About Castellan Cyber
Guardians of your digital future. We build secure, innovative software with expertise and integrity.
Our Mission & Story
Castellan Cyber was born from a simple idea – startups deserve the same level of security and technical excellence as big enterprises, without the complexity. Having been deeply involved in the Brisbane startup scene since its early days, our founders saw firsthand how small companies struggled to patch together development firms and security consultants, and set out to create a better way.
We envisioned a hybrid consultancy that could guide technical strategy and also execute the vision, all while ensuring security at every step. We combine strategic insight with building power, partnering with ambitious startups and growing businesses to create intelligent software solutions with security baked in from day one.
Our mission: help you innovate faster while staying secure and compliant, so you can focus on your vision.

Why "Castellan"?
In medieval times, a Castellan was entrusted with the keys to the castle – responsible for its defense and upkeep. We chose the name Castellan because we see ourselves as guardians of our clients' digital assets, fortifying their 'castles' in the cyber world while helping them flourish.
Our Team
Our team is a tight-knit group of software engineers, AI specialists, and cybersecurity experts based in Brisbane. We've led projects in fintech, healthcare, and SaaS, bringing a wealth of experience in building secure and scalable systems.
Certifications among our staff include industry-recognized credentials in software development, cloud architecture, and security auditing. What truly unites us is a shared passion for innovation and client success.
Our Core Values
Innovation
We embrace new technologies and continuously learn, so our clients always benefit from the latest and best solutions.
Integrity
Security and ethics are non-negotiable. We operate with transparency and honesty, ensuring clients trust our guidance.
Collaboration
We work closely with your team, communicate openly, and adapt to your needs – becoming an extension of your company.
Excellence
We take pride in quality workmanship, from clean code to thorough security audits. We aim to exceed expectations.
Curious to know more or have a question for us? Feel free to reach out – we're always happy to chat about how we can help, or even just to exchange ideas about tech and security.
Let's Connect