Lead AI engineer - Freelance

Mirakllabs; Paris; On-site; EUR 110,000 - 170,000; Full time

Job summary

Mirakl is seeking a Lead AI Engineer to design, build, and scale AI systems across key business domains from Sales to Finance. The role is a CDI based in Paris or Bordeaux with four days on-site per week, joining a fast-moving team tackling next-generation AI products in a commerce software environment.

You will combine deep AI engineering expertise with product and business understanding, shaping roadmaps, driving adoption, and delivering measurable outcomes across stakeholders.

Qualifications

• 7+ years in Software Engineering, ML Engineering, or Applied AI.
• Strong experience with LLMs, RAG, AI Agents, evaluation, and production systems.
• Ability to influence Product and Business decisions.
• Proven leadership on complex cross-functional initiatives.

Responsibilities

• Own Tech Strategy for Your Domain and define the agent product roadmap with business leaders.
• Lead AI system development, designing and building production-grade AI systems.
• Drive architecture decisions to ensure scalability, reliability, and maintainability.
• Grow AI capability by mentoring engineers and agent builders, sharing reusable components.

Skills

Senior AI Engineer

LLM expertise

Cross-functional influence

Tools

Python

SQL

OpenAI

Anthropic

Job description

About Mirakl

Founded in 2012, Mirakl has been at the forefront of marketplace innovation, empowering every business to compete in the platform economy. Today, Mirakl’s operating system combines an enterprise marketplace solution (Mirakl Platform) that enables retailers and B2B organizations to launch, scale, and operate marketplaces and dropship, AI-powered multichannel selling (Mirakl Connect), retail media (Mirakl Ads) and an agentic commerce infrastructure (Mirakl Nexus). With dual headquarters in Boston and Paris, Mirakl helps a global ecosystem of 450+ marketplaces (B2C and B2B) and a network of over 100k third-party marketplace sellers. Brands like Macy’s, Decathlon, Carrefour, Asos, and Airbus Helicopters use Mirakl to grow their businesses in new and remarkable ways. For more information: www.mirakl.com .

Mirakl in Numbers

Founded in 2012 | Member of French Tech Next40 750+ employees in 9 offices worldwide: Paris, Barcelona, Bordeaux, Boston, London, Munich, New York, Sydney, Tokyo 350+ Mirakl Tech teams members mainly based in France 5 Saas Solutions

Our Values

Working at Mirakl means accelerating your career alongside ambitious, passionate, and supportive colleagues. We're proud of the diversity of backgrounds, perspectives, and experiences that make our teams unique. Our 5 values guide how we collaborate: Work Hard Together: Teamwork and collaboration are the foundation of our success Get Things Done: We prioritize action and efficiency for impactful results Go Above & Beyond: We tackle challenges proactively and always aim for excellence Succeed Through Expertise: Knowledge sharing and continuous learning are core to our culture Satisfy & Empower Clients: We're committed to our clients' success

About the job

Lead the design, development, and adoption of AI systems within a strategic business domain. You will combine deep AI engineering expertise with product and business understanding to identify high-impact opportunities, define roadmaps, and deliver measurable outcomes. As the AI technical lead for your domain, you will drive architecture decisions, engineering excellence, and AI adoption across teams and stakeholders. Examples of domains include: Sales, GTM and Marketing or Finance & Legal This is a permanent position (CDI) based in Paris or Bordeaux, with 4 days on-site per week.

Why Now, Why Mirakl

Generative AI and AI Agents are fundamentally reshaping commerce software and the way our teams work on a day to day basis. At Mirakl, AI is becoming a core part of our product strategy. From Catalog Transformer and content generation to AI Agents and Agentic Commerce, we are building the next generation of commerce software. And we have the same ambition for our teams around AI products and adoption. We are looking for a Lead AI Engineer to transform cutting-edge AI technologies into reliable, scalable, and measurable products used by leading enterprises worldwide. You won't be joining a company that's thinking about AI. You'll be joining one that’s already building it.

What You’ll Do

• Own Tech Strategy for Your Domain Identify high-value opportunities with Business leaders Define the Tech vision and own the agent product roadmap for your domain
• Lead AI System Development Design and build production-grade AI systems Drive architecture decisions Ensure scalability, reliability, and maintainability
• Drive Adoption & Business Impact Work closely with end users Measure adoption and outcomes Accelerate AI transformation across your domain
• Establish Technical Excellence Promote best practices for evaluation, testing, guardrails, and observability Review designs and mentor engineers Raise the quality bar across initiatives
• Grow AI Capability Mentor AI Engineers and Agent Builders Share knowledge and reusable components Build AI expertise within your organization

Success Metrics

• Business impact delivered by AI initiatives
• Adoption within the domain
• Technical quality and reliability
• Team capability growth

Our stack and tools

• Languages: Python and SQL
• AI Stack: OpenAI, Anthropic, Gemini, Mistral and Open-source models
• Agentic & Retrieval: LangGraph, LangChain, LlamaIndex, MCP and Vector Databases
• Infrastructure: AWS or GCP, Docker and Kubernetes

You’ll Love This Job

• If you have 7+ years in Software Engineering, ML Engineering, or Applied AI
• Strong experience with LLMs, RAG, AI Agents, evaluation, and production systems
• Ability to influence Product and Business decisions
• Proven leadership on complex cross-functional initiatives