Staff Software Engineer - Cash Cards

  • Full-time

Company Description

It all started with an idea at Block in 2013. Initially built to take the pain out of peer-to-peer payments, Cash App has gone from a simple product with a single purpose to a dynamic ecosystem, developing unique financial products, including Afterpay/Clearpay, to provide a better way to send, spend, invest, borrow and save to our 47 million monthly active customers. We want to redefine the world’s relationship with money to make it more relatable, instantly available, and universally accessible.

Today, Cash App has thousands of employees working globally across office and remote locations, with a culture geared toward innovation, collaboration and impact. We’ve been a distributed team since day one, and many of our roles can be done remotely from the countries where Cash App operates. No matter the location, we tailor our experience to ensure our employees are creative, productive, and happy.

Check out our locations, benefits, and more at

Job Description

We build the best physical financial products in the world - starting with cards. We are the only team within Cash App that delivers hardware to our customers. Our innovative card customization design experience and card products have steadily driven the adoption of Cash Card as the top-of-wallet spending device for our customers.

As a member of the team, you will own the design, implementation and improvement of Cash Card products and features. Not only will you get to ship awesome new products and features, you'll also optimize them to provide the best experience to our customers and maximize their engagement. We build our services over Cash App's ever-evolving infrastructure, and as a senior engineer on the team, you will embrace these changes and scale our card stack to enable future evolvability.

You will:

  • Be actively involved in setting the strategic direction for the team and growing the product roadmap. 
  • Be object oriented, fearlessly take on new technical challenges and drive deliverables. 
  • Build highly performant systems that can handle millions of card orders per month.
  • Demonstrate rigor in high code quality, good test coverage and other engineering best practices. 
  • Work cross-functionally with other engineering teams, design, product, data science and our operations team to design new service features.
  • Design fault-tolerant systems with robust observability so the team can iterate quickly and take calculated risks without negative impact reaching our customers
  • Lift the skills and expertise of others on the team as a technical leader
  • Build incrementally, test everything, and deploy often


You have:

  •  8 or more years of software development or equivalent experience
  • Experience building highly scalable, low-latency global systems
  • A sense of developer empathy that reflects into the product and feature design.
  • A vested interest in advancing Cash App's vision of building for economic empowerment
  • Growth mindset and a healthy comfort with ambiguity
  • Strong communication skills
  • A focus on customer outcomes

Technologies we use and teach

  • Kotlin, Java
  • Event-driven microservice architecture
  • HTTP, JSON, gRPC, Protocol Buffers
  • OkHttp, Jetty, JUnit, Guice
  • Hibernate, MySQL, Aurora, TiDB, DynamoDB
  • SignalFx, DataDog
  • AWS Cloud Services
  • Kafka and Eventing system

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.

US and Canada EEOC Statement

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, 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, and always assess candidates on an individualized basis.


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.

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