Damia Group

AI Search and Retrieval Principal Engineer

Damia Group  •  Lisbon, PT (Hybrid)  •  3 months ago
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Job Description

Our Client is currently hiring a AI search and retrieval Principal Engineer to join their amazing team 
About the company:
Founded in 2017, they are  a leading expert network and primary research platform that connects businesses with vetted subject-matter experts for calls, surveys, and longer engagements.
The platform combines AI-powered search with human expertise to deliver fast, accurate, and scalable solutions for knowledge access.
About the role/What you'll do: You will act as both a hands-on builder and a technical leader within a mid-sized team, defining long-term architecture and making key technology decisions.
Search Architecture Strategy: • Evaluate and define the future search stack (technology selection is part of the role).
• Design a scalable, cloud-native search architecture from first principles.
• Decide between and combine approaches such as:
  -Keyword search
  -Vector search
  -Hybrid retrieval
  -Graph-based retrieval
  -LLM re-ranking • Design indexing, data modelling, and ranking strategies.
• Define measurable relevance and quality frameworks.
Knowledge Graph & Intelligent Retrieval:
• Design and implement a Knowledge Graph architecture modeling entities and relationships.
• Define graph schema, linking strategies, and enrichment workflows.
• Combine graph-based signals with semantic search and ranking models.
• Build extraction pipelines on top of frontier models (OpenAI, Gemini).
• Develop modern recommendation systems leveraging structured + unstructured data.
Data & Cloud Infrastructure (GCP-first):
• Architect retrieval pipelines on Google Cloud Platform (GCP).
• Design data pipelines and feature stores using BigQuery or alternative
analytical systems.
• Ensure scalability, observability, and cost efficiency.
• Build production-grade systems, not experiments.
Requirements:
  • 5+ years building and scaling production search or retrieval systems.
  • Strong Python skills.
  • Strong experience designing search architectures, not just operating them.
  • Experience evaluating and selecting search technologies.
  • Experience with semantic search and embeddings-based retrieval.
  • Experience building pipelines on top of frontier LLMs (OpenAI, Gemini).
  • Experience leading technical initiatives in mid-sized teams.
  • Experience working with cloud-native systems (GCP).

What they offer:  Tenure Gifts - Vouchers, extra holiday and sabbaticals for each year of employment.
Health insurance.
Enhanced Maternity & Paternity pay.
Meal allowance.
Training budget. Corporate Events - From quarterly gatherings to their annual winter & Summer parties, they love to celebrate, collaborate and have fun together!
Want to know more? Get in touch with us 👇
Damia Group

About Damia Group

Damia Group is a trusted talent solutions partner with over 30 years of experience supporting security-cleared environments, including defence, government, space, and aerospace.

We work closely with the UK’s leading prime suppliers, delivering high-quality staff augmentation and SOW-based project solutions across major technology and transformation programmes. Our long-standing client relationships are built on reliability, compliance, and a deep understanding of complex project demands.

With an actively managed network of specialist professionals, we connect the right talent to critical programmes quickly and effectively.

Our tailored approach and sector knowledge help organisations modernise their technology, strengthen security, streamline operations, and deliver business-critical transformation projects across both the public and private sectors.

If you need support in building an agile, blended workforce to deliver your business-critical transformation projects, get in touch with us today.

Industry
IT & Software
Company Size
51-200 employees
Headquarters
Guildford, GB
Year Founded
1995
Website
damiagroup.com
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