Senior Security Data Engineer

The Role:

Halcyon is building the most resilient anti-ransomware platform on the market, and we need a Senior Security Data Engineer to power our data infrastructure. You'll be responsible for building and maintaining the robust data pipelines that ingest, process, and deliver critical security data, which powers our decisions and analytics.

In this role, you'll implement and operate large-scale data systems that handle large volumes of behavioral, network, file, and product signals. You'll ensure our teams have reliable, real-time access to the data they need to protect our customers from ransomware attacks.

This is a hands-on engineering role focused on building production-grade data infrastructure. You'll work with varied security data to optimize for both performance and reliability, and directly enable our product's defensive capabilities through robust data operations.

Responsibilities:

• Design, build, and maintain scalable data pipelines for ingesting security data from endpoints, networks, and threat intelligence sources
• Implement and optimize both batch and real-time streaming data processing systems to support detection and prevention workflows
• Ensure data quality, reliability, and availability across all security data platforms and services
• Build and maintain data storage solutions optimized for high-volume security telemetry and fast query performance
• Collaborate with security researchers and product teams to understand data requirements and deliver reliable data services
• Monitor and troubleshoot data pipeline performance, implementing automated alerting and recovery systems
• Establish data governance processes and implement security controls for sensitive threat data
• Optimize data infrastructure costs while maintaining performance and reliability standards

Required Skills and Qualifications:

• 5+ years of experience in data engineering, with a focus on large-scale data systems and operations
• Strong proficiency in Python, SQL, and distributed data processing frameworks (Spark, Kafka, etc.)
• Proven experience building and maintaining production data pipelines that handle high-volume, high-velocity data
• Expertise with cloud data platforms (AWS, GCP, or Azure) and infrastructure-as-code practices
  
• Experience with data storage solutions, including data lakes, warehouses, and more
• Strong understanding of data quality, monitoring, and operational best practices
• Familiarity with containerization (Docker, Kubernetes) and CI/CD practices
• Cybersecurity domain knowledge

Bonus Skills and Qualifications:

• Experience with security data formats and sources (SIEM, EDR, network logs, threat feeds)
• Familiarity with Elastic/OpenSearch and other data platforms
• Background in stream processing frameworks (Kafka Streams, Apache Flink, etc.)
• Experience with modern data architecture patterns
• Knowledge of compliance requirements for security data handling

 Halcyon offers the following benefits to eligible employees:

• Comprehensive healthcare (medical, dental, and vision) with premiums paid in full for employees and dependents.

• 401k plan with a generous employer contribution.

• Short and long-term disability coverage, basic life, and AD&D insurance plans.

• Medical and dependent care FSA options.

• Flexible PTO policy.

• Parental leave.

• Generous equity offering.

The Company reserves the right to modify or change these benefits programs at any time, with or without notice.​

Base Salary Range: $140,000 - $190,000

Bonus Target: 10%