Sr. Embedded Software Developer

Company Description

Square builds common business tools in unconventional ways so more people can start, run, and grow their businesses. When Square started, it was difficult and expensive (or just plain impossible) for some businesses to take credit cards. Square made credit card payments possible for all by turning a mobile phone into a credit card reader. Since then Square has been building an entire business toolkit of both hardware and software products including Square Capital, Square Terminal, Square Payroll, and more. We’re working to find new and better ways to help businesses succeed on their own terms—and we’re looking for people like you to help shape tomorrow at Square.

Job Description

Our hardware team builds the tangible connection to all that is Square. As we introduce more and more of our products to the world, our hardware footprint expands. In this role, you will be responsible for developing the embedded software in Square’s hardware products. This role will report to the firmware engineering manager for our Connected Hardware products.

You will: 

• Build a common firmware platform for all of Square’s hardware products
• Write code within the constraints of tiny embedded systems
• Move up the stack to write and collaborate on system-side code; including protocol design
• Develop tests to validate product features, drivers, and system functionality
• Build reliable tools to support firmware development and product debugging
• Collaborate with manufacturing, electrical engineering, and release teams

Qualifications

You have:

• 8+ years of relevant industry experience
• A  software development discipline, including modularization, documentation, and test methods
• Firmware / Embedded software development experience
• Experience leading large multi-person projects, from design, implementation, deployment and monitoring phases
• Expertise in C  software development, tools, and debugging
• Understanding of common communications protocols (e.g. SPI, UART, I2C, USB), debugging practices (e.g. JTAG and associated GDB integrations), and electrical design principles
• BS in CS, CE, EE, or equivalent practical experience
• Experience with real-time operating systems
• Experience shipping consumer electronics products
• Experience debugging issues cross functionally, using a combination of software and lab equipment such as oscilloscopes and protocol analyzers

Even better if you have experience in any of the following:

• Experience with wireless protocols (e.g. BLE, NFC)
• Experience using Python (or similar scripting languages) in automated testing, build systems, or device firmware communication

Additional Information

Block takes a market-based approach to pay, and pay may vary depending on your location. U.S. locations are categorized into one of four zones based on a cost of labor index for that geographic area. The successful candidate’s starting pay will be determined based on job-related skills, experience, qualifications, work location, and market conditions. These ranges may be modified in the future.

Zone A: USD $202,500 - USD $247,500
Zone B: USD $192,400 - USD $235,200
Zone C: USD $182,300 - USD $222,800
Zone D: USD $172,200 - USD $210,400

To find a location’s zone designation, please refer to this resource. If a location of interest is not listed, please speak with a recruiter for additional information. 

Benefits include the following:

• Healthcare coverage
• Retirement Plans including company match 
• Employee Stock Purchase Program
• Wellness programs, including access to mental health, 1:1 financial planners, and a monthly wellness allowance 
• Paid parental and caregiving leave
• Paid time off
• Learning and Development resources
• Paid Life insurance, AD&D. and disability benefits 
• Perks such as WFH reimbursements and free access to caregiving, legal, and discounted resources 

This role is also eligible to participate in Block's equity plan subject to the terms of the applicable plans and policies, and may be eligible for a sign-on bonus. Sales roles may be eligible to participate in a commission plan subject to the terms of the applicable plans and policies. Pay and benefits are subject to change at any time, consistent with the terms of any applicable compensation or benefit plans.

We’re working to build a more inclusive economy where our customers have equal access to opportunity, and we strive to live by these same values in building our workplace. Block is a proud equal opportunity employer. We work hard to evaluate all employees and job applicants consistently, without regard to race, color, religi