Senior AI Engineer

Large company with great ambitions and close relations
Efficy is a leading European Customer Relationship Management (CRM) solution that provides businesses of all sizes with comprehensive, flexible, customizable, and scalable software to support their growth. Efficy’s platform includes solutions for marketing automation, sales, project management, customer service, and customer engagement. Currently, more than 300,000 users across 63 countries rely on Efficy’s tools.

Founded in 2005 and headquartered in Brussels, Efficy has around 500 employees working in local offices across Belgium, France, Spain, the Netherlands, Sweden, Denmark, Finland, Norway, Poland (Warsaw), Hong Kong, or remotely.

Our mission is to contribute to the success of every company by helping them turn customer data into valuable insights while simplifying their employees' work.

At Efficy, no two days are the same, and things evolve quickly. So, fasten your seatbelt and join us on this exciting journey!

A unique work experience & company culture

We want our employees to thrive in their daily lives, which is why you can expect exciting challenges, online music quizzes, onsite ping-pong tournaments, and much more. Communication is informal, and your colleagues are always just a short call away.

Your Impact

This is an exciting new role at Efficy, central to our next-generation CRM innovation. As part of a newly formed, agile team, you will design, develop, and deploy LLM-based agents that deliver real business value and integrate seamlessly into CRM workflows - all while ensuring full compliance with GDPR and data residency requirements.

You’ll help shape the strategic vision and then roll up your sleeves to execute on a groundbreaking project.

This role can be based in our office in Toulouse or Paris.

Key Responsibilities

• Define and execute the AI agents strategy within the CRM platform, ensuring strong business relevance and smooth integration into existing workflows.
• Design agent architectures, including MCP protocol, orchestration, tool calling, memory management, evaluation, contextualization, RAG, and prompt engineering.
• Oversee deployment of AI solutions in both multi-tenant SaaS and on-premise environments.
• Select, adapt, and industrialize European open-source models, optimizing cost-performance trade-offs.
• Ensure security, GDPR compliance, and explainability of all developed agents.
• Implement observability and evaluation tools, including tracing, A/B testing, and cost monitoring.
• Collaborate closely with Data Science, Product, and Engineering teams to guarantee technical and functional alignment.

Tech Stack

• Languages & Platforms: Python, Java, Kotlin, LLMs, Agent orchestration platforms

• Frameworks & Tools: LangChain, Vector databases

About YOU

• Strong knowledge of the technical stack with excellent command of AI-related languages and frameworks.
• Experience architecting distributed, orchestrated AI systems (protocols, pipelines, integration into complex workflows).
• Skills in cost-performance optimization for models (latency, GPU usage, scalability).
• Strong analytical mindset, technical rigor, and ability to prioritize.
• Autonomy, proactivity, and ability to drive complex initiatives in a rapidly evolving environment.
• Excellent written and verbal communication skills in French and English (fluency required).

We offer YOU

• A stable and growing company with an entrepreneurial mindset, where your ideas are valued, and we support you in making them happen
• High flexibility—hybrid work is part of our DNA
• State-of-the-art offices where teamwork is the norm
• International growth opportunities and internal mobility
• A competitive salary package with and a referral program
• Engaging events: team lunches, after-work gatherings, sports activities, and trips
• Learning opportunities: languages, technology, product knowledge, sales techniques, and leadership development

Do you have questions about this position? Please contact [email protected]

Find more jobs at https://jobs.efficy.com

Efficy is a people-first employer, committed to providing equal opportunities for all candidates. We take pride in the diversity of our team and welcome you—exactly as you are. This includes your gender identity, sexual orientation, religion, ethnicity, age, or disability status.

If you're interested in joining us, we encourage you to apply. We can’t wait to meet you!

Disclaimer
Efficy does not accept unsolicited assistance from search firms for this employment opportunity. Please refrain from making phone calls or sending emails.

All résumés submitted by search firms to any Efficy employee via email, the internet, or any other method without a valid written search agreement in place for this position will be considered the sole property of Efficy. No fees will be paid if a candidate is hired as a result of an unsolicited referral or through other means.

Department
R&D

Role
AI Developer

Locations
Toulouse, Paris

Remote status
Hybrid