Senior French AI Solutions Architect — RAG & LLM Orchestration

Hexa Group; Lisboa; Hybrid; EUR 90,000 - 130,000; Full time

Benefits offered by this job

Private health insurance

Mental health support

Learning and certification support

Flexible work arrangements

Family support measures

Team moments and community environment

Upskilling opportunities in AI and IT

Job summary

Hexa Group in Lisbon is seeking a Senior AI Solutions Developer for a hybrid role in the banking sector, focusing on designing, testing and industrializing AI-based solutions. You will lead the definition of AI development practices, build reusable capabilities, and collaborate with cross-functional teams to turn opportunities into value.

The role offers opportunities to shape internal developer communities and advance AI governance within a fast-paced environment.

Qualifications

• Senior level experience in software development with hands-on AI solutions.
• Proven track record building, deploying and optimizing AI agents and RAG-based systems.
• Autonomous, ownership-driven mindset in fast-paced environments.
• Ability to balance innovation with practical constraints and quality.
• Collaborative approach to engage technical communities around reusable assets.
• Professional working proficiency in French at C1 level.

Responsibilities

• Research, test and develop AI-powered applications, agents and reusable AI components.
• Define, validate and document MCPs, SKILLs and HOWTO guides to support consistent AI solution delivery.
• Support the establishment of a new software development lifecycle for AI-enabled delivery.
• Design and implement AI agents with advanced orchestration capabilities.
• Maintain and improve RAG systems, vector databases, embeddings and semantic search solutions.
• Optimize token utilization, context management and AI execution patterns to improve cost-efficiency and performance.
• Integrate and orchestrate multiple LLM providers across AI solutions.
• Facilitate an internal AI developer community, encouraging knowledge sharing, SKILL creation and proposals for agents or MCPs.
• Collaborate with cross-functional teams to identify, analyze and deliver AI opportunities aligned with business needs.
• Monitor emerging AI technologies, delivery practices and relevant industry trends.

Skills

AI solutions

AI agents

RAG systems

Vector databases

Embeddings

LLM orchestration

Prompt engineering

Technical documentation

Community enablement

Cross-functional collaboration

Tools

Node.js

Python

Job description

Hexa Group in Lisbon is seeking a Senior AI Solutions Developer for a hybrid role in the banking sector, focusing on designing, testing and industrializing AI-based solutions. You will lead the definition of AI development practices, build reusable capabilities, and collaborate with cross-functional teams to turn opportunities into value.

The role offers opportunities to shape internal developer communities and advance AI governance within a fast-paced environment.