Sr. Software Engineer TSSCI Poly

Leidos

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profile Job Location:

Alexandria, VA - USA

profile Monthly Salary: $ 131300 - 237350
Posted on: 10 hours ago
Vacancies: 1 Vacancy

Job Summary

Job Description

Leidos has an exciting opportunity for a Sr. Software Engineer! *Must have an active TS/SCI Polygraph up front. No exceptions.*

You will perform software development lifecycle (SDLC) activities as both an individual and a member of our top-notch agile development team building a large complex enterprise system. Development includes the full range of turning Agile user stories into implementable concepts through development unit testing integration and test and deployment of the new capabilities for the large complex enterprise system. Following the Behavior-driven Development (BDD) pattern developers are responsible for implementing robust testing leveraging DevOps automation and where appropriate use of test automation commercial tools. There are a range of opportunities for server-side business logic implementation as well as client web application and user interface (UI) development. Java Python embedded C/C Java cryptographic framework XML web UI (i.e. Angular JavaScript CSS HTML etc.) and special purpose device programming opportunities are available.

Primary Responsibilities

You will actively participate in daily stand-ups Sprint Planning Program Increment (PI) Planning and other related team activities; analyze and study complex system requirements use design software tools provide support using formal specifications data flow diagrams and other accepted design techniques and will use sound software engineering principles to ensure that developed code is modifiable efficient reliable understandable fault tolerant and reusable. You will provide software process management and control throughout the coding portion of the software development process and will promote code reuse and cross-program collaboration while reducing maintenance costs by creating common functions and shared actions for developers and testers. You will engineer author tune and document automation scripts in a development environment and deploy to the test/production bench.

Basic Qualifications

Must have a BS degree and 12 15 years of prior relevant experience or Masters with 10 13 years of prior relevant experience. Additional experience may be substituted for a degree.

Must have demonstrated experience with Java.

Must have experience or familiarity with multiple Java frameworks: Spring to include Boot and Data Java Enterprise Edition (JEE) (i.e. JPA EJB JTA Servlet) Jackson Jersey Swing JavaFX.

Must have experience or familiarity with multiple of the following languages such as Javascript Python C/C Groovy Structured Query Language (SQL).

Must have experience with development IDEs (Integrated Development Environments) such as Eclipse Visual Studio Code Visual Studio Rhapsody WebStorm.

Must have experience with databases such as Oracle PostgreSQL MongoDB SQL Server.

Must have experience with Web Application User Interface Development knowledge of databases and structures Spring Framework and/or experience working with AngularJS JSON HTML XML XSLT.

Must have experience with software source control and configuration management tools.

Must have experience with technologies underlying cryptographic systems (symmetric and asymmetric cryptography ASN.1 encoding XML canonicalization digital signatures).

Must have experience developing on Windows and/or Linux operating systems.

Must have documented professional experience with web services.

Must have a strong understanding of sound software development principles and practices.

Must be able to plan and prioritize personal tasking and be able to communicate effectively verbally and in writing.

Must be an independent thinker capable of performing high quality work both independently and with a team in a fast-moving environment.

Preferred Qualifications

Experience with the following: Java Enterprise Edition (JEE) (i.e. EJB JPA JTA JAX-B JAX-RS JAX-WS) SQL application servers (Tomcat WebLogic JBoss) Spring framework scripting.

Experience or familiarity with multiple of the following technologies: XML/XSD/SOAP/WSDL/XSLT REST JSON YAML Containers (Docker Podman Kubernetes OpenShift).

Experience with Javascript frameworks: AngularJS Bootstrap JQuery.

Experience with Testing and Mocking frameworks: JUnit Jupiter Mockito Jasmine Karma Cucumber Unified Functional Tester (UFT) Selenium FITNesse.

Experience with build tools: Maven CMake RPM Jenkins Nexus.

Experience with high level requirements management including requirements decomposition secure systems engineering and development trade-off analysis interface control and testing and continuous integration.

Experience in software development on Agile teams using Agile Developer practices such as Pair Programming Test Driven Development (TDD) Refactoring and Acceptance Test Driven Development (ATDD).

Experience with Behavior Driven Development (BDD).

Secure Software development (i.e. Layer 7 Policy).

Experience with the Scrum Scaled Agile Framework (SAFe) methodology SAFe Agilest Certification or experience as a member of an Agile team.

If youre looking for comfort keep scrolling. At Leidos we outthink outbuild and outpace the status quo because the mission demands it. Were not hiring followers. Were recruiting the ones who disrupt provoke and refuse to fail. Step 10 is ancient history. Were already at step 30 and moving faster than anyone else dares.

Original Posting:

April 27 2026

For U.S. Positions: While subject to change based on business needs Leidos reasonably anticipates that this job requisition will remain open for at least 3 days with an anticipated close date of no earlier than 3 days after the original posting date as listed above.

Pay Range:

Pay Range $131300.00 - $237350.00

The Leidos pay range for this job level is a general guideline onlyand not a guarantee of compensation or salary. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job education experience knowledge skills and abilities as well as internal equity alignment with market data applicable bargaining agreement (if any) or other law.


Required Experience:

Senior IC

Job DescriptionLeidos has an exciting opportunity for a Sr. Software Engineer! *Must have an active TS/SCI Polygraph up front. No exceptions.*You will perform software development lifecycle (SDLC) activities as both an individual and a member of our top-notch agile development team building a large ...
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About Company

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Leidos is an innovation company rapidly addressing the world's most vexing challenges in national security and health. Our 47,000 employees collaborate to create smarter technology solutions for customers in these critical markets.

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