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# Senior Embedded Software Engineer

- **Company:** Castelion Corporation
- **Location:** United States
- **Experience:** Expert
- **Contract:** Permanent contract
- **Skills:** Microsoft Azure, Booting (BIOS), Compilers, Nvidia CUDA, Continuous Integration, Software Debugging, Device Drivers, Embedded Software, Firmware, FreeRTOS, Joint Test Action (IEEE Standards), Key Management, Linux Kernel, Cloud Services, Software Engineering, System Testing, Systems Integration, Graphics Processing Unit (GPU), Grafana, Build Tools, Hardware Debugging
- **Published:** November 13, 2026
- **Apply:** https://www.careerbuilder.com/job-details/senior-embedded-software-engineer-tx--f7ed9895-1ca9-4f31-bb8d-84e22d423209

## About the Role

Embedded Software, Software Engineering, Embedded Software, Software Engineering, Electricity, CUDA (Compute Unified Device Architecture), Acceptance Testing, Cryptography, Field Trials, System Test, * Strong proficiency in C and production Rust (unsafe code discipline, ownership semantics).

 * Hands-on CUDA development on embedded or edge-class GPUs (Jetson, similar).
 * Experience with ARM-based SoCs, memory-mapped I/O, DMA, interrupts, IPC.
 * Proven work on secure boot, cryptography libraries, key management, or similar security-critical code.
 * Comfortable with Linux internals, cross-compilers, build systems, and hardware debugging tools.
 * Solid Git/GitHub workflows and familiarity with modern CI/CD.

Preferred Skills and Experience

 * Experience with Zephyr, FreeRTOS, or seL4;
 * Knowledge of DSP, real-time networking, or RF signal chains.
 * Azure or other cloud services for telemetry ingestion.

## Description

Castelion is seeking a Senior Embedded Software Engineer to architect, implement, and harden software running on resource constrained, mission critical systems. You'll write low-level C and Rust, accelerate workloads with CUDA, and own secure processing paths (crypto, secure boot, key management) from concept through field test. You'll collaborate closely with electrical, systems, and test teams to bring new hardware online fast and keep it reliable.

Responsibilities

Embedded & Firmware Development

 * Design and implement embedded applications, device drivers, and board support packages in C and Rust.

 * Optimize and parallelize compute-intensive algorithms using CUDA on embedded GPUs.

 * Bring up new boards: bootloaders, secure boot chains, peripheral initialization, and diagnostics.

 * Implement and validate cryptographic protection using TPMs

Systems Integration & Testing

 * Integrate sensors, comms links, and high-rate data paths, profile and tune for latency and throughput.

 * Develop automated HW-in-the-loop tests; script board flashing, provisioning, and regression suites.

 * Use JTAG, logic analyzers, oscilloscopes, and trace tools to debug hard problems.

Monitoring & Telemetry

 * Instrument systems for performance and reliability; feed data to Grafana/Foxglove for analysis.

Collaboration & Troubleshooting

 * Partner with cross functional teams to isolate issues quickly in lab and field environments.
 * Document designs, decisions, and interfaces clearly for internal and external stakeholders.