> Markdown version of [/jobs/ext/4150719-sr-principal-engineer-software](https://www.wearedevelopers.com/jobs/ext/4150719-sr-principal-engineer-software). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Sr Principal Engineer Software - **Company:** Northrop Grumman - **Location:** Bellevue, NE, United States - **Experience:** Expert - **Salary:** $129,300.0 - $193,900.0 - **Contract:** Permanent contract - **Skills:** Java (Programming Language), Systems Engineering, Unit Testing, C++ (Programming Language), Cloud Engineering, Profiling, Continuous Integration, Relational Databases, Software Debugging, Linux, Distributed Systems, JSON, Junit, PostgreSQL, MySQL, Performance Tuning, RabbitMQ, Mockito, Ansible, Prometheus, Standard Sql, Secure Coding, Security Software, Service Discovery, Software Engineering, Software Systems, Systems Integration, Data Logging, Java Application Server, Grafana, Spring-boot, Gitlab, Containerization, Integration Tests, Kubernetes, Infrastructure Automation Frameworks, Apache Kafka, Api Gateway, Restful APIs, Terraform, Stream Processing, Devsecops, Docker, Static Application Security Testing, Microservices, Dynamic Application Security Testing - **Published:** October 27, 2026 - **Apply:** https://www.clearancejobs.com/jobs/9276750/sr-principal-engineer-software ## About the Role The ideal candidate will have a strong foundational knowledge of software engineering and be able to collaboratively apply systems engineering principles to define, develop, test, debug, and document software solutions across the program., * Experience developing software in Java * Experience building services or microservices using Spring Boot * Experience with containerization technologies such as Docker or Podman * Experience with Kubernetes for container orchestration and deployment * Experience with GitLab and CI/CD pipelines for automated build, test, and deployment * Experience developing software in a Linux environment * Experience with RESTful APIs and JSON-based interfaces * Experience with unit testing and integration testing (e.g., JUnit, Mockito) * Familiarity with relational databases (e.g., PostgreSQL, MySQL) and basic SQL * Experience using debugging tools and techniques for Java and Linux (e.g., IDE debuggers, jstack, jmap, strace, gdb, log-based debugging) * Effective written and verbal communication skills * Must have an active U.S. Government Secret security clearance at time of application, current and within scope * 8 years with a Bachelors in Science, 6 years with a Masters in Science degree, and 3 years with the PHD. 4 additional years required in lieu of a degree Preferred Qualifications: * Experience with cloud-native or on-premise distributed systems * Experience designing and implementing microservice architectures * Experience with message-based or streaming systems (e.g., Kafka, RabbitMQ) * Experience with API gateways and service discovery mechanisms * Experience with infrastructure-as-code tools (e.g., Ansible, Terraform, Helm) * Experience with monitoring, logging, and observability for containerized applications (e.g., Prometheus, Grafana, ELK/EFK stack) * Experience performing root-cause analysis in distributed systems using logs, traces, and metrics * Experience with profiling and performance tuning of Java applications (e.g., VisualVM, JFR, JMC, async profilers) * Experience implementing robust logging and error-handling strategies to support production debugging * Experience with secure coding practices and basic understanding of cybersecurity principles * Experience with Agile/Scrum software development methodologies * Experience integrating with C/C++ or other languages in mixed-technology systems * Experience working on real-time or mission-critical systems, such as radar, command and control, or other defense-related applications * Familiarity with DevSecOps practices and automated security/scanning in CI/CD (e.g., SAST/DAST tools)