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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Software Engineer/Principal Software Engineer - **Company:** Northrop Grumman - **Location:** El Segundo, CA, United States - **Salary:** $91,800.0 - $137,600.0 - **Contract:** Permanent contract - **Skills:** .NET Framework, Application Programming Interfaces (APIs), Airflow, Applications Architecture, Application Integration Architecture, Business Logic, User Authentication, Automation of Tests, C Sharp (Programming Language), Configuration Management, Code Review, Databases, Continuous Integration, Relational Databases, Software Debugging, Human-Computer Interaction, Python (Programming Language), Microsoft SQL Server, Standard Sql, Software Deployment, Software Engineering, Systems Integration, Web Applications, Web Services, Enterprise Software Applications, Backend, SC Clearance, Front End Software Development, Api Design, Software Version Control, Programming Languages, Crud - **Published:** October 27, 2026 - **Apply:** https://www.clearancejobs.com/jobs/9276682/software-engineerprincipal-software-engineer ## About the Role * Bachelor's degree with 1 year of technical and/or engineering experience, or a Master's degree with 0 years of experience * Ability to work 1st shift "5am-3:30pm" or 2nd shift "4:12pm-2:42am" and/or any work schedule (times may vary) * Hands-on experience developing software in one or more modern programming languages * Experience developing a web application that includes a user interface, application or business logic, APIs or services, and a relational database * Experience implementing data-backed CRUD workflows, validation rules, authorization controls, or comparable business-process functionality * Practical knowledge of SQL and relational data modeling, including schemas, keys, relationships, and normalization * Experience integrating an application with databases, external data sources, enterprise systems, or other services * Experience using version control and applying testing, debugging, documentation, deployment, and release practices to a working software solution * This position requires the ability to obtain and maintain a U.S. Government Secret or Top-Secret Clearance as well as Program Special access within a reasonable period, as determined by the company to meet its business needs * Ability to work for extended periods of time at a workstation on a computer or similar device for up to 10 hours / duration of shift. Occasional extended periods of standing, bending, kneeling * Ability to travel at least 10%, * Bachelor's degree with 4 years of technical and/or engineering experience, or a Master's degree with 3 years of engineering experience, or PhD with 0 years of experience * Ability to work 1st shift "5am-3:30pm" or 2nd shift "4:12pm-2:42am" and/or any work schedule (times may vary) * Advanced experience designing, developing, testing, deploying, and sustaining production web applications in one or more modern programming languages * Experience defining application architecture, user-interface and service boundaries, APIs, data models, integration patterns, security controls, and nonfunctional requirements for maintainable solutions * Demonstrated success delivering greenfield web applications where requirements, platforms, data contracts, or integration endpoints were incomplete or did not exist * Experience designing data-backed workflows that implement validation, authorization, business rules, and maintainable CRUD operations * Experience integrating applications with relational databases and multiple external systems, services, or data sources * Experience establishing technical direction, resolving ambiguous requirements, and coordinating delivery across users and technical stakeholders * Ability to communicate architecture, security, performance, risks, dependencies, and tradeoffs to technical and management audiences * This position requires the ability to obtain and maintain a U.S. Government Secret or Top-Secret Clearance as well as Program Special access within a reasonable period, as determined by the company to meet its business needs * Ability to work for extended periods of time at a workstation on a computer or similar device for up to 10 hours / duration of shift. Occasional extended periods of standing, bending, kneeling * Ability to travel at least 10%, * STEM degree in a related field * Experience developing data-intensive, workflow, engineering, manufacturing, or operational web applications * Experience with modern front-end, back-end, or full-stack web-development frameworks; no specific framework is required * Experience with API design, web services, authentication and authorization, event-driven integration, or distributed application patterns * Experience selecting or evaluating application technologies based on maintainability, security, deployment constraints, performance, team accessibility, and user needs * Experience with automated testing, code review, CI/CD, configuration management, monitoring, and production deployment * Experience integrating applications with manufacturing measurement, equipment, sensor, process, quality, engineering, or enterprise-system data * Experience with Python, Microsoft SQL Server, Apache Airflow, C#, .NET or comparable technologies * Experience mentoring developers or reviewing software designs and implementations * Active U.S. Government Secret or higher security clearance ## Description * Design and develop data-backed web applications that support manufacturing analysis and digitized operational processes * Build user interfaces, APIs, services, and CRUD workflows through which engineering and manufacturing teams can create, validate, retrieve, update, and maintain data and technical context * Implement application and business logic that guides users through operational workflows and maintains data quality and consistency * Integrate web applications with relational databases, enterprise systems, analytical services, equipment or sensor data sources, and other technical interfaces * Apply sound software-engineering practices across architecture, implementation, testing, security, deployment, monitoring, documentation, and sustainment