Senior .NET/Application Developer (On-Site)

The following states/districts are excluded from this job ad: AK, CA, CO, CT, DC, HI, LA, MA, MN, MO, NE, NV, NH, NJ, NM, NY, ND, OR, PR, RI, VT, WA, WY

Future Need - Actively Interviewing

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.

Location: Joint Pathology Center, 606 Stephen Sitter Ave, Silver Spring, MD 20910

Position Description: 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.

Minimum/General Experience: 5 years of application development experience

Minimum Education: 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)

Essential Skills/Qualifications:

• 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 

General Physical Requirements needed to perform the essential functions of this job may vary based on the location of the assignment. 

• Assignment Location - Joint Pathology Center, 606 Stephen Sitter Ave, Silver Spring, MD 20910  
• Sedentary Work - Exerting up to 10 pounds of force occasionally and/or a negligible amount of force frequently or constantly to lift, carry, push, pull or otherwise move objects. 
• Typing, communicating, repetitive motions. 
• Close visual acuity to prepare and analyze data, view computer monitors and read. May need to view presentation screens and other visual aids in a virtual setting. 
• Inside environmental conditions with protection from outside elements. 

Security: Active DoD Secret Clearance; Ability to obtain DoD Top Secret Clearance as needed

• U.S. Citizenship

DoD Clearance Consists of a review of up to but not limited to:

• Covers 10 year period and in some instances lifetime events
• OPM Security Investigations Index (SII)
• DOD Defense Central Investigations Index (DCII)
• National Agency Check (NAC) records
• FBI name check
• FBI fingerprint check
• Credit report check
• A check of local law enforcement agencies with jurisdiction over the areas where the applicant has lived, worked, or attended school
• Education check- Attendance and Degrees
• Employment verification -may include interviews of supervisors and/or co-workers
• Corroboration of unemployment
• May include reference interviews
• May include interviews of the individual, former spouse (s)
• Confirmation of all residences
• Verification of public record information

Acceptable Credentials

Tasks/activities include, but are not limited to:

• Provides software engineering and technical support to ensure full operational capability of JPC application systems
• Maintains and supports LIS software and other mission-critical applications across all environments (e.g., development, testing, staging, and production)
• Monitors application health, logs, and performance metrics to identify errors, performance degradation, and anomalous or suspicious activity
• Implements corrective actions, patches, and defect resolutions to maintain system stability and performance
• Designs, develops, enhances, and sustains applications using industry best practices and approved development frameworks
• Implements future system enhancements based on evolving mission requirements and stakeholder input
• Provides objective evidence that software design outputs meet specified requirements at each phase of the Software Development Life Cycle (SDLC)
• Integrates machine learning models, analytics engines, or AI services into existing applications in accordance with Government-approved architectures
• Ensures AI components are transparent, auditable, and compliant with DoD cybersecurity, data governance, and ethical use guidelines
• Supports AI model lifecycle activities, including training data integration, testing, validation, deployment, and performance monitoring
• Collaborates with stakeholders to identify appropriate use cases for AI within LIS and other JPC systems
• Monitors and maintains system interfaces to ensure reliable data exchange and interoperability
• Supports database interactions and coordinates with database administrators to ensure data integrity and performance
• Tracks, manages, and documents all software Change Requests (CRs) using robust configuration management practices
• Plans, coordinates, and executes software releases, patches, and updates across environments
• Supports release validation and rollback procedures as required
• Embeds security controls within software applications to meet DoD cybersecurity requirements
• Conducts application security testing using approved tools and methodologies (e.g., OWASP, Fortify, static and dynamic code analysis
• Performs and supports verification and validation activities, including unit testing, functional testing, code inspections, walkthroughs, and static/dynamic analysis
• Ensures software meets functional, security, and performance requirements prior to deployment
• Documents test plans, results, and remediation actions
• Generates reports and status updates to communicate system changes, configuration updates, risks, and operational status to JPC stakeholders

Compensation & Benefits: The annual projected pay range for this position is $116,405 - $130,190 with consideration being given to various factors including but not limited to qualifications, experience, job responsibilities, and geographic location.

Oxley Enterprises, Inc. offers a full array of benefits including:

• 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.

Oxley Enterprises®, Inc. is a certified service-disabled veteran-owned (SDVOSB), veteran-owned (VOSB), and woman-owned small business (WOSB) that has 26 years of experience building and delivering quality IT systems and programs. Oxley is ranked in the INC 5000 7 times (2016, 2017, 2018, 2021, 2023, 2024, 2025). Oxley is a 2019 - 2025 Department of Labor HIRE Vets Medallion Award Winner. Oxley is Virginia Values Veterans certified.

All qualified applicants will receive consideration for employment without regard to any status protected by applicable federal, state, or local law.

If you require a reasonable accommodation to apply for a position at Oxley Enterprises, Inc., please send an email to our Human Resources Department at: careers@oxleyenterprises.com with the following information:

Subject Line: Accommodation Request

Provide a description of your accommodation request

Include your contact information: Full name, Email address, Best number to reach you (optional)

We participate in the E-Verify program. http://www.dhs.gov/E-Verify

Salary : $116,405 - $130,190