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Square Inc.

Senior Software Engineer, Android Payment SDKs

Square Inc., San Francisco, California, United States, 94199


Senior Software Engineer, Android Payment SDKs

Full-time

Since we opened our doors in 2009, the world of commerce has evolved immensely, and so has Square. After enabling anyone to take payments and never miss a sale, we saw sellers stymied by disparate, outmoded products and tools that wouldn’t work together.

So we expanded into software and started building integrated, omnichannel solutions – to help sellers sell online, manage inventory, offer buy now, pay later functionality through Afterpay, book appointments, engage loyal buyers, and hire and pay staff. Across it all, we’ve embedded financial services tools at the point of sale, so merchants can access a business loan and manage their cash flow in one place.

Today, we are a partner to sellers of all sizes – large, enterprise-scale businesses with complex operations, sellers just starting, as well as merchants who began selling with Square and have grown larger over time. As our sellers grow, so do our solutions. There is a massive opportunity in front of us. We’re building a significant, meaningful, and lasting business, and we are helping sellers worldwide do the same.

Our Payment SDK teams serve both third-party developers who create their own applications using Square’s ecosystem, and also our own developers creating Square’s own applications. Our external customers include some of Square’s largest, and internally we collaborate with unusually many other teams, from device firmware to server APIs and services, from low-level security and account identity to developer support and sales engineering.

You Will:

Design and implement features to expand the Android SDK products’ addressable market to new developers, merchants, and buyers.

Help balance the external-facing and internal-facing demands, including designing APIs and systems that meet the sometimes-competing needs of both.

Collaborate with some truly excellent teammates, both in the SDK team and adjacent to it, and help to onboard new engineers and develop the existing ones to remain excellent and to further improve both your peers and yourself.

You Have:

At least eight years’ experience as a software engineer, including at least several years’ experience working in Kotlin on Android in a professional environment.

Experience not only implementing significant projects, but in resolving ambiguous and competing goals, identifying requirements, and designing and decomposing a tractable solution to those needs.

Experience in refactoring a complex code base, maintaining it and adapting to both changing circumstances and to correct past errors and misjudgements.

Experience mentoring both junior and peer teammates, as well as receiving and learning from both peer and senior colleagues and management.

It’s a plus if you have developed Android SDKs as opposed to only applications.

It’s similarly a plus if you’ve previously worked with payments, in finance, or in some other highly-regulated field or context.

It’s a plus if you’ve had end-to-end ownership of something, and particularly ownership of build and release stages as well as feature layers.

It’s a plus if your prior work included client/server communications and dependency injection.

Technologies We Use and Teach:

Kotlin

Common Android tools and libraries, such as Dagger dependency injection, OkHttp and Retrofit communications, Google protocol buffers.

Finance and Payment regulations, both in the US and in countries where Square operates.

Testing frameworks and methodologies at a variety of levels, from simple unit tests to UI tests and nearly full-stack integration tests to humble manual testing.

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.

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

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.

Block will consider qualified applicants with arrest or conviction records for employment in accordance with state and local laws and “fair chance” ordinances.

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