Patrick ScharfBackend & EDI Engineering
Remote from Rhineland-Palatinate, Germany

Patrick Scharf

Backend and EDI that do more than go live - they hold up in operations.

I modernize a business-critical PHP/MySQL system in logistics and connect internal workflows to external platforms through Lobster Data, EDI, and REST APIs.

Selected projects Contact
patrick.scharf / focusoperational
RoleBackend Developer & EDI Engineer
01Source systemERP / TMS / Legacy
02Integration logicMapping / Validation
03Target processAPI / Platform / Operations
PHPLaravelMySQLLobster DataREST APIsDocker
01

Production responsibility in a tour management system used for more than 20 years.

02

EDI and REST across EDIFACT, AS2, SFTP, OFTP, and Lobster Data.

03

Lobster Data credentials and HTB CPTS as verifiable learning evidence.

Selected work

Cases over buzzwords.

Three evidence-based views of my work: live-system modernization, EDI/API integration, and an independent Laravel product.

01 / Lead case

Modernizing a Live Tour Management System

PHPMySQLDockerSession AuthLogistics IT

Maintenance and incremental modernization of a PHP/MySQL tour management system that has been in production for more than 20 years at REBER Logistik.

Role

Application developer since January 2026, working in a three-person development team across production backend and integration paths.

Work

Backend development, database design, session authentication, per-company configuration, and root-cause analysis on live systems.

Operating context

The system handles live logistics data across multiple locations and device types, so changes must preserve day-to-day operations.

Read the case

02

EDI and REST Integration via Lobster Data

Connecting internal logistics workflows to an external carrier platform through EDI protocols and REST APIs.

ResponsibilityProduction-oriented analysis and evolution of integration paths between tour management and external systems.
Read the case

03

Signalwerk: SaaS for Social Lead Monitoring

An independent SaaS product currently in development for social lead monitoring across German-language communities.

StatusActive personal development; no user counts, revenue, or productivity impact is claimed.
Read the case
View all project cases

How I work

From incoming signal to a resilient process.

I treat integration as a traceable chain with explicit validation and failure boundaries - not as a single API call.

01

Understand

Narrow down source systems, business logic, and real failure patterns.

02

Define

Make fields, formats, states, and failure paths explicit.

03

Harden

Test validation, routing, and monitoring before rollout.

04

Operate

Ship small changes with clear rollback and documented handover.

Explore the technical profile

Beyond the stack

Pragmatic in operations. Curious by default.

After retraining as an application developer, I now work across logistics backends and EDI integrations. In parallel, I am building Signalwerk with Laravel 11, Livewire, and Tailwind.

  • Backend Developer & EDI Engineer
  • REBER Logistik since January 2026
  • Application development retraining 2023-2026
  • Lobster Data + HTB CPTS certified
More about my path

From the engine room

Notes on integration, operations, and system evolution.

All articles

Contact

Want to discuss integration, modernization, or my profile?

A short email with context about the role, project, or technical topic is enough to get started.

Get in touch