Principal / Sr. Principal Software Engineer Backend

Northrop Grumman
San Diego, CA

Architect and develop custom, maintainable ETL solutions from the ground up using Python, SQLAlchemy, and SQL Server. Develop and optimize data storage solutions, including relational and NoSQL databases. Write and maintain tests and documentation for data architecture, workflows, and processes. Collaborate closely with data scientists, analysts, and other software engineers to understand data requirements and deliver robust, integrated solutions. Champion software engineering best practices within the data domain, including comprehensive unit/integration testing, CI/CD automation (Git, Docker), and robust documentation. Tune and optimize complex SQL queries and data processing workflows within our on-premise infrastructure. Bachelor's degree in Computer Science, Software Engineering, or related field, with 5 years of related engineering experience, OR Master's degree in Computer Science, Software Engineering, or related field, with 3 years of related engineering experience Proficiency in SQL for relational databases (MSSQL, PostgreSQL, MySQL, or similar). Familiarity with CI/CD pipelines and version control (e.g., Git, Docker, etc). Your ability to obtain and maintain a government Top Secret clearance and any program access(es) required for the position within a reasonable period of time, as determined by the company Principal Software Engineer: Bachelor's degree in Computer Science, Software Engineering, or related field, with 8 years of related engineering experience, OR Master's degree in Computer Science, Software Engineering, or related field, with 6 years of related engineering experience OR a PhD in Computer Science, Software Engineering, or related field with 4 years of related engineering experience. Recent professional experience in backend software development and/or data engineering. Strong programming skills in Python and SQL. Proficiency in SQL for relational databases (MSSQL, PostgreSQL, MySQL, or similar). Familiarity with CI/CD pipelines and version control (e.g., Git, Docker, etc). Your ability to obtain and maintain a government Top Secret clearance and any program access(es) required for the position within a reasonable period of time, as determined by the company Master's degree in Computer Science or Software Engineering. 7 years of experience in software development. Experience with C/C++. Experience with machine learning pipelines and data science workflows. Knowledge of data warehousing concepts and tools. Familiarity with SQL Alchemy, Numpy, Pandas. Hands-on experience with cloud services (AWS, GCP, Azure) for data engineering. Ability to troubleshoot and optimize complex data queries and workflows. Familiarity with data warehousing concepts, machine learning pipelines, and MLOps. Excellent problem-solving skills with the ability to troubleshoot and optimize across the entire data stack. Ability to work in a fast-paced environment.

Posted 2026-02-28

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