Senior Software Engineer

Responsibilities

• Participate in the development of military planning tools, including models and simulations written primarily in Python and C++. Tasks span object‑oriented design, algorithm design, implementing algorithms from design specifications, code refactoring, software testing, and associated documentation.
• Conduct research, studies, and analysis to provide supporting data and recommendations for DoD decision makers.
• Develop and deliver formal technical presentations to sponsors and the engineering community.
• Effectively communicate proposed concepts, solutions, and analysis results.
• Produce documentation capturing concept definitions, requirements, analysis results, and technical recommendations.

Requirements

• Bachelor's degree in Computer Science, Computer Engineering, Software Engineering, or a related engineering field.
• 5+ years of experience with Python, C++, or other similar programming languages.
• Experience implementing software from requirements.
• Ability to rapidly implement novel solutions and evaluate their efficacy.
• Desire to collaborate within a team of scientists and engineers addressing new engineering challenges.
• Project leadership experience.
• Excellent critical thinking and strong organizational skills.
• Strong written, verbal, and interpersonal communication when coordinating with team members, sponsors, and users.
• Willingness to meet with military warfighters to understand their needs and priorities.
• Willingness to travel up to 5% as needed.
• Eligibility to obtain an Interim Secret security clearance by start date and eventual Secret clearance. Must be a U.S. citizen and willing to undergo a government security clearance investigation.

Technologies

• Python
• C++

Benefits

• Education assistance program
• Retirement contributions
• Work/life balance
• Medical insurance
• Dental insurance
• Vision insurance
• Life insurance
• Short-term disability
• Long-term disability
• Flexible spending accounts
• Training and development
• Sign-on bonus (subject to internal policy)
• Relocation benefits
• Locality allowance

Description

APL software engineers contribute to nationally important defense programs by developing software for planning tools and prototypes used by warfighters. The role emphasizes prototyping with Python and C++ and collaboration with sponsors and end users to deliver actionable capabilities.

About Us

The Johns Hopkins University Applied Physics Laboratory (APL) applies world‑class expertise to defense, security, space, and science challenges. APL cultivates a collaborative culture, offers robust benefits, and supports professional growth. The campus is located in the Baltimore–Washington metro area. Learn more about career opportunities at the APL careers page.

Salary: USD 105,000 - 290,000 per year

Location: Laurel, MD (onsite)