Senior Software Engineer

The Josef Group • Chantilly, VA

32d • $250,000 - $260,000 • Onsite

About The Position

We are seeking a Senior Software Engineer to design, build, and operate highly scalable cloud-native systems supporting mission-critical national security programs. This role is ideal for an experienced engineer who thrives in hands-on development, infrastructure automation, and modern AWS-based architectures. You will work onsite in Chantilly, VA alongside a highly technical team delivering secure, resilient, and high-performance solutions in a classified environment.

Requirements

• 13+ years of professional software engineering experience
• Bachelor's degree in Computer Science, Engineering, or a related technical field
• Expert-level Python experience (this is the core language for the role)
• Strong hands-on experience with AWS , including services such as: Lambda, EC2, S3, DynamoDB EventBridge, Step Functions IAM, Organizations, CloudWatch
• Strong Terraform experience managing complex, production AWS infrastructure
• Experience building and consuming HTTP REST APIs
• Strong Linux/UNIX experience
• Experience with containers and Docker
• Familiarity with distributed systems, cloud networking, and security best practices
• TS/SCI and Poly Required

Nice To Haves

• Serverless architecture experience at scale
• Experience working in classified or regulated environments
• Exposure to global scaling, load balancing, and high-availability architectures
• CI/CD tooling experience (e.g., Jenkins, GitLab CI, ArgoCD)

Responsibilities

• Design, develop, and maintain production-grade Python services supporting backend systems and APIs
• Architect and deploy AWS-based cloud solutions , leveraging serverless and managed services
• Build and maintain Infrastructure as Code (IaC) using Terraform across multiple environments
• Develop and integrate RESTful APIs and event-driven architectures
• Implement cloud-native patterns for scalability, availability, observability, and fault tolerance
• Collaborate with cross-functional engineering teams to deliver secure, reliable solutions
• Support CI/CD pipelines and automate deployment workflows
• Troubleshoot, optimize, and enhance system performance in Linux-based environments

What This Job Offers

• Job Type: Full-time
• Career Level: Senior