AI Engineer

YLD is a software engineering and design consultancy with offices in London, Lisbon, and Porto. They are seeking an AI Engineer to join their Lisbon office.

Key Responsibilities:

• Develop AI-powered features meeting client customer needs
• Integrate AI models, optimize prompts, and improve systems via CI/CD
• Collaborate on traditional engineering and AI initiatives
• Present work from experiments through production deployments
• Participate in client events and knowledge-sharing activities

Required Skills & Experience:

Core Programming & AI:

• Strong JavaScript, TypeScript, Python experience
• Advanced GenAI/LLM expertise: RAG, embeddings, vector search, prompt engineering, evals
• Fine-tuning: LoRA/QLoRA, instruction tuning, RLHF
• Agentic architecture and multi-agent systems
• LLM frameworks (LangChain, LlamaIndex, CrewAI, Mastra)

Infrastructure & DevOps:

• CI/CD pipelines, IaC tools (Terraform, CloudFormation, CDK)
• AWS, Azure, GCP for GenAI workloads
• Docker, Kubernetes for AI applications

Data & Databases:

• Vector databases (Pinecone, Weaviate, Chroma, Qdrant)
• PostgreSQL, Neo4j
• RAG pipeline design

Frontend & APIs:

• React or modern frameworks
• API design for LLM services
• Real-time chat and streaming

Performance & Reliability:

• High-performance, scalable AI applications
• LLM cost optimisation, token management, and caching
• Comprehensive testing practices

Benefits:

• Company private healthcare
• 25 days annual holiday
• EUR 2,000 training/conference allowance
• EUR 300 hardware allowance
• Enhanced maternity/paternity leave (6 months)
• Wellness support
• Company laptop
• Discretionary bonus
• Referral schemes

Recruitment Process: Two-stage interview (talent team screening, technical interview with senior developers).