Who We Are: 

KETOS is ushering in a new era of understanding around one of the most fundamental, critical elements of life: water. Our goal is simple: to improve water quality, safety and conservation – and enhance healthcare on a global scale. We do this by providing the tools and insights needed to optimize water usage, ensure resource efficiency and provide water safety assurance – and by making these tools accurate, affordable and accessible. 

Our blend of innovative patented hardware with an intelligent interactive software fabric provides predictive and actionable insights through data analytics. These make up the core elements of the KETOS platform – and lead to the smart water data needed for smart irrigation, industries and cities. 

Job Summary/Objective: 

KETOS is looking for an experienced Embedded Firmware Engineer to lead and participate in designing, implementing, and supporting KETOS innovative IoT hardware which connects to the Cloud (AWS) for actionable water analytics with predictive insights on water management and monitoring water contaminants. Our systems are  fully automated with the highest caliber of sensitivity and specificity with remote software control. 

Key Responsibilities: 

  • Design and develop embedded firmware for the microcontroller and embedded microprocessor-based systems. 

  • Participate in the entire application development lifecycle, focusing on documenting, coding, testing, debugging and supporting various features. 

  • Use an Agile approach to write elegant, reliable, and self-documenting code 

  • Interface with low-level sensors and peripherals  connected on I2C and SPI buses.

  • Debug and fix hardware/software issues in MCU based  systems 

  • Create engineering specifications and documentation 

  • Collaborate with Hardware, R&D, Cloud Software and QA team to understand integration and testing requirements 

  • Work effectively with cross-functional teams to ensure all issues related to design change are understood in advance of implementation. 

  • Desire and ability to thrive in a fast-paced and dynamic environment 

Skills & Qualifications:

  • Excellent C/C++/Python programming skills with experience in MCUs and embedded system design and development (Familiarity with Eval boards and Kits .e.g. STM32 discovery , ,Nucleo-H7, X86  and aarch64 architectures) 

  • Extensive experience in debugging embedded systems and microcontroller peripherals including I2C/SMB, SPI, UART, ADC and DAC. Must be able to debug bus issues using logic analyzers and oscilloscopes.

  • Solid Understanding of  ARM Cortex M0/M3/M4, STM32, and TI Tiva Series ARM microcontrollers. Should be able to configure boot loaders and SW interfaces

  • Strong hands-on skills in troubleshooting and debugging embedded Linux and Arduino based systems e.g. Stlink and segger/TI debuggers.

  • Good understanding of embedded databases. (couchdb, sqlite etc).

  • Multi-tasking, multi-threading, and/or RTOS experience 

  • Experience with wireless communication techniques and associated protocols such as LoRaWAN, WiFi, BLE >4, cellular communication (LTE and GSM) 

  • Familiarity with low power design practices for battery powered devices and optimizing power consumption for long lasting devices. Understanding of battery charging circuits.

  • Ability to read and understand hardware schematics 

  • Knowledge of Firmware Over-The-Air (FOTA) Update is a plus 

  • Experience with security architecture such as TPM, HSM, TrustZone, TEE, eSE, etc. is a plus 

  • Knowledge of networking connectivity protocols such as TCP/IP, SSL, HTTP, MQTT, AMQP 

  • Familiarity with JSON or XML data formats for cloud-based data collection for services such as AWS IoT or Azure or GCP 

  • Experience with JIRA or other issue tracking software 

  • Experience working in an Agile development environment (Scrum/XP) 

  • Experience with unit testing and unit testing frameworks/tools such as pytest, Unity, CMock, and Ceedling 

  • Excellent documentation practices and communication skills 

  • Commitment to maintaining project schedules and delivering tasks on time 

  • BS or MS degree in Electrical or Computer Engineering with 5+ years working as Embedded Firmware/Software Engineer 

  • 8+ years of industry experience with technical leadership.
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