Application Engineer Jobs in Virginia

Job Title: Full-Stack Application Modernization Engineer

Work Location: Hybrid; Vienna, VA

Clearance Required: US Citizen; Public Trust

Alpha Omega is looking for a Full Stack Application Modernization Engineer to join our team to support one of our government customers.

Key Responsibilities:

• The primary responsibilities for the position are to provide program level support towards modernization of multiple mission critical and mission essential applications.

• The nature of the work requires that the candidate demonstrates initiative, organization, responsibility, customer service skills, and the ability to be flexible and adaptive to a fast-paced, fluid business environment.

• The candidate must be able to communicate effectively and decisively with all levels of the organization, collaborate within and across teams, and be able to solve practical problems as well as exercise sound judgement with regards to sensitive and confidential information.

Required Qualifications:

• 8+ years of enterprise application development and integration experience, including full-stack application modernization.

• Strong hands-on experience with Java, Spring Boot, Spring MVC, C#, ASP.NET, and .NET Framework / modern .NET.

• Experience developing and modifying frontend applications using JavaScript, TypeScript, Angular, AngularJS, React.js, HTML5, CSS3, and jQuery.

• Strong understanding of SAML 2.0, OAuth 2.0, OpenID Connect, SSO, federated authentication, and identity-provider integration.

• Experience integrating enterprise applications with identity management solutions through authentication middleware, APIs, adapters, or identity-provider wrappers.

• Experience with IIS, Oracle WebLogic, Apache TomEE, and Azure App Service.

• Ability to modify authentication-related application components, including login/logout workflows, redirects, authentication callbacks, session management, token handling, and user-facing error messages.

• Experience troubleshooting authentication flows across frontend, backend, middleware, and identity-provider components.

• Familiarity with legacy enterprise applications, including .NET desktop technologies such as WPF/WCF.

• Experience with secure software development, CI/CD pipelines, automated integration testing, and vulnerability remediation.

• Ability to work independently with multiple application development teams to assess existing integrations, design changes, implement solutions, and support testing and deployment.

Preferred Qualifications

• Experience with, Microsoft Entra ID, Login.gov, ID.me or similar enterprise identity solutions.

• Experience migrating applications from proprietary authentication solutions to standards-based federated identity platforms.

• Experience supporting authentication modernization across Java, .NET, and platform-based applications.

Salary and Benefit Information:

The likely salary range for this position is $115,000 - $130,000. This is not, however, a guarantee of compensation or salary. There are multiple factors that are considered in determining final pay for a position, including, but not limited to, relevant work experience, skills, certifications and competencies that align to the specified role, education and certifications as well as contract provisions regarding labor categories that are specific to the position and could fall outside of this range.

Application Deadline: December 31, 2026

Joining the Alpha Omega team entitles you to participate in all retirement benefits, plans of deferred compensation, health and insurance benefits, and other such benefits as set forth in the company’s policy and benefits manuals. See below, to name a few:

• 15 days PTO including paid parental, military, and bereavement leave
• Eleven (11) paid Federal holidays, five of which are floating holidays (as designated by the company’s holiday schedule each year)
• Health and Dental Insurance (including 100% employer paid premiums for employee coverage under the HDHP health plan)
• Life Insurance, STD/LTD term disability coverage, with employer paid premiums
• 401 (k) plan with a match that is 100% vested after you complete two years of service
• FSA/DFSA/HSA flexible benefit plans
• Annual Tuition & Professional Development Reimbursement benefit

We regularly review our Total Rewards package to ensure our offerings are competitive and reflect what our employees have told us they value most.

Our Company:

Alpha Omega is an award-winning solutions provider dedicated to delivering mission-enabling technology and strategic solutions for our customers. Since our founding in 2016, we have grown to over 700 employees nationwide consisting of former operators, technologists, and strategists who bring decades of government and industry experience. They are united by one purpose: ensuring our nation’s continued global leadership.

We have a unified operating model providing technical capabilities and solutions for customers across two main business units:

• National Security – supporting agencies such as the Department of Homeland Security (DHS), Navy, Air Force, Army, and the Department of State (DOS).
• National Resilience – supporting agencies such as Federal Deposit Insurance Corporation (FDIC), Treasury, Health & Human Services (HHS), National Institutes of Health (NIH), National Oceanic and Atmospheric Administration (NOAA) and the United States Department of Agriculture (USDA)

Through strategic partnerships, intellectual property, and relentless drive for innovation, Alpha Omega is shaping the future of government technology. We are proud to be a Virginia Best Places to Work 8 times, an Inc. 5000 honoree 7 times, and a Washington Post Top Workplaces 4 times. Join us in driving transformation that secures the nation's future.

Culture and Values:

Guided by our core values—Harmony, Engagement, Accountability, Resourcefulness, and Tenacity (HEART)— we foster a culture of innovation, collaboration, and continuous learning and are committed to delivering high-impact solutions. We recognize and reward hard work.

Alpha Omega's culture is driven by our values and mission. We invest in top talent through mentorship, growth, and meaningful work. We value individuality, reward integrity, and foster a diverse, high-performing team united by purpose-at work, in service, and in the community.

Alpha Omega Integration, LLC (Alpha Omega) is an Equal Opportunity Employer. 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, or any other protected class.

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