Staff Software Engineer, Backend - Proto

Block is one company built from many blocks, all united by the same purpose of economic empowerment. The blocks that form our foundational teams - People, Finance, Counsel, Hardware, Information Security, Platform Infrastructure Engineering, and more - provide support and guidance at the corporate level. They work across business groups and around the globe, spanning time zones and disciplines to develop inclusive People policies, forecast finances, give legal counsel, safeguard systems, nurture new initiatives, and more. Every challenge creates possibilities, and we need different perspectives to see them all.
The Role
Proto is accelerating the world's transition to an open economy with products that increase access and independence for everyone. We're building Bitkey, a simple and safe self-custody bitcoin wallet that will put customers in control, as well as hardware and software that will help decentralize bitcoin mining and enable new and innovative use cases for bitcoin mining. We're developing these products in the open - you can read more about them at bitkey.build and mining.build. Within Proto, our Bitcoin Products team delivers the product and go-to-market strategy, software, firmware, and custom silicon needed to make Bitkey and our ambitious mining initiatives a reality.
We are seeking a skilled fullstack engineer (with focus more on the backend) for ProtoOS and ProtoFleet. These two products aim to bring the best user experience in the world for miners to control their operation and connect with external services such as pools and miner management systems. Our approach is to give customers a significantly greater degree of control and diagnostic capability than what currently exists in the market. This role will be essential in making this experience a reality, not only focusing on how a miner may use our software to run their fleet, but ensuring we do it in a safe and secure manner.
You Will

• Design and implement APIs for bitcoin miner connectivity.
• Develop APIs to support real-time KPI monitoring, bulk deployment of settings, and parameter updates.
• Integrate miner fleet management systems with third-party tools for monitoring.
• Ensure secure and stable local connectivity for bitcoin mining hardware.
• Collaborate with hardware teams to validate mining system performance.
• Work closely with engineering and product teams to meet milestones, including upcoming demos and pilots, and our eventual launch later in the year.

You Have

• A minimum of 8 years professional experience building software
• Experience developing backend applications that communicate across the network.
• Experience with API design and implementation, particularly in real-time systems.
• Experience building relational databases for transactional and analytical workloads
• Expertise developing highly concurrent or asynchronous web application using NodeJS and Typescript or similar languages such as Go, Kotlin, Rust or Ruby
• Strong problem-solving skills and attention to detail.
• Ability to work in a fast-paced, milestone-driven environment.
• Bonus:Familiarity with bitcoin mining hardware and protocols.
• Experience working with Electron or Tauri application frameworks.
• Experience implementing secure web authorization and authentication schemes.

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 an equal opportunity employer evaluating all employees and job applicants without regard to identity or any legally protected class. We also consider qualified applicants with criminal histories for employment on our team, and always assess candidates on an individualized basis.
We believe in being fair, and are committed to an inclusive interview experience, including providing reasonable accommodations to disabled applicants throughout the recruitment process. We encourage applicants to share any needed accommodations with their recruiter, who will treat these requests as confidentially as possible. Want to learn more about what we're doing to build a workplace that is fair and square? Check out our I+D page .
Block will consider qualified applicants with arrest or conviction records for employment in accordance with state and local laws and "fair chance" ordinances.
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.
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.
Zone A:
$217,800 - $326,800 USD
Zone B:
$207,000 - $310,400 USD
Zone C:
$196,100 - $294,100 USD
Zone D:
$185,200 - $277,800 USD
Every benefit we offer is designed with one goal: empowering you to do the best work of your career while building the life you want. Remote work, healthcare coverage, flexible time off, and modern family planning are just some of our offerings. Check out our other benefits at Block.
Block, Inc. (NYSE: XYZ) builds technology to increase access to the global economy. Each of our brands unlocks different aspects of the economy for more people. Square makes commerce and financial services accessible to sellers. Cash App is the easy way to spend, send, and store money. Afterpay is transforming the way customers manage their spending over time. TIDAL is a music platform that empowers artists to thrive as entrepreneurs. Bitkey is a simple self-custody wallet built for bitcoin. Proto is a suite of bitcoin mining products and services. Together, we're helping build a financial system that is open to everyone.