Freelancer profile translated to English.

Description

Tech Lead, Senior Full-Stack Engineer, and Technical Project Manager with a focus on PHP/Laravel, Cloud Migrations, CI/CD, and stable software delivery. Strong in projects requiring modernization of legacy systems, securing deployments, clarifying technical dependencies, and bridging stakeholders across business, product, engineering, and operations.

Hands-on in architecture, backend, frontend, infrastructure, and operations, complemented by automation, API integration, and LLM/agent workflows for controlled development, operational, and internal tooling processes.

Collaboration is project-based through my Homo Technologicus GmbH, with clearly defined scope, independent responsibility, and professional contract and invoicing processes.

Industry field of expertise

Languages

German
Native or bilingual
English
Fluent

Workplace preferences

Can work on-site

Cochem (up to 50km), Koblenz (up to 50km)

congstar GmbH
Requirements Engineering & Delivery Support in the Telecommunications Environment - IT Analyst
TELECOMMUNICATIONS
November 2025 - May 2026 (6 months)
Köln, Germany
Scope:Requirements Engineering, Stakeholder Management, Interface Management, Backlog Refinement, Incident and Problem Support

Context:Enterprise-level telecommunications context with a high degree of coordination between business, product, engineering, and operations.

Captured, structured, and transformed requirements into actionable specifications with acceptance criteria.
Made dependencies, risks, and edge cases visible early to enhance implementation quality and traceability.
Supported stakeholder coordination between business, product, engineering, and operations.
Fed back operational feedback into refinement and prioritization.
Assisted with incident and problem analyses, including impact assessment, status communication, and follow-up.

Impact:Requirements became more traceable, implementation risks were identified earlier, and operational feedback was systematically incorporated into refinement and prioritization.
Incident Management Stakeholder Management Requirements Engineering Backlog Refinement IT Project Management
Losys GmbH
Cloud Migration & Modernization of a Construction/Reference Platform, Technical Project Lead & Sr. Developer
CIVIL ENGINEERING
July 2024 - August 2025 (1 year and 1 month)
Opfikon, Switzerland
Stack:PHP 8.x, Laravel, JavaScript, MySQL, Cloud, AWS Vapor, S3, RDS, CloudFront, GitHub, CI/CD, Linux, Sentry, SEQ

Context:Modernization of a legacy, media-intensive construction/reference platform with a focus on cloud migration, delivery standards, observability, and performance.

Designed and implemented cloud migration to AWS using Laravel Vapor, including a production-like local environment and controlled cutover.
Built a GitHub-to-Vapor pipeline, reduced deployment time to under one minute, and documented a rollback path via commit revert and re-deploy.
Defined delivery standards for branching, reviews, and deployment guards, and supported requirements management and visual quality assurance.
Introduced Sentry and SEQ for error tracking, structured logs, alerting, and retention.
Implemented CloudFront/caching strategies, Vapor workload tuning, and query/relation optimizations.

Impact:Deployments were reduced to under one minute, errors and logs in the live system became more traceable, and the platform has been stabilized at approximately 99.9% uptime since the new pipeline went live.
PHP AWS Laravel Vapor CI/CD AWS S3
ARCUS Kliniken
Technical Takeover, Modernization & Migration of the Web Presence - Tech Lead Web Migration
HEALTH AND WELLNESS
April 2024 - June 2026 (2 years and 2 months)
Pforzheim, Germany
Stack:TYPO3 12, PHP 8, JavaScript, MySQL, GitLab, Jenkins, Linux/SSH

Context:Migration and technical takeover of a reputation-critical clinic website with high SEO, operational, and stakeholder relevance.

Assumed technical responsibility from external service providers and coordinated directly with clinic management and the SEO agency.
Upgraded to PHP 8 and TYPO3 12, including refactoring of custom plugins.
Migrated a previous WordPress blog with categories, tags, and SEO metadata into the TYPO3 structure.
Set up staging, QA processes, and GitLab/Jenkins deployment, including rollback via Git revert.
Stabilized hosting, backup, and server setup, and supported performance, SEO, and usability topics.

Impact:The website received a modernized technical foundation, controllable release structures, and more robust operational processes for clinic operations.
TYPO3 PHP Migration MySQL CI/CD