Senior iOS developer
Grainger ·
- Seniority
- Senior
- Employment
- Full time
- Category
- Mobile
- Visa sponsorship
- No
- Company size
- 1000+
- Salary
- USD 112,900 – 188,100 / year
Grainger ·
Grainger Businesses · Chicago, Cook County
Grainger Businesses · Chicago, Cook County
Grainger Businesses · Chicago, Cook County
W. W. Grainger · Kentucky, United States
Senior iOS engineer on Grainger's Sales Enablement Mobile Team in Chicago (hybrid), building native iOS tools that help Sellers serve customers on the go. Day-to-day is hands-on Swift/SwiftUI development, Python-based BFF APIs, testing, observability, and mentoring other engineers.
Work Location Type: Hybrid
Req Number 334416
About Grainger
W.W. Grainger, Inc. is a leading broad line distributor with operations primarily in North America and Japan. At Grainger, We Keep the World Working® by serving more than 4.6 million customers worldwide with maintenance, repair and operating (MRO) products and value-added solutions delivered through innovative technology and deep customer expertise. Known for its commitment to service and purpose-driven culture, the Company reported 2025 revenue of $17.9 billion. For more information, visit
Compensation
The anticipated base pay compensation range for this position is $112,900.00 – $188,100.00. This role is eligible for an incentive target of up to 10%, based on the achievement of individual and company performance objectives in accordance with the current terms of the incentive program which are subject to change.
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.
Rewards and Benefits
With benefits starting on day one, our programs provide choice and flexibility to meet team members' individual needs, including:
For additional information and details regarding Grainger’s benefits, please click on the link below:
Grainger Benefits
The pay range provided above is not a guarantee of compensation. The range reflects the potential base pay for this role at the time of this posting based on the job grade for this position. Individual base pay compensation will depend, in part, on factors such as geographic work location and relevant experience and skills.
The anticipated compensation range described above is subject to change and the compensation ultimately paid may be higher or lower than the range described above.
Grainger reserves the right to amend, modify, or terminate its compensation and benefit programs in its sole discretion at any time, consistent with applicable law.
Position Details
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.
You will
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.
Practice Swift's modern concurrency features to integrate, test, and execute requirements for application features.
Apply your knowledge of C++ integration techniques to enable Swift interoperability.
Champion Grainger’s strong engineering culture by modeling sensible defaults:
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.
You have
3+ 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).
We are committed to equal employment opportunity regardless of race, color, ancestry, religion, sex