Cyber Security Engineer

Twenty-posted 4 months ago

Full-time • Mid Level

Washington, DC

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Twenty is seeking an innovative Associate Cyber Security Research Engineer for an in-office position in its Arlington, VA office with strong research skills, software development, and offensive security expertise to join our mission of defending democracies. In this role, you'll develop and automate sophisticated attack paths, leverage machine-speed data processing, and create tools that advance our cyber and electromagnetic capabilities. We're looking for someone who combines practical development skills with a deep understanding of adversarial techniques to help build the next generation of cyber technologies for the United States and its allies.

Design and implement sophisticated attack paths that emulate real-world adversary behaviors and TTPs
Create modular, reusable components for common attack techniques and lateral movement methods
Develop custom tools and scripts to support attack path execution and validation
Research and evaluate diverse data sources for enhancing attack path effectiveness
Implement data enrichment pipelines to augment existing datasets with threat intelligence
Automate common red team tools and techniques for scalable deployment
Develop custom extensions and modules for industry-standard red team frameworks
Create efficient workflows for repetitive security testing procedures
Design and implement parsers for various data formats including logs, network traffic, and threat feeds
Create ETL pipelines for processing security-relevant data at scale
Develop standardized schemas for structured and unstructured security data
Build data validation and cleansing mechanisms
Implement efficient storage and retrieval systems for processed data

3+ years of threat research and coding experience
Deep understanding of the MITRE ATT&CK framework with practical experience mapping and implementing common adversary TTPs
Proven experience operating industry-standard threat emulation platforms and command & control frameworks, including development of custom payloads and modules
Track record of integrating and analyzing threat intelligence data sources to enhance detection and response capabilities
Demonstrated proficiency in implementing and detecting advanced persistence mechanisms, defense evasion techniques, and counter-forensic methods
Strong containerization experience using Docker, including creating secure, production-ready containers and managing multi-container applications with Docker Compose
Advanced programming skills in Python and/or Golang, with emphasis on developing security tools and automation frameworks
Experience writing complex graph queries and traversals for analyzing relationships in large datasets, preferably with Neo4j or similar graph databases
Strong background in API development and integration, including designing, implementing, and consuming RESTful services with proper security controls
Comprehensive knowledge of cybersecurity principles including network security, application security, and secure coding practices
Practical experience in offensive cyber operations, including payload development, post-exploitation, and lateral movement techniques
Demonstrated expertise in red team methodologies, including campaign planning, OPSEC considerations, and adversary emulation based on real-world threats

Track record of delivering complex technical solutions in defense or security contexts
Experience with AI/ML integration in operational systems
Background in developing tools for cyber operators or security analysts
Experience with large-scale data processing and analysis
Experience with Agile development methodologies
System architecture and design experience
Performance optimization and scalability experience
Open-source contributions or personal projects demonstrating relevant skills

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