Software Engineer Expert

Location: Chantilly, VA

Time Type: Full time

Job Description

 Leidos is seeking a Software Developer for a 200+ FTE technical development program supporting the Sponsor’s Entitlement Programs as well as IdAM /ICAM, Authentication, Authorization, Attributes and Digital Policy Management. The Software Developer will work with a large team of developers, software engineers, and data engineers.

We are seeking a Full Stack Software Developer to support the development, modernization, and maintenance of enterprise web applications and RESTful APIs within the Identity, Credential, and Access Management (ICAM) domain.

The ideal candidate will have experience developing scalable, secure, and maintainable applications using modern web technologies, primarily Angular, NestJS, TypeScript, and MySQL.

This position involves supporting mission-critical enterprise systems, implementing new functionality, integrating with internal and external services, and collaborating with a team of developers and technical leads to deliver reliable software solutions.

Key Responsibilities

• Develop, enhance, and maintain enterprise web applications using Angular and TypeScript.
• Design, implement, and maintain enterprise RESTful APIs and backend services using NestJS and Node.js.
• Develop and optimize database queries, schemas, and integrations using MySQL.
• Support application functionality within the Identity, Credential, and Access Management (ICAM) domain.
• Develop integrations between enterprise applications, APIs, and supporting services.
• Troubleshoot and resolve application issues across frontend, backend, and database components.
• Collaborate with developers, architects, and stakeholders to translate business and technical requirements into software solutions.
• Participate in code reviews, testing, debugging, and technical design discussions.
• Apply secure coding practices and support application security, performance, and reliability.
• Contribute to the ongoing modernization and improvement of enterprise applications and services.

 

Required Qualifications

 

• Requires a bachelor’s degree and 12+_years of relevant experience. Additional experience in lieu of degree.
• Proficiency in TypeScript and JavaScript.
• Experience with Angular or comparable modern frontend frameworks.
• Experience developing backend services using Node.js, preferably NestJS.
• Experience designing, developing, and integrating RESTful APIs.
• Working knowledge of SQL and relational databases, preferably MySQL.
• Familiarity with Git and collaborative development workflows.
• Understanding of modern software development principles, application architecture, and secure coding practices.
• Strong troubleshooting, analytical, and problem-solving skills.
• Ability to work collaboratively within a technical team.

• Active TS/SCI with Polygraph

 

Preferred Qualifications

 

• Direct experience with Angular, NestJS, and MySQL.
• Experience supporting large-scale enterprise applications or API-based architectures.
• Familiarity with Identity, Credential, and Access Management (ICAM) concepts and technologies.
• Understanding of authentication and authorization standards, including OAuth 2.0, OpenID Connect (OIDC), and SAML.
• Experience developing or maintaining Java applications or services.
• Experience with Docker and containerized application development.
• Familiarity with Kubernetes and container orchestration.
• Experience with AWS or other cloud environments.
• Familiarity with CI/CD pipelines and automated deployment processes.
• Experience with automated testing and application monitoring.
• Experience working in Agile development environments.

 

 

 

 

 

 

 

 

#MSBA

FIP

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

Original Posting:

October 21, 2026

Pay Range:

Pay Range $131,300.00 - $237,350.00

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.