Digital and Software Engineering

Transforming complex software challenges into secure and scalable solutions.

Software Engineering is one of Castellum’s core capabilities and one of the most powerful ways we help defense and mission organizations modernize, adapt, and stay ahead. From cloud‑native platforms to intelligent automation, we design and deliver technology that grows with you. Our software engineering delivers the robust, scalable, and mission‑ready solutions organizations need to operate with confidence in a rapidly evolving digital landscape. Whether you are modernizing legacy systems or building something entirely new, our engineering teams bring the rigor, creativity, and expertise needed to accelerate your business and unlock what’s next.  We have extensive current and past performance on many Navy and Army programs. This experience covers all aspects of the software engineering lifecycle, including project planning and management, requirements engineering, design and development, digital modernization, configuration management and process quality assurance, test planning, test automation, test execution, and transition support/implementation and sustainment. 

This experience is reflected across a broad portfolio of Navy and Army programs where our teams have supported software development, modernization, integration, testing, deployment, and sustainment activities, including:

  • Aviation Data Management and Control System (ADMACS)

  • Next Generation Visual Landing Aids – Aviation Lighting System Control Panel Set (NGVLA ALSCPS)

  • Landing Signal Officers Display System (LSODS)

  • Advanced Arresting Gear (AAG)

  • EAF Design and Analysis Tool (EDAT)

  • Consolidated Automated Support Systems (CASS)

  • Improved Fresnel Lens Optical Landing System (IFLOLS)

  • Next Generation Visual Landing Aids – Multifunction Display (NGVLA MFD)

  • Electromagnetic Aircraft Launch Systems (EMALS)

  • Moriah Wind System (MWS)

  • Integrated Support Environment (ISE)

  • Army Unmanned Aircraft System (UAS)

Program Support

Ensuring your most critical initiatives stay on track and deliver measurable results when execution matters most.

From strategic planning and portfolio oversight to risk management and performance reporting, we bring disciplined structure and hands‑on expertise that keeps programs aligned, efficient, and driving forward.  We provide comprehensive project and program management solutions across a spectrum of technical, sensitive, mission‐critical functional domains. We support planning, programming, budgeting, and execution (PPBE) and strategic planning from early planning up through program objective memorandum (POM) approval and execution. Our corporate history is replete with examples of rapid, cost‐effective development and introduction of innovative systems/subsystems into our customers’ portfolios. We’ve played integral roles in the start‐up of several high visibility programs supporting DOW customers including development of acquisition strategies, integrated master program schedule, budget baseline, and milestone documentation. Our program support experts have developed and maintained milestone documentation for programs in all phases of the acquisition lifecycle. Castellum creates “one stop” data repositories for management reports, guidelines, and tracking of program execution documentation and requirements. We match our knowledge and experience with critical problem and environment analysis, compliance knowledge and forward thinking to help leaders address the most complex problems. Castellum is currently providing program support to:

  • OUSW A&S 

  • OSW R&E

  • DOW Chief Information Office

  • HQDA DCS G-3/5/7 

  • C5ISR Center, Engineering &Systems Integration Directorate, (AI&E Division)

  • Army Program Executive Office, Command, Control, Communications, Tactical (PEO C-3T)

  • NAWCAD Mission Operations & Infrastructure

Model Based Systems Engineering (MBSE)

Transforming complexity into clarity, enabling teams to visualize, analyze, and optimize systems before they’re built. 

Our MBSE capability enables organizations to manage complexity with unmatched clarity and control. We combine proven engineering rigor with advanced digital modeling to create an integrated, end‑to‑end view of system behavior, requirements, architecture, and performance. We provide subject matter expertise with industry-leading MBSE environments used to design, trace, and manage complex systems. By replacing static documents with living, data‑driven system models, we help teams collaborate more effectively, identify risks earlier, and make faster, more informed decisions throughout the lifecycle. Our experts leverage industry‑leading tools and methods to accelerate design, enhance traceability, streamline verification and validation, and ensure every component works seamlessly within the broader mission. Whether modernizing legacy systems or developing next‑generation solutions, our MBSE approach delivers the precision, flexibility, and insight needed to bring complex systems to life with confidence. We currently support the following platforms with MBSE:

  • MQ-9 Reaper

  • MQ-4C Triton

Electronic Warfare (EW)/ Electromagnetic Spectrum Operations (EMSO)

Empowering organizations to sense, secure, and dominate in contested, multi‑domain environments.

We integrate advanced signal intelligence, spectrum awareness, cyber‑resilient architectures, and agile decision‑support tools to help teams understand the electromagnetic battlespace and act with precision. Our experts design and support systems that detect, analyze, and counter emerging threats while enabling resilient communications and operational freedom. Through a blend of cutting‑edge technology, data‑driven insight, and mission‑focused engineering, we help customers maintain information advantage, reduce vulnerability, and ensure readiness across the full spectrum of modern operations. From concept development to system integration and test, we deliver EW/IO solutions that meet today’s demands and anticipate tomorrow’s challenges. Castellum is currently entrusted with supporting key DOD stakeholders in EW and EMS policy development, implementation, and oversight.  At the Army Service level, we contribute to policy formulation at HQDA and capability development at the CCOE.  For the Navy, we play a pivotal role in EW instruction, tactics development/implementation and the advancement of surface- and air-based EW capabilities.  Our enduring partnerships and deep involvement in these initiatives ensure that we remain at the forefront of technological and strategic developments.

C5ISR

Delivering the connected awareness and decisive advantage required for modern operations.

Castellum integrates command and control, communications, computers, cyber, intelligence, surveillance, and reconnaissance into a unified, data‑driven ecosystem that empowers users to act with speed and certainty. By combining advanced sensing, secure networks, real‑time analytics, and intuitive mission applications, we help organizations gain a complete operational picture across all domains. Our experts design, engineer, and sustain systems that improve interoperability, enhance situational understanding, and ensure resilient mission execution even in highly contested environments. From enterprise architectures to edge solutions, we enable customers to collect, process, and share information faster, turning insight into action and action into advantage.  Castellum also brings extensive experience supporting the policy and force-structure development required to field interoperable capabilities across the force. This work strengthens situational awareness, improves information sharing, and enables decision advantage for commanders and senior decision makers. 

Data Analytics

Empowering organizations to transform raw information into actionable insight at every level of decision making. 

Castellum has hands-on experience using data analytics to provide insights based on empirical evidence, enabling more informed and objective decision-making. We combine advanced analytics, AI‑driven techniques, and intuitive visualizations to help teams uncover patterns, predict outcomes, and optimize performance across complex missions and operations. From data engineering and quality assurance to real‑time interactive dashboards and predictive modeling, our experts build solutions that make information accessible, trustworthy, and operationally relevant. We help customers break down silos, integrate diverse data sources, and turn their data ecosystem into a strategic asset; enabling faster decisions, greater efficiency, and a measurable competitive advantage. We can analyze large datasets to identify trends and patterns that might not be immediately apparent, helping our customers anticipate changes and user behavior. We know how to identify inefficiencies and areas for improvement within an organization, leading to cost savings and more streamlined operations. Data analytics helps track and measure performance across various metrics, providing a clear picture of what’s working and what’s not. We use historical data to make predictions about future events, allowing customers to be proactive rather than reactive. We have created solutions using:

  • Advanced Analytics - Anaconda, Pandas, Google Analytics, SAS

  • Data Visualization and Interactive Dashboards  - Tableau, D3, and PowerBI, and QlikView

  • Natural Language Processing  - Python NLTK

  • Link Analysis - Neo4j, i2, Oracle knowledge graphs 

  • Geolocation and Routing Services - ESRI ArcGIS

  • Technology Assisted Review - Relativity, Python

  • Data Science Models - R, Python, Time-series forecasting, Erlang ‘A’

  • Extract Transform Load (ETL) - Talend, SSIS

Cyber Security 

Providing the disciplined processes and expert guidance organizations need to achieve and sustain compliance in today’s complex cyber landscape.

With deep experience in the Risk Management Framework, cyber engineering, incident response, vulnerability management, DevSecOps, penetration testing, and Cyber Supply Chain Risk Management, we help our customers identify risk earlier, harden systems more effectively, and sustain secure operations in increasingly contested environments. Our approach aligns cybersecurity activities to mission assurance outcomes, not just documentation requirements, so systems remain secure, resilient, supportable, and ready for operational use.

We also understand the mission assurance requirements that underpin RMF, ensuring cybersecurity activities are aligned not only to compliance outcomes, but also to the protection, resilience, and continuity of mission-essential functions. Our team builds secure architectures, identifies gaps, and streamlines documentation to ensure systems meet security requirements without slowing mission execution. By integrating compliance into the engineering lifecycle and leveraging automation where possible, we reduce risk, accelerate authorization timelines, and strengthen overall cyber resilience. The result is a secure, compliant, and operationally ready environment that withstands evolving threats and meets the highest standards of assurance. The Castellum cyber team brings a robust set of qualifications and experiences to the table, particularly in the areas of the implementation of the RMF Cyber Incident Response planning, and Cyber-Supply Chain Risk Management (C-SCRM).  Castellum engineers deliver world class cyber support to all IT (from infrastructure to mission systems) and continually monitor threat intelligence from around the world to ensure the systems and enclaves we support stay ahead of the threats rather than simply reacting to them.  

By combining RMF discipline, secure engineering, DevSecOps automation, vulnerability management, incident response, penetration testing, and supply chain risk reduction, Castellum helps customers move from a compliance posture to a cyber-resilient operating model. The result is a secure, compliant, and operationally ready environment designed to withstand evolving threats and sustain mission-essential functions.

Engineering / Logistics

Ensuring that complex systems are designed, delivered, and sustained with precision and reliability.

Castellum’s engineering and logistics team combines deep technical expertise with end‑to‑end lifecycle support to help organizations streamline operations, reduce risk, and maintain mission readiness. Our engineers develop robust, scalable solutions while our logistics specialists optimize supply chains, maintenance strategies, and sustainment planning to keep critical assets performing at their best. From system design and integration to provisioning, configuration management, and long‑term supportability, we provide the structure and insight needed to enhance efficiency, improve availability, and enable smooth, uninterrupted operations across any mission environment. Our team is comprised of seasoned RF, electrical, mechanical, system engineers, and technicians, and we are committed to developing innovative solutions across a wide spectrum of client requirements. Our logistics team has provided inventory and material management support to many customers since 2004. Our services and support ensure that material is available when and where it is needed and that customer’s maintenance infrastructure meets all mission objectives. Our central distribution warehouse facilities are temperature controlled with a state-of-the-art asset management system. The following is a list of programs we have supported:

  • NAVSEA NSWC, H Department

  • P-8 Aircraft

  • Navy Special Mission Aircraft

  • Trident UAV

  • Integrated Test Facility (ITF)

  • Multi-Intelligence Sensors Development (MISD)