Software Engineer

National Security Group · Ft. Meade, Maryland
Department National Security Group
Employment Type Full-Time
Minimum Experience Mid-level

S4 (Systems & System Software Solutions, LLC) has a career opportunity for a Systems Engineer.  The candidate MUST  be a U.S. Citizen and have a Top Secret/SCI security clearance with polygraph to be considered for the position. S4, LLC is a privately held company working with federal customers since 1998. S4 offers a competitive compensation package to include full employee benefits. Location of this position is in the Fort Meade, MD vicinity. 

This Software Engineer will develop, maintain, and enhance complex and diverse software systems (e.g., processing-intensive analytics, novel algorithm development, manipulation of extremely large data sets, real-time systems, and business management information systems) based upon documented requirements. Works individually or as part of a team. Reviews and tests software components for adherence to the design requirements and documents test results. Resolves software problem reports. Utilizes software development and software design methodologies appropriate to the development environment. Provides specific input to the software components of system design to include hardware/software trade-offs, software reuse, use of Commercial Off-the-shelf (COTS)/Government Off-the-shelf (GOTS) in place of new development, and requirements analysis and synthesis from system level to individual software components.



  • Seven (7) years’ experience as a Software Engineer, in programs and contracts of similar scope, type, and complexity is required.
  • A Bachelor’s Degree from an accredited college or university in Computer Science or related discipline.  An additional four (4) years of experience on projects with similar software processes may be substituted for a bachelor’s degree.
  • Experience working with the customer or stakeholder to define, document, and implement system requirements.
  • The ability to create and execute test cases for peer code testing.


Shall possess the following capabilities:

  • Analyze user requirements to derive software design and performance requirements.
  • Debug existing software and correct defects.
  • Provide recommendations for improving documentation and software development process standards.
  • Design and code new software or modify existing software to add new features.
  • Integrate existing software into new or modified systems or operating environments.
  • Develop simple data queries for existing or proposed databases or data repositories.
  • Develop or implement algorithms to meet or exceed system performance and functional standards
  • Assist with developing and executing test procedures for software components
  • Write or review software and system documentation
  • Develop software solutions by analyzing system performance standards, confer with users or system engineers; analyze systems flow, data usage and work processes; and investigate problem areas
  • Serve as team lead at the level appropriate to the software development process being used on any particular project
  • Modify existing software to correct errors, to adapt to new hardware, or to improve its performance
  • Design, develop and modify software systems, using scientific analysis and mathematical models to predict and measure outcome and consequences of design
  • Design or implement complex database or data repository interfaces/queries


Experience with the following technologies is required or desired:

  • Windows OS, Required (2 years)
  • SQL, Required (2 years)
  • Unix/Linux OS, Required (2 years)
  • JAVA or C++, Required (2 years)
  • Groovy on Grails or Similar Technologies, Required (6 months)
  • DoJo Service or Similar Technologies, Required (6 months)
  • HTML, (2 years)
  • CSS, Desired
  • JSP, Desired
  • JavaScript, Required (2 years)
  • AJAX, Desired
  • Spring framework, Desired
  • JEE technologies, Desired
  • Developing Web Services (SOAP and REST), Required (6 months)
  • XML tools (e.g., XPATH, XQUERY, DOM, SAX, XSLT), Desired
  • IIS, Desired
  • APACHE, Desired
  • CASPORT, Desired
  • Public Key Infrastructure (PKI), Required (6 months)


Security Clearance: TS/SCI with an appropriate agency Polygraph is required.


U.S. Citizenship is required.


Thank You

Your application was submitted successfully.

  • Location
    Ft. Meade, Maryland
  • Department
    National Security Group
  • Employment Type
  • Minimum Experience