Senior Machine Learning Engineer - Security

Atlassian · Bengaluru · 3+ yrs experience · Posted 2025-09-16

Tech stack: Python, SQL

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About the role

Overview We’re expanding our Threat Detection Engineering team at Atlassian to incorporate cutting-edge machine learning techniques into our security detection capabilities. We're seeking a talented security professional with a strong background in machine learning to join our team. This role involves developing and deploying machine learning models to identify emerging threats, enhancing our detection systems, and collaborating with cross-functional teams to elevate our security posture. While extensive experience in both security detection and machine learning is ideal, we also welcome candidates with strong machine learning expertise who are eager to apply their skills to the security domain. A proven track record of leading complex technical projects and excellent collaboration and communication skills are essential. Working at Atlassian Atlassians can choose where they work – whether in an office, from home, or a combination of the two. That way, Atlassians have more control over supporting their family, personal goals, and other priorities. We can hire people in any country where we have a legal entity. Interviews and onboarding are conducted virtually, a part of being a distributed-first company. Responsibilities Develop and implement advanced threat detection mechanisms using machine learning models to identify and alert on adversarial or high-risk behaviours within Atlassian’s systems. Continuously improve and fine-tune machine learning models and detection systems to adapt to new and emerging cyber threats. Monitor and enhance critical detection systems to ensure their reliability and effectiveness in delivering robust detection capabilities. Deploy and integrate new detection technologies and machine learning models to continuously uplift and improve our detection capabilities. Collaborate with partner teams, including Incident Response and Threat Intelligence, to establish and maintain meaningful security alerts. Ensure security alerts are relevant, actionable, and aligned with the overall security strategy. Work closely with Product Engineering, Data Platform, and Security Engineering teams to advance our detection coverage and tooling in our production cloud environments. Automate complex security operational tasks to streamline and optimize routine security activities. Stay informed about the latest security trends, emerging threats, and evolving technologies to ensure Atlassian is well-prepared to adapt to new security challenges. Engage in continuous learning and remain abreast of industry developments to inform the company's security strategy. Qualifications Bachelor's degree in Computer Science, Information Security, Data Science, or a related field. Minimum 3 years of experience in roles related to machine learning, with a strong interest in applying these skills to threat detection. Proven experience developing and deploying machine learning models for various use cases is must. Experience or interest in building effective detection capabilities in modern cloud environments. Proficiency in languages such as Python, SQL, or similar, with experience in building automation. Familiarity with security detection technologies and systems, such as firewalls, intrusion detection systems, EDR, and authentication systems, is a plus. Strong analytical skills with the ability to identify and resolve complex problems. Demonstrated ability to lead and deliver complex projects. Excellent collaboration and communication skills, with the ability to work effectively in a distributed team environment.

Qualifications

- Bachelor's degree in Computer Science, Information Security, Data Science, or a related field.
- Minimum 3 years of experience in roles related to machine learning, with a strong interest in applying these skills to threat detection.
- Proven experience developing and deploying machine learning models for various use cases is must.
- Experience or interest in building effective detection capabilities in modern cloud environments.
- Proficiency in languages such as Python, SQL, or similar, with experience in building automation.
- Familiarity with security detection technologies and systems, such as firewalls, intrusion detection systems, EDR, and authentication systems, is a plus.
- Strong analytical skills with the ability to identify and resolve complex problems.
- Demonstrated ability to lead and deliver complex projects.
- Excellent collaboration and communication skills, with the ability to work effectively in a distributed team environment.

Responsibilities

- Develop and implement advanced threat detection mechanisms using machine learning models to identify and alert on adversarial or high-risk behaviours within Atlassian’s systems.
- Continuously improve and fine-tune machine learning models and detection systems to adapt to new and emerging cyber threats.
- Monitor and enhance critical detection systems to ensure their reliability and effectiveness in delivering robust detection capabilities.
- Deploy and integrate new detection technologies and machine learning models to continuously uplift and improve our detection capabilities.
- Collaborate with partner teams, including Incident Response and Threat Intelligence, to establish and maintain meaningful security alerts.
- Ensure security alerts are relevant, actionable, and aligned with the overall security strategy.
- Work closely with Product Engineering, Data Platform, and Security Engineering teams to advance our detection coverage and tooling in our production cloud environments.
- Automate complex security operational tasks to streamline and optimize routine security activities.
- Stay informed about the latest security trends, emerging threats, and evolving technologies to ensure Atlassian is well-prepared to adapt to new security challenges.
- Engage in continuous learning and remain abreast of industry developments to inform the company's security strategy.

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