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# Sr. Software Developer

- **Company:** Leidos, Inc.
- **Location:** Gaithersburg, MD, United States
- **Experience:** Expert
- **Salary:** $107,900.0 - $195,050.0
- **Contract:** Permanent contract
- **Skills:** Java (Programming Language), Application Programming Interfaces (APIs), Amazon Web Services, Application Performance Management, Microsoft Azure, C Sharp (Programming Language), C++ (Programming Language), Databases, Software Debugging, DevOps, Python (Programming Language), Object-Oriented Software Development, Scrum Methodology, RabbitMQ, Redis, Ansible, Software Engineering, Web Applications, Enterprise Software Applications, ReactJS, Vue.js, Containerization, AngularJS, Gitlab-ci, Information Technology, Front End Software Development, Restful APIs, Docker, Jenkins, Microservices
- **Published:** October 23, 2026
- **Apply:** https://www.techcareers.com/job.asp?id=3466566581&tx=JP1711FFK&pt=1&aff=0B19D771-A501-4A5E-8338-2A822B784D54&utm_source=Job%20Feed&utm_medium=textkernel&utm_campaign=DE&utm_term=0B19D771-A501-4A5E-8338-2A822B784D54

## About the Role

Active Top Secret/SCI with the ability to successfully pass a Polygraph examination., * US citizenship is required per contract.

 * Bachelor's degree in Computer Science, Software Engineering, or related field and 8-12 years of prior relevant experience or Master's with 6-10 years of prior relevant experience.
 * 8+ yearsof professional softwaredevelopment experience.
 * Strong proficiency in one or more object-oriented programming languages such as:
 * Java
 + C#
 * Python
 * C++ Experience developing web-based applications andenterprise softwaresolutions.
 * Experience designing andconsuming REST APIs.
 * Experience working withrelational and/orNoSQL databases.
 * Strong understanding ofobject-oriented designprinciples and softwaredesignpatterns.
 * Experience using Gitor other distributedversion control systems.
 * Experience working withinAgileScrum or SAFedevelopment environments.
 * Excellent analytical, debugging, andproblem-solvingskills.
 * Strong written andverbal communication skills.

PreferredQualifications:

 * Experience developingcloud-native applicationsin AWS, Azure, or other cloudplatforms.
 * Experience with containerization technologies suchas Docker andKubernetes.
 * Experience building microservicesarchitectures.
 * Familiarity with DevSecOpspractices and CI/CDtools including Jenkins, GitLab CI, orAzure DevOps.
 * Experience with Infrastructureas Codetools such asTerraform or Ansible.
 * Knowledge of messagebrokers such asKafka or RabbitMQ.
 * Experience with front-end frameworks suchas React, Angular, or Vue.js.
 * Familiarity withElasticsearch, Redis, orother enterprise technologies.
 * Experience with securesoftware development lifecycle(SSDLC)practices.
 * Security+ certificationor other DoD8570/8140 compliantcertification.

## Description

* Design, develop, test, deploy, and maintainenterprise software applicationsusing modern developmentpractices.
 * Collaborate with ProductOwners, Scrum Masters, architects, and fellowdevelopers to deliverhigh-quality softwareinAgile sprints.
 * Participate in sprintplanning, backlog refinement, daily stand-ups, sprint reviews, andretrospectives.
 * Develop clean, maintainable, and well-documentedcode following securecoding standards andbest practices.
 * Design and implementRESTful APIs, microservices, and distributed applicationarchitectures.
 * Performcode reviews andmentor junior developersto promote engineeringexcellence and knowledgesharing.
 * Troubleshoot complex applicationissues and performroot cause analysisto improve systemreliability and performance.
 * Develop automated unit, integration, andend-to-endtests to ensuresoftware quality.
 * Collaborate with DevSecOpsteams to implementCI/CD pipelinesand automated deploymentprocesses.
 * Optimize application performance, scalability, and securityacrossenterprise environments.
 * Participate in architecturediscussions and contributeto technical roadmapsandmodernization initiatives.
 * Support production deploymentsand resolve issuesinmission-criticalenvironments