Senior Security Engineer - Elastic SIEM and Detection Engineering

Acronis•Burlington, MA

2d•$123,000 - $180,000•Remote

About The Position

Acronis is seeking a Senior Security Engineer to lead their Elastic SIEM and Detection Engineering program. This is an engineering-focused role responsible for building scalable detection pipelines, enhancing telemetry quality, and developing high-confidence detections to improve security team efficiency and response times. The role involves owning the evolution of the Elastic Security environment, including log ingestion, platform optimization, Detection-as-Code pipelines, and detection coverage strategy. It's suited for individuals who enjoy system building, signal quality improvement, workflow automation, and solving large-scale detection engineering challenges. While primarily an engineering role, it also includes serving as a Tier 2 escalation point for complex security events, assisting with incident scoping, initiating containment, and refining detections based on real-world activity. This position offers significant ownership and the opportunity to influence detection engineering practices across the organization.

Requirements

5+ years of cybersecurity engineering experience
3+ years focused on SIEM engineering, detection engineering, or security analytics
Strong hands-on experience with Elastic Security and the Elastic Stack
Experience building or maintaining Detection-as-Code workflows using Git and CI/CD pipelines
Strong understanding of detection tuning, alert fidelity, and operational detection quality
Ability to independently investigate complex alerts and produce actionable findings
Technical Experience: Elastic Security, Kibana, Fleet, Elastic Agents, EQL/KQL
Detection engineering and MITRE ATT&CK mapping
Jenkins, Bitbucket Pipelines, GitHub Actions, or similar CI/CD tooling
Python and/or PowerShell scripting
AWS CloudTrail, VPC Flow Logs, Azure Monitor, or similar telemetry sources
TCP/IP, DNS, HTTP/S, and common attack patterns
Threat intelligence enrichment and operationalization

Nice To Haves

SOAR playbook development and automated response workflows
Sigma rule development
Elastic detection-rules ecosystem familiarity
Terraform or Ansible experience
Previous SOC or Incident Response background

Responsibilities

Own and optimize the Elastic Security platform (Elasticsearch, Kibana, Fleet, Logstash, Elastic Agents)
Design and maintain ingestion pipelines for cloud, endpoint, network, and application telemetry
Improve telemetry quality, data retention, performance, and investigation workflows
Integrate SIEM workflows with SOAR and automation tooling
Build and maintain a Detection-as-Code pipeline using Git-based workflows and CI/CD automation
Develop, test, tune, and maintain high-fidelity detections using Elastic Security, EQL, and KQL
Reduce alert noise through tuning, enrichment, suppression, and exception handling
Map detections to MITRE ATT&CK and help drive detection coverage strategy
Track detection quality metrics including alert fidelity, false positive rates, and coverage gaps
Assist with complex alert escalations and perform initial incident scoping
Execute initial containment actions when necessary (endpoint isolation, IP/domain blocking, account suspension)
Participate in a low-frequency on-call rotation for critical incidents
Translate incident learnings into improved detections and telemetry coverage
Partner with infrastructure, DevSecOps, and cloud teams to improve logging and visibility
Build automation and tooling using Python and/or PowerShell
Support purple team exercises and adversary simulations