> Markdown version of [/jobs/ext/1990912-cryptography-firmware-engineer](https://www.wearedevelopers.com/jobs/ext/1990912-cryptography-firmware-engineer). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Cryptography Firmware Engineer - **Company:** LMI - **Location:** United States - **Experience:** Experienced - **Salary:** $90,000.0 - $130,000.0 - **Contract:** Permanent contract - **Skills:** Adobe InDesign, Systems Engineering, User Authentication, C++ (Programming Language), Cyber Security, Computer Engineering, Software Debugging, Programming Tools, Embedded Software, Federal Information Processing Standards (FIPS), Firmware, Hardware Design, Key Management, Universal Asynchronous Receiver/Transmitter, SSL Certificate Management, Serial Peripheral Interface, PIC Microcontroller, SC Clearance, Information Technology, U-Boot - **Published:** August 8, 2026 - **Apply:** https://www.clearancejobs.com/jobs/9083141/cryptography-firmware-engineer ## About the Role The ideal candidate has experience with embedded firmware development and an interest in applied cryptography. You will help integrate the Nordic nRF54L Series AES-256 hardware accelerator, develop secure firmware features, and build a repeatable test environment to validate cryptographic functionality and fleet-wide key management processes. U.S. citizenship is required. Candidates must be eligible to obtain a Secret security clearance. An active Secret clearance is preferred., * Bachelor's degree in Electrical Engineering, Computer Engineering, Computer Science, Cybersecurity, or a related STEM field. * 3-6 years of embedded firmware development experience using C/C++. * Experience developing firmware for embedded microcontrollers. * Basic understanding of applied cryptography, including AES encryption, secure key storage, and authentication. * Familiarity with embedded hardware peripherals and communication interfaces such as SPI, UART, I2C, and GPIO. * Experience debugging embedded systems using standard development tools. * Strong analytical and troubleshooting skills. * Ability to work effectively within a multidisciplinary engineering team. * U.S. citizenship and the ability to obtain a Secret security clearance. Preferred Qualifications * Experience with Nordic Semiconductor nRF54 Series microcontrollers. * Experience implementing hardware cryptographic accelerators or secure elements. * Familiarity with secure boot, secure firmware updates, and device provisioning. * Experience developing key management or certificate management solutions. * Familiarity with FIPS 140-3 or other embedded security standards. * Experience supporting DoD or government technology programs. * Active Secret security clearance. Travel * Approximately 10-20% travel for customer support, engineering collaboration, hardware integration, manufacturing coordination, and field testing as required., Applicants must meet eligibility requirements for a U.S. Government security clearance. Only US Citizens are eligible for a security clearance. For this position, LMI will only consider applicants with security clearances or applicants who are eligible for security clearances, due to the nature of the work. ## Description * Develop and maintain embedded firmware supporting secure communications and cryptographic functionality. * Integrate and optimize use of the nRF54L Series AES-256 hardware accelerator within embedded firmware. * Design, implement, and validate secure key management capabilities for embedded devices. * Develop and maintain a cryptographic test laboratory to support verification of encryption, authentication, and key management processes. * Create repeatable test procedures for device provisioning, key rotation, and fleet-wide cryptographic key updates. * Collaborate with hardware, firmware, cybersecurity, and systems engineering teams to implement secure embedded architectures. * Support hardware integration, firmware validation, and production readiness activities. * Participate in design reviews and contribute to security architecture discussions. * Document firmware designs, cryptographic workflows, and validation procedures. * Support customer demonstrations, lab testing, and occasional field integration activities. ## Related Videos - [Playing Pong on a shoulder press machine](https://www.wearedevelopers.com/videos/100140-playing-pong-on-a-shoulder-press-machine) - [Cyber Security: Small, and Large!](https://www.wearedevelopers.com/videos/259-cyber-security-small-and-large) - [Agent Smith Gets Hardware: Autonomous IoT Hacking From Debug Port to Cloud API](https://www.wearedevelopers.com/videos/100258-agent-smith-gets-hardware-autonomous-iot-hacking-from-debug-port-to-cloud-api) - [Security Pitfalls for Software Engineers](https://www.wearedevelopers.com/videos/726-security-pitfalls-for-software-engineers) - [Cybersecurity for Software Defined Vehicles](https://www.wearedevelopers.com/videos/725-cybersecurity-for-software-defined-vehicles) - [When Agents Meet Legacy: Never Change a Running System](https://www.wearedevelopers.com/videos/100320-when-agents-meet-legacy-never-change-a-running-system) ## Related Articles - [Dev Digest 134 - Where pixels sing?](https://www.wearedevelopers.com/magazine/477-dev-digest-134-where-pixels-sing) - [Dev Digest 188: CfP time, the risks of NPM and IKEA algorithms](https://www.wearedevelopers.com/magazine/635-dev-digest-188-cfp-time-the-risks-of-npm-and-ikea-algorithms) - [9 Ways to Make Money Hacking](https://www.wearedevelopers.com/magazine/333-9-ways-to-make-money-hacking) - [Dev Digest 191: Malware interviews, EU ❤️ Open Source and Skilled Agents](https://www.wearedevelopers.com/magazine/645-dev-digest-191-malware-interviews-eu-open-source-and-skilled-agents) - [Events like RSAC Get You CISOs. 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