Senior Software Engineer

Leidos; Englewood (CO); On-site; USD 140,000 - 165,000; Full time

Job summary

Leidos is seeking a Senior Software Engineer to join the Chinook Program supporting an IC customer with direct national security impact.

The role emphasizes hands-on development, technical leadership, and mentoring engineers while shaping software architecture and directing critical application capabilities. Locations include Englewood, CO among others.

Qualifications

• Lead design, development, integration, testing, deployment, and sustainment of a software application.
• Translate mission, systems, and technical requirements into scalable software solutions.
• Provide technical direction and mentorship to other engineers while remaining hands-on.

Responsibilities

• Lead the design, development, integration, testing, deployment, and sustainment of a software application that supports GEOINT mission.
• Translate mission, systems, and technical requirements into scalable software solutions.
• Lead technical design for application components, services, APIs, and integrations.

Skills

Hands-on software development

Technical leadership

Mentoring engineers

Architecture design

Job description

Description

Lead Technology Behind a Mission That Matters

Great software engineering is about more than writing code, it is about solving difficult problems, making smart technical decisions, and building capabilities people can depend on. Leidos is seeking an accomplished Senior Software Engineer to join the Chinook Program supporting an Intelligence Community (IC) customer and an application with direct national security impact.

As a Senior Software Engineer, you will be a key technical leader, shaping software architecture, solving complex engineering challenges, and helping drive the evolution of critical application capabilities. You will remain hands‑on while influencing technical direction, mentoring engineers, and collaborating with architects, systems engineers, DevSecOps, test professionals, and mission stakeholders.

The Senior Engineer is responsible for complex software development, technical design, integration, troubleshooting, and engineering leadership. You will take ownership of significant technical areas and provide technical direction to other engineers while remaining hands‑on with development.

Position may be performed in the following locations below.

• Tucson, AZ
• Gaithersburg, MD
• Alexandria, VA
• Chantilly, VA
• Englewood, CO
• St. Louis, MO

Clearance Level Required:

Active Top Secret/SCI with the ability to successfully pass a Polygraph examination.

Primary Responsibilities:

• Lead the design, development, integration, testing, deployment, and sustainment of a software application that supports our customer’s GEOINT mission.
• Translate mission, systems, and technical requirements into scalable software solutions.
• Lead technical design for application components, services, APIs, and integrations.