Software Engineer

Introduction: 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 Software Engineer

Job Summary: Work as a software engineer supporting several projects building Java based web applications and prototyping future IT systems.


  • Software development: building Java based web and/or enterprise (J2EE – Java enterprise Edition) applications, implementing Java based Web services, consuming external web services, and writing unit tests. (80%)
  • Perform general software/systems analysis and design tasks including execution of concept-to-delivery system design processes (detailed design, implementation, testing and documentation) in an agile system/software development environment. (20%)

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. or equivalent in Computer Science, Information Systems, or other related technical discipline. Proficient in the Java programming language. Minimal 3 years of web application and web services implementation and deployment experience with Java. Extensive experience in software development, modern design patterns and web technologies using multi-tier architectures. Experience with development environments that leverage Java, Spring framework application servers, multi-threading. Experience with modern web technologies, JavaScript libraries, AJAX, JSON, HTML5/CSS3 and responsive design. Exposure to backbone.js, ember.js, angular.js or other MV* frameworks. Since the system is going to be developed using Agile principles, strong communication skills both verbal and written, and effectiveness in a team environment are essential.

Desired Qualifications: M.S. in Computer science, Information Systems or other related technical discipline. Fluent in Unified Modeling Language (UML) and design patterns. Experience with Geographic Information System (GIS) technologies such as Google Maps API, Google Earth, Cesium, etc. are strongly desired. Knowledge of implementing contract-first based Java web services is preferred. Familiarity with building Java Web services using JAX-WS (Java API for XML Web Services) or Apache Axis and deploying in various Java environments such as Weblogic, Tomcat, JBoss is desired. Knowledge of interfacing with relational database like Oracle/ SQL server and No SQL (Mongo DB, neo4J). Knowledge of agile methodology (scrum, kanban), unit testing continuous integration (such as CruiseControl), and version control tools (such as Git or Apache Subversion SVN).

Special Working Conditions: US travel is required, not likely to exceed a few trips per year with no more than five days in duration for each.

Security: TS/SCI Clearance is required. Applicants selected will be subject to a Government security investigation and must meet the eligibility requirements for an SSBI and access to Sensitive Compartmented Information. Preference for current SSBI. Eligibility requirements include US 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.

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