Sr. Software Engineer TS / SCI Polygraph

Overview

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 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.

Responsibilities

• 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.
• Use sound software engineering principles to ensure that developed code is modifiable, efficient, reliable, understandable, fault tolerant, and reusable.
• Provide software process management and control throughout the coding portion of the software development process and promote code reuse and cross-program collaboration while reducing maintenance costs by creating common functions and shared actions for developers and testers.
• Engineer, author, tune and document automation scripts in a development environment and deploy to the test / production bench.

Basic Qualifications

Preferred Qualifications

Notes

CSSKEY

CONMD

careers.leidos.com / CONMD

abundance

At Leidos, we don't want someone who "fits the mold"—we want someone who melts it down and builds something better. This is a role for the restless, the over-caffeinated, the ones who ask, "what's next?" before the dust settles on "what's now."

If you're already scheming step 20 while everyone else is still debating step 2… good. You'll fit right in.

Original Posting

September 8, 2025

Pay Range

Pay Range $126,100.00 - $227,950.00

The Leidos pay range for this job level is a general guideline only and 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.

J-18808-Ljbffr