Stem Angle, Senior AI Engineer

Description

Strategic AI Engineer with 10+ years of foundational Data Engineering experience. Expert in architecting

production-grade LLM applications using LangGraph for stateful multi-agent systems and Claude Code for

agentic development. Proven record in LLM token optimization to reduce costs and latency. A rare blend

of deep big-data infrastructure knowledge and cutting-edge generative AI implementation.

Industry field of expertise

Languages

English
Native or bilingual

Workplace preferences

Remote only

Primarily works remotely

Enterprise AI Solutions
Lead AI Engineer
January 2023 - Today (3 years and 7 months)
Dublin, Ireland
Designed and deployed complex customer support ecosystems using LangGraph, transitioning from
linear chains to stateful, cyclic graphs, reducing "hallucination" rates by 35%.
Integrated Claude Code for automated repository refactoring and agentic coding tasks, increasing
internal engineering velocity by 40%.
Engineered a custom LLM Token Optimizer utilizing semantic pruning and dynamic context selection,
reducing monthly API overhead by $12k.
Established evaluation frameworks for model latency and accuracy across Claude 3.5 Sonnet and GPT-4o.
Prompt engineering LLM Langchain
Global Data Systems
Senior Data Engineer
DIGITAL AND IT
January 2013 - December 2022 (9 years and 11 months)
Slough, United Kingdom
Managed end-to-end lifecycle of Petabyte-scale data lakes, architecting real-time streaming pipelines
using Spark and Kafka.
Optimized SQL queries and Snowflake schemas, resulting in a 50% reduction in compute costs over 2
years.
Led a team of 6 engineers to migrate legacy on-premise Hadoop clusters to AWS, ensuring zero
downtime for critical BI reporting.
Developed robust ETL processes in Python and Scala, maintaining 99.9% uptime for enterprise-grade
tools.

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B.S.
University
B.S.
AWS Certified Solutions Architect – Associate DeepLearning.AI
NLP Specialization
AWS Certified Solutions Architect – Associate DeepLearning.AI

AI engineer