Mentoring and code reviews within the development team
Full-Stack Engineer → Technical Product OwnerReact, TypeScript, Kotlin, Quarkus, PostgreSQL, Docker
2021–2023Web Tooling for Safety SensorsSICK AG
  • Modeled configuration logic as explicit, testable state machines with XState
  • Frontend in Angular, backend services in NestJS
  • Data access through TypeORM and PostgreSQL
Full-Stack EngineerAngular, NestJS, XState, TypeScript, PostgreSQL, Docker
2020Headless Commerce for BELViNiBELViNi / Oetker DigitalFrontend EngineerVue.js, Vue Storefront, Magento 2, Cypress, Docker
12/2018–06/2020Live Marketplace Frontend MigrationChrono24
  • Built new Vue.js components for existing page areas
  • Migrated jQuery-based areas step by step – no big bang
  • Coordination within and across several Scrum teams
Frontend EngineerVue.js, TypeScript, jQuery, SCSS, Webpack
since 2018Print-on-Demand Operations SuitePrint-on-Demand Retailer · Own productProduct Development & OperationsPHP, Symfony, Rust, Tauri, React, Go
2018Magento Frontend for ARTDECOARTDECO Beauty GroupFrontend DeveloperMagento 2, JavaScript, SASS, Gulp
2018White-Label Tariff Calculator for Utilitiesyay! digitalFrontend EngineerVue.js, JavaScript, SASS
2018White-Label EV Management PlatformTEAG AGFull-Stack DeveloperPHP, Symfony, Doctrine, Twig, MySQL
2017–2018Entertainment Portal with Payment & KYCpsmtecSenior Full-Stack DeveloperVue.js, Laravel, Redis, MySQL, AWS, Kubernetes
2017eLearning Modules for International BrandsSony, Lufthansa, Huawei & HUGO BOSSFrontend DeveloperVue.js, JavaScript, SASS, Webpack
2016–2017VW Car-Net Customer PortalVolkswagen AG
  • Further development of the Car-Net web portal on site in Wolfsburg
  • Automated Selenium tests for core portal flows
  • Work within internal Scrum processes
Frontend EngineerAngularJS, JavaScript, Java, REST APIs, Selenium
2016–2018Marketing Website for an Instagram Analytics SaaSsquarelovinFrontend DeveloperHTML5, SCSS, JavaScript, Bootstrap, Gulp
2015–2016B2B Media Platform for Press Agencieskamera24 GmbHFull-Stack DeveloperPHP, Symfony, Node.js, ffmpeg, Docker
2014–2015Symfony Business Apps for Security TechnologySecutech UGFull-Stack DeveloperPHP, Symfony, Doctrine, MySQL
2011–2013IBM Lotus Notes/Domino OperationsS&W GroupSystem AdministratorIBM Domino, Windows Server

Other activities

Industries

  • Rail & mobility
  • Industry & IoT
  • E-commerce
  • Automotive
  • Energy
  • Media & entertainment

Profile as of September 2026 · Patrick Schaub · mail@schaub.systems · schaub.systems/en/freelancer/

Contact

Let's talk about your project.

Send me a short note about the task, the technical context and your planned timeframe. I'll get back to you personally.

Discuss a projectmail@schaub.systems

Patrick Schaub

Software Architect & Full-Stack Engineer

You talk to me directly.