DevOps Engineer

About the Company

Twenty was founded to make our adversaries think twice before attacking. We industrialize offensive cyber operations for the U.S. and its allies, headquartered in Arlington, Virginia.

Role Summary

We are seeking a DevOps Engineer / Software Engineer â Infrastructure for an in-office position in our Arlington, VA office focused on infrastructure and reliability. This position is at the crossroads of software engineering, operations, and security.

What You'll Do

• Design, build, and operate AWS-based infrastructure.
• Implement and maintain Infrastructure-as-Code for single-tenant and multi-tenant environments using Terraform.
• Build and maintain deployment and environment automation (Ansible or similar).
• Own and evolve CI/CD pipelines.
• Design, implement, and refine observability: metrics, logs, traces, dashboards, and alerting.
• Partner with application teams on architecture decisions, performance tuning, and operational readiness.
• Contribute to security and governance: IAM policies, network security, secrets management, and security scanning.
• Document systems, patterns, and runbooks so others can operate and extend the platform reliably.

Must Haves

• Experience administering infrastructure and operating applications deployed on AWS.
• Experience using Terraform to manage single-tenant and multi-tenant systems.
• Strong instincts and practical experience with:
• IP networking (VPCs, routing, subnets, proxies, DNS).
• Network security (security groups, NACLs, firewalls).
• PKI management (TLS certificates, CAs, mTLS, certificate lifecycle).

Should Have

• Experience with Ansible or another deployment automation/configuration management framework.
• Experience with GitHub Actions or another CI/CD platform (GitLab CI/CD, CircleCI, etc.).
• Experience working on reliability projects, such as:
• Setting up alert management tools and on-call practices.
• Debugging failures in distributed systems.

Benefits

• Health. Medical, dental, and vision plan options. Life / AD&D, disability coverage options.
• Family. Paid parental leave for eligible full-time employees. 12 weeks for birthing parents, 4 for non-birthing parents, 6 weeks for adoptive, foster, or intended parents through surrogacy.
• Vacation. Paid holidays and flexible PTO. Take what you need.
• Retirement. 401(k) with pre-tax and Roth options. HSA/FSA options, dependent care FSA.
• At the office. Commuter benefits. On-site garage parking. Bike storage. Building fitness center. Desk setup stipend.

Qualifications

• Experience administering infrastructure and operating applications deployed on AWS.
• Experience using Terraform to manage single-tenant and multi-tenant systems.
• Strong instincts and practical experience with:
• IP networking (VPCs, routing, subnets, proxies, DNS).
• Network security (security groups, NACLs, firewalls).
• PKI management (TLS certificates, CAs, mTLS, certificate lifecycle).