Senior .NET/Application Developer (On-Site)

Oxley Enterprises • Silver Spring, MD

2d • Onsite

About The Position

Join us as a Senior .NET/Application Developer supporting mission-critical systems at the Joint Pathology Center. In this high-impact role, you'll develop and modernize enterprise applications, integrate AI-enabled capabilities, and help ensure secure, reliable healthcare technology solutions. The Senior .NET/ Application Developer provides enterprise-level software engineering, application support, and Operations and Maintenance (O&M) services for Joint Pathology Center (JPC) software systems.

Requirements

• 5 years of application development experience
• Bachelors Degree in information technology, computer science, cybersecurity, engineering, or related field
• Active certification meeting Cyber IT/Cybersecurity Workforce (CSWF)/Information Assurance Technician (IAT) Level II requirements (e.g., Security+ CE, CySA +, CND, GSEC, GICSP, SSCP) or a certification for DCWF 621 - Software Developer (e.g., CSSLP, CISSP, CISSP-ISSAP, CISSP-ISSEP, SecurityX /CASP+, SSCP)
• Excellent experience providing support for web-based and Windows-based applications developed using the Microsoft .NET stack (e.g., ASP.NET, C#, MVC, IIS , etc.)
• Excellent experience supporting a Laboratory Information System (LIS) and other Commercial-Off-The-Shelf (COTS) and Government-Off-The-Shelf (GOTS) software products
• Excellent experience supporting development, sustainment, integration, modernization, and troubleshooting of applications
• Above average experience supporting Graphical User Interface (GUI) development using various technologies (e.g., Visual Studio, .NET MVC framework, Kendo UI, JavaScript, HTML, AJAX, ASP, CMS platforms, SQL Server, MySQL )
• Experience coordinating closely with system administrators, database administrators, cybersecurity personnel, application teams, vendors, and mission stakeholders
• Experience designing, developing, and maintaining Artificial Intelligence (AI)-enabled application features
• Experience designing, implementing, and maintaining integrations between multiple software systems using web services, APIs, and HL7 interfaces
• Experience with version control repositories
• Experience developing and maintaining comprehensive technical documentation (e.g., system designs, configuration baselines, interface documentation, Standard Operating Procedures (SOPs))
• Experience supporting a federal agency
• Active DoD Secret Clearance
• Ability to obtain DoD Top Secret Clearance as needed
• U.S. Citizenship

Responsibilities

• Provide software engineering and technical support to ensure full operational capability of JPC application systems
• Maintain and support LIS software and other mission-critical applications across all environments (e.g., development, testing, staging, and production)
• Monitor application health, logs, and performance metrics to identify errors, performance degradation, and anomalous or suspicious activity
• Implement corrective actions, patches, and defect resolutions to maintain system stability and performance
• Design, develop, enhance, and sustain applications using industry best practices and approved development frameworks
• Implement future system enhancements based on evolving mission requirements and stakeholder input
• Provide objective evidence that software design outputs meet specified requirements at each phase of the Software Development Life Cycle (SDLC)
• Integrate machine learning models, analytics engines, or AI services into existing applications in accordance with Government-approved architectures
• Ensure AI components are transparent, auditable, and compliant with DoD cybersecurity, data governance, and ethical use guidelines
• Support AI model lifecycle activities, including training data integration, testing, validation, deployment, and performance monitoring
• Collaborate with stakeholders to identify appropriate use cases for AI within LIS and other JPC systems
• Monitor and maintain system interfaces to ensure reliable data exchange and interoperability
• Support database interactions and coordinate with database administrators to ensure data integrity and performance
• Track, manage, and document all software Change Requests (CRs) using robust configuration management practices
• Plan, coordinate, and execute software releases, patches, and updates across environments
• Support release validation and rollback procedures
• Embed security controls within software applications to meet DoD cybersecurity requirements
• Conduct application security testing using approved tools and methodologies (e.g., OWASP, Fortify, static and dynamic code analysis)
• Perform and support verification and validation activities, including unit testing, functional testing, code inspections, walkthroughs, and static/dynamic analysis
• Ensure software meets functional, security, and performance requirements prior to deployment
• Document test plans, results, and remediation actions
• Generate reports and status updates to communicate system changes, configuration updates, risks, and operational status to JPC stakeholders

Benefits

• Medical, dental, vision and prescription drug coverage for you and your family.
• Life Insurance, short-term disability and long-term disability paid for by the Company.
• Supplemental coverages including Accident, Critical Illness, and Hospital.
• Additional Life insurance coverage for you and your dependents.
• 401k plan with various options to select based on your retirement goals.

What This Job Offers

• Job Type: Full-time
• Career Level: Senior