To our valued Leidos candidates:

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With that in mind, in an abundance of caution, we are canceling all face to face career events, such as job fairs and open house events. In the coming days and weeks, we will be hosting career events virtually, using our online chat tools so that we may continue our hiring practice safely and securely. You can find available virtual career events at

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Job #: R-00061837
Location: Adelphi, US
Category: Software Development
Schedule (FT/PT): Full Time
Travel Required: Yes, 10% of the time
Shift: Day
Potential for Telework: No
Clearance: Secret
Referral Eligibility: Eligible
Referral Bonus Amount: $3000
Group: Defense

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Job Description:

Leidos is seeking a Software Developer to provide software development support to C5ISR Center Sustaining Base Network Assurance Branch (SBNAB) Defensive Cyber Operations (DCO) Security Operations Center (SOC). Beyond advising and guiding technical matters, this position is tasked with driving implementation and adoption of new tools, research, capabilities, frameworks, and methodologies while developing, testing, documenting, and delivering systems software to meet client needs in compliance with functional, security, and privacy requirements.

This position is located at Adelphi, MD and requires an active Secret with ability to obtain TS/SCI clearance.

Primary Responsibilities

  • Identify and offer solutions to gaps in capabilities and visibility

  • Troubleshoots coding / configuration / installation issues of basic to medium complexity.

  • Supports the development of detailed specifications and engage in application design and data modeling discussions.

  • Participate in developing and enforcing data security policies.

  • Participate in capacity monitoring and planning. Build, maintain and execute unit test cases with high code coverage.

  • Responsible for sound and high quality technical deliverables.

  • Analyze and estimate timelines for sprints and releases.

  • Work in an Agile environment and adapt to the changing needs and requirements of the business.

  • Develop and fix issues with highest quality.

  • Work closely with team members to create test plans, and ensure the issues are properly identified, fixed and tested.

  • Develop all code incorporating the best practices.

  • Craft and extend a variety of application programming interfaces for analytic platforms serving cybersecurity operations.

  • Create, implement, update, and sustain several cyber analysis user interface tools with a heavy reliance on a variety of API mechanisms for current DoD clients. Working collaboratively with a small development operations (DevOps) based project team.

  • Responsible for several interfaces across a variety of cybersecurity operational capabilities with a focus on data-driven analytics, situational awareness, and agent-based actions. Proactively learn product frameworks and code base.

  • Hands on working with ElasticSearch backend, including querying and aggregation for building simple and complex summaries of data.

  • Working with SCALA and JAVA created user interfaces as part of a larger big data analytics type framework supporting cybersecurity operations.

  • Design and implement new API features and functionality, as well as updating current API capabilities based on mission need.

  • Building RESTful API for web single page application/s.

  • Analyze requirements from clients to derive software design and performance requirements.

  • Engineer requirements from clients into new features and functionality.

  • Designing and writing new software or existing software to add new features.

  • Debugging existing software and correcting defects.

  • Write and review software system documentation and integrate existing software into new or modified systems or operating environments.

  • Test and maintain code base and adjust to varying development schedules as dictated by project needs.

Basic Qualifications

  • Bachelor's degree or equivalent experience with 4+ years of professional experience designing and developing new features or functionality for web-based applications

  • 3+ years of API development experience.

  • Proven experience working across multiple tiers of an application, including backend data store (database, Elasticsearch), network, operating system, and virtual environments. Proficiency with Scala and Java is a must.

  • Proficiency with ReactJS, NodeJS, JavaScript. Proficiency with Elasticsearch API.

  • Experience with Spring and Play Frameworks.

  • Understanding of NoSQL databases and JSON. Experience with application servers (Jetty, etc.).

  • Experience with Python.

  • Excellent object-oriented design and programming skills.

  • Must be a US Citizen.

  • Candidate must possess an active DoD Secret clearance and be eligible to obtain a TS/SCI clearance.

  • Must hold IAT Level II 8570 Certification prior to start date.

  • Must hold Computing Environment Certification prior to start date.

  • Must hold CSSP Infrastructure Support 8570 Certification or obtain within 45 days of start date.

Preferred Qualifications

  • Understanding of core current cybersecurity technologies as well as emerging capabilities.

  • People skills and the ability to communicate effectively with various clients with the ability to explain and elaborate on technical details

  • Motivated self-starter with strong written and verbal communication skills


External Referral Eligible

External Referral Bonus:


External Referral Bonus $:


Potential for Telework:


Clearance Level Required:



Yes, 10% of the time

Scheduled Weekly Hours:




Requisition Category:


Job Family:

Software Development

Pay Range:

About Leidos

Leidos is a Fortune 500® information technology, engineering, and science solutions and services leader working to solve the world’s toughest challenges in the defense, intelligence, homeland security, civil, and health markets. The company’s 40,000 employees support vital missions for government and commercial customers. Headquartered in Reston, Virginia, Leidos reported annual revenues of approximately $12.30 billion for the fiscal year ended January 1, 2021. For more information, visit

Pay and Benefits

Pay and benefits are fundamental to any career decision. That's why we craft compensation packages that reflect the importance of the work we do for our customers. Employment benefits include competitive compensation, Health and Wellness programs, Income Protection, Paid Leave and Retirement. More details are available here.

Securing Your Data

Leidos will never ask you to provide payment-related information at any part of the employment application process. And Leidos will communicate with you only through emails that are sent from a email address. If you receive an email purporting to be from Leidos that asks for payment-related information or any other personal information, please report the email to [email protected].

Commitment to Diversity

All qualified applicants will receive consideration for employment without regard to sex, race, ethnicity, age, national origin, citizenship, religion, physical or mental disability, medical condition, genetic information, pregnancy, family structure, marital status, ancestry, domestic partner status, sexual orientation, gender identity or expression, veteran or military status, or any other basis prohibited by law. Leidos will also consider for employment qualified applicants with criminal histories consistent with relevant laws.

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