Senior Software Engineer, Payments

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, 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. Afterpay furthers our goal to provide omnichannel tools that unlock meaningful value and growth, enabling sellers to capture the next generation shopper, increase order sizes, and compete at a larger scale.
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. .
The Role
As a software engineer on the Payments team, you will develop the Payments Platform services and infrastructure that securely move money for Square. You will be involved in the technical details of building available and reliable services, while also working with product teams to allow Square to build new capabilities for our merchants and buyers all over the world.
You Will

• Work with engineering, product, and other partners to build software that is clean
• Develop modern APIs that integrate different surfaces with server backends
• Promote engineering of well-designed, reusable and secure systems to improve payment acceptance and secure Square customers
• Promote engineering best practices and help define technical roadmap for the team
• Focus on delivering fault tolerant systems that allow teams to move quickly without negatively affecting our customers
• Raise awareness and promote adoption of new authentication mechanism within Square and beyond
• Complete on-site responsibilities at the Toronto hardware lab as needed

You Have

• 5+ years of software engineering experience
• Experience in delivery of high-scale software solutions
• Willingness to collaborate and grow as an engineer
• Expertise in C and Python development

Even Better

• Experience with EMV Specifications, Credit/Debit Chip Specifications
• Experience working building software for payment terminals
• Experience working in payments industry
• Experience with firmware development for devices.

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 throughout the recruitment process. If you require an accommodation, let your recruiter know.
Want to learn more about what we're doing to build an inclusive workplace? Check out our Inclusion & Diversity page .
Block takes a market-based approach to pay, and pay may vary depending on your location. Canada locations are categorized into one of two 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:
$138,500 - $207,700 CAD
Zone B:
$133,700 - $200,500 CAD
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. Check out benefits at Block.
Block, Inc. (NYSE: SQ) is a global technology company with a focus on financial services. Made up of Square, Cash App, Spiral, and TIDAL, 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.