Senior+ Embedded​/Firmware Engineer

Hapiko Senior+ Embedded/Firmware Engineer

Full-time embedded engineer, working at the sweet spot where real-time performance meets delightful user experiences.

Hapiko is a Brooklyn-based company building the future of play.

Own firmware that runs on thousands of devices in people's homes. You'll work at the sweet spot where real-time performance meets delightful user experiences, making hardware that feels simple and just works.

• Optimized C/C++ firmware for ESP-based systems
• Real-time audio pipelines with low-latency capture and playback
• Reliable OTA update systems for thousands > millions of devices already in the wild
• Peripheral integrations across displays, printers, and sensors
• Memory and power optimizations that squeeze every bit of performance
• Production-ready firmware built for manufacturing scale

• 5+ years building embedded systems with strong C++ skills
• Deep experience with the ESP platform and toolchain
• Hands-on audio data handling via I2S or PDM
• Comfort with hardware debugging tools like oscilloscopes and logic analyzers
• Experience integrating peripherals via SPI, UART, GPIO
• Experience shipping consumer electronics or high-volume hardware
• Worked with FreeRTOS and task scheduling
• Applied basic audio DSP techniques like filtering and gain control
• Built firmware for manufacturing test and factory workflows
• Written Python scripts for tooling or test automation

• Firmware: C/C++, ESP-IDF, FreeRTOS
• Connectivity:
  WiFi and Web protocols
• Peripherals: TFT displays, thermal printers, various sensors

We're a small, experienced team backed by top investors and moving fast. You'll own the entire firmware stack, influence hardware decisions from the ground up, and help build tech that feels magical and meaningful — while solving real embedded systems challenges.

If you love shipping firmware that powers delightful experiences, we'd love to talk to you!

Location:

NYC only, On-site (flexible on WFH but we like to be in office the majority of the week) in our Brooklyn based office, close to most major train lines.