Embedded Software Engineer – ESP

Company Overview

Kaiyan Medical is a leader in light-therapy solutions, transforming advanced light science into innovative programs for beauty, wellness, sports recovery, and clinical care. With a global network of GMP- and ISO 13485-certified facilities and regional hubs in the USA, Europe, India, and Hong Kong, Kaiyan serves partners in over 100 countries. Boasting a strong R&D team, an extensive clinical data library, and numerous phototherapy patents, the company delivers high-quality OEM/ODM solutions that adhere to FDA 510(k), CE, MDSAP, BSI, and UK CA standards.

From flexible wearables to full-body systems, Kaiyan harnesses the power of light therapy to deliver proven results. Learn more at

Alderley Edge, England, United Kingdom

You will be responsible for the design and implementation of embedded software based on Espressif ESP
32
, working closely with hardware, testing, and product teams. The role covers the full lifecycle from requirements and architecture to coding, documentation, debugging, and optimization.

• Define software solutions and evaluate/establish system architecture based on product requirements.
• Participate in requirements analysis, solution design, and C/C++ implementation to ensure on-time delivery.
• Prepare and maintain development documents, technical specifications, and standardized materials to ensure traceability.
• Work with hardware and test teams on system integration, debugging, and performance optimization.
• Participate in design reviews and key technical decisions; help standardize software design and modular development.
• Contribute to coding standards, codebase management, and internal training for the software team.

• College degree or above in Electronics, Communication, Automation, or related fields.
• 3+ years of relevant embedded software development experience.
• Proficient in C/C++, familiar with data structures, and with a solid understanding of the software development lifecycle.
• Hands‑on experience with RTOS development and Espressif ESP
  32
  , familiar with ESP-IDF/ADF development environments.
• Experience with LVGL or other embedded GUI frameworks, able to independently design and implement UIs for color displays.
• Familiar with communication protocols such as Wi‑Fi and BLE
  , and common hardware interfaces including UART, SPI, I²C
  , etc.
• Strong sense of ownership, responsibility, and ability to work under pressure.
• Able to take full ownership of embedded modules or projects. Experience in consumer electronics and/or medical / beauty devices is a strong plus.
• Language: Working proficiency in Chinese (Mandarin) is required for internal communication and documentation.

• Mid‑Senior level

• Full‑time

• Engineering and Information Technology

• Medical Equipment Manufacturing