Lead Data Scientist – Generative AI

About Axians

The world is more connected than ever before and the pace of change is bewildering. We deliver the best combination of technology and services to enable our clients to fulfil the diverse needs of their customers. By fostering a deeply and personal relationship with our clients, we want to improve the lives of people and organizations. Axians is the VINCI Energies brand dedicated to ICT and Digital Transformation. We’re present across 38 countries, with more than 16 600 employees and an annual revenue of more than 3.7 billion euros, in 2024.

Axians Low-Code is a leading OutSystems high-performance low-code Partner with over 15 years of experience, 750+ projects delivered, and Offices in the US, UK, Portugal, Brazil & Netherlands. We are specialised in guiding and accelerating our customers’ journey through their agile development & digital transformation to overcome the business challenges of today, improving their Customers’ experience and consequently their ROI.

Key Responsibilities

• Lead the design and development of intelligent virtual assistants that integrate LLMs with real-time voice interaction capabilities
• Architect end-to-end conversational AI pipelines, including speech recognition, natural language understanding, LLM reasoning, response generation, and text-to-speech synthesis
• Optimize LLM performance for conversational contexts, including prompt engineering, fine-tuning, and context management for multi-turn dialogues
• Design and implement low-latency inference systems to enable responsive, human-like voice conversations
• Build evaluation frameworks to measure conversation quality, coherence, accuracy, and user satisfaction
• Integrate multi-modal capabilities allowing the assistant to process and respond to both voice and text inputs seamlessly

Technical Focus Areas

• LLM Integration: Adapting large language models (GPT, Claude, Llama, etc.) for conversational contexts and virtual assistant use cases
• Conversational AI: Dialogue management, context tracking, memory systems, and multi-turn conversation optimization
• Real-time Systems: Low-latency streaming architectures for natural voice interactions with minimal delay
• Personalization: Building adaptive systems that learn user preferences and communication styles

Required Qualifications

• PhD or Master's degree in Computer Science, AI, NLP, or related field with 4+ years of experience,
• Extensive experience working with large language models (GPT-4, Claude, Gemini, LLaMA, etc.) and prompt engineering
• Deep understanding of conversational AI architecture, including dialogue systems and natural language understanding
• Strong knowledge of transformer architectures and experience fine-tuning LLMs for specific domains
• Proficiency with modern ML frameworks (PyTorch, TensorFlow) and LLM APIs (OpenAI, Anthropic, etc.)
• Experience optimizing models for production, including latency reduction and cost optimization
• Fluent in English, both spoken and written.

What we offer:

• Flexible work regime.
• Extra days off.
• 5 extra days of parental leave.
• Internal mobility cross geography, role or industry.
• Employee Stock Options plan.
• Employee Assistance Program.
• Flex Benefits Plan.
• Health and Life Insurance Insurance.

If you meet the requirements above, apply now!