Six live on the App Store, three on Google Play

Engineering Apps, Built and Shipped

Simulation and visualization tools for engineers, priced for students and independent professionals. Built on the same physics I spent thirteen years doing at Johns Hopkins APL.

ARMOR: AR Mobile Robotics

A URDF viewer, editor, and MuJoCo physics simulator for iPhone, iPad, and Mac. Visualize and test robots at 1:1 scale in augmented reality.

Mobile Multibody Dynamics

The first multibody dynamics app for iOS and Android. A Python equation generation and solving engine behind native Swift and Kotlin interfaces.

YouKon

Unit conversion and an engineering property database, built in Kotlin Multiplatform with one codebase across iOS and Android.

Aerospace dynamics, shipped as mobile and AR software

Physics and Software, One Practice

DC Engineer bridges traditional aerospace and mechanical engineering with the frontier of spatial computing. The practice is led by an engineer with 15+ years of experience, 13 of them at the Johns Hopkins Applied Physics Laboratory, including seven years supervising a section of engineers with advanced degrees.

An engineering organization has physics it understands and software it cannot build. A software team has an app it can ship and physics it cannot get right. Both produce the same failure: a tool that is either rigorous and unusable, or polished and quietly wrong. Closing that gap normally takes four people, a dynamicist, a 3D artist, a mobile developer, and a technical lead to keep them aligned.

DC Engineer covers that vertical as one practice. The portfolio runs from open source engineering libraries to robotics simulation in augmented reality, whether that means porting high-performance physics to mobile with SwiftUI and Kotlin Multiplatform, or building MuJoCo-integrated simulation that runs in your hand.

What DC Engineer Does

Engineering Software Services

Custom software for engineering problems that need the physics to be right. Engagements typically run 4 to 12 weeks, from research algorithm to shipped application.

Dynamics & Simulation Consulting
DC Dynamics & Control header image

Dynamics & Simulation Consulting

Structural dynamics, aeroelasticity, modal analysis, system identification, and multibody simulation. MATLAB with Simulink and Simscape, Abaqus, and Python, backed by thirteen years at Johns Hopkins APL.

Mobile, AR & 3D Software Development

Mobile, AR & 3D Software Development

Native iOS, macOS, and Android applications with augmented reality and real-time 3D. Swift and SwiftUI, Kotlin Multiplatform, RealityKit, Blender, and MuJoCo where the physics has to hold up.

Robot Simulation, in Your Hand

Available for consulting engagements

Get in touch

I take on projects at the intersection of native mobile architecture and complex physical systems. Real-time robotics interfaces, simulation engines, AR tools for hardware, and research code that needs to become a product.

My approach combines the performance of native Swift and Kotlin with the rigor of aerospace and mechanical engineering. Engagements typically run 4 to 12 weeks. Want to know more? Check out my resume.

Tell me what you are building, what platform it needs to run on, and roughly when you need it. A link to a repository, CAD model, or spec is welcome but not required.



Where I work

DCDC LLC is registered in Washington, DC. I currently work remotely from Bilbao, Spain, and return to the DC area in 2027.
eliott.radcliffe@dc-engineer.com