Senior AI Product Engineer (m/f/d)

Voyfai; Berlin; On-site; EUR 90,000 - 150,000; Full time

Benefits offered by this job

Competitive salary and equity options

30 days of PTO

Flexible working arrangements

Monthly mobility budget via Navit

Regular team events and offsites

Job summary

A fast-growing European startup is seeking a Senior AI Engineer in Berlin to design and deploy LLM-powered systems. This hands-on role requires collaboration with key stakeholders to turn complex problems into scalable AI solutions. The ideal candidate has strong Python skills, several years of experience in AI and GenAI, and a pragmatic mindset. The position offers competitive salary, equity options, flexible arrangements, and a dynamic work environment.

Qualifications

• Several years of experience as an AI Engineer, focusing on LLMs and GenAI.
• Strong understanding of prompting techniques and evaluation strategies.
• Experience building production-grade GenAI systems.

Responsibilities

• Design, develop and deploy LLM-powered and GenAI features.
• Integrate foundation models into production systems.
• Collaborate with Product Managers to translate business problems into AI solutions.
• Collaborate with Product Managers and Engineers to translate business problems into scalable AI solutions.
• Own production AI systems, including monitoring, guardrails and feedback loops.
• Contribute to architectural decisions around AI platforms, retrieval systems, vector databases and LLMOps tooling.
• Raise the technical bar through code quality, documentation and mentoring.

Skills

Experience as an AI Engineer

Strong understanding of LLM behavior

Solid Python skills

Experience with GenAI frameworks

Deploying AI systems in cloud environments

Understanding of MLOps practices

Ability to communicate complex AI concepts

Tools

PyTorch

LangChain

LlamaIndex

Job description

Join Voyfai, a fast-growing Series A startup shaping the future of logistics and technology across Europe.

Headquartered in Berlin, we operate at the center of a broader group of companies active across several European markets.

This is a unique opportunity to take ownership from day one, drive meaningful impact and grow within a dynamic, fast-paced environment. Whether you're shaping processes, building strategies or leading initiatives, your contributions will directly influence the success of Voyfai and the companies we support. If you're passionate about building from scratch and excited to be part of a company on the rise, we'd love to hear from you.

Your Role

As a Senior AI Engineer at Voyfai, you will play a key role in designing, building and scaling LLM-powered and applied GenAI systems that power our core products. You will work closely with Product, Engineering and Business stakeholders to turn complex, unstructured problems into robust, production-ready AI solutions.

This role is hands-on and impact-driven. You will be expected to take end-to-end ownership, from use case discovery and prompt or model design to deployment, monitoring and continuous improvement in production, with a strong focus on real-world reliability and business impact.

Key Responsibilities

• Design, develop and deploy LLM-powered and GenAI features for real-world, high-impact use cases
• Build and own end-to-end GenAI pipelines, including prompt design, model selection or fine-tuning, evaluation and deployment
• Integrate foundation models into production systems with a strong focus on latency, cost, reliability and quality
• Collaborate closely with Product Managers and Engineers to translate ambiguous business problems into scalable AI solutions
• Own production AI systems, including monitoring, evaluation, guardrails and feedback loops
• Contribute to architectural decisions around AI platforms, retrieval systems, vector databases and LLMOps tooling
• Raise the technical bar through code quality, documentation and mentoring

What You Bring

• Several years of experience as an AI Engineer, Machine Learning Engineer or similar role, with hands-on focus on LLMs and applied GenAI in production
• Strong understanding of LLM behavior, prompting techniques, evaluation strategies and common failure modes
• Solid Python skills and experience with GenAI frameworks or tooling such as PyTorch, LangChain, LlamaIndex or similar
• Experience building production-grade GenAI systems such as RAG pipelines, agents or tool-using models
• Experience deploying and operating AI systems in cloud environments, including cost and performance optimization
• Familiarity with LLMOps or MLOps practices such as observability, testing and lifecycle management
• Pragmatic, impact-driven mindset with the ability to communicate complex AI concepts clearly

What We Offer

• Competitive salary and equity options
• A dynamic, fast-paced work environment with a mission-driven team
• Flexible working arrangements (Hybrid)
• 30 days of PTO
• Regular team events and offsites
• Monthly mobility budget via Navit