Jobs and Careers

Software Engineer Sr - E3

King of Prussia, United Statesfull_timeVerifiedPosted 15 Aug 2026

💰 $204,900/yr($110,300/yr – $204,900/yr)

About the role

Standard Job Description

Plans, conducts, and coordinates software development activities. Designs, develops, documents, tests, and debugs software that contains logical and mathematical solutions to business/mission problems or questions in computer language for solutions by means of data processing equipment. Applies the appropriate standards, processes, procedures, and tools throughout the development life cycle. Applies knowledge of computer hardware and software, subject matter to be programmed in business/mission applications, information processing techniques used, and information gathered from system users to develop software. Corrects program errors, prepares operating instructions, compiles documentation of program development, and analyzes system capabilities to resolve questions of program intent, output requirements, input data acquisition, programming techniques, and controls. Ensures software standards are met.

Basic Qualifications

• Programming Languages/scripting - JavaScript/Node, C#
• Modern Web Frameworks - Angular/React/Vue.js/Ember.js
• GitLab pipeline for software project
• Currently active Top Secret security clearance, with SCI eligibility
• Agile scrum experience and proficiency with Agile tools (Jira, Version One, Confluence)

Desired Skills

• 3+ years of professional front end development experience with React (hooks, functional components) or Angular (components, services, RxJS)
• Deep understanding of client side architecture and best practices for performance, accessibility, and responsive design
• Proven expertise in state management (e.g., Redux, MobX, NgRx, Context API, RxJS) and ability to design scalable, maintainable data flows
• Strong proficiency in HTML5, CSS3 (Flexbox/Grid, preprocessors/Sass), and modern JavaScript/TypeScript standards (ES6+)
• Experience building single page applications (SPAs) with routing, lazy loading, and code splitting techniques
• Familiarity with UI component libraries (Material UI, Ant Design, Bootstrap) and ability to create custom, reusable components
• Comfortable writing unit and integration tests for UI code (Jest, React Testing Library, Karma/Jasmine) and using CI pipelines for front end validation
• Ability to collaborate closely with UX/UI designers, back end engineers, and product owners to translate requirements into polished UI features
• Strong problem solving mindset, attention to detail, and commitment to code quality (linters, style guides, code reviews)
• Excellent communication skills and a proactive attitude toward learning emerging front end technologies and trends.
• Experience working in a Top Secret environment

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Pay Information

Full-Time Salary Range: $110300.00 - $204900.00

At Lockheed Martin, we know mission success starts with taking care of our people. Our Total Rewards program is designed to attract top talent, support your well-being, and help you grow—both professionally and personally.

The salary range for this position is as listed on the requisition. Please note that the salary information listed is a general guideline only. Lockheed Martin considers factors such as (but not limited to) scope and responsibilities of the position, candidate's work experience, education/ training, key skills as well as market(work location) and business considerations when extending an offer.

Benefits offered: Medical, Dental, Vision, Flexible work arrangements and schedules (e.g., 4x10), 401(k) match, Paid time off, Holidays, Parental Leave, EAP, Flexible Spending Accounts, Education Assistance, Life Insurance, Short-Term Disability, and Long-Term Disability.

Annual short-term and/or long-term incentive compensation programs may be offered depending on the position. Payments under these annual programs are not guaranteed and can vary from year to year and are tied to a range of performance metrics.
For (Washington state applicants only) Non-represented full-time employees: accrue at least 10 hours per month of Paid Time Off (PTO) to be used for incidental absences and other reasons; receive at least 90 hours for holidays. Represented full time employees accrue 6.67 hours of Vacation per month; accrue up to 52 hours of sick leave annually; receive at least 96 hours for holidays. PTO, Vacation, sick leave, and holiday hours are prorated based on start date during the calendar year.