Software Engineer III

Leidos; Reston (VA); On-site; USD 87,000 - 157,000; Full time

Job summary

Leidos is seeking a Software Engineer III to support the DOJ, Office of Justice Programs, OCIO, in advancing secure, reliable, accessible, and user-centered digital products and services. The Software Engineer III will contribute to design, development, testing, deployment, and sustainment of applications, APIs, automation, and DevSecOps capabilities supporting OJP product teams.

The successful candidate will revise existing software to improve function, address defects and technical debt,

Qualifications

• Bachelor's degree or equivalent experience in a technical discipline.
• Minimum four years of software engineering or application development experience.
• Experience with enterprise/web applications across multiple layers.
• Experience with Git-based workflows, code reviews, and automated testing.
• Experience in Agile development environments and iterative planning.
• Knowledge of REST APIs, JSON, authentication/authorization, and integration patterns.
• Knowledge of CI/CD, cloud platforms, containers, automation, or Infrastructure as Code.
• Strong analytical and communication skills; team collaboration.
• Must meet citizenship, residency, background check, and Public Trust requirements.

Responsibilities

• Develop, modify, test, debug, and maintain software components supporting OJP digital products and APIs.
• Revise existing software to improve functionality, usability, performance, and security while reducing defects.
• Translate user stories and technical requirements into working software using Agile practices.
• Create and maintain automated unit, integration, regression, API, and data tests.
• Support CI/CD pipelines, source repositories, build automation, security scanning, and repeatable deployments.
• Develop, publish, consume, and maintain APIs using REST and standards like WSO2 API Manager.
• Support API integrations with DIAMD including Okta and SailPoint; SCIM, OAuth 2.0, SAML.
• Collaborate with stakeholders to deliver secure, accessible, and maintainable capabilities.

Skills

Git-based workflows

Agile

REST APIs

JSON

CI/CD

Automated testing

Education

Bachelor's degree in Computer Science or related field

Tools

WSO2 API Manager

Azure DevOps

Jenkins

Ansible

Docker

AWS GovCloud

GitHub

Linux

Job description

Description

Leidos is seeking a Software Engineer III to support the U.S. Department of Justice (DOJ), Office of Justice Programs (OJP), Office of the Chief Information Officer (OCIO) in advancing secure, reliable, accessible, and user-centered digital products and services.

The Software Engineer III will contribute to the design, development, enhancement, integration, testing, deployment, and sustainment of applications, application programming interfaces (APIs), automation, and Development, Security, and Operations (DevSecOps) capabilities supporting OJP product teams. The successful candidate will revise existing software to improve function, address defects and technical debt, strengthen automated testing, and support implementation of solutions within OJP's current and future enterprise architecture using modern Agile and DevSecOps practices.

Primary Responsibilities

• Develop, modify, test, debug, and maintain software components that support OJP digital products, integrations, APIs, automation, and internal platforms.
• Revise existing software to improve functionality, maintainability, usability, performance, accessibility, security, and reliability while reducing defects and technical debt.
• Translate user stories, acceptance criteria, customer needs, and technical requirements into working software using Agile product-team practices.
• Create and maintain automated unit, integration, regression, API, and data tests to improve release quality and reduce technical debt.
• Support continuous integration and continuous delivery (CI/CD) pipelines, source-code repositories, build automation, security scanning, artifact or container workflows, and repeatable deployment processes using OJP-approved tools.
• Develop, publish, consume, and maintain APIs and web services through OJP's data-integration environment, including WSO2 API Manager, using applicable standards and protocols such as REST, JSON, XML, SOAP, and related technologies.
• Support API integrations with OJP's Identity and Access Management System (DIAMD), including integrations involving Okta and SailPoint and protocols such as SCIM, OAuth 2.0, and SAML, in coordination with the DIAMD team.
• Support cloud-hosted and containerized application environments and coordinate deployment, security, patching, and troubleshooting activities with OJP networking and security teams.
• Investigate and resolve assigned help desk tickets, defects, and technical issues involving Data Integration and DevSecOps products.
• Participate in code reviews, defect triage, root-cause analysis, production support, and corrective-action activities.
• Create and maintain technical documentation, configuration information, user stories, standard operating procedures, and implementation notes.
• Collaborate with software engineers, architects, DevOps engineers, business analysts, product managers, and Government stakeholders to deliver secure, compliant, accessible, and maintainable capabilities.

Basic Qualifications

• Bachelor’s degree in Computer Science, Software Engineering, Information Systems, Engineering, or a related technical discipline, or equivalent relevant experience, consistent with applicable labor-category requirements.
• Minimum four (4) years of progressively responsible software engineering or application development experience.
• Experience developing, enhancing, debugging, and maintaining enterprise or web-based applications across one or more application layers.
• Experience with modern source control and software development practices, including Git-based workflows, code reviews, and automated testing.
• Experience working in Agile development environments and participating in iterative planning, backlog refinement, sprint execution, or Kanban delivery.
• Working knowledge of REST APIs, JavaScript Object Notation (JSON), authentication and authorization concepts, and common integration patterns.
• Working knowledge of continuous integration and continuous delivery (CI/CD), cloud platforms, containers, automation, or Infrastructure as Code.
• Strong analytical, troubleshooting, written communication, and team collaboration skills.
• Must satisfy the citizenship, residency, background-investigation, and Public Trust requirements applicable to the task order.

Preferred Qualifications

• Experience supporting DOJ, OJP, or another Federal digital-service environment.
• Experience with one or more relevant tools or platforms such as Azure DevOps, Jenkins, Ansible, Docker, AWS GovCloud, WSO2 API Manager, Git-based repositories, or Linux.
• Familiarity with API management and identity-integration technologies, including SCIM, OAuth 2.0, SAML, Okta, SailPoint, or comparable technologies.
• Familiarity with security scanning, application monitoring, logging, observability, and coordinated vulnerability-remediation workflows.
• Familiarity with Section 508 accessibility, secure software development, Infrastructure as Code, and automated testing practices.
• Relevant training or certifications in API management, Azure DevOps, GitHub, cloud, DevOps, software engineering, or related technologies.

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:

September 30, 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 $87,100.00 - $157,450.00

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.

About Leidos

Leidos is an industry and technology leader serving government and commercial customers with smarter, more efficient digital and mission innovations. Headquartered in Reston, Virginia, with 47,000 global employees, Leidos reported annual revenues of approximately $16.7 billion for the fiscal year ended January 3, 2025. For more information, visit www.Leidos.com .

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 at www.leidos.com/careers/pay-benefits .

Commitment to Non-Discrimination

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.

REQNUMBER: R-00193431

All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability or veteran status. Leidos will consider qualified applicants with criminal histories for employment in accordance with relevant Laws. Leidos is an equal opportunity employer/disability/vet.