ManTech Software Developer in Stafford, Virginia

ManTech International Corporation provides innovative engineering and systems integration services that help our customers solve their toughest, most intractable problems. National defense and homeland security clients depend on our rapid, cost-effective development of adaptable, interoperable, integrated solutions that provide high performance in quick-response scenarios.

We are looking for a Software Developer to play a central role in the design, development, and delivery of web and mobile web products. You will connect the dots between business needs, innovation, and good design.

This position requires an ACTIVE DoD Clearance

General Responsibilities:

  • Lead the creation of project deliverables such as user goals, scenarios, flows, technical specifications, conceptual designs, and prototypes

  • Build dynamic web applications using HTML5, CSS3, JavaScript, jQuery, and AJAX and/or other similar technologies including Angular, Node.js, Ruby on Rails, and PHP

  • Learn new technologies as the need arises, recommending innovative new solutions, and serving as a subject-matter expert

  • Collaborate with other team members – developers, designers, and project managers – to deliver high quality creative products

  • Prioritize workload to accommodate and deliver on multiple projects on time & on budget

Mandatory Skills Requirements:

  • Bachelor s degree in Computer Science or related technical discipline (+7 years experience)

  • 5-7 years experience in the development of web, mobile and/or software applications

  • 1-3 years experience SOLR, Elastic Search, RabbitMQ and/or Stream Text Oriented Protocol (STOMP), Advanced Message Queuing Protocol (AMPQ) or other messaging technologies

  • 1-3 years experience with NoSQL platforms such as Hadoop or Cassandra

  • 1-3 years of presentation-layer web development experience, including HTML5, CSS3, Javascript, jQuery, RESTful webservices, and AJAX

  • 1-3 years experience with virtual technologies such as ESXi, vCenter, Hyper-V, OpenStack etc.

  • Excellent communication skills and interpersonal skills

  • Ability to work well independently and in a collaborative team environment

  • At least two (2) years experience with at least three (3) of the following:

  • Requirements definition

  • Modular testing

  • Formulating design methodology

  • Documentation origination

  • Systems integration and testing to verify required performance

  • Assessment of change proposals for technical merit

  • Database design and development

  • Experience with fast development (rapid prototyping, fast turnover, Agile)

  • Experience with cold/new start development (not just maintenance of existing applications)

  • Web and mobile-first design experience (Java frameworks such as Spring/Springboot, HTML5, D3, React, Node.js, Docker, Python, Ruby, Angular, NPM, Yarn, Bower, Gulp, Grunt, BrowserSync)Other Skills:

  • Familiarity with microservices

  • Experience with NoSQL databases such as Mongo or Dynamo

  • Continuous deployment/continuous development experience (CI/CD, DevOps)


Requires Bachelor s degree (in Computer Science or related field) or equivalent, and seven to nine years of related experience.


Equivalent Experience/Education, Bachelor's Degree

Years of Experience

13-15 years w/High School Diploma, 07-09 years w/Bachelors Degree, 04-06 years w/Masters Degree

Position Type





ManTech International Corporation is comprised of approximately 7,300 talented employees who use advanced technology to help government and industry meet some of their greatest challenges around the world. We adhere to the simple, no-nonsense values on which ManTech was founded more than four decades ago, aligning squarely with the mission objectives of our customers. As our customer base continues to expand and diversify, we continue to diversify our workforce and solutions. Nearly half our employees have a military background, and approximately 70 percent hold a government security clearance. As a leading provider of innovative technology services and solutions for the nation's defense, security, health, space, and intelligence communities; we hold nearly 1,100 active contracts with more than 50 different government agencies.

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 Waretime 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 (703) 218-6000. 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.

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