582 Information Security Analyst jobs in Singapore

Job Title: Cybersecurity Specialist

We are seeking a highly skilled Cybersecurity Specialist to join our team. This role involves designing and implementing high-fidelity detection rules across SIEMs and EDR platforms, building custom use cases based on MITRE ATT&CK and red team insights, eliminating false positives, improving alert accuracy, and continuously optimizing detection logic.

About the Role:

• Design and implement high-fidelity detection rules across SIEMs (Splunk, Sentinel, Devo, QRadar) and EDR platforms.
• Build custom use cases based on MITRE ATT&CK and red team insights to identify and mitigate potential threats.
• Eliminate false positives, improve alert accuracy, and continuously optimize detection logic to ensure the security of our systems.
• Collaborate with red/purple teams to validate and evolve detection strategies.
• Proactively hunt for threats across hybrid environments using telemetry from SIEM, EDR, and NDR tools.
• Leverage threat intelligence and frameworks (MITRE, Diamond Model) to build and execute targeted hunting campaigns.
• Analyze and operationalize threat intel to inform detection rules and incident response.
• Lead end-to-end investigations—from triage to recovery—during security incidents.
• Conduct forensic analysis and produce detailed reports with root cause and mitigation plans.
• Develop playbooks, runbooks, and coordinate across teams and clients during major events.
• Mentor junior analysts and contribute to process automation and SOP development.
• Engage with customers through regular reviews, briefings, and incident updates.
• Drive continuous improvement through lessons learned, threat trends, and feedback loops.

Requirements:

• 8–10+ years in SOC/MSSP environments with deep SIEM (Splunk, QRadar, Sentinel, Devo) and EDR (CrowdStrike, Defender) expertise.
• Hands-on experience with SOAR platforms, malware analysis, scripting (shell, Python), and basic Unix/Linux troubleshooting.
• Strong grasp of threat detection, cyber TTPs, and frameworks like MITRE ATT&CK.
• Excellent communication skills and the ability to lead cross-functional collaboration.
• SANS certification (e.g., GCIH) strongly preferred.

Bonus Points For:

• Experience with threat hunting, vulnerability assessments, or DFIR.
• Familiarity with cloud platforms (AWS, Azure, GCP) and network security tools.
• Exposure to threat intel platforms like MISP.

Information Security Analyst (Security Operations)

Join to apply for the Information Security Analyst (Security Operations) role at Revolut

People deserve more from their money. More visibility, more control, and more freedom. Since 2015, Revolut has been on a mission to deliver just that. Our powerhouse of products — including spending, saving, investing, exchanging, travelling, and more — help our 60+ million customers get more from their money every day.

As we continue our lightning-fast growth, 2 things are essential to our success: our people and our culture. We’ve been certified as a Great Place to Work, with 10,000+ people around the world helping us achieve our mission. We’re looking for more brilliant people who love building great products, redefining success, and turning the complexity of a chaotic world into simplicity.

• Designing, developing, and deploying security rules/detections
• Independently triaging, investigating, escalating, and closing security cases
• Reviewing logs, alerts, and cases for suspicious activity and threats
• Assessing and monitoring infrastructure and remediating capability gaps
• Configuring security tools and platforms on workstations and cloud service providers
• Reporting on detection and response processes and metrics
• Assisting in developing forward-thinking security processes as needed

• 3+ years of information security experience or equivalent in relevant academic experience
• Expertise in security analysis tools and techniques, such as SIEM - ELK, EDR, Wireshark, etc.
• Hands-on experience with security response procedures and triage of incidents
• Fundamental knowledge of modern operating systems, file systems, networking, and information security
• Experience with EDR, network edge protection, web filtering, or other security tools
• Experience analysing threats according to the MITRE ATT&CK framework
• Detection and response experience within cloud environments (GCP, AWS, Azure)
• Fluency in English

• Experience with cloud, CI/CD, and containerised environments (K8s, docker, Ansible/Terraform)
• Experience with Jupyter notebooks and threat hunting
• ML and GenAI data analysis experience, such as automating security use cases
• A bachelor’s degree in a STEM subject
• A postgraduate degree in information security

• Mid-Senior level

• Full-time

• Information Technology

Important notice for candidates: Job scams are on the rise. Only apply through official Revolut channels. We won’t ask for payment or personal financial information during the hiring process. If you encounter anything suspicious, report it immediately.

