Square
Principal iOS Engineer, Mobile Performance & Reliability
Square, San Francisco, California, United States, 94199
Company DescriptionSince 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. 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 DescriptionThe Mobile Performance & Reliability team is responsible for guiding Square’s mobile engineering organization to deliver highly performant and reliable experiences to our sellers, while also improving Square’s ability to observe apps in the wild and respond to issues proactively.
As a Principal iOS Software Engineer on the Mobile Performance & Reliability team, you would join the foundational team responsible for driving mobile application quality across all of Square. You would tackle challenges across our entire suite of apps and in some cases the entire iOS platform. You would work closely with the authors and maintainers of some of the most used open-source libraries in the iOS space.
You will:
Identify, scope, and lead complex, strategic projects with wide impact across the company
Lead engineering designs with company-wide impact, ensuring these designs succeed in the long term
Design highly available and resilient systems which can operate no matter the network or device conditions
Collaborate with multiple stakeholders across the company including product, design, legal, support, and other engineering teams
Provide mentorship, expertise and design reviews for engineering teams across Square.
Develop a strategic vision that influences the company’s overall engineering direction, decisions, and the prioritization of the projects on our roadmap
Qualifications
Must-Haves:
15 or more years of professional software development experience
Deep understanding of the iOS platform, Swift, and Objective-C
Ability to break down complex projects into components or milestones that can easily be picked up by other engineers
Skill to investigate and identify the root cause of an issue in an unfamiliar codebase
Motivation to influence our engineering organization to level-up the reliability and performance of the mobile apps we ship.
Demonstrated collaboration with co-workers on cross-functional teams
A strong sense of ownership
Desire to understand and alleviate developer pain points
Desire to facilitate adoption through high-quality documentation, tutorials, samples, and pairing
Nice-to-Haves:
Experience building frameworks related to performance, reliability, observability, and analytics
Experience building engineering tools or profilers related to improve performance and reliability
Experience as a maintainer or contributor to Open Source projects
Experience optimizing the performance of iOS applications
Experience working in a large engineering organization (hundreds of mobile engineers)
Technologies we use and teach:
Swift, Objective-C, Xcode, and Instruments
UIKit, SwiftUI, CoreAnimation, CoreData, MetricKit
Analytics and observability frameworks
Unit tests, snapshot tests, integration tests
Protocol buffers
Bazel for our build environment
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.
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.
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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. 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 DescriptionThe Mobile Performance & Reliability team is responsible for guiding Square’s mobile engineering organization to deliver highly performant and reliable experiences to our sellers, while also improving Square’s ability to observe apps in the wild and respond to issues proactively.
As a Principal iOS Software Engineer on the Mobile Performance & Reliability team, you would join the foundational team responsible for driving mobile application quality across all of Square. You would tackle challenges across our entire suite of apps and in some cases the entire iOS platform. You would work closely with the authors and maintainers of some of the most used open-source libraries in the iOS space.
You will:
Identify, scope, and lead complex, strategic projects with wide impact across the company
Lead engineering designs with company-wide impact, ensuring these designs succeed in the long term
Design highly available and resilient systems which can operate no matter the network or device conditions
Collaborate with multiple stakeholders across the company including product, design, legal, support, and other engineering teams
Provide mentorship, expertise and design reviews for engineering teams across Square.
Develop a strategic vision that influences the company’s overall engineering direction, decisions, and the prioritization of the projects on our roadmap
Qualifications
Must-Haves:
15 or more years of professional software development experience
Deep understanding of the iOS platform, Swift, and Objective-C
Ability to break down complex projects into components or milestones that can easily be picked up by other engineers
Skill to investigate and identify the root cause of an issue in an unfamiliar codebase
Motivation to influence our engineering organization to level-up the reliability and performance of the mobile apps we ship.
Demonstrated collaboration with co-workers on cross-functional teams
A strong sense of ownership
Desire to understand and alleviate developer pain points
Desire to facilitate adoption through high-quality documentation, tutorials, samples, and pairing
Nice-to-Haves:
Experience building frameworks related to performance, reliability, observability, and analytics
Experience building engineering tools or profilers related to improve performance and reliability
Experience as a maintainer or contributor to Open Source projects
Experience optimizing the performance of iOS applications
Experience working in a large engineering organization (hundreds of mobile engineers)
Technologies we use and teach:
Swift, Objective-C, Xcode, and Instruments
UIKit, SwiftUI, CoreAnimation, CoreData, MetricKit
Analytics and observability frameworks
Unit tests, snapshot tests, integration tests
Protocol buffers
Bazel for our build environment
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.
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.
#J-18808-Ljbffr