Senior Threat & Attack Researcher

Job Description

The Senior Threat & Attack Researcher researches emerging cyber threats, attack techniques, vulnerabilities and adversary behaviour to strengthen Optus security capabilities. The role typically requires substantial experience in threat intelligence, penetration testing, red teaming, malware or attack research, along with strong knowledge of networking, cloud environments, operating systems and security frameworks. Candidates should be comfortable analysing complex technical information, developing detection or mitigation strategies, writing clear reports and presenting findings to technical and business stakeholders. Practical experience with security tools, scripting, incident response and threat modelling is valuable. The successful candidate is expected to work independently, collaborate across cyber-security teams and continuously improve the organisation's ability to anticipate and respond to sophisticated attacks.

Company Info

Optus is one of Australia's largest telecommunications and digital services companies and is part of the Singtel Group, headquartered in Singapore. It provides mobile and fixed-line communications, broadband, entertainment, business technology, cloud, cyber-security and managed services to consumers, enterprises and government customers. Optus operates a large national network and supports millions of customers across Australia. Its technology and security teams work on resilient communications infrastructure, digital platforms, data protection and threat prevention. The company employs people across major Australian locations, including Canberra, Sydney, Melbourne, Brisbane, Adelaide and Perth. As part of Singtel, Optus has access to regional expertise and international technology partnerships. Its work environment generally combines large-enterprise processes with opportunities to contribute to telecommunications innovation, digital transformation and critical infrastructure protection.

Destination Guide

Australia offers strong opportunities in cyber-security, telecommunications, cloud computing, engineering, healthcare, construction, education and professional services. Major technology employment centres include Sydney, Melbourne, Canberra, Brisbane and Perth; Canberra is particularly well known for government and national-security work. Australian workplace culture is generally professional, direct and collaborative, with emphasis on inclusion, safety and work-life balance. Lifestyle varies from energetic city living to relaxed coastal or regional communities, with excellent beaches, outdoor activities, sport and multicultural food. Housing costs are high in Sydney and Melbourne, while Canberra and other cities may offer a more manageable balance. Skilled migrants commonly use employer-sponsored visas, skilled independent or state-nominated pathways, depending on occupation, qualifications and points. Before relocating, check current Department of Home Affairs requirements, skills assessments, health checks and police clearances. Secure employment, accommodation, tax arrangements and health insurance before arrival where possible.