Senior Security Analyst

This position will be posted for a minimum of five calendar days internally. All internal applicants are required to inform your current supervisor/manager prior to applying. Internal applicants are required to be in "good standing" in your current role, which is defined as a performance rating of “met all objectives” or higher. You cannot be on a current performance improvement plan or written warning for any reason and must have been in your current role for a minimum of 6 months, unless otherwise approved for an early transfer by your current leader and the People Department.

Your opportunity

This role will focus on Cyber Incident Response and Vulnerability Management

Incident response and management

• Perform alert triage of security alerts to validate and prioritise incidents.
• Determine severity, impact, and root cause of incidents using MSSP and internal tools.
• Conduct initial triage and assessment of incidents to determine severity and impact.
• Monitor and respond to security alerts and events generated by security tools and technologies, including SIEM, IDS/IPS, firewalls, email, and endpoint detection and response (EDR) systems, in a timely manner meeting SLAs.
• Perform routine reviews of IAM to identify and address abuse of permissions by authorised users.
• Monitor for policy violations and report suspicious user behaviour.
• Assist in isolating affected systems to contain threats under supervision.

Reporting, documentation, and communication

• Work notes and artefact logging in ITSM (ServiceNow / Confluence) incident tickets.
• Facilitate handovers to other SOC team members at the end of a shift, ensuring a smooth transition of ongoing incidents.
• Provide clear and timely updates to other SOC members and escalation points.
• Seek guidance from and escalate where necessary to Mid-level Tier 2 analysts.

Vulnerability Management

• Support daily security operations, by conducting regular vulnerability scans, analyze resulting reports and triage identified issues to ensure timely risk mitigation. Lead the end‑to‑end process of identifying, assessing, and coordinating the remediation of vulnerabilities across applications, infrastructure, and cloud environments, working closely with development and operations teams to implement effective and sustainable security controls.
• Optimize vulnerability scanning profiles, dashboards, and reports to ensure comprehensive coverage and actionable insights, while analyzing data to prioritize risks and provide clear remediation guidance.
• Contribute to the continuous improvement of vulnerability management processes, policies, and procedures, including supporting incident response activities and aligning with industry best practices.

Other

• Stay up-to-date on the latest cyber security threats, vulnerabilities, and attack techniques.
• Participate in on-call rotations and provide triage and escalation support.
• Flexible working hours may require scheduled work on weekends and/or holidays, including being on-call.
• Participate in handling queries from the security inbox, ensuring timely response to security-related inquiries.
• Carry out other duties as assigned

What to expect when you join our firm

• Hybrid working and reasonable accommodations
• Generous Holiday policies
• Excellent Health and Wellbeing benefits including corporate membership to Wellhub
• Paid volunteer time to step away from your desk and into the community
• Support to grow through professional development courses, tuition/qualification reimbursement and more
• Maternal/paternal leave benefits and family services
• Unique employee events and programs including a 14er challenge
• Complimentary beverages, snacks and all employee Happy Hours

Must have skills

• 2+ years in an Information Security role with proven experience in Security Operations or Threat Analysis roles
• Proven hands-on experience with SIEM and EDR platforms
• Analytical mindset and knowledge of TTPs, malware behaviour, and incident handling methodologies.
• Familiarity with IAM concepts and monitoring — able to review user permissions, detect abuse, and flag suspicious behaviour or policy violations.
• Experience performing alert triage and incident escalation within defined SLAs, using ITSM tooling such as ServiceNow and documentation platforms such as Confluence.
• Strong collaboration skills working with application and infrastructure teams within a security context
• In-depth working knowledge of security best practices and frameworks (e.g., MITRE ATT&CK, OWASP Top 10, NIST)
• Excellent written and verbal communication skills, with the ability to produce clear work notes, handover reports, and stakeholder updates.
• Ability to manage multiple projects and tasks.
• Analytical ability to capture and summarise information, find solutions to various tactical and strategic problems and prioritise work
• Exposure to public cloud infrastructure (SaaS, IaaS, and PaaS)

Nice to have skills

• 1+ years of experience within Incident Response and/or Security Operations
• Scripting or automation experience (e.g., Python, PowerShell, KQL) to enhance SOC playbooks, enrich alerts, or reduce manual triage effort.
• Exposure to SOAR platforms and use-case development for automating repeatable response actions.
• Experience working alongside an MSSP or within a co-managed SOC model.
• Familiarity with Threat Intelligence platforms (e.g., OpenCTI, Recorded Future, MISP) and applying CTI to detection and hunting.
• Relevant Information Security certifications (e.g. CompTIA Security+, CySA+, CEH, SANS, Cloud Certifications).

Supervisory responsibilities

• No

Potential for growth

• Mentoring
• Leadership development programs
• Regular training
• Career development services
• Continuing education courses

Compensation information

The base salary range for this position is $110k to $120k. This range is estimated for this role. Actual pay may be different. This position will be open through November 15, 2026.

Colorado law requires an estimated closing date for job postings. Please don't be discouraged from applying if you see this date has passed.

At Janus Henderson Investors we’re committed to an inclusive and supportive environment. We believe diversity improves results and we welcome applications from candidates from all backgrounds. Don’t worry if you don’t think you tick every box, we still want to hear from you! We understand everyone has different commitments and while we can’t accommodate every flexible working request, we’re happy to be asked about work flexibility and our hybrid working environment. If you need any reasonable accommodations during our recruitment process, please get in touch and let us know at View email address on aiapply.co.

#LI-LN2 #LI-Hybrid

Annual Bonus Opportunity: Position may be eligible to receive an annual discretionary bonus award from the profit pool. The profit pool is funded based on Company profits. Individual bonuses are determined based on Company, department, team and individual performance.

Benefits: Janus Henderson is committed to offering a comprehensive total rewards package to eligible employees that includes; competitive compensation, pension/retirement plans, and various health, wellbeing and lifestyle benefits. To learn more about our offerings please visit the Why Join Us section on the career page here.

Janus Henderson Investors is an equal opportunity employer . All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability or veteran status. All applications are subject to background checks.

Janus Henderson (including its subsidiaries) will not maintain existing or sponsor new industry registrations or licenses where not supported by an employee’s job functions (as determined by Janus Henderson at its sole discretion).

You should be willing to adhere to the provisions of our Investment Advisory Code of Ethics related to personal securities activities and other disclosure and certification requirements, including past political contributions and political activities. Applicants’ past political contributions or activity may impact applicants’ eligibility for this position.

You will be expected to understand the regulatory obligations of the firm, and abide by the regulated entity requirements and JHI policies applicable for your role.