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Ethan HeatonEH
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Ethan Heaton

@ethanheaton

Senior full-stack engineer building React/Node and AI systems to deliver scalable, high-conversion platforms on AWS.

Ireland
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What I'm looking for

I’m looking to lead end-to-end architecture for high-traffic products, combining React/Node engineering with AI (RAG, vector search) to improve performance, reliability, and measurable revenue outcomes.

I’m a Senior Full Stack Engineer with 8+ years of experience leading end-to-end architecture and delivery of scalable web platforms for high-traffic environments. I’m known for translating complex business requirements into high-performance, revenue-impacting systems that deploy reliably on AWS.

I build modern frontends and backends with React, Next.js, Node.js, and Python, delivering features that move the needle on search experience, conversion, and platform performance. At Bloomreach, I engineered personalization and product discovery capabilities that improved performance and contributed to higher conversion rates for enterprise e-commerce clients.

My work increasingly centers on AI-driven backend systems, including RAG architectures and vector search. I designed and implemented RAG using OpenAI embeddings and a vector database, built embedding pipelines for structured/unstructured commerce data, and orchestrated AI workflows with LangChain to produce context-aware responses.

I also focus heavily on reliability and latency—optimizing PostgreSQL queries, reducing API latency during peak events, integrating Redis caching, and using Docker on AWS to keep systems scalable. Across teams and roles, I’ve partnered closely with product and design to ship customer-facing features and stabilize distributed services under real-world demand.

Experience

Work history, roles, and key accomplishments

Bloomreach logoBL

Senior Full Stack Engineer

Jun 2022 - Jan 2026 (3 years 7 months)

Built personalization and product discovery features with React and Node.js, improving customer search performance and contributing to higher conversion and revenue for enterprise e-commerce clients. Engineered AI services with Node.js (NestJS/Express) and Python (FastAPI), including a RAG + vector search system, and reduced API latency by 30% while improving conversion by 20% via caching, async p

Omio logoOM

Full Stack Developer

Oct 2017 - Apr 2020 (2 years 6 months)

Developed booking and search interfaces with React and Node.js services supporting millions of travel searches. Built REST APIs for search aggregation, pricing logic, and booking workflows across providers, optimizing frontend rendering and database queries to improve search response times and booking flow responsiveness during seasonal spikes.

Education

Degrees, certifications, and relevant coursework

Athlone Institute of Technology logoAT

Athlone Institute of Technology

Bachelor of Science in Software Engineering, Software Engineering

2012 - 2016

Earned a Bachelor of Science in Software Engineering from Athlone Institute of Technology between 2012 and 2016.

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