Ethan Cornwill

HI, I'M
ETHAN

AI ENGINEER &
SYSTEMS ARCHITECT

13+ years building software. 10 years managing operations.
Now I architect AI systems that survive production,
not just demos that die in staging.

AI DEVELOPMENT
AGENT SYSTEMS
PRODUCTION ML

About Me

WHO AM I?

I Build AI Systems That Ship

Not demos. Not prototypes. Production systems handling real traffic.

I've spent 13+ years writing code and 10 years managing operations where downtime costs money and failures are public. That combination taught me something most AI engineers miss: the gap between "works on my machine" and "works under load with actual users."

I train LLMs at DataAnnotation. I evaluate model reasoning. I debug AI logic errors. I build RAG pipelines and agent systems. I deploy full-stack applications. All while maintaining ethical practices and radical transparency.

I wrote SPARCโ€”a 3,000+ line prompt library for Roo Code.

12 specialized agents, security mandates, and TDD workflows. It's systematic prompt architecture that reduces scaffolding from 2 days to 4-6 hours. Not a framework. A way to encode production engineering into prompts.

What I'm Shipping

SPARC Prompt Library:

Built Fusion, MagnetLab projects, this portfolio.

Fusion Infrastructure:

Architected compliance systems for real political organization.

WORK

Experience

2025
ALDI Stores Australia

ALDI Stores Australia

Duty Store Manager

Current

October 2025 - Present

Managing daily operations for one of Australia's leading discount grocery retailers, focusing on operational efficiency, team leadership, and customer service excellence in a fast-paced retail environment.

2025
Axion

Axion โ€” Technical Venture Framework (Concept Stage)

Founder & Lead Engineer

Current

Oct 2025 โ€“ Present

Axion is my applied R&D initiative exploring the intersection of AI-assisted development, venture incubation, and ethical innovation. Architecting and building proof-of-concept products such as Nexus and the SPARC framework. Developing human-in-the-loop AI workflows to enhance developer productivity and maintain design quality. Experimenting with small-team collaboration models that emphasize motivation, accountability, and autonomy. Currently in concept stage, Axion serves as a launchpad for future ventures and a real-world testbed for scalable AI-native systems.

2024 - 2025
DataAnnotation

DataAnnotation

AI Code Analyst / Software Developer โ€“ AI Trainer

Current

May 2024 - Present

Evaluated and refactored AI-generated code in multiple languages (including Python and JavaScript) to improve logic, enforce best practices, and ensure correctness.
Assessed and rated the quality of Large Language Model (LLM) responses against complex rubrics, comparing multiple outputs for accuracy, helpfulness, and safety.
Developed targeted coding challenges and unit tests designed to evaluate the reasoning and real-world problem-solving capabilities of AI models.
Analyzed and debugged complex functions to identify logic errors and tested the model's ability to correctly utilize real-world tools like APIs and command-line interfaces.
2025
MagnetLab

MagnetLab

Lead Software Engineer | AI Systems

March 2025 - September 2025

Architected and built the Magnet AI Agents platform, deploying bespoke voice and chat agents that automate client intake, qualify leads, and resolve support tickets, directly reducing non-billable hours for service-based businesses.
Led the development of the Magnet CRM, white-label, all-in-one sales OS designed to be fully branded and launched for clients in under 7 days.
Engineered and implemented the proprietary SPARC methodology, an AI-assisted development workflow that reduces build times for complex web applications by up to 75% compared to traditional agency models.
Directed the technical vision for all client projects and internal ventures, ensuring every system built is scalable, secure, and focused on delivering measurable business outcomes.
2022 - 2025
McDonald's

McDonald's

DirectWest Pty Ltd

Operations Technology Platform (OTP) Manager

March 2024 - October 2025

Conducted monthly OTP Tech Travel Path audits, identifying and resolving issues to maintain 99% technology uptime.
Utilized resources and technical knowledge to troubleshoot POS system errors, minimizing customer wait times.
Proactively identified and resolved network connectivity issues, preventing potential disruptions to restaurant operations.

Assistant Business Manager

August 2022 - March 2024

Successfully implemented strategies to drive sales, optimize team performance, and maintain exceptional QSC&V standards, ensuring a positive customer experience and achieving business objectives.

Department Manager

June 2022 - August 2022

Successfully completed and implemented training for People Performance, Product Quality, and Customer Experience departments, demonstrating a well-rounded skillset in restaurant operations.

Department Manager

July 2019 - April 2020

Successfully completed and implemented training for People Performance, Product Quality, and Customer Experience departments, demonstrating a well-rounded skillset in restaurant operations.

Shift Supervisor

May 2018 - July 2019

Successfully completed all required training, including Leadership Transitions, First Aid, and Fire Training, demonstrating readiness to lead shifts and ensure operational efficiency. Supervised and motivated crew members, ensuring adherence to McDonald's procedures and QSC&V standards.

Area Manager

December 2017 - May 2018

Managed multiple operational areas within the restaurant, coordinating between departments and ensuring smooth daily operations while maintaining high standards of service quality.

Crew Member

August 2015 - December 2017

Gained foundational experience in fast-paced food service operations, developing strong teamwork, communication, and customer service skills while maintaining food safety standards.

2020 - 2022
Taco Bell Australia

Taco Bell Australia

Assistant Restaurant Manager

June 2020 - June 2022

Managed daily operations for the busiest Taco Bell restaurant in the country, consistently achieving top-tier results across all major KPIs, including customer satisfaction, speed of service, and labor management.
Directed the successful launch of two new restaurant locations, establishing foundational operating procedures and recruiting and training new-hire teams of up to 70 staff members from the ground up.
Recognized with over 12 performance awards for operational excellence; implemented inventory control measures that reduced food waste by 15%.

Education

LEARNING
2024
Coder Academy

Coder Academy

Diploma of Information Technology - Web Dev

GPA: 5.88/6

Full-time study program focused on modern web development technologies and practices.

2024
Life Saving First Aid

Life Saving First Aid

First Aid

2021
St John Ambulance Victoria

St John Ambulance Victoria

First Aid

2020
Club Training Australia

Club Training Australia

Food Safety Supervisor

2020
iTFE

iTFE

Responsible Service of Alcohol

2017
Accredited First Aid Courses

Accredited First Aid Courses

First Aid

2017
McDonald's RTO

McDonald's RTO

Certificate III in Retail

2017
Distance Education Centre Victoria

Distance Education Centre Victoria

VCE Year 12

2015
Sage Institute of Fitness

Sage Institute of Fitness

Certificate III in Community Activity Programming

TOOLS

Languages & Tools

HOVER TO SEE PROFICIENCY LEVELS
HTML Frontend
90%
CSS Frontend
85%
JavaScript Frontend
80%
Node.js Backend
75%
Python Backend
65%
Java Backend
60%
Docker DevOps
70%
Git DevOps
85%
Figma Design
75%
Linux DevOps
70%
VS Code Tools
90%
MongoDB Database
75%
PostgreSQL Database
70%
Flutter Mobile
50%
Ruby Backend
50%
Sass Frontend
80%
Tailwind CSS Frontend
85%
Angular Frontend
60%
VueJS Frontend
65%
React Frontend
85%
C++ Backend
50%
Flask Backend
70%
LangChain AI/ML
85%
OpenAI API AI/ML
95%
AWS DevOps
65%
Jira/Linear Management
90%
PyTorch AI/ML
60%

Skills

EXPERTISE

AI Engineering

Architecting systematic prompt libraries (SPARC), building RAG pipelines, and fine-tuning LLM behavior for production environments.

Technical

Prompt Architecture

Designing complex agentic workflows, implementing TDD for AI generation, and optimizing context windows for accuracy.

Technical

Full Stack Dev

Proficient in HTML, CSS, JavaScript, and modern frameworks. I build responsive, accessible, and visually striking applications.

Technical

Backend Systems

Solid understanding of Node.js, Python, and databases. I handle server-side logic, API design, and data flow management.

Technical

Operational Resilience

10+ years in high-stakes operations taught me to build systems that don't just work when things go right, but recover when they go wrong.

Soft Skills

Technical Leadership

Bridging the gap between technical complexity and business goals. I lead teams with clarity, empathy, and a focus on shipping.

Leadership

Venture Building

Taking concepts from zero to one. I understand the full lifecycle of product development, from ideation and validation to MVP and scale.

Strategic

Process Optimization

Identifying bottlenecks in both code and human workflows. I implement systems that reduce friction and increase throughput.

Operational
MY WORK

Projects

PoliCRM Preview

PoliCRM

Automated political compliance infrastructure built in 48 hours to verify 911 members against electoral rolls.

Python FastAPI React Selenium Docker
SPARC Framework (2025) Preview

SPARC Framework (2025)

AI-assisted development workflow

AI Agents React Node.js SPARC Methodology

All Projects

Nexus (Prototype, 2025) Preview

Nexus (Prototype, 2025)

FinTech
Web App
// Oct 2024

Financial wellness platform for couples

PokerBo Preview

PokerBo

JavaScript
// Feb 2024

A casino card game that is a mix of Poker and Sicbo, created with Javascript

City Loopers Preview

City Loopers

Minecraft
// Mar 2024

A Greylisted City build Minecraft server and Discord Community administrated by me

Aometry Preview

Aometry

Discord.js
// Jul 2021

A custom and modular discord bot framework build on Discord.JS v13.

F1 Results Tracker Preview

F1 Results Tracker

Python
SQLite
// Jul 2024

A terminal application that allows users to view and track Formula 1 race results.

WeatherWise Preview

WeatherWise

Weather App
Team Project
// Dec 2024

A modern weather application that provides real-time weather updates and forecasts.

OpenNewPOS6 Preview

OpenNewPOS6

HTML/CSS
JavaScript
// Nov 2024

An educational project recreating the NP6 POS system used by McDonald's Australia.

Merry Berry Acai Preview

Merry Berry Acai

Full-stack
E-commerce
Team Project
// Feb 2025

A full-stack solution for a smoothie & aรงaรญ shop.

MunchRun Preview

MunchRun

App Development
Food Delivery
Team Project
// Apr 2020

A food delivery platform for Melbourne with zero commission for restaurants.

EdgeBrowser Preview

EdgeBrowser

Visual Basic
Legacy
Desktop App
// Aug 2012

A custom web browser built with Visual Basic in 2012.

Testimonials

REVIEWS

Testimonials Coming Soon

I'm currently collecting feedback from clients and colleagues I've worked with.
Check back soon to see what others have to say about working with me!

Worked with me before?

I'd love to hear about your experience working with me. Your feedback helps me improve and assists others in making informed decisions.

LET'S BUILD

Contact

Need an AI engineer who actually ships production systems?

I'm currently in retail management at Aldi while actively seeking AI engineering roles. Available to start with standard notice period.

Let's talk: mail@finneh.xyz

๐Ÿ“ง

Email

mail@finneh.xyz

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