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Senior CNO Developer

3 months ago

Herndon, Virginia, United States Mantech International Corporation Full time
Secure our Nation, Ignite your Future


Become an integral part of a diverse team while working at an Industry Leading Organization, where our employees come first.

At ManTech International Corporation, you'll help protect our national security while working on innovative projects that offer opportunities for advancement.


Currently, ManTech is seeking a motivated, career and customer oriented Senior CNO Developer to join our team in the Herndon, VA area.

The candidate shall support the Sponsor in a cross-domain data transfer and system integration solution.

Activities will be concentrated on all aspects of the product development life cycle that are consistent with creating, implementing, and supporting new features and product capabilities in platform as a Service (PaaS) applications and improving data processing methods that ensure highest levels of information system security.

The candidate will travel to customer sites within the continental US if required; and will work with people to provide exemplary customer service in high-pressure situations.


Responsibilities include, but are not limited to:

  • Develop and maintain a working knowledge of the customer's requirements for the team product and a working knowledge of how the product functions in the larger ecosystem
  • Develops and maintains a working knowledge of the required policies, procedures, and change management plan for the project.
  • Develop and maintain a working knowledge of the technologies in use by the team product while exploring alternative implementations and solutions
  • Create, implement, test, document, and support feature and product capabilities and data processing methods that ensure highest levels of information system security
  • Collaborate with PO/SM, team leads, and team members to ensure product capabilities that meet or exceed customer requirements
  • Perform maintenance on existing products.

Basic Qualifications:

  • Bachelors Degree and 4+ years of relevant experience
  • 2+ years of experience developing microservices using Java/Kotlin and/or Spring Boot
  • Demonstrated on-the-job experience documenting program development and subsequent revisions, inserting comments in the coded instruction so others can understand the program.
  • Demonstrated on-the-job experience with identifying complex problems and translating information to form solution options and implement strategies.
  • Demonstrated on-the-job experience developing customized applications to run on a Linux-based system.
  • Demonstrated on-the-job experience with virtualized computing, i.e. Virtual Machines, ESXi, Docker, etc.
  • Developing software applications using relational databases (SQL/Postgres) and database persistency using JPA.

Preferred Qualifications:

  • Experience containerizing and deploying applications using CI/CD tools such as (Git, Kubernetes etc.) and familiarity with service mesh technologies (i.e., Istio)
  • Working knowledge of Object-oriented design, usage of commonly used design patterns, message brokers (Kafka/RabbitMQ).
  • Hands on experience with Linux/Unix, shell scripting, Junit, and Maven a plus
  • Demonstrated on-the-job experience with computer networking
  • Demonstrated on-the-job experience with Agile project management principles and processes
  • Demonstrated on-the-job experience documenting program development and subsequent revisions, inserting comments in the coded instruction so others can understand the program

Security Clearance Requirement:

  • Top Secret with SCI eligibility.

Physical Requirements:

  • Remain in a stationary position 50%, capable of operating a computer and other office productivity machinery, and frequently communicate with co-workers, management, and customers
  • Working with Data


For all positions requiring access to technology/software source code that is subject to export control laws, employment with the company is contingent on either verifying U.S.-person status or obtaining any necessary license.

The applicant will be required to answer certain questions for export control purposes, and that information will be reviewed by compliance personnel to ensure compliance with federal law.

ManTech may choose not to apply for a license for such individuals whose access to export-controlled technology or software source code may require authorization and may decline to proceed with an applicant on that basis alone.

ManTech International Corporation, as well as its subsidiaries proactively fulfills its role as an equal opportunity employer.

We do not discriminate against any employee or applicant for employment because of race, color, sex, religion, age, sexual orientation, gender identity and expression, national origin, marital status, physical or mental disability, status as a Disabled Veteran, Recently Separated Veteran, Active Duty Wartime or Campaign Badge Veteran, Armed Forces Services Medal, or any other characteristic protected by law.


If you require a reasonable accommodation to apply for a position with ManTech through its online applicant system, please contact ManTech's Corporate EEO Department at ManTech is an affirmative action/equal opportunity employer - minorities, females, disabled and protected veterans are urged to apply.

ManTech's utilization of any external recruitment or job placement agency is predicated upon its full compliance with our equal opportunity/affirmative action policies.

ManTech does not accept resumes from unsolicited recruiting firms. We pay no fees for unsolicited services.


If you are a qualified individual with a disability or a disabled veteran, you have the right to request an accommodation if you are unable or limited in your ability to use or access as a result of your disability.

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