Who is Flock?

Flock Safety is an all-in-one technology solution to eliminate crime and keep communities safe. Our intelligent platform combines the power of communities at scale - including cities, businesses, schools, and law enforcement agencies - to shape a safer future together. Our full-service, maintenance-free technology solution is trusted by communities across the country to help solve and deter crime in the pursuit of safer communities for everyone.

Our holistic public safety platform is comprehensive and intelligent, providing the actionable evidence needed to solve, deter and reduce crime across neighborhoods, schools, businesses and entire cities. Without compromising transparency or privacy, we are turning unbiased data into objective answers.

Flock strives to offer a career-defining experience where you can also make an impact on your community. While safety is a serious business, we are a supportive team that is optimizing the remote experience to create strong and fulfilling relationships even when we are physically apart. Our group of hard-working employees thrive in a positive and inclusive environment, where a bias towards action is rewarded. 

We have raised over $700M in venture capital from investors including Tiger Global, Andreessen Horowitz, Matrix Partners, Bedrock Capital, Meritech Capital Partners, and Initialized Capital. Now surpassing a $7.5B valuation, Flock is scaling intentionally and seeking the best and brightest to help us meet our goal of reducing crime in the United States by 25% in the next three years.

The Opportunity

Flock Safety is seeking an Embedded HIL (Hardware-In-the-Loop) Test Engineer to design, develop, and maintain automated validation systems for our STM32-based Drone as a First Responder (DFR) products. This role is pivotal in building a robust, scalable test framework that ensures the reliability, safety, and performance of our aviation infrastructure.

You will own the full lifecycle of the HIL test environment—defining the hardware setup, building simulation and mock frameworks, integrating with our CI/CD pipeline, and collaborating closely with development, QA, and site reliability teams.

The Skillset

• Bachelor’s Degree in Electrical Engineering, Computer Engineering, Computer Science, or related field.

• 5+ years experience in embedded systems development and/or automated testing.

• Strong proficiency in C/C++ for embedded firmware and Python for test automation.

• Proven experience with MCU firmware development (bare-metal and RTOS-based).

• Experience building and maintaining HIL or SIL (Software-In-the-Loop) test systems.

• Familiarity with CI/CD pipelines and automation tools (GitHub Actions, Jenkins, etc.).

• Solid understanding of hardware interfaces: SPI, I²C, UART, CAN, USB.

• Comfortable working in Linux-based development environments, including containers and custom tooling.

• Experience using Git-based workflows.

Preferred Qualifications

• Advanced Degree in in Electrical Engineering, Computer Engineering, Computer Science, or related field

• Experience with ARM Cortex-M microcontrollers, especially STM32 using HAL/LL libraries.

• Hands-on with FreeRTOS (task scheduling, inter-task communication, synchronization).

• Knowledge of CAN bus protocols (CANOpen, J1939, custom messaging).

• Familiarity with Android system integration (ADB flashing, HAL, Android build system).

• Experience in fault injection, reliability testing, and safety-critical systems validation.

• Knowledge of electrical hardware setup, test jig design, and peripheral simulation.

Feeling uneasy that you haven’t ticked every box? That’s okay; we’ve felt that way too. Studies have shown women and minorities are less likely to apply unless they meet all qualifications. We encourage you to break the status quo and apply to roles that would make you excited to come to work every day.

90 Days at Flock

We are a results-oriented culture and believe job descriptions are a thing of the past. We prescribe to 90 day plans and believe that good days, lead to good weeks, which lead to good months. This serves as a preview of the 90 day plan you will receive if you were to be hired in this role at Flock Safety.

The First 30 Days

• Familiarize yourself with the team's product goals and overall system architecture.

• Set up the required hardware and software tools needed to contribute effectively to the development environment.

• Participate in the initial setup and testing of a control system using your local development kit.