Simon Ellensohn
Freelance Full Stack Developer
Professional Profile
Freelance Full Stack Developer & Technical Lead based in Hamburg with 8+ years of experience architecting scalable SaaS platforms. I specialize in bridging the gap between complex backend architecture and intuitive frontend design, helping teams elevate code quality and deliver high-performance digital products.
Core Focus
Backend & Infrastructure
Specialized in architecting scalable, multi-tenant SaaS solutions using the Laravel ecosystem. Deep experience with complex data modeling (PIM/CRM), search engines (Elasticsearch), and cloud infrastructure (AWS, Docker, Kubernetes).
Frontend Engineering
Engineering complex, reactive user interfaces with Vue.js and Nuxt. Focused on component-driven architecture and maintainability. Proficient in the wider ecosystem (React, Next.js) and mastering utility-first styling with Tailwind CSS.
Technical Strategy & Leadership
Bridging the gap between business requirements and engineering execution. Experienced in leading Scrum teams, defining technical roadmaps, and fostering a culture of quality through automated testing (CI/CD) and mentorship.
Work Experience
GEDISAApr 2024 - Aug 2025
Freelance Full Stack DeveloperRole: Freelance Full Stack DeveloperIndustry: Healthcare SoftwareTeam Size: 2-8Location: Remote
Acted as the primary technical authority in a flat team structure, driving architectural decisions for a multi-tenant healthcare platform serving pharmacies across German federal states. Professionalized the development workflow by introducing automated testing, increasing code coverage from 0% to 80% to safeguard critical financial features. Architected the complex invoicing engine for pharmacy owners, handling strict data segregation and compliance requirements. Mentored fellow developers on the TALL stack (Tailwind, Alpine, Laravel, Livewire), establishing best practices for code quality and maintainability.
Stack: PHP, Laravel, Livewire, Filament, PostgreSQL, Elasticsearch, Tailwind CSS, Alpine.js, Vite, GitHub Actions
PHPLaravelLivewireFilamentPostgreSQLElasticsearchTailwind CSSAlpine.jsViteGitHub Actions
ABOUT YOUOct 2022 - Sep 2023
Lead DeveloperRole: Lead DeveloperIndustry: E-commerce / Fashion TechTeam Size: 6 Developers (Direct Reports)Location: Hamburg, Germany
Led a cross-functional team of 6 engineers, acting as the primary link between Product Management and Engineering to translate business requirements into scalable technical solutions. Defined the technical roadmap and architectural standards, driving the design of major PIM features while ensuring long-term maintainability. Mentored team members through regular code reviews and pair programming, fostering a culture of knowledge sharing and reducing onboarding time. Retained full ownership of production stability, orchestrating complex zero-downtime deployments and optimizing the application infrastructure on Kubernetes.
Stack: PHP, Laravel, Vue.js, MySQL, GitLab CI/CD, Docker, Kubernetes, AWS, Cypress
PHPLaravelVue.jsMySQLGitLab CI/CDDockerKubernetesAWSCypress
ABOUT YOUDec 2019 - Sep 2022
Full Stack DeveloperRole: Full Stack DeveloperIndustry: E-commerce / Fashion TechTeam Size: 6-10Location: Hamburg, Germany
Developed a multi-tenant PIM for managing product lifecycles, handling complex variants, pricing, and assets for international markets. Built critical data tools including bulk imports/exports and a custom permissions system to support large internal product teams. Ensured application stability on AWS, optimizing the Laravel/Vue.js codebase and managing deployments across both EC2 and Kubernetes.
Stack: PHP, Laravel, Vue.js, Vuex / Pinia, MySQL, GitLab CI/CD, Docker, Kubernetes, AWS, Cypress
PHPLaravelVue.jsVuex / PiniaMySQLGitLab CI/CDDockerKubernetesAWSCypress
TOWAAug 2016 - Jul 2019
Full Stack DeveloperRole: Full Stack DeveloperIndustry: Digital AgencyTeam Size: 1-5Location: Bregenz, Austria
Developed the complex Vue.js frontend for a Daimler (Mercedes-Benz) application, collaborating closely with an external backend partner. Independently architected the "Vorarlberg Event Server" a centralized API that aggregates and syndicates event data across the region. Built custom WordPress plugins and extended functionality for premium tourism platforms, including the "Lech Zürs" website.
Stack: PHP, Laravel, WordPress, MySQL, Vue.js, Nuxt, jQuery, Tailwind CSS, Sass, Bitbucket, CircleCI
PHPLaravelWordPressMySQLVue.jsNuxtjQueryTailwind CSSSassBitbucketCircleCI
Hilti GroupNov 2014 - Dec 2015
Web Developer (Internship)Role: Web Developer (Internship)Industry: Construction TechnologyTeam Size: Solo DeveloperLocation: Thüringen, Austria
Developed a digital FIFO board to enforce strict task prioritization, preventing manual overrides by machine operators. Built a custom PHP application that synced directly with SAP to display real-time production schedules on the factory floor. Solely responsible for the project from concept to deployment, replacing manual workflows with a digital solution.
Stack: PHP, MySQL, SAP, HTML5, CSS3, JavaScript
PHPMySQLSAPHTML5CSS3JavaScript
Education
Languages
German
/ Native
English
/ Fluent
Interests
Open Source, Sim-Racing, Bouldering, Cycling, Skiing, Gaming, Coffee, Movies, TV Shows
Open SourceSim-RacingBoulderingCyclingSkiingGamingCoffeeMoviesTV Shows