IoT / Edge Software Engineer (Bethesda, MD, US)

Req ID: 376143 Ironwood Digital strives to hire exceptional, innovative and passionate individuals who want to grow with us. If you want to be part of an inclusive, adaptable, and forward-thinking organization, apply now. We are currently seeking a IoT / Edge Software Engineer to join our team in Bethesda (REMOTE), Maryland (US-MD), United States (US). Job Summary: The IoT Edge Software Engineer is responsible for the design, development, deployment, and maintenance of edge software components that enable secure, reliable, and scalable integration between field-deployed dosimeter devices, gateways, and cloud environment. This role is central to the modernization of client's radiation exposure management, focusing on the implementation and optimization of AWS Greengrass-based IoT gateway solutions, Bluetooth Low Energy (BLE) device communication, and secure data transmission protocols. The engineer works closely with system architects, backend/API engineers, and operational stakeholders to ensure that edge software components support real-time dosimeter data ingestion, device management, firmware updates, and operational status monitoring in compliance with cybersecurity and privacy requirements. The IoT Edge Software Engineer is responsible for developing and maintaining software modules that run on Linux-based gateway hardware, supporting features such as device authentication, data encryption, remote updates, and automated diagnostics. The position requires hands-on experience with embedded Linux, MQTT messaging, and integration with AWS IoT Core, as well as the ability to troubleshoot and optimize edge-to-cloud workflows for performance, reliability, and security. The engineer ensures that all edge software is auditable, maintainable, and aligned with the mission-critical needs of operational communities, supporting both connected and disconnected operational scenarios. This role is essential for delivering a robust, secure, and resilient edge computing infrastructure that enables client to provide accurate, timely, and actionable radiation exposure data across enterprise. Job Duties: Design, develop, and maintain edge software modules for IoT gateways, supporting BLE dosimeter communication, device management, and secure data transmission Implement and optimize AWS Greengrass components for deployment on Linux-based gateway hardware Develop and maintain secure device authentication, data encryption, and remote firmware update capabilities Integrate edge software with AWS IoT Core, MQTT messaging, and cloud services Support real-time and batch data ingestion workflows, including handling of disconnected operations and automated re-synchronization Collaborate with backend, security, and DevSecOps teams to ensure compliance with DoD IL4, FedRAMP, and RMF requirements Troubleshoot, optimize, and enhance edge software performance, reliability, and security Maintain comprehensive technical documentation for edge software components, deployment procedures, and operational workflows Participate in code reviews, security assessments, and compliance audits as required by contract and SOW Provide technical support for field deployment, user acceptance testing, and ongoing operations of edge solutions Basic Qualifications: Bachelor’s degree in a quantitative field such as engineering or mathematics (e.g., Electrical Engineering, Computer Engineering, Computer Science, Information Technology, or Information Systems) Minimum 3 years of experience with software engineering Minimum 1 year of experience with applying modern software development methodologies (e.g., agile, DEVOPS/DEVSECOPS) in a professional or academic setting Ability to obtain a Secret Clearance Preferred Qualifications: Experience with applying programming concepts in a professional or academic setting Experience developing backend services and APIs for cloud-based, IoT-enabled, or regulated federal systems Proficiency in Python, Java, or similar languages used for backend and API development Familiarity with AWS GovCloud, Greengrass, and secure data integration in DoD environments Experience implementing RBAC, organizational hierarchy, and secure authentication/authorization mechanisms Knowledge of DoD cybersecurity, privacy, and RMF requirements for IL4/IL5 systems Experience with automated testing, CI/CD pipelines, and DevSecOps practices Strong documentation and communication skills, including the ability to produce technical specifications and API documentation Experience supporting data migration, legacy system integration, and operational troubleshooting in large-scale enterprise environments Ironwood Digital provides a reasonable range of compensation for specific roles. The starting pay range for this remote role is $68,076 - $141,826. This range reflects the minimum and maximum target compensation for the position across all US locations. Actual compensation will depend on a number of factors, including the candidate’s actual work location, relevant experie