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Block · 1 month ago

Senior iOS Engineer, Growth Mobile

Bay Area, CA, United States of America

Full-time

Onsite

Senior Level

$218K/yr - $327K/yr

7+ years exp

Block is a technology company focused on increasing access to the global economy. The Senior iOS Engineer will be part of the Growth Mobile team, responsible for creating data-driven mobile experiences that empower sellers, while owning critical features across Square's mobile ecosystem.

Financial Services

H1B Sponsor Likely

Responsibilities

Architect and improve iOS systems for authentication, onboarding flows, payment activation, hardware ordering, referrals, and subscription management

Build server-driven experiences enabling rapid experimentation without traditional release constraints

Lead A/B testing initiatives to optimize activation funnels and drive quarterly conversion improvements

Partner with Android engineers, PMs, designers, and data scientists to deliver data-driven features with platform parity

Implement comprehensive monitoring and observability for critical flows with real-time dashboards

Systematically reduce technical debt while expanding server-driven coverage for same-day deployments

Mentor engineers and establish best practices collaboratively

Support on-call rotation and contribute to cross-platform frameworks like FormContainer

Qualification

IOS developmentSwiftObjective-CA/B testingTechnical mentoringCollaboration skills

Required

7+ years of iOS development experience with deep expertise in Swift and Objective-C

Proven experience in architecting and leading complex iOS projects at scale

Strong collaboration skills, with experience working across teams and functions to deliver cohesive, user-focused solutions

Experience mentoring engineers and leading by influence

Benefits

Remote work

Medical insurance

Flexible time off

Retirement savings plans

Modern family planning

Company

Block

Glassdoor3.9

Block is one company built from many blocks, all united by the same purpose of economic empowerment.

Founded in 1990

Oakland, California, US

10001+ employees

https://block.xyz/

H1B Sponsorship

Block has a track record of offering H1B sponsorships. Please note that this does not guarantee sponsorship for this specific role. Below presents additional info for your reference. (Data Powered by US Department of Labor)

Distribution of Different Job Fields Receiving Sponsorship

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Trends of Total Sponsorships

2025 (257)

2024 (253)

2023 (260)

2022 (297)