Corey Duffy

Corey Duffy

Senior Software Engineer, Tech Lead & AI Solutions Architect

Over a decade of software engineering experience, delivering robust solutions and award-winning AI solutions for enterprise clients across fintech, cybersecurity, medtech and transport.

About

I'm a results-focused senior software engineer and technical lead who delivers AI solutions and software products for enterprise clients, from early prototypes to full-scale systems.

I'm committed to writing clean, maintainable, production-ready code while leading teams and mentoring engineers within startups and larger enterprises.

Experience

Senior Software Engineer

Brightbeam Apr 2025 – Present
AI solutions for enterprise clients in medtech & transport
  • Led JJ Kavanagh project from concept to completion, enabling client to win Investment in Innovation Award
  • Developed working proof-of-concepts enabling clients to visualise AI capabilities and achieve stakeholder buy-in
  • Planned and architected multiple AI solutions for medtech clients with complex security requirements
  • Built reusable infrastructure scripts and shared tooling to accelerate team delivery

Product Engineer

Fluent Aug 2024 – Nov 2024
AI Text-to-SQL product development
  • Improved generated SQL accuracy by over 75% through metrics layer implementation
  • Halved response time and significantly improved LLM output quality through prompt tuning
  • Delivered new BI features improving customer retention
  • Conducted customer interviews to establish product-market fit

Software Developer

m3ter Oct 2022 – Aug 2024
Usage-based billing platform development
  • Reduced console search time from over a minute to under a second via new search service
  • Reduced ad-hoc bill calculation time from 30+ minutes to seconds
  • Solved critical security issue with "support user" access system
  • Addressed high-risk architectural issues ensuring stability under vast data loads

Software Engineer

Uleska Nov 2020 – Oct 2022
Security tool automation platform
  • Mentored developers in best practices, improving code quality and review culture
  • Reduced incident response time from hours to minutes via observability initiative
  • Pioneered "Toolkits" feature driving major increase in customer satisfaction
  • Implemented self-service flow with Stripe payments improving product adoption

Graduate Software Engineer

Signifyd Sep 2019 – Nov 2020
Fraud detection microservices
  • Developed features enabling chargeback analysts to make cost-saving decisions in under a minute
  • Reduced operating costs by £1000s via Elasticsearch cluster restructuring

Associate Software Engineer

Kainos Sep 2015 – Aug 2019
WorkSmart SaaS automated testing system
  • Led team meetings, sprint ceremonies, and product roadmap discussions
  • Developed structured mentorship program for faster onboarding
  • Primary contact during critical maintenance and feature releases

Skills

Languages & Frameworks

Python Django Java Micronaut Spring JavaScript React HTML/CSS

AI & Data

LLMs Vector Databases PostgreSQL MySQL ElasticSearch ClickHouse

Cloud & Infrastructure

AWS Azure Docker Kubernetes CDK Git

Get In Touch

Interested in working together? Let's connect.