Zac Wesley‑Brown

Lead full-stack developer and security researcher

Head of Software Engineering at Aotea Energy. Consultant at ZWB Consulting. Building security tooling at ZWB.SH. Auckland, New Zealand.

Get in touch →Experience

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About

Two halves of one job: find what's broken, then ship the thing that isn't.

Right now I lead software engineering at Aotea Energy, a startup making home energy storage. I joined as lead developer, built the team, and now look after product, architecture and the technical side of the business: mostly Rust and AWS.

Before that I ran penetration tests and security assessments at Quantum Security, and led development at Equity AI. Since 2018 I've consulted under ZWB Consulting for everyone from multinationals to small businesses, on both sides of the line: building systems, and testing how they fail.

Off the clock: watches and plants.

Experience

2024 – now
Head of Software Engineering
Aotea Energy · Full time
Leading the software team and shaping company strategy from the technical side. Took the core products and the home energy storage system from early versions to a product that scales in cost and in feature delivery.
- Product management
- Leadership
- Rust
- AWS
- Software design
2022 – 2024
Lead Developer
Aotea Energy · Full time
Built the software team at an early-stage startup. Proved out the first product ideas quickly, then set the software strategy and structure so the team kept its momentum.
- Node.js
- Express
- MongoDB
- AWS
- React Native
2021 – 2022
Lead Developer
Equity AI · Contract
Led development at a fast-moving AI startup, managing people and resources as well as building the product.
- Resource management
- Python
- AI/ML
- GIS
2021 – 2022
Security Consultant
Quantum Security · Full time
Penetration tests and security assessments for client businesses, with written evaluation reports on their critical issues.
- Vulnerability scanning
- Technical report writing
- AD & web exploitation
2018 – now
Consultant
ZWB Consulting · Part time / contract
Software development and security services for clients from multinationals to SMEs. Knowing how systems are built and how they break, from both sides.
- Full-stack development
- Penetration testing
- Security consulting

Education

2021 – 2024
BSc, Computer Science
University of Auckland
Focused on cyber security and machine learning. Certificates of Outstanding Achievement in Object Oriented Software Development, Software Fundamentals, and Computer Systems.

Projects

2025 – now · Founder, engineer

ZWB.SH

Security tooling studio. Pull-request review, CI audits, supply-chain reports and sandboxing for coding agents.

security
astro
cloudflare
ai

2018 – now · Consultant

ZWB Consulting

Software development and security services, from multinationals to small businesses. Audits, penetration testing and custom builds.

consulting
pentesting
full-stack

2020 · Penetration tester

Bureau of Meteorology disclosure

Found a boolean-based blind SQL injection on bom.gov.au that exposed server data and indirect paths toward remote code execution. Reported through responsible disclosure.