# Mark Topper Diderichsen

## Senior Backend Developer | AI & Platforms

Backend developer and technical lead with more than 12 years of experience building and operating web products. I work mainly with PHP and Laravel across architecture, APIs, cloud infrastructure, DevOps, security, and full-stack delivery. I use AI daily for research, implementation, testing, code review, and automation across work in GxP compliance, enterprise commerce, consumer services, SaaS, and open source.

## Skills

PHP, Laravel, Backend Architecture, Technical Leadership, AI-Assisted Engineering, LLM Integration, Agentic Workflows, CI/CD, Application Security, Docker, AWS, Automated Testing

## Experience

### Senior Software Developer - Eupry

Jan 2026 - Present

Build and operate backend product capabilities for a regulated thermal-compliance platform.

- Take responsibility for DevOps and application and infrastructure security, including CI/CD, deployments, observability, access control, and dependency maintenance.

### Lead Full Stack Developer - ABOUT YOU / SCAYLE Commerce Engine

Aug 2022 - Dec 2025

Led full-stack commerce platform delivery through the ABOUT YOU-to-SCAYLE transition.

- Continued in the same lead role as ABOUT YOU's B2B commerce technology unit became SCAYLE GmbH.
- Led full-stack platform work across architecture, delivery, code quality, and performance.
- As my scope grew, I took ownership of DevOps for the projects I led, including CI/CD, deployments, observability, production reliability, and application and infrastructure security.

### Software Developer - Novasa Interactive ApS

Mar 2014 - 2022

Delivered backend systems and production infrastructure for consumer, commerce, and SaaS products.

- Designed and managed server infrastructure supporting 99.99% availability, with monitoring and troubleshooting for business-critical services.

## Selected Projects

### Eupry Thermal-Compliance Platform

Develop and maintain backend and product capabilities for Eupry's GxP thermal-compliance platform, with responsibility spanning architecture, DevOps, production reliability, and application and infrastructure security.

- Build backend and product capabilities for monitoring, calibration, mapping, and validation workflows
- Own DevOps responsibilities including CI/CD, deployments, observability, and dependency maintenance
- Take responsibility for application and infrastructure security
- Support production reliability for a regulated-industry platform

### ABOUT YOU / SCAYLE Commerce Platform

Led full-stack development on an enterprise commerce platform used by brands and retailers to run complex online stores. Continued in the same organization as ABOUT YOU's B2B technology unit became SCAYLE GmbH, while guiding architecture, delivery, platform quality, and collaboration across product and engineering work.

- Led delivery across full-stack platform capabilities
- Made architectural decisions with long-term operability in mind
- Improved engineering quality through automated testing and code review
- Owned DevOps for the projects I led, covering CI/CD, deployments, observability, and production reliability
- Handled application and infrastructure security as part of architecture and delivery
- Helped the team continue smoothly through the ABOUT YOU-to-SCAYLE restructuring

### Rema1000 ViGo

Built backend infrastructure, service APIs, and customer-support tooling for REMA 1000 with Vigo, a nationwide marketplace connecting grocery customers with local shoppers. The platform served the webshop, mobile applications, and partners, so correctness and predictable performance mattered at every step of the order and delivery flow.

- Built service APIs used by the webshop, mobile apps, and partners
- Implemented in-store purchase validation to reduce shopper fraud
- Automated order workflows that would otherwise require manual handling
- Helped deliver a product that became a popular grocery-shopping service in Denmark