Lead Generative AI Engineer

Bain & Company, Inc.; Paris; Hybrid; EUR 90,000 - 130,000; Full time

Job summary

Bain & Company, Inc. is seeking a Lead AI Engineer to design, build, and ship generative AI systems for client projects. You will contribute across the full development lifecycle, collaborating with engineers, product managers, and data scientists.

This is a hands-on role with growing technical leadership and mentoring opportunities. You will work across partnerships, implement scalable AI solutions, and help shape enterprise deployments with responsible AI practices.

Qualifications

• 3-5+ years in software/ML engineering or applied AI with hands-on building responsibilities.
• French language proficiency at C1 level or higher.
• Experience shipping generative AI features or systems end-to-end, from prototyping through production.
• Clear communication skills to explain technical concepts to non-technical stakeholders.
• Collaborate across engineering, product, and data science teams; mentoring peers is a plus.
• Strong prompt engineering and context engineering skills; familiarity with conversation design.
• Experience with RAG architectures (vector retrieval, hybrid/graph approaches).
• Knowledge of ReAct, RLAIF, HITL + feedback loops and AI safety.

Responsibilities

• Contribute to design, development, and deployment of end-to-end generative AI systems.
• Build multi-component AI pipelines (RAG, embedding gen, tuning).
• Implement reasoning, tool use, function calling, and orchestration across AI workflows.
• Develop agentic systems with sound engineering practices and memory management.
• Participate in full-stack work: model experiments, eval design, production deployment.
• Maintain APIs, microservices, CI/CD, and cloud deployments with observability.
• Support automated testing, regression eval, latency monitoring, and continual improvement.
• Balance performance, safety, and cost; implement guardrails and HITL workflows.

Skills

Software engineering

ML engineering

Applied AI

Cross-functional collaboration

Tools

RAG architectures

Agentic patterns

Orchestration frameworks

Vector databases

Graph databases

Job description

Bain & Company, Inc. is seeking a Lead AI Engineer to design, build, and ship generative AI systems for client projects. You will contribute across the full development lifecycle, collaborating with engineers, product managers, and data scientists.

This is a hands-on role with growing technical leadership and mentoring opportunities. You will work across partnerships, implement scalable AI solutions, and help shape enterprise deployments with responsible AI practices.