Principal Electrical Engineer

About Us:

Butlr is on a mission to make the built environment people-aware. We live and work in houses and buildings that aren't aware of their inhabitants. We heat and cool spaces when no one is in them, clean areas that haven't been used, and lease office space that no one is using. Our vision is to enable smarter buildings and increase the quality of life while respecting privacy. 

Spun out of the MIT Media Lab in 2019 with offices in Silicon Valley and Boston, Butlr was founded by Forbes 30 Under 30 entrepreneurs Honghao Deng and Jiani Zeng. Butlr pioneers in space occupancy and people sensing technologies and delivers rich spatial intelligence for workplace, retail, and healthcare use cases. We help customers revolutionize the way they operate in human-centric environments, ensuring efficiency and productivity at every step.

We are backed by top venture capital institutions and strategic investors such as Foundry Group, Tiger Global, Qualcomm Ventures, E14 Fund, and Carrier, among others. We are recognized as one of Fast Company's "2024 Most Innovative Companies", Inc. Magazine's "2023 Best in Business'' (AI & Data Category), World Economic Forum's Top Innovator in YES San Francisco Challenge, among other awards/recognitions. We operate with top occupiers, landlords, care facilities, and service providers in North America, Europe, and Asia. We pride ourselves in providing exceptional solutions and service to numerous prestigious customers, tech giants, and world's largest conglomerates and brands.

We are hiring talented and passionate people to join our team to help us continue our rapid growth. 

About the Role:

We are seeking a highly skilled and motivated Electrical Engineer specializing in sensors and RF (Radio Frequency) circuits to join our team. The ideal candidate will be responsible for designing, developing, and optimizing electronic systems that integrate sensor technologies in low power embedded platforms. This role requires strong technical expertise, innovative problem-solving, and the ability to collaborate across multidisciplinary teams.

This role is an excellent opportunity for an engineer passionate about pushing the boundaries of sensor and RF circuit technology optimizing the built environment. If you thrive on innovation and enjoy tackling complex challenges, we encourage you to apply.

Requirements:

• Bachelor’s or Master’s degree in Electrical Engineering or a related field. A Ph.D. is a plus
• 10+ years of experience in board design and testing for embedded platforms integrating novel sensors
• Experience with high-speed circuit design and testing. Familiarity with RF testing equipment and methodologies
• Experience designing low power circuits for battery powered applications
• Proficiency in circuit design and simulation tools (e.g., SPICE, MATLAB). 
• Hands-on experience with PCB design tools (e.g., Altium, Cadence, Eagle)
• Strong knowledge of microcontrollers, power supplies, and sensor interfaces
• Ability to analyze and interpret technical drawings, schematics, and data sheets
• Proficient in RF circuit design, including impedance matching and low-noise amplifier design
• Experience with sensor technologies such as MEMS, optical, thermal, and radar sensing
• Knowledge of wireless communication protocols (e.g., Bluetooth, Wi-Fi, Zigbee, LoRa)
• Able to independently lead and work through complex problems with minimal supervision
• Familiarity with compliance testing and certification processes
• Experience working with contract manufacturing partners

Bonus Qualifications:

• Knowledge of FPGA, ASIC, or embedded systems design
• Background in antenna design and analysis
• Proficiency in programming for automated testing (e.g., Python, MATLAB)
• Fluency in Mandarin
• Experience in automation and writing Firmware related automation scripts
• Experience with Lithium battery modeling and performance analysis

Responsibilities:

• Design, prototype, and test circuits including RF, low power MCUs and peripherals for sensor applications
• Develop sensor interface electronics for applications such as IoT use cases
• Optimize designs for performance, power efficiency, and cost
• Perform circuit-level simulations using tools such as SPICE, HFSS, or similar
• Model and simulate RF and sensor performance to predict and mitigate potential issues
• Design schematic diagrams and guide PCB layout using tools like Altium Designer, Eagle, or KiCad
• Build and test circuit prototypes to verify functionality and performance
• Debug and troubleshoot circuits to address design and manufacturing issues. Document  and maintain testing results for compliance and reporting
• Conduct lab testing and validation of RF circuits and sensor systems
• Utilize network analyzers, spectrum analyzers, and oscilloscopes to measure and optimize RF and antenna performance
• Communicate technical results and trade-offs effectively to stakeholders. Participate in design reviews to ensure project alignment and quality
• Stay up to date with advancements in RF and novel sensor technologies, researching emerging trends and proposing innovative solutions for future products
• Create comprehensive design documentation, including schematics, layouts, and test reports
• Ensure designs meet industry standards and regulatory requirements (e.g., FCC, CE, UL etc.)

Salary:  $165k - $200k

Benefits:

• World-class team with low ego.
• A work environment that is flexible
• Comprehensive health benefits package
• Retirement savings plan
• Flexible time off
• Professional development opportunities

Why working at Butlr is great!

We are building a culture that puts people first! We’re a team of engaging, motivated, and intelligent problem-solvers who are committed to making an impact. We believe in fostering a culture of healthy work-life balance, and we encourage an inviting, collaborative, fun work environment.

Butlr is an equal opportunity employer. We celebrate diversity and are committed to creating an inclusive environment for all employees. We encourage applicants of all backgrounds to apply!

Disclaimers

Butlr provides equal employment opportunities to all employees and applicants for employment and prohibits discrimination and harassment of any type without regard to race, color, religion, age, sex, national origin, disability status, genetics, protected veteran status, sexual orientation, gender identity or expression, or any other characteristic protected by federal, state or local laws. This policy applies to all terms and conditions of employment, including recruiting, hiring, placement, promotion, termination, layoff, recall, transfer, leaves of absence, compensation and training.

Please note this job description is not designed to cover or contain a comprehensive listing of activities, duties or responsibilities that are required of the employee for this job. Duties, responsibilities and activities may change at any time with or without notice.