• Conduct proactive threat hunting activities across various environments (endpoints, networks, cloud).
• Develop and maintain threat hunting hypotheses based on current threat intelligence and organizational risk assessments.
• Leverage various threat hunting techniques, including but not limited to, YARA rules, IOC analysis, and behavioral analysis.
• Develop custom scripts and tools to automate threat hunting processes and improve efficiency.
• Analyze security logs, network traffic, and endpoint data to identify malicious activity and potential threats.
• Investigate security incidents and provide detailed reports on findings, including root cause analysis and remediation recommendations.
• Collaborate with other security teams (incident response, vulnerability management, etc.) to share threat intelligence and coordinate security efforts.
• Develop and manage Cyber Threat Intelligence while staying up-to-date on the latest threat landscape, attack techniques, and emerging technologies.
• Present findings and recommendations to technical and non-technical audiences.
• Contribute to the development and improvement of threat hunting strategies and processes.

• Experience with cloud security (AWS, Azure, GCP).
• Relevant security certifications (e.g., SANS GIAC, GNFA, GCFA, Offensive Security, etc).

The Info Sec Prof Senior Analyst is an intermediate level position responsible for leading efforts to prevent, monitor and respond to information/data breaches and cyber-attacks. The overall objective of this role is to ensure the execution of Information Security directives and activities in alignment with Citi's data security policy.

• Identify potential information security (IS) risks and make recommendations for enhancement
• Collect and analyze security risk evidence and coordinate with internal and external compliance and auditing agencies / officials
• Execute meetings and communicate complex security topics and safe IS practices with all levels of the organization
• Ensure that controls are utilized daily and that non-compliance remediation is addressed
• Provide IS consulting services, including interpreting and/or clarifying information security policy, procedures, standards or concepts
• Assist with defining and implementing IS standards to align procedures and practices in compliance with Citi standards
• Educate and advise on safe information security practices and current, changing, and/or recommended information security requirements
• Validate compliance with IS policies, practices, and procedures, and resolve a variety of IS related issues in coordination with the business
• Assume informal/formal mentorship role within teams and assist with the coaching and training of new team members
• Has the ability to operate with a limited level of direct supervision
• Can exercise independence of judgement and autonomy
• Acts as SME to senior stakeholders and/or other team members
• Appropriately assess risk when business decisions are made, demonstrating particular consideration for the firm's reputation and safeguarding Citigroup, its clients and assets, by driving compliance with applicable laws, rules and regulations, adhering to Policy, applying sound ethical judgment regarding personal behavior, conduct and business practices, and escalating, managing and reporting control issues with transparency

• 5-8 years of relevant experience
• Applicable Certifications or willingness to earn within 12 months of joining
• Consistently demonstrates clear and concise written and verbal communication
• Proven influencing and relationship management skills
• Proven analytical skills

• Bachelor’s degree/University degree or equivalent experience

This job description provides a high-level review of the types of work performed. Other job-related duties may be assigned as required.

This position will require basic knowledge of Networking and Network perimeter devices (Subnetting, Routing, Firewall and Proxy), extensive Microsoft Excel knowledge (Pivot, VBA, Formulas, etc.), excellent data mining skills, creative thinking, strong attention to detail, and good communication skills.

• ICND 1 Certification or equivalent knowledge in Networking
• Excellent Microsoft Excel skills
• Basic Network Infrastructure knowledge
• Ability to work with Big Data
• Flexibility and ability to multi-task, seeking guidance where necessary
• Strong communication skills, including verbal and written
• Strong troubleshooting and collaboration skills
• Ability to work as part of a team with remote colleagues in other countries
• Fluency in English

• Supporting Annual Connectivity Verification process
• Validating legacy connectivity for ownership, registration, and usage
• Providing support of Business requests for Changes and validation
• Completing additional tasks in connection with the role but not detailed in the current job description, charged by the direct manager, supervisor, or the functional head

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Job Family Group: Technology

Job Family: Information Security

Time Type: Full time

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Most Relevant Skills

Please see the requirements listed above.

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Other Relevant Skills

For complementary skills, please see above and/or contact the recruiter.

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Citi is an equal opportunity employer, and qualified candidates will receive consideration without regard to their race, color, religion, sex, sexual orientation, gender identity, national origin, disability, status as a protected veteran, or any other characteristic protected by law. If you are a person with a disability and need a reasonable accommodation to use our search tools and/or apply for a career opportunity, please review Accessibility at Citi. View Citi’s EEO Policy Statement and the Know Your Rights poster.