LEAD AI ENGINEER & ARCHITECT

Responsibilities

• Design and validate end-to-end, enterprise-grade AI architectures (LLM orchestration, MLOps/AIOps pipelines, vector search, data platforms, observability, security)
• Integrate AI solutions into complex enterprise environments, ensuring scalability, reliability, compliance, and production readiness
• Lead advanced AI engineering workstreams, including fine-tuning, optimization, and/or pre-training of open-source LLMs
• Define and promote engineering best practices, reference architectures, and reusable accelerators to industrialize delivery
• Oversee technical delivery across multiple AI projects, mentor AI engineering teams, and manage execution topics (quality, timelines, risks, dependencies)
• Act as a senior client-facing advisor: requirements discovery, regulatory-to-technical translation (AI Act, Data Act, GDPR), and contribution to pre-sales (proposals, RFPs, pitches, use-case ideation)
• Competitive salary package
• Enjoy the best of both worlds: a startup pace and autonomy, backed by Reply’s international group (stability, resources, and a full corporate benefits package)
• Collaborate closely with leadership, with direct access to decision makers and a fast, agile governance model that values autonomy and high-impact contributions
• Influence both strategy and delivery, shaping not only what we build for clients but also how we operate internally
• Thrive in Reply’s innovation-driven culture with competitive benefits, in an environment built for people who want to innovate, create, and contribute to a broader European mission

Qualifications

• 5+ years overall experience, including 2+ years in AI engineering and solution architecture
• Minimum Master’s degree in Computer Science or a related field (or equivalent)
• Strong ability to design AI & data architectures integrated into enterprise landscapes; hands-on LLM fine-tuning/adaptation/training and production delivery
• Consulting background: requirements gathering, stakeholder management, and translating AI regulations into actionable technical requirements
• Excellent French & English communication/presentation skills; experience leading technical teams, contributing to governance, and solid project-management capabilities
• Nice to have + soft skills: Mistral AI, sovereign cloud (OVHcloud/Outscale), PMP/Prince2, regulated industries exposure; critical thinking, ownership, trust-building, and leadership