Senior iOS Software Engineer

Grainger Businesses•Chicago, IL

31d•Hybrid

About The Position

You will join the Sales Enablement Mobile Team, contributing to the development of iOS mobile tools that empower our Sellers to better serve the ones who get it done. As a Senior Engineer on the Sales Enablement Mobile Team, you will play a pivotal role in shaping the mobile user experience and building scalable, high-performance mobile applications that streamline how Sellers engage Customers and their team members while on the go. You’ll partner with cross-functional stakeholders to build, evolve, and modernize Grainger’s digital experience, with a strong focus on quality, performance, and long-term maintainability. This is a hands-on role requiring deep expertise in native iOS development and Backend-for-Frontend (BFF) architectures, combined with strong technical leadership, mentorship, and collaboration skills. This position is not eligible for any form of sponsorship now or in the future. Individuals requiring sponsorship (e.g. OPT or H1B visa status) should not apply. Only individuals authorized to work in the United States now and for the foreseeable future will be considered for this position.

Requirements

5+ years of professional experience in software engineering with a strong focus on native iOS application development.
Experience building component-based architectures.
Proven ability to drive engineering quality through unit testing, shared ownership, and clean code practices using tools such as XCTest, Swift Testing, XCUITest, or Espresso
Experience collaborating across teams to implement observability standards that support production readiness, faster debugging, and proactive system health monitoring using tools like DataDog, Splunk etc.
Solid understanding of Backend-for-Frontend (BFF) patterns and best practices for designing and securing APIs.
Hands-on experience in CI/CD environments (e.g., GitHub Actions), with a strong understanding of deployment pipelines and version control workflows.
Proven track record of rapidly advancing early-stage iOS applications from concept to production.
Passion for user experience and attention to detail in design execution.
Cloud platform experience (AWS) and containerization basics (Docker, Kubernetes).

Responsibilities

Design and develop responsive, accessible, and performant UI applications using Swift, SwiftUI
Collaborate in the design and development of APIs that support the mobile application, leveraging Python.
Partner with Architects and other mobile focused developers, contributing to Architectural Decision Records (ADRs).
Mentor and elevate engineers through technical deep-dives, design reviews, and code walkthroughs.
Drive continuous delivery practices by improving CI/CD pipelines, test strategies, and build automation.
Instrument applications for performance and proactively address tech improvements and system health.
Advocate for and implement best practices in front-end engineering, including component reusability, separation of concerns, and performance optimization.
Lead by example in delivering small, iterative stories using trunk-based development.
Foster a culture of pairing, shared ownership of quality, and test-driven development (TDD).
Promote fast builds, automated deployments, and production-ready code with built-in observability, resilience and security.

Benefits

Medical, dental, vision, and life insurance plans with coverage starting on day one of employment and 6 free sessions each year with a licensed therapist to support your emotional wellbeing.
18 paid time off (PTO) days annually for full-time employees (accrual prorated based on employment start date) and 6 company holidays per year.
6% company contribution to a 401(k) Retirement Savings Plan each pay period, no employee contribution required.
Employee discounts, tuition reimbursement, student loan refinancing and free access to financial counseling, education, and tools.
Maternity support programs, nursing benefits, and up to 14 weeks paid leave for birth parents and up to 4 weeks paid leave for non-birth parents.

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