Senior Software Engineer

2 weeks ago

San Francisco, California, United States Block Full time

Company Description
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. Bring yours to Block.
Job Description
Bitkey sits within the Proto team. Proto's purpose is to accelerate the world's transition to a more open economy by making products that increase access and independence for everyone. The first two initiatives we've identified that represent the biggest impact to this purpose are in the Bitcoin space with Bitcoin mining and Bitkey, a self custody Bitcoin wallet. While we're starting there, we don't believe the need for tools to increase one's independence is limited to bitcoin or the financial space. One principle across everything we do in Proto is open development - show and tell. We develop products in the open , you can read more about them at and
We are growing our small cross-discipline engineering team and are looking for a mobile engineer who has experience with or is open to learning Kotlin Multi Platform. We have blurred the lines of a traditional Android and iOS team by focusing on the right, single solution across multiple platforms in efforts to make it simple and easy to move bitcoin on and off Bitkey.
You will:

  • Ship a non-custodial, hardware-enabled bitcoin wallet to a global audience
  • Work closely with designers and product managers to build user experiences the people trust to move bitcoin on and off Bitkey
  • Directly impact architecture and design decisions to ensure we successfully scale globally
  • Work with a small team of engineers across our Mobile Application (KMP, Kotlin, Swift) and Rust backend on a team responsible for features from ideation through long-term maintenance


Qualifications
You have:

  • 5+ years of experience developing in one of the following languages: Swift (iOS), Kotlin (Android Multiplatform), Rust (Backend Services)
  • Experience with designing and building APIs between mobile applications and backend services
  • Experience working with small cross-functional teams working on 0->1 features
  • Interest in the opportunities and challenges that come with building a global-first product from the ground up
  • Interest in Bitcoin and expanding financial access to everyone


Technologies we use:

  • Mobile Application
    • Kotlin
    • Kotlin Multiplatform
    • Swift
    • SQLite
  • Backend Services
    • AWS
    • DynamoDB
    • Rust
  • Other
    • Github
    • Datadog


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 $198,000 - USD $297,000
Zone B: USD $188,100 - USD $282,100
Zone C: USD $178,200 - USD $267,400
Zone D: USD $168,300 - USD $252,500
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.
Full-time employee benefits include the following:

  • Healthcare coverage (Medical, Vision and Dental insurance)
  • Health Savings Account and Flexible Spending Account
  • 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 (including 12 paid holidays)
  • Paid sick leave (1 hour per 26 hours worked (max 80 hours per calendar year to the extent legally permissible) for non-exempt employees and covered by our Flexible Time Off policy for exempt employees)
  • Learning and Development resources
  • Paid Life insurance, AD&D, and disability benefits


These benefits are further detailed in Block's policies. 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, religion, gender, national origin, age, disability, veteran status, pregnancy, gender expression or identity, sexual orientation, citizenship, or any other legally protected class.
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 .
Additionally, we consider qualified applicants with criminal histories for employment on our team, assessing candidates in a manner consistent with the requirements of the San Francisco Fair Chance Ordinance.
We've noticed a rise in recruiting impersonations across the industry, where individuals are sending fake job offer emails. Contact from any of our recruiters or employees will always come from an email address ending with @ , @ , @ , or , @ .
Block, Inc. (NYSE: SQ) is a global technology company with a focus on financial services. Made up of Square, Cash App, Spiral, TIDAL, and TBD, we build tools to help more people access the economy. Square helps sellers run and grow their businesses with its integrated ecosystem of commerce solutions, business software, and banking services. With Cash App, anyone can easily send, spend, or invest their money in stocks or Bitcoin. Spiral (formerly Square Crypto) builds and funds free, open-source Bitcoin projects. Artists use TIDAL to help them succeed as entrepreneurs and connect more deeply with fans. TBD is building an open developer platform to make it easier to access Bitcoin and other blockchain technologies without having to go through an institution.
While there is no specific deadline to apply for this role, on average, U.S. open roles are posted for 70 days before being filled by a successful candidate.

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