Software Engineer


The Johns Hopkins University Applied Physics Laboratory (APL), a national leader in scientific research and development, located midway between Baltimore and Washington, DC is seeking a Mid-Level Software Engineer.

Job Summary: Lead and participate in the development of advanced network security concepts, as well as the software to realize these concepts.

Duties (Listed in order of importance with the estimated amount of time spent at each task):

  • Lead capabilities development efforts employing software development life cycle principles along with strong analytic skills, and developing software implementations supporting advanced network security concepts addressing operational challenges. (40%)
  • Participate in the design, development, adaptation, testing, and integration of software supporting the realization of advanced network security capabilities. (40%)
  • Develop documentation describing the design and operation of advanced network security capabilities. (15%)
  • Engage and collaborate with other technical leaders within APL, peer organizations, and sponsors. (5%)

Note: This job summary and listing of duties is for the purpose of describing the position and its essential functions at time of hire and may change over time.

Required Qualifications: B.S. in Computer Science, Computer Engineering, or equivalent. 8 years experience in the full-life-cycle development of software systems for computer network systems security applications. In-depth knowledge of computer programming languages, especially C and C, as well as experience with scripting languages such as Python and Perl. Understanding of computer architectures and assembly language. Active TS clearance.

Desired Qualifications: M.S. in Computer Science, Computer Engineering, or equivalent. 10 years experience in the full-life-cycle development of software systems for cyber security applications. Experience providing technical leadership in an advanced software development or cyber security research organization. Understanding of compiler internals including intermediate representations and code generation, assemblers, linkers, loaders, object file formats, and debuggers. Active TS/SCI clearance.

Special Working Conditions: N/A

Security: Applicant selected will be subject to a government security clearance investigation and must meet the requirements for access to classified information. Eligibility requirements include U.S. citizenship.

Benefits: APL offers a comprehensive benefits package including a liberal vacation plan, a matching retirement program, significant educational assistance, a scholarship tuition program for staff with dependents, and competitive salaries commensurate with skills and experience. For more information about our organization, please visit our web site at

Equal Employment Opportunity: Johns Hopkins University/Applied Physics Laboratory (APL) is an Equal Opportunity/Affirmative Action employer that complies with Title IX of the Education Amendments Acts of 1972, as well as other applicable laws. All qualified applicants will receive consideration for employment without regard to race, color, religion, sexual orientation, gender identity, national origin, disability, or protected Veteran status.

Meet Some of Johns Hopkins Applied Physics Laboratory's Employees

Gianni P.

Electrical Engineer

Gianni works on the design, modeling, and simulation of low- to high-fidelity radar projects for the lab. He also conducts tests to evaluate new technologies.

Mary A.

Lead RF Systems Engineer

Mary Ann builds prototypes and integrates software and hardware communications in order to create complete systems for APL contracts and projects. She also collaborates with her team to fix software issues.

Back to top