Senior Software Engineer (Python / AWS / Terraform)

Location: Onsite – Chantilly, VA
Clearance: TS/SCI and Poly Required 
Compensation: $250,000–$260,000 base salary

Overview

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.

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Key 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

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Required Qualifications

• 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

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Nice-to-Have Skills

• 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)