Senior AI Solutions Developer| French Speaker

Decskill; Lisboa; Hybrid; EUR 70,000 - 95,000; Full time

Job summary

Decskill, part of the Astek Group, is seeking a Senior AI Solutions Developer to lead research, testing, development and optimization of AI-powered solutions in a hybrid model.

Based in Lisbon, Porto, or Madrid, the role emphasizes cutting-edge AI, RAG systems, vector databases, embeddings, and multi-LLM orchestration with a focus on performance and cost efficiency. French language at C1 level is required, and 6+ years of experience are expected.

Qualifications

• 6+ years of professional software development experience.
• Strong hands-on experience building and deploying AI-powered applications.
• Proficient in Node.js and/or Python; proven AI solution deployment.

Responsibilities

• Research, test, and develop cutting-edge AI-powered solutions and applications.
• Design, build, and deploy AI agents with advanced capabilities.
• Develop and maintain RAG systems.
• Work with vector databases and semantic search.
• Optimize token usage, context, prompts, and AI workflows for performance and cost.
• Design context and hash-based context management solutions.
• Integrate multiple LLM providers (OpenAI, Anthropic, Google, etc.).
• Identify new AI opportunities across the business.
• Collaborate with cross-functional teams to transform ideas into scalable AI solutions.
• Continuously research emerging AI technologies, tools, and best practices.

Skills

Node.js

Python

AI agents

RAG architectures

vector databases

embeddings

semantic search

prompt engineering

token optimization

context management

LLM integration

French language (C1)

Tools

Pinecone

Weaviate

Chroma

Job description

We are growing. And we are looking for talented people.

At Decskill, we believe that technological excellence is driven by human talent.

We are an IT consulting company with more than 10 years of consolidated experience in the market, focused on building long-term relationships with both our clients and our people. Today, we are a community of over 800 professionals, working from Lisbon, Porto, and Madrid, contributing to impactful technology initiatives.

As part of the Astek Group, we combine a strong local culture with a global presence, being active in around 23 countries across 4 continents. This allows us to offer an international context, diverse challenges, and long-term career opportunities, while staying close to our teams.

We would like to meet a Senior AI Solutions Developer for a project with a hybrid working model:

We’re looking for a Senior AI Solutions Developer (6+ years of experience) to lead the research, testing, development, and optimization of AI-powered solutions that will help drive our company’s next stage of innovation.

What you’ll be doing:

• Research, test, and develop cutting-edge AI-powered solutions and applications
• Design, build, and deploy AI agents with advanced capabilities
• Develop and maintain RAG (Retrieval-Augmented Generation) systems
• Work with vector databases, embeddings, and semantic search
• Optimize token usage, context, prompts, and AI workflows for performance and cost efficiency
• Design intelligent context and hash-based context management solutions
• Integrate and orchestrate multiple LLM providers, including OpenAI, Anthropic, Google, and others
• Identify new opportunities to apply AI across the business
• Collaborate with cross-functional teams to transform ideas into scalable AI solutions
• Continuously research emerging AI technologies, tools, and best practices

What we’re looking for:

Experience:

• 6+ years of professional software development experience
• Strong hands-on experience building and deploying AI-powered applications

Technical skills:

• Strong proficiency in Node.js and/or Python
• Proven experience developing and deploying AI agents
• Solid experience implementing RAG architectures
• Hands-on experience with vector databases such as Pinecone, Weaviate, Chroma, or similar
• Strong understanding of embeddings and semantic search
• Experience integrating multiple LLM providers
• Strong knowledge of prompt engineering and token optimization
• Experience with context management and optimization techniques
• Strong problem-solving mindset and a passion for experimentation and innovation

Language:

• French: C1 level or above

Find with us the right opportunity to grow!

What you can expect from us:

• Long-term projects with national and international context
• Opportunities to grow technically and professionally
• A people-first culture, focused on transparency and trust
• Teams that value ownership, collaboration and stability

Your next challenge might start here.

At Decskill, we are committed to equal opportunities and non-discrimination. We promote a culture of diversity and inclusion, where recruitment and career progression are based solely on talent, regardless of age, gender, ethnicity, race, nationality, or any other form of discrimination incompatible with human dignity.