Principal Software Engineer with Security Clearance

Currently, ManTech is seeking a motivated, career and customer-oriented Principal Software Engineer to join our team in the Reston or Chantilly, VA location. This is an onsite position. The successful candidate will be dedicated full-time to development and enhancement support for existing software and systems solutions and the development of new solutions as required. Responsibilities include but are not limited to: * Designing, developing, programming, and modifying software, systems, applications, and tools, both existing and new in the future
* Analyzing software and integration requirements and working with team members to determine development and implementation plans
* Correcting errors by making the appropriate changes and then re-checking the program to ensure the desired result was produced
* Developing solutions and maintaining support for external data sources and users
* Building web services, APIs, and other solutions to interface with third-party systems to synchronize data
* Conducting testing of software to be sure it will produce the desired results and that instructions are correct
* Organizing and maintaining documentation of developed software and subsequent revisions, so others are able to understand the program
* Collaborating with teammates, third-parties, vendors, and users to develop new requirements and solutions Minimum Qualifications: * 15+ years of relevant software engineering experience
* Bachelor’s degree in a relevant area or five (5) additional years of relevant project management experience in lieu of a degree
* Strong programming/development skills and hands-on engineering experience (Java & JDK 17+ and/or Javascript/Typescript)
* Strong experience with REST APIs and standard software engineering tools such as Jira, Git, Gradle/Maven and experience developing software in Linux environments
* Strong experience with the full data lifecycle, from ingest through display
* Strong experience using SonarQube for code quality testing Preferred Qualifications: * Experience with one or more of the following development technologies: Vue.js, Vite, microservices, Bash, wireframes, UX patterns, Websockets, Groovy/Grails
* Experience with one or more of the following test technologies: Junit5, AssertJ, Mockito, Postman, Vitest, Eslint
* Experience with one or more of the following infrastructure/database technologies: MongoDB, Elasticsearch, PostgreSQL, RabbitMQ, Consul, Vault, Nomad, RHEL9
* Experience with Cloud technologies and developing in Cloud environments
* Ability and willingness to travel overseas if required Clearance Requirements: * Must possess an active Secret Physical Requirements: * Must be able to be in a stationary position more than 50% of the time
* Must be able to communicate, converse, and exchange information with peers and senior personnel
* Constantly operates a computer and other office productivity machinery, such as a computer
* The person in this position frequently communicates with co-workers, management, and customers, which may involve delivering presentations. Must be able to exchange accurate information in these situations
* The person in this position needs to occasionally move about inside the office to access file cabinets, office machinery, etc.