The role We are looking for a Senior Staff Engineer who combines deep expertise in system architecture with strong hands-on development skills and experience in AI technologies. In this role, you will shape the architectural vision, guide cross-functional teams, and actively contribute to codebases while mentoring the next generation of engineers. You’ll leverage your expertise in Java, Kotlin, Golang, React, and modern AI tools to build scalable, intelligent, and resilient systems. What you’ll do Architect and design large-scale distributed systems and platforms that integrate AI-driven solutions. Stay hands-on with development in Java, Kotlin, Go, and React, delivering production-grade code and prototypes. Evaluate, implement, and optimize AI/ML technologies, frameworks, and tools (e.g., TensorFlow, PyTorch, LLMs, vector databases, ML pipelines). Champion AI integration into product features, developer tooling, and system automation. Provide technical leadership, guidance, and mentorship to engineers at all levels, fostering a culture of excellence and continuous learning. Lead design reviews, code reviews, and technical discussions, ensuring best practices in performance, scalability, and security. Partner with product and business leaders to align technical strategies with organizational goals. Promote modern engineering practices (CI/CD, DevOps, observability, infrastructure-as-code). What you’ll bring 10 years of software engineering experience, with 5 years in system/enterprise architecture. Strong expertise in Java and Kotlin backend systems. Proficiency in Go for distributed and high-performance services. Practical experience with React and modern frontend ecosystems. Hands-on experience with AI/ML frameworks, LLM APIs, or AI infrastructure (cloud AI services, vector search, model deployment). Deep knowledge of cloud-native architectures (AWS, GCP, Azure), Kubernetes, and microservices. Strong foundation in algorithms, data structures, distributed systems, and API design. Track record of mentoring, coaching, and developing junior and mid-level engineers. Excellent communication skills with the ability to influence and align technical decisions across teams. Bonus if you have experience with AI-enhanced developer tools, recommendation engines, and automation systems; familiarity with event-driven architectures (Kafka, Pulsar) and data pipelines; and contributions to open-source AI/ML projects or published applied AI work What we offer Elevate your lifestyle! Join one of Europe's fastest-growing tech powerhouses in a dynamic phase of expansion. Immerse yourself in a diverse global community of 90 nationalities. Enjoy a competitive compensation package that goes beyond the norm, with perks like a HelloFresh- subsidized Pension Scheme, Berlin relocation support, and a Hybrid working model. Elevate your lifestyle with exclusive discounts on your weekly HelloFresh box and office meals. Invest in your growth with a German language learning budget, and access to the HelloFresh Academy. Plus, we've got your well-being covered with mental health support, transportation perks, and working-parent-friendly benefits. From our 24/7 gym access,wellbeing platforms like Headspace and Spill, to sabbatical leave options, HelloFresh is not just a workplace; it's a lifestyle of perks and possibilities!