We architect and deliver mission-critical hardware-software systems — from bare-metal firmware and FPGA design to cloud-native applications and AI-integrated pipelines. Built by engineers, for engineers.
End-to-end engineering across the full product stack — from transistor to UI, from schematic to serverless.
Bare-metal and RTOS-based firmware development for resource-constrained environments. We optimize at the register level to maximize throughput and minimize power draw.
Custom PCB design, schematic capture, and hardware bring-up from concept to production. Signal integrity, power integrity, and DFM are engineered in from day one.
Connected device ecosystems with secure communication protocols, edge ML inferencing, and OTA update pipelines. From sensor to dashboard in a single cohesive architecture.
Scalable, cloud-native backends that bridge your hardware to the modern data stack. REST/GraphQL APIs, real-time telemetry ingestion, and data pipeline architecture.
Full-stack application development with modern frameworks and DevOps-first practices. From desktop control interfaces to web dashboards and native mobile applications.
Applied machine learning from model selection to production deployment. We specialize in bringing AI inference to the edge — on your custom silicon, not just in the cloud.
We don't just write code. We architect complete systems with the discipline and rigor that hardware demands and software deserves.
Deterministic, low-latency architectures for safety-critical and high-reliability applications. MISRA-compliant where required.
Filter design, FFT pipelines, and sensor fusion algorithms implemented on microcontrollers, DSPs, and FPGAs.
Cryptographic boot chains, secure element integration, and zero-trust device identity for connected hardware products.
Custom and standards-based protocols: CAN, Modbus, I²C, SPI, UART, USB, Ethernet, and proprietary RF stacks.
Hardware-in-the-loop (HIL) test frameworks, automated regression suites, and production test fixture design.
A disciplined, iterative methodology — adapted from aerospace and industrial engineering — applied to every engagement.
Requirements analysis, system architecture definition, and technical feasibility assessment.
Block diagrams, interface specifications, and hardware/software partitioning decisions.
Rapid hardware bring-up, proof-of-concept firmware, and integration risk reduction.
Full-stack implementation with continuous integration, code review, and automated validation.
Production handoff, manufacturing support, OTA infrastructure, and post-launch telemetry.
Cartmill Technologies LLC is an independent engineering consultancy based in Missouri, specializing in the intersection of hardware and software. We're not a staffing agency or a body shop — we're engineers who own the outcome.
We thrive in the space where hardware constraints meet software complexity — building products that must work reliably in the real world, not just in simulation. From proof-of-concept to production-ready, we deliver complete, documented, and maintainable systems.
Whether you need a trusted engineering partner for a new product development program, a specialized technical resource for a specific deliverable, or an embedded team extension — we bring the depth and discipline the job demands.
Start a ConversationHave a project that needs serious engineering? A hard problem that needs a trusted technical partner? We want to hear about it. Tell us what you're building.