Cillian Berragan

Experience

• Founding Engineer · Nebula AI

  Feb 2026 — Present
  Remote
  • Autonomous AI workforce platform: users deploy agents that take action across 600+ connected apps from conversation, no code.
  • Took ownership of the full backend early on; primary engineer driving the platform since.
  • Agent execution engine, durable workflow orchestration, multi-agent coordination, persistent memory, real-time streaming.
  • 600+ app integrations and the API surfaces powering the product.

• Software Engineer · thirdweb

  Mar 2025 — Mar 2026
  Remote
  • Engineer on thirdweb AI: a conversational agent platform for interacting with onchain infrastructure and thirdweb dev tools.
  • Grew into the primary backend engineer, contributing across RAG pipelines, API development, and agent tooling.

• Machine Learning Engineer · Consumer Data Research Centre

  Dec 2023 — Mar 2025
  Liverpool / Remote
  • Built a Retrieval-Augmented Generation search system over a collective UK Data Catalogue, powered by LlamaIndex.
  • Applied NLP to improve data discovery and access across the catalogue.
  • Stack: LangChain, ETL pipelines, vector search.

• PhD Researcher · Geographic Data Science Lab

  Sep 2019 — Dec 2023
  Liverpool
  • NLP and geography research at the University of Liverpool.
  • Extracting and mapping cognitive place associations from Reddit and Twitter text.

• Data Scientist · Consumer Data Research Centre (Leeds)

  Feb 2021 — May 2022
  Liverpool, part-time
  • Access to Healthy Assets & Hazards (AHAH): postcode-to-PoI drive-time index across England.

Education

• PhD, Natural Language Processing & Geography · University of Liverpool

  2019 — 2023

  Thesis on extracting cognitive place from informal social media text.

• MSc, Geographic Data Science · University of Liverpool

  2018 — 2019

  Distinction (82%). Dissertation 85%: parametric classification of UK rural roads from LiDAR.

Selected publications

• Mapping Great Britain's semantic footprints through a large language model analysis of Reddit comments

  Computers, Environment and Urban Systems · Jun 2024

• Mapping cognitive place associations within the United Kingdom through online discussion on Reddit

  Transactions of the Institute of British Geographers · Jan 2024

Full list on Google Scholar.

Skills