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Senior Embedded Systems Engineer - Hardware & Reliability Sequence Engineering LLC Marysville, Ohio Full-Time | Hybrid $110,000-$150,000 per year, depending on experience About the Role Sequence Engineering is looking for an experienced Senior Embedded Systems Engineer to help strengthen the hardware platform behind Argos, our industrial IoT monitoring system. Argos is a connected hardware and software platform used to remotely monitor critical equipment and infrastructure. As the platform moves into larger-scale deployments, hardware reliability, serviceability, connectivity, secure remote management, and long-term field performance are becoming increasingly important. We are looking for an engineer who can take an independent look at our current hardware architecture, identify weaknesses, challenge existing assumptions, and help develop Argos into a highly reliable and scalable commercial product. This is not an entry-level development position. We want someone who has built real embedded or IoT products, moved them from prototype into production, and then dealt with what happens when hundreds or thousands of devices are operating in the field. You will work alongside our existing engineering team while becoming a key technical resource for Argos hardware architecture, reliability, remote fleet management, and field recovery. What You'll Do Perform a comprehensive technical review of the existing Argos hardware architecture. Identify reliability risks, single points of failure, component lifecycle concerns, and opportunities for simplification. Review embedded computing, power supplies, communications, sensors, interfaces, connectors, enclosures, and supporting electronics. Help define the next generation of Argos hardware. Improve system reliability, serviceability, manufacturability, and field replacement strategy. Develop hardware validation, qualification, burn-in, and accelerated-life testing procedures. Investigate field failures and perform structured root-cause analysis. Develop failure tracking and reliability metrics across the installed Argos fleet. Review component selection for expected product life, environmental conditions, availability, and obsolescence risk. Evaluate power quality, thermal performance, EMI/EMC, grounding, surge protection, and environmental protection. Support industrial communications including Ethernet, Modbus TCP/RTU, RS-485, CAN, USB, and similar technologies. Review cellular and remote communications architecture. Design and improve safe remote update strategies that minimize the risk of bricking devices in the field. Develop robust OTA update, rollback, recovery, and fail-safe strategies for deployed devices. Improve automated provisioning and configuration management across the device fleet. Work with software and cloud engineers to improve remote hardware diagnostics and system-health monitoring. Develop watchdog, self-diagnostic, remote recovery, and failure-detection strategies. Support MQTT-based device telemetry, command/control, connectivity recovery, and remote management. Improve schematics, wiring diagrams, BOMs, test procedures, and manufacturing documentation. Support production troubleshooting and manufacturing engineering. Establish better hardware design-review, testing, and release processes as Argos scales. Provide technical redundancy and backup for our existing embedded systems engineer. What We're Looking For We care more about demonstrated experience building reliable products than credentials alone.

Ideal candidates will have:

7+ years of embedded systems, electronics, industrial controls, IoT, or related hardware development experience. Experience developing a product that has been deployed in meaningful quantities in the field. Strong understanding of embedded Linux and single-board computing platforms. Experience with microcontrollers, embedded processors, or Linux-based embedded systems. Strong electrical troubleshooting and diagnostic skills. Experience with Ethernet, serial communications, RS-485, Modbus, CAN, USB, and similar interfaces. Experience designing or reviewing DC power systems, power supplies, protection circuits, and power distribution. Experience performing structured root-cause analysis on hardware failures. Understanding of PCB design, schematics, component selection, and electronics manufacturing. Experience with environmental and reliability testing. Familiarity with EMI/EMC design and testing. Experience designing systems intended for unattended or remote operation. Ability to independently review another engineer's design and constructively challenge technical assumptions. Experience managing fleets of embedded Linux or IoT devices deployed in the field. Experience with embedded Linux fleet management and OTA update systems such as Mender, RAUC, SWUpdate, or similar. Understanding of safe update strategies, including rollback, fail-safe recovery, A/B partitioning, bootloader recovery, or equivalent approaches designed to prevent devices from being bricked in the field. Experience with configuration management and automated provisioning tools such as Ansible or similar. Experience with MQTT-based IoT architectures, including brokers, device telemetry, command/control, connection management, and recovery after communications failures. Experience with remote diagnostics, device health monitoring, logging, and remote recovery. Experience That Would Be Especially Valuable Experience with any of the following would be a strong advantage: Industrial IoT products Remote monitoring systems Medical equipment or medical-equipment support systems Industrial automation Raspberry Pi Compute Module or similar embedded Linux platforms Cellular routers and LTE/5G communications Industrial sensors and instrumentation Power monitoring and energy metering Environmental monitoring Hardware watchdogs and remote recovery High-availability or redundant system design Embedded Linux fleet management OTA update systems such as Mender, RAUC, SWUpdate, or similar A/B partitioning, rollback, or fail-safe software deployment strategies Automated device provisioning and configuration management Ansible or similar automation tools MQTT brokers and large-scale MQTT device architectures Remote telemetry, logging, and diagnostics Hardware reliability engineering Design for Manufacturing (DFM) Design for Test (DFT) UL, FCC, CE, EMC, or related product certifications Products expected to remain operational in the field for 5-10+ years How We Think About Hardware We are looking for someone who looks at a system and immediately starts asking questions like: What happens when this component fails? What happens when power is interrupted or unstable? What happens when communications disappear? Can the device recover without someone visiting the site? What happens if an OTA update fails halfway through? How do we update 1,000 devices without creating 1,000 service calls? Can the device automatically roll back to a known-good software version? How do we provision a replacement device without manually configuring everything? Can we diagnose the problem remotely before dispatching a technician? Which components are most likely to fail after five or ten years? How will we know something is beginning to fail? Can a field technician replace the failed component quickly? Could we simplify the architecture? How do we prove that this design will survive thousands of installations? We want an engineer who thinks beyond whether a prototype works. We want someone who thinks about whether a product will continue working years after it leaves the engineering bench — and whether we can securely update, diagnose, and recover that product without physically touching it. Why This Role Matters Argos is transitioning from an engineering platform into a scalable commercial product. As deployment volume increases, strengthening the underlying hardware architecture and remote fleet-management infrastructure is one of our highest priorities. A device that works on the bench is not enough. As the installed base grows, Argos needs a predictable method for provisioning, monitoring, updating, recovering, and replacing devices without creating unnecessary field service. The person in this role will have significant influence over the future architecture of Argos and will help establish the hardware engineering, testing, reliability, OTA update, fleet-management, and product-development practices we use as the platform grows. You will work directly with company leadership and the existing engineering team and will have substantial ownership over the reliability of a product entering large-scale deployment. Application Question Show us something you've built and scaled. Tell us about a hardware, embedded, IoT, or industrial product you personally helped take from prototype into real-world deployment.

We want to know:

What did you build? What was your specific responsibility? How many units were ultimately deployed? How were those devices provisioned, updated, and monitored after deployment? What failed or surprised you once the product reached the field? What changes did you make because of those failures? What would you do differently if you were designing it again today? Photos, schematics, architecture diagrams, test results, or a short project write-up are welcome where confidentiality permits. We care far more about demonstrated experience building and scaling real products than polished interview answers.

Pay:

$100,000.00 - $150,000.00 per year

Benefits:

Dental insurance Flexible schedule Flexible spending account Health insurance Paid time off Tuition reimbursement Vision insurance

Work Location:

Hybrid remote in Marysville, OH 43040