{"id":3946230,"url":"https://alion.io/job/northrop-grumman-sr-principal-data-scientist-machine-learning-and-predictive-analytics","title":"Sr. Principal Data Scientist – Machine Learning and Predictive Analytics","company":{"id":12494,"name":"Northrop Grumman","domain":"northropgrumman.com","url":"https://alion.io/company/northropgrumman","size_band":"5000+","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Workday","truth_index":{"grade":"B","score":80,"open_postings":501,"ghost_share":0.006,"stale_share":0.764,"repost_share":0.022,"time_to_fill_p50_days":27,"computed_at":"2026-11-10T06:52:35Z"}},"role":"Data Science","role_family":"Data Science","seniority":"lead","employment_type":"full_time","work_mode":"hybrid","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["San Diego, United States"],"countries":["US"],"hiring_countries":[],"hiring_countries_total":0,"salary":{"min":156400,"max":234600,"currency":"USD","period":"year","gross":null,"usd_annual":234600},"salary_estimate":null,"experience_years_min":8,"visa_sponsorship":false,"relocation_package":true,"has_equity":false,"technologies":[{"name":"CI/CD","optional":false},{"name":"Docker","optional":false},{"name":"Git","optional":false},{"name":"Machine Learning","optional":false},{"name":"Python","optional":false},{"name":"SQL","optional":false},{"name":"C++","optional":true},{"name":"NumPy","optional":true},{"name":"Pandas","optional":true},{"name":"PyTorch","optional":true},{"name":"SQLAlchemy","optional":true}],"status":"live","first_seen_at":"2026-11-08T20:41:01Z","employer_posted_date":"2026-11-08","last_verified_at":"2026-11-10T07:55:37Z","board_verified":true,"closed_at":null,"days_open":1,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":1},"description":"RELOCATION ASSISTANCE: Relocation assistance may be availableCLEARANCE REQUIRED FOR START: NoCLEARANCE TYPE: Top SecretTRAVEL: Yes, 25% of the TimeDescription\nAt Northrop Grumman, our employees have incredible opportunities to work on revolutionary systems that impact people's lives around the world today, and for generations to come. Our pioneering and inventive spirit has enabled us to be at the forefront of many technological advancements in our nation's history - from the first flight across the Atlantic Ocean, to stealth bombers, to landing on the moon. We look for people who have bold new ideas, courage and a pioneering spirit to join forces to invent the future, and have fun along the way. Our culture thrives on intellectual curiosity, cognitive diversity and bringing your whole self to work - and we have an insatiable drive to do what others think is impossible. Our employees are not only part of history, they're making history.Northrop Grumman is seeking an experienced, Senior Principal Data Scientist to support our Product Support Analytics and Innovation team onsite in Rancho Bernardo, California.\nThis position is required full-time, in-office. Hybrid scheduling (time split between in-office and work-from-home) may become available depending on future project needs.\nAccomplish\nWe are seeking a first-principles thinker and skilled data scientist to solve complex data challenges. This is not a role for operating pre-built tools; this is an opportunity to architect and build the core data logic of our systems. You will be responsible for creating custom, high-performance statistics and machine learning tools from the ground up, making meaning of complex data sets. Your work will involve deep data modeling, abstracting reusable patterns, and writing modular, maintainable code that stands the test of time.\nEssential Functions:\nCollaborate closely with software engineers, analysts, and other data scientists to understand data requirements and deliver robust, integrated solutions.\n\nArchitect and develop custom, maintainable data science solutions from the ground up.\n\nWrite and maintain tests and documentation for data architecture, workflows, and processes.\n\nChampion software engineering best practices within the data domain, including comprehensive unit/integration testing, CI/CD automation (Git, Docker), and robust documentation.\n\nTune and optimize complex algorithms within our on-premise infrastructure.\n\nSucceed:\nThe individual we seek will be self-motivated, proactive, goal-oriented to help us grow our services, become even better at what we do and will possess the following qualifications.\nBasic Qualifications:\nBachelor’s Degree in a Science, Technology, Engineering or Mathematics discipline from an accredited university, with a minimum of 8 years of relevant experience, OR Master in STEM with 6 years of relevant experience, OR PhD/Doctorate degree in STEM with 4 years of relevant experience.\n\nDeep understanding of Machine Learning and Deep Learning.\n\nRecent professional experience in software development and/or data engineering.\n\nStrong programming skills in Python and SQL.\n\nFamiliarity with CI/CD pipelines and version control (e.g., Git, Docker, etc.)\n\nMust have the ability to obtain and maintain a US Government Top Secret clearance and Special Access Program (SAP) within a reasonable amount of time as determined by business needs.\n\nPreferred Qualifications:\nMaster’s degree or higher, in Data Science or related discipline.\n\nExperience with C/C++.\n\nExperience with machine learning pipelines and data science workflows.\n\nFamiliarity with SQL Alchemy, Numpy, Pandas, SKLearn, PyTorch.\n\nAbility to troubleshoot and optimize complex data queries and workflows.\n\nFamiliarity with big data concepts, machine learning pipelines, and MLOps.\n\nExcellent problem-solving skills with the ability to troubleshoot and optimize across the entire data stack.\n\nAbility to work in a fast-paced environment.\n\nCurrent, Active, DoD Top Secret clearance.\n\nThrive with Us\nAt Northrop Grumman we are invested in the growth and well-being off all our employees. We offer flexible work arrangements, phenomenal learning opportunities, exposure to a wide variety of projects and customers, and a very friendly team environment.\nOur Total Rewards Program offers a comprehensive employee benefits package, including a Retirement and Savings Plan, group medical, dental and vision coverage, life and disability insurance, and flexible spending accounts.\nPrimary Level Salary Range: $156,400.00 - $234,600.00The above salary range represents a general guideline; however, Northrop Grumman considers a number of factors when determining base salary offers such as the scope and responsibilities of the position and the candidate's experience, education, skills and current market conditions.Depending on the position, employees may be eligible for overtime, shift differential, and a discretionary bonus in addition to base pay. Annual bonuses are designed to reward individual contributions as well as allow employees to share in company results. Employees in Vice President or Director positions may be eligible for Long Term Incentives. In addition, Northrop Grumman provides a variety of benefits including health insurance coverage, life and disability insurance, savings plan, Company paid holidays and paid time off (PTO) for vacation and/or personal business.The application period for the job is estimated to be 20 days from the job posting date. However, this timeline may be shortened or extended depending on business needs and the availability of qualified candidates.Northrop Grumman is an Equal Opportunity Employer, making decisions without regard to race, color, religion, creed, sex, sexual orientation, gender identity, marital status, national origin, age, veteran status, disability, or any other protected class. For our complete EEO and pay transparency statement, please visit http://www.northropgrumman.com/EEO. 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