Principal Engineer, Growth Mega Alliance

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About the role

The Growth Mega Alliance (GMA) builds the platforms that power how HelloFresh acquires, converts, and retains customers across 18 markets and multiple brands, across five pillars: AdTech, Conversions, Payments, Communications, and Customer Value Optimization (CVO). As Principal Engineer, you are the technical visionary for these platforms, defining architectural direction across all five pillars and leading the most consequential cross-cutting initiatives.

What you'll do

• Own GMA's GenAI strategy: identify the highest-leverage opportunities across all five pillars where AI/ML unlocks step-change outcomes.
• Establish agentic development workflows and scale them from early adopters to standard practice.
• Own the long-term technical architecture across GMA's five pillars: real-time personalization, experimentation at scale, AI/ML-driven automation, and cross-pillar data integrity.
• Lead the most complex architectural decisions and drive migrations with large impact.
• Define GMA's experimentation strategy and execution framework to optimize experimentation-based decision-making at scale.
• Coach and grow Staff and Senior Engineers across all five pillars and foster engineering excellence through rigorous design review and strong observability practice.

What you'll need

• Practical, hands-on experience with AI coding agents in production or near-production environments.
• Deep familiarity with at least two of: AdTech / paid media infrastructure, funnel optimization, payment orchestration, CRM and lifecycle communications, or pricing and incentive optimization.
• ~10+ years in software engineering, with ~5+ years at principal level in a high-growth, cloud-native environment.
• Expert in distributed systems, microservices, and event-driven patterns (Kafka). Deep AWS experience. Strong proficiency in Go, Kotlin, Python, or TypeScript.
• Exceptional written communication and ability to influence without authority.
• Fluent English.

Nice to have

• Experience in a multi-market subscription or e-commerce business.
• German language skills.

What they offer

• Impact on GMA's platforms that touch every customer HelloFresh acquires and every euro it collects.
• Real scope with technical direction and consequential architectural ownership.
• Mandate and resources to lead AI-native engineering transformation.
• Direct access to engineering, product, and business leadership.
• Annual learning budget and HelloFresh Academy access.

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