Work Experience

- current

Director Experience Engineering

Publicis Sapient, Germany

Director of Experience Engineering with 25+ years in leading global teams and building scalable, user-focused digital products. Skilled in responsive design, accessibility, SEO, and performance using HTML5, CSS, JavaScript, Node, and modern platforms. Experienced in modular architectures, Agile delivery, and global collaboration. Strong leadership in design systems, tooling, and AI-assisted workflows, driving innovation, consistency, and engineering excellence across international projects.

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Senior Frontend Developer

Syzygy Deutschland GmbH, Bad Homburg

Leading several key projects as lead FE developer for clients such as Daimler, Fleurop, and o2

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Senior Web Developer

BBDO-Interone, Wiesbaden

Leading several key projects as lead FE developer for clients such as Fraport, Nestle

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Senior Web Developer

PopNet Communication, Frankfurt

Leading several key projects as lead FE developer for clients such as Fraport, Nestle

Certificates

Certified SAFe® 6 Scrum Master

Scaled Agile Inc

A Certified SAFe® 6 Scrum Master is a SAFe® Scrum Master professional responsible for integrating Scrum practices into an organization. Key areas of competency include using Scrum and Kanban to facilitate team events, supporting program execution, and coaching Agile teams.

Certified SAFe® 6 Agilist

Scaled Agile Inc

A Certified SAFe® 6 Agilist (SA) is a SAFe Enterprise leadership professional who leads and sustains the Lean-Agile transformation. Key areas of competency include the application of Lean-Agile mindset and principles, the release of value through Agile Release Trains (ARTs), and building an Agile portfolio to align strategy and execution.

Personal skills

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Publications

Supercharge GitHub Copilot's Agent Mode

Cases by Holger Hellinger

Learn how to extend GitHub Copilot in VS Code using MCP servers. This guide shows how to connect tools like Jira or NX, write custom instructions, and create smarter developer workflows with agent mode.

Publications

Case Study - B2B Electrical Distribution Company

Cases by Holger Hellinger

Publicis Sapient enhanced a B2B Electrical Distribution Company's React-based Monorepo system using a Figma-driven design system. This improved accessibility by 20-30%, introduced a native CSS library for React, and ensured cross-platform consistency, streamlining component usage and setting new accessibility standards in e-commerce.

XT Summit 2022 - Cognitive Disabilities and how we can deal with them

Homeoffice - YouTube

XT Summit 2022: Join Holger and Herb for a forward-thinking discussion on Cognitive Disabilities. Explore their early insights into AI, just before Chat GPT, and the role of enhancing experiences for people with disabilities, long before it became mainstream.

Gurugram, India - Web Components 2019

Gurugram, India - YouTube

In 2019, I delivered an inspiring talk in Gurugram, India, about the future of web components. Discover how I advocated for this technology as the way forward in web development, influencing and convincing attendees of its potential.

My Performance Media Talk (Including Brave and BAT)

Bangalore, India - YouTube

Discover the future of performance media in this insightful talk on Brave browser and BAT's impact. Learn how these innovations are reshaping digital advertising, user engagement, and privacy-focused marketing strategies, and what lies ahead.

Education

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Student

Zahnmedizin - Universität Mainz

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Student

Betriebswirtschaft - Hochschule Mannheim

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Student

Technisches Gymnasium Heilbronn
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