Principal Software Engineer

At MITRE, your passion fuels work that impacts our nation and improves lives. This is where your skills strengthen national security, cybersecurity, health, transportation, and citizen services. We’re a nonprofit engineering, applied research, and advanced technology organization working in the public interest. With objectivity and integrity at our core, we lead federally funded research and development centers for U.S. government agencies – collaborating with industry and academia to deliver integrated, high-impact solutions that advance our nation’s health, security, and prosperity. Our people tackle the toughest technical challenges, supported by competitive benefits, meaningful career development, and a culture of innovation, collaboration, and technical excellence. Choose MITRE for a career with purpose — and help shape the future.The MITRE Corporation’s National Space Program operates at the intersection of technological innovation and deep domain expertise. Our mission is to engineer end-to-end solutions for organizations developing, deploying, and operating next-generation space capabilities. By leveraging systems engineering, advanced analytics, and cross-cutting research, we mitigate risk and accelerate modernization across the entire space life cycle. Ultimately, the National Space Program serves as a foundation for global mission assurance. By reinforcing the digital and physical infrastructure underpinning space superiority, we empower operators to execute their objectives with absolute confidence—ensuring the success of critical national security, civil, and defense missions.Roles & Responsibilities:Deliver modern software capabilities, improving architecture, platforms, and developer workflows with strong engineering practices (secure coding, reviews, testing, maintainable design).Partner with UX, Architecture, Data, Security, and Operations to define technical strategy and influence roadmaps with a customer-centric mindset.Champion architectural excellence (cloud-native, event-driven, microservices where appropriate) across AWS/Azure, balancing long-term vision with pragmatic execution.Design and integrate backend services and RESTful APIs, ensuring reliable data flows for mission workflows and downstream consumers.Build and operate data pipelines (ETL/ELT) for ingestion, transformation, validation, and publishing to analytics and operational APIs (including Airflow orchestration as needed).Develop and optimize data models, SQL, and database access patterns (PostgreSQL/MongoDB), including migrations and data quality strategies.Implement containerized deployments with Docker/Kubernetes, including configuration, deployment patterns, and troubleshooting.Engineer DevSecOps/CI/CD pipelines with security and quality gates and repeatable release processes.Provision and manage Linux environments using Infrastructure as Code (Terraform/Ansible) for reproducible dev/test/prod deployments.Communicate clearly via high-quality design docs/RFCs and runbooks; lead architecture reviews, incident response, post-incident learning, and compliance/observability integration (e.g., Splunk); mentor engineers and raise standards through reviews and design sessions.Basic Qualifications:Typically requires a minimum of 10 years of related experience with a Bachelor’s degree; or 8 years with a Master’s degree; or 5 years with a PhD; or an equivalent combination of education and relevant experience.Strong Python development experience with modern software engineering practicesExperience building distributed systems in AWS or multi-cloud environmentsExperience with containerization and orchestration technologies (Docker, Kubernetes)Experience implementing DevSecOps and CI/CD pipelinesExperience designing and integrating RESTful APIs and data pipelinesFamiliarity with databases such as PostgreSQL or MongoDBExperience with Linux environments and Infrastructure as Code (Terraform, Ansible)Experience with modern web technologies (React, JavaScript, HTML/CSS)Ability to work in Agile development environments with strong documentation practicesMust have an active Top Secret/SCI w/Poly U.S Government issued Security Clearance. Per the U.S. Government’s eligibility requirements, you must be a U.S Citizen to be considered for a security clearance.This position has an on-site requirement of 5 days a week on-sitePreferred Qualifications:Advanced degree in a technical discipline (including but not limited to Software Engineering, Computer Science, Computer Engineering, Mathematics, etc.)Experience delivering software in compliance-aligned environments and hardening systems to standards such as NIST 800-171 and/or NIST 800-53, including producing audit-ready evidenceExperience building and operating AWS data platforms (e.g., Glue, EMR) and implementing automated data quality validation and monitoringExperience with workflow orchestration and streaming/event platforms such as Airflow and/or KafkaExperience with cloud automation and Infrastructure as Code beyond baseline use (e.g., reusable Terraform modules, AWS CDK patterns, environment promotion strategies)Experience with observability platforms such as Splunk, including onboarding data sources, parsing, dashboards, and alerting to support security/compliance and operational readinessExperience supporting mission analysis, test and evaluation, operational systems, and/or integration with external mission partners or vendor solutionsExperience with simulation environments such as AFSIMExperience administering or operating production systems (applications, databases, and/or networks), including incident response practices and reliability improvementsExperience using agentic software development tools and technologies, including Codex / ChatGPT, Cursor, Windsurf, or other similar models and agent-based toolsThis requisition requires the candidate to have a minimum of the following clearance(s):Top Secret/SCI/PolygraphThis requisition requires the hired candidate to have or obtain, within one year from the date of hire, the following clearance(s):Top Secret/SCI/PolygraphSalary compensation range and midpoint:$173,200 - $216,500 - $259,800 AnnualWork Location Type:OnsiteCommitment to Non-DiscriminationAll qualified applicants will receive consideration for employment without regard to disability, status as a protected veteran or any other status protected by applicable federal, state, local or international law.MITRE intends to maintain a website that is fully accessible to all individuals. 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