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Senior Software Engineer, Web Payment Experience
at Square
about 1 year ago | 804 views | 2 applications

Senior Software Engineer, Web Payment Experience

New York, Remote

About the company

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. To solve this problem, we expanded into software and built integrated solutions to help sellers sell online, manage inventory, 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.

Job Summary

The Web Payment Experience team builds JavaScript SDKs and complementary UIs for developers who want to take payments with Square on their websites. Thousands of developers use our code to power the payments capabilities that millions of merchants depend on. We build the tools to make that not just possible but also accessible. Just like front-end frameworks like React and Vue make it easier to build complex single-page apps, we're building frameworks to simplify the complexity of taking payments.

Want to learn more? See what we've built so far at (and think about all the ways you can help make this experience better).

As a senior software engineer on the Web Payment Experience team, you will… • Develop the JavaScript APIs and UI responsible for 1st and 3rd party developers’ experiences using our platform • Develop and maintain the APIs for our tokenization platform • Work across the stack to build reliable and delightful experiences for thousands of developers and millions of Square Merchants • Mentor other engineers and contribute to the direction of the team • Be a student of the web and browsers, keeping up-to-date with frontend engineering trends, tooling, and best practices • You will report to the Engineering Manager for Web Payment Experience in North America

Qualifications: • 5+ years of industry experience • A desire to build Square's developer platform, where we succeed when our merchants and developers succeed • Experience with modern JavaScript and browser-native Web APIs • An interest in working full-stack, from developing extensible JavaScript SDKs for the browser to building scalable backend services that power our tokenization platform

Nice to have: • Experience with payments on the web • Experience with browser security concepts • Experience building extensible, approachable SDKs for developers • Experience with AWS, specifically CloudFront and Lambda

Technologies we use and teach: • JavaScript • TypeScript • Go

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 $167,300 - USD $204,500

Zone B: USD $158,900 - USD $194,300

Zone C: USD $150,600 - USD $184,000

Zone D: USD $142,200 - USD $173,800

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.

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.

Learn more about our efforts to promote inclusion and diversity at

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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