Senior Software Engineer - R142

About the role

At Expedition Technology (EXP), we're seeking a Senior Software Engineer to join our team. This role involves designing, building, and delivering mission-critical systems supporting the United States Government. The ideal candidate is someone who thinks beyond writing code, understands the importance of architecture, maintainable software, reliable deployment pipelines, strong observability, and operational resilience.

Responsibilities

• Design and implement scalable software systems, services, and internal tools using Python and modern engineering practices
• Lead architectural decisions across application, deployment, infrastructure, and operational domains
• Design systems with maintainability, security, resiliency, scalability, and observability as first-class concerns
• Build and improve CI/CD pipelines and deployment automation workflows
• Design, deploy, and support cloud-native applications running in containerized and Kubernetes-based environments
• Establish and champion engineering best practices around testing, automation, monitoring, reliability, and software quality
• Collaborate with software engineers, platform engineers, and mission stakeholders to deliver complete solutions
• Troubleshoot and resolve complex issues across development, deployment, and production environments
• Mentor engineers and provide technical leadership across projects and teams
• Contribute to verification, validation, testing, and evaluation environments supporting mission needs

Skills and Experience

• U.S. Citizenship - must be a US citizen to fulfill clearance requirements
• Active TS/SCI security clearance
• Bachelor's degree in Computer Science, Engineering, or a related technical discipline
• 8+ years of professional software engineering experience
• Expertise in one or more modern programming languages and the ability to quickly become productive in new technology stacks
• Strong software engineering fundamentals independent of language or framework
• Experience designing and delivering production software systems
• Strong background in software architecture, system integration, and distributed systems
• Experience building, deploying, and supporting containerized applications
• Experience deploying and operating applications in Kubernetes-based environments
• Experience building CI/CD pipelines and deployment automation solutions
• Experience implementing monitoring, logging, tracing, and observability capabilities
• Experience operating within cloud environments such as AWS
• Strong troubleshooting, communication, and technical leadership skills

Preferred Qualifications

• Infrastructure-as-Code experience using AWS CDK, Terraform, CloudFormation, or similar technologies
• GitLab CI/CD experience
• OpenTelemetry experience
• Experience supporting highly available or mission-critical systems
• Experience mentoring and developing engineers
• Experience incorporating AI-assisted development tools into engineering workflows

Why EXP?

We solve some of the nation's most challenging technical problems using modern engineering practices, cloud-native technologies, and a culture built around collaboration, autonomy, and innovation. As a Senior Software Engineer, you'll help define both the systems we build and the engineering practices we use to build them.

What We Offer

• Company-paid, medical, dental and vision insurance
• Up to 45 days of PTO
• Up to 12% 401k contribution - Traditional and Roth options available
• Student loan repayment assistance
• Paid Family Leave
• Tuition Reimbursement - $5250/year available
• Referral bonus program
• Free tickets to sporting events, theater, concerts and more
• Free, onsite fitness center, onsite cafeteria with reduced-cost meals
• A collaborative, creative and supportive culture where you will be encouraged to push boundaries, take risks and enjoy the rewards.

Equal Opportunity Employer

EXP is proud to be an Equal Opportunity Employer that believes a diverse range of talent creates an environment that fosters creativity and innovation. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, age, disability, national origin, genetic information, or protected veteran status.