David Hilemon
El Cajon
Summary
Solution architect with extensive experience in system design and software deployment. Proven ability to deliver innovative solutions that enhance operational efficiency. Strong technical skills complemented by a commitment to team collaboration and project success.
Overview
40
40
years of professional experience
Work History
Enterprise/Solution Architect
AFS/Health Portfolio
04.2025 - Current
- Developed As-Is architecture using DoDAF2 and VA-focused views for applications:
- Created To-Be modernization architecture sets for OIT-managed applications supporting cloud hosting.
- Transformed Visio architectures into Unicom Systems Architect tools models to enhance design clarity.
Enterprise/Solution Architect
Cognosante LLC.
04.2023 - 03.2025
- Created As-Is architecture sets for OIT-managed applications in VA Supply Chain activities.
- Developed future-state architecture sets incorporating SCM enhancements and cloud hosting.
- Maintained HELM Enterprise Architecture Style Guide to ensure architectural consistency.
Enterprise/Solution Architect
Deloitte LLC/GPS Group
07.2021 - 04.2023
- Developed As-Is architecture sets for OIT-managed supply chain modernization activities.
- Managed three architects to improve project outcomes and enhance efficiency.
- Created HELM view approaches using MS Visio and MS Excel to ensure clarity.
- Assessed project documentation for NAVAIR PMA-271, identifying discrepancies and recommending improvements.
- Evaluated Navy NMCI and OneNet capabilities, concentrating on cloud deployment strategies.
Principal Systems Engineer/ Architect
Science Applications International Corporation (SAIC)
06.2007 - 09.2018
- Delivered comprehensive Systems Engineering support for DoN NC3-N Naval Messaging Hybrid Solution.
- Developed architecture using MagicDraw (Cameo) and established requirements in DOORS.
- Provided architectural assessments and policy development for DON SPAWAR Code 52100.
- Supported Chief Engineer as USN Architecture Warrant Holder by refining processes.
Senior Systems Engineer
Odyssey Systems Consulting Group, Ltd.
06.2005 - 05.2006
- Multifunctional Information Distribution System (MIDS) Low Volume Terminal (MIDS-LVT) systems External (non-USA) Sales (Logistics) management.
Senior System Engineer/ Tester
Integrits Corporation
09.2001 - 06.2005
- Executed Combat System Integration Testing (CSIT) for FFG7, CVN69, and CVN76 combat systems at the Integrated Combat System Test Facility (ICSTF).
- Performed comprehensive CSIT validate functionality and performance.
- Collaborated with engineering teams to ensure adherence to testing standards and protocols and documented designs.
- Analyzed test data to identify discrepancies and recommend corrective actions (Trouble Reports and Engineering Change Proposals (ECPs)).
- Reported findings and assessments of Combat Systems tested.
Software Test Engineer/ Database Administrator
Science Applications International Corporation (SAIC)
06.1999 - 09.2001
- Developed applications for Comprehensive Nuclear Test Ban Treaty under Department of Defense.
- Executed testing procedures and maintained Oracle testing databases effectively.
Principal Engineer/ Analyst/ Manager
Northrop Grumman Corp. (COMPTEK Federal Systems)
05.1995 - 05.1999
- Managed 21 programmers to develop application, correct discrepancies, and implement enhancements.
- Conducted thorough testing of application to ensure functionality and reliability.
- Resolved application code discrepancies to enhance performance and stability.
- Provided comprehensive Systems Engineering support throughout project lifecycle.
Systems Engineer/ Tester
DRS Technologies (Pacific Technologies Inc. (PTI))
02.1986 - 05.1995
- Executed LHD-1 Combat System Integration Testing (CSIT) to ensure system reliability.
- Developed and documented comprehensive Test Plans and Procedures, including Test Bed Validation (TBV) Plans.
- Created detailed Testing Reports to summarize findings and recommendations.
Test Engineer
Computer Science Corporation Inc.
11.1985 - 02.1986
- Employing Static Environment Test Tool (SETT) application alongside breakpoint testing methodologies to assess LHD-1 Combat System software performance compliance with design requirements
Education
MS - Systems Engineering
George Washington University
05-2013
BS - Computer Science
National University
11-1985
AS - Marine Occupations
San Diego Evening College
05-1980
Skills
- Systems engineering and architecture
- Model-based systems engineering (MBSE)
- Independent verification and validation (IV&V)
- Department of Defense Architecture Framework (DoDAF) 202
- DoD systems development processes
- Cloud deployment and integration
- Requirements analysis and gathering
- Project management and delivery
- Enterprise architecture design
- Technical documentation and reporting
- Data modeling and analysis
- Stakeholder engagement and communication
- Team leadership and building
- Process improvement and optimization
- Risk assessment and management
- Effective communication skills
- Problem solving and critical thinking
- Policy development and implementation
Experience Years
39
Skills Certifications
- Systems Engineering
- Model-Based Systems Engineering (MBSE)
- Systems Architecture Development
- Independent Verification & Validation (IV&V)
- Department of Defense Architecture Framework (DoDAF) 2.02
- DoD Systems Development Processes
Timeline
Enterprise/Solution Architect
AFS/Health Portfolio
04.2025 - Current
Enterprise/Solution Architect
Cognosante LLC.
04.2023 - 03.2025
Enterprise/Solution Architect
Deloitte LLC/GPS Group
07.2021 - 04.2023
Principal Systems Engineer/ Architect
Science Applications International Corporation (SAIC)
06.2007 - 09.2018
Senior Systems Engineer
Odyssey Systems Consulting Group, Ltd.
06.2005 - 05.2006
Senior System Engineer/ Tester
Integrits Corporation
09.2001 - 06.2005
Software Test Engineer/ Database Administrator
Science Applications International Corporation (SAIC)
06.1999 - 09.2001
Principal Engineer/ Analyst/ Manager
Northrop Grumman Corp. (COMPTEK Federal Systems)
05.1995 - 05.1999
Systems Engineer/ Tester
DRS Technologies (Pacific Technologies Inc. (PTI))
02.1986 - 05.1995
Test Engineer
Computer Science Corporation Inc.
11.1985 - 02.1986
MS - Systems Engineering
George Washington University
BS - Computer Science
National University
AS - Marine Occupations
San Diego Evening College
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