About us Mantel is an Australian-owned IT Professional Services consultancy, focused on emerging technology to help advance our clients by leveragingAI, Digital, Cloud, Data & Security technology. We are a fully AI-enabled technology consultancy and the partner that bridges the gap between blue-sky ambition and practical steps to deliver value. Since our inception in November 2017, we have experienced remarkable growth across Australia & New Zealand and are honoured to be recognised as a Great Place to Work for 7 years in a row

We hire smart and talented people and get out of their way. As a principle-based organisation, we have a flat structure with no hierarchy. By focusing on our five principles and not getting caught up in red tape, we trust you to get the job done

Working in our growing cyber security capability allows you to work closely with clients across our teams. Our security capabilities span governance, risk and compliance, cyber engineering, and offensive security. We enable large-scale cyber security initiatives for our clients, and improve the protection of IT environments.

About the role As an Offensive Security Consultant at Mantel, you will be an integral part of our cybersecurity team, helping to identify and mitigate security vulnerabilities for our clients. In this role, you will conduct penetration tests, analyse security gaps and work alongside experienced professionals to improve the security posture of client systems. This is an ideal role for a detail-oriented individual looking to develop their skills in ethical hacking and security assessment.

Your day to day

Work on both large scale and targeted penetration testing projects for enterprise customers

Conduct penetration tests on client applications (web/mobile/desktop),



networks and systems to identify vulnerabilities and weaknesses

Work on a mix of blackbox, greybox and whitebox source code assisted penetration tests

Perform vulnerability assessments using various tools and techniques, then document findings and suggest remediation actions

Contribute to detailed reports that summarise findings, prioritise risks, and provide actionable recommendations for improving security

Communicate findings to clients in both technical, and clear non-technical manners and work with them to understand security requirements and potential impacts

Provide offensive security experience and recommendations across a wide range of technologies and solutions, including conducting security reviews

Stay current with the latest vulnerabilities, exploits, and cybersecurity trends. Contribute to the team’s continuous improvement efforts by researching new tools and methodologies

What you’ll need to be successful

Experience running multiple types (network/web/mobile) of penetration tests for customers

Foundational understanding of networking, operating systems, and common web application security principles. Knowledge of penetration testing tools (e.g., Burp Suite, Metasploit, Nmap) is essential

Ability to review and understand application source code to identify security issues in business logic,



authentication and authorisation, input handling, and data processing

Excellent written and verbal communication skills, with the ability to explain technical concepts to both technical and non-technical audiences

Strong analytical skills with a keen eye for identifying vulnerabilities and weaknesses in complex systems

At Mantel, we want you to be yourself. We trust our team members to use their skilled judgment while treating colleagues and clients with respect, compassion, and professionalism in alignment with our five principles

You take ownership, always stepping up to help and prioritising your teammates. You're also a clear, kind communicator who makes sound decisions based on good judgement

Highly desirable skills:

Experience in AI pen testing and using AI security tools

Ability to write code in modern programming languages

Ability to use coding skills during security testing, including writing scripts, tooling, and proof-of-concept code to support white-box and code-assisted penetration testing

What you can expect from us:

You’ll get all the tools you need to hit the ground running including a new phone, laptop & swag.

We believe in unique experiences for all. Our My Deal program allows you to tailor your yearly plan, with the support of your Leader, to decide on what’s most important to you. That might be extra professional development, extra annual leave, time to work on your side hustle, or something else completely different One size does not fit all.

Mantel is a certified Family Inclusive Workplace, which means we are committed to improving your wellbeing at work through leading practices on flex

📌 Offensive Security Consultant (Brisbane)
🏢 Mantel Group
📍 Brisbane