AI Engineer

YLD.com

Lisbon, Portugal

Full-time, Engineering Department

About YLD

YLD is a software engineering and design consultancy with offices in London, Lisbon, and Porto. The firm helps clients develop competitive capabilities and fosters a progressive culture of learning.

The Role

Building new AI-powered features and improving client Digital Platforms with intelligent capabilities. Day-to-day involves continuous product delivery with AI model integrations, team collaboration on engineering and AI initiatives, and participating in internal showcase events.

Required Skills & Experience

Core Programming & AI

JavaScript, TypeScript, and Python proficiency
Advanced expertise in RAG, embeddings, vector search, and prompt engineering
Evals, guardrails, caching, chaining, and function calling
Agentic architecture design: multi-agent systems, tool orchestration, planning/reasoning frameworks, memory systems, and agent coordination patterns
LLM frameworks (LangChain, LlamaIndex, LiteLLM, CrewAI, Mastra)
API integrations (OpenAI, Anthropic)
Fine-tuning knowledge (LoRA/QLoRA, instruction tuning, RLHF)

Data & Databases

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

Infrastructure & DevOps

CI/CD pipelines, Terraform, CloudFormation, CDK
AWS, Azure, GCP cloud platforms
Docker, Kubernetes containerization
LLM inference optimization (vLLM, TGI)

Frontend & APIs

React or modern UI frameworks
GraphQL, gRPC, WebSockets, MCP
API design for LLM services
Real-time chat handling

Benefits

Private health care
25 days annual holiday
2,000 EUR training/conference allowance
300 EUR hardware allowance
Enhanced parental leave (6 months paid)
Wellness support via Oli
Discretionary bonus
Company laptop
Referral schemes

Recruitment Process

Two-stage process: initial talent team interview (30-45 minutes) followed by technical interview with senior developers (1.5 hours).

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