Senior Security Engineer - Monitoring & Detection (Splunk)

Location: Any UK office hub: Bristol, London, Manchester, or Swansea; part-time remote working is available. Occasional work outside standard Monday-to-Friday hours may be required during release and maintenance windows or to align with client operating hours.

Salary: £55,000–£85,000 per year

Company

hirify.global helps UK public sector organisations build and run secure, trustworthy, and resilient digital services.

What you will do

• Build and tune detection rules across Splunk SPL, YARA, and EDR platforms.
• Map detections to MITRE ATT&CK, monitor signal quality, and reduce false positives.
• Validate rules through replay, load testing, and red-team scenarios while collaborating with L1–L3 analysts.
• Manage Cribl log ingestion, including routing, filtering, normalisation, enrichment, deduplication, and NetFlow summarisation.
• Manage streaming and storage across Kinesis, S3, and Amazon Security Lake, applying OCSF, data tiering, encryption, and least-privilege access.
• Translate technical risk for government stakeholders and system owners while mentoring junior and mid-level engineers.

Requirements

• Senior-level, hands-on security engineering experience across detection engineering, SIEM, log ingestion, or cloud security.
• Experience with AWS, Azure, or GCP cloud security.
• Advanced Splunk SPL, YARA, and EDR detection logic, or experience with Cribl, Kinesis, S3, Amazon Security Lake, and OCSF data normalisation.
• Strong understanding of Zero Trust, identity-first security, secrets management, and network segmentation.
• Experience working with or alongside UK Government or public sector stakeholders.
• Eligibility for SC clearance requires five years of UK residency and a five-year employment history, or records back to full-time education.

Culture & Benefits

• 30 days of paid annual leave.
• Flexible working hours and part-time remote working.
• Flexible parental leave.
• Flexible benefits platform with Smart Tech, Cycle to Work, healthcare cash plan, and pension options.
• Paid counselling plus financial and legal advice.
• Optional social and wellbeing events and support with reasonable adjustments during the application process.