cryptography jobs in San Diego

Design and implement security and privacy controls for on-device AI features on Snap OS, including model integrity, secure data handling, inference-time privacy protections, and sensor access controls. Research and develop security features across firmware, applications, system services, and cloud-connected device surfaces.…See more Improve fuzzing infrastructure, automated security testing, and continuous validation pipelines for OS components, IPC mechanisms, parsers, drivers, firmware, and AI data flows. Requires 5+ years developing production software in C, C++, or Rust and 3+ years building security or platform protection features for Linux-based, embedded, mobile, or wearable systems.

This Staff Engineer role owns and executes BD's product security lifecycle for FDA-regulated medical device dispensing systems and their cloud platforms. Key responsibilities include defining end-to-end security architecture, conducting threat modeling and risk assessments, implementing secure SDLC practices aligned to NIST/OWASP/BSIMM, managing SBOMs and vulnerability remediation, and ensuring regulatory compliance (IEC 62304, ISO 14971, FDA cybersecurity guidance).…See more The role requires 5+ years of cybersecurity experience with FDA Class I/II devices, hands-on expertise in embedded/cloud/application security, and the ability to balance security controls with usability while supporting FDA submissions.

Lead a large technical team supporting Navy-Marine Corps Intranet (NMCI) operations under the SMIT contract, managing network infrastructure, incident response, change management, and O&M initiatives. Perform hands-on network engineering including troubleshooting, installation, configuration, cabling, and COMSEC support across BAN/LAN/WAN environments.…See more Analyze network architectures, diagnose faults, manage customer relationships, and execute projects in a fast-paced DOD enterprise network environment. Requires extensive operations/engineering leadership experience with network/transport technical background and DOD enterprise network knowledge.

Design and implement ultra-high-performance packet processing software for AWS EC2's Nitro System, handling encryption, firewalls, routing, and billing across millions of hosts worldwide. Optimize data structures and low-level hardware tuning to achieve millions of packets per second on single CPU cores using C/C++.…See more Own end-to-end feature design, implementation, integration testing, and production deployment across the global EC2 fleet. Mentor junior engineers and collaborate with cross-functional teams on system architecture, CI/CD validation platforms, and monitoring/diagnostics services.

Lead senior systems engineer on the EC2 NX Platforms team, owning the packet processing pipeline that runs beneath every EC2 instance across 9M+ hosts globally. Design and implement ultra-high-performance networking software handling encryption, firewalls, routing, billing, and monitoring — targeting millions of packets per second on a single CPU core through highly optimized C/C++ code and low-level hardware tuning.…See more Mentor junior engineers, lead architecture decisions, conduct design and code reviews, and communicate technical designs with users and senior management. Ship production code with immediate, measurable impact across the entire EC2 fleet powering AWS Lambda and all external workloads.

The Embedded Software Engineer III designs and implements embedded software for satellite avionics and payload data processing systems, including real-time monitoring, power management, and Linux board support packages for flight applications. The role requires proficiency in C/C++ on embedded Linux and RTOS platforms, experience with ARM Cortex and RISC-V architectures, bootloader/kernel customization, and networking/security protocols (IP, TLS, IPsec).…See more Responsibilities include interfacing with FPGA systems (Xilinx, Microsemi, Microchip, Vorago), cryptographic implementations, and close collaboration with hardware teams to deliver low-SWaP aerospace solutions. Candidates must have 5+ years of embedded software development and the ability to obtain a U.S. Security Clearance.

Join Humanoid's Platform Infrastructure team as a Software Engineer focused on device security and identity. You'll design and implement the cryptographic chain of trust, secure boot pipelines, key management infrastructure, and certificate lifecycle management that ensures only trusted software runs on trusted hardware across their fleet of humanoid robots.…See more Working alongside senior engineers, you'll write production-quality backend and automation code spanning factory provisioning to cloud infrastructure, collaborating across firmware, applications, cloud, and operations teams. This role requires 5+ years of professional experience, strong CS fundamentals, proficiency in Python, C/C++, TypeScript, or Rust, comfort with Linux, and the ability to work on-site in San Diego.

A Junior Operating Systems Engineer will build and maintain custom Linux images using Yocto Project (recipes, layers, BitBake, kernel configuration), supporting immutable A/B-updatable OS architectures with secure boot and update tooling. The role involves packaging, integrating, and troubleshooting system services, drivers, and third-party software on embedded x86 hardware, as well as contributing to OS hardening (FIPS mode, secure boot, compliance configuration).…See more Daily use of generative AI tools will accelerate development tasks including recipe writing, test scaffolding, and debugging. The engineer will debug boot, kernel, driver, and userspace issues on real appliance hardware and document build processes, image releases, and provisioning workflows.

Senior embedded software engineer role developing mission-critical firmware for Amazon's Leo satellite constellation. Responsibilities include architecting ASIC firmware, RF communication subsystems, secure boot operations, real-time embedded software, and hardware interfaces using protocols like I2C, SPI, UART, and Ethernet.…See more The role requires security-by-design principles, threat modeling, secure coding practices, and collaboration with hardware architects and systems engineers to bring custom silicon from concept through secure bring-up and production integration.

The Senior Systems Engineer will design, develop, and support communications and encryption devices, providing technical expertise in cryptographic technologies and deployment strategies. Responsibilities include advising on cryptographic equipment deployment, analyzing emerging threats, conducting technical analysis of cryptographic products for acquisition decisions, liaising with vendors on device lifecycle, and supporting leadership with briefings and fielding decisions.…See more The role requires 5–15 years of cybersecurity, systems engineering, or network security experience, along with strong analytical, problem-solving, and written communication skills. A bachelor's degree in Systems Engineering, Computer Science, or related field is required.

Field/Base Network Engineer managing large technical teams and Navy-Marine Corps Intranet (NMCI) operations under the SMIT contract. Responsibilities include BAN/LAN/WAN network operations, troubleshooting, repair, installation, cabling, configuration, and COMSEC support; managing incident response, change management, and problem management initiatives.…See more Requires extensive operations/engineering leadership experience, working knowledge of large DoD enterprise network environments, and hands-on technical background in network architectures, fault diagnosis, and ITSM/DevSecOps. Physical role involving equipment installation, rack mounting, confined-space work, and site-based troubleshooting across multiple locations.

Design and own network security across Saronic's enterprise, on-premises, cloud, and maritime vessel communications infrastructure. Responsibilities include managing firewalls, segmentation, VPN/ZTNA, and wireless systems (Palo Alto, Cisco, Aruba); securing AWS VPC architecture in commercial and GovCloud; architecting secure vessel communications over cellular, RF, SATCOM, and mesh links with cryptographic key management; and building network observability and automation at scale.…See more Requires 5+ years of hands-on enterprise network security experience, production firewall and VPN operations, L3-L7 networking fundamentals, and the ability to obtain a U.S. security clearance.

Senior Software Engineer supporting next-generation tools and systems development at a defense/intelligence contractor. Responsibilities include designing and implementing AI-assisted web-based applications that integrate with custom embedded systems, writing requirements and test documentation, executing tests, and interfacing with customers on requirements and design reviews.…See more Requires 6+ years of software engineering experience, proficiency in Python, C# or Rust, JavaScript/TypeScript, HTML/CSS, Linux systems expertise, web-based UI development skills, and network software engineering knowledge (TLS/HTTPS). Must hold or be able to obtain a DoD SECRET clearance.

Lead the architectural design of server-side, backend, and cloud platform capabilities supporting Dexcom's continuous glucose monitoring products. Collaborate across product, cybersecurity, firmware, data, and mobile teams to translate business and regulatory requirements into secure, scalable, and maintainable platform solutions.…See more Establish architectural direction for distributed services, APIs, data pipelines, event-driven systems, and shared platform capabilities. Guide technology exploration, system integration, performance testing, and serve as an authority for platform architecture principles and modern backend development practices across the organization.

Lead senior systems engineer on the EC2 NX Platforms team to design and optimize the packet processing pipeline powering EC2 instances across AWS's global fleet. Drive ultra-high-performance networking software handling millions of packets per second through expert C/C++ development, low-level hardware tuning, and data structure optimization.…See more Own architecture decisions, mentor junior engineers, and ship production code across EC2 and Lambda with full ownership from design through operation. Collaborate with cross-functional teams to implement Software Defined Networking (SDN) capabilities that enhance security, availability, and reliability.

Design and implement ultra-high-performance packet processing software for AWS EC2's virtualized networking stack, handling encryption, firewalls, routing, and monitoring across 9M+ hosts. Own end-to-end development of features running on the EC2 Nitro System, from design through production deployment, optimizing for millions of packets per second on single CPU cores.…See more Build secure, scalable monitoring and diagnostics services, and design hardware/software validation platforms enabling efficient CI/CD. Mentor junior engineers on systems architecture and maintainable code while collaborating cross-functionally to define requirements and improve development processes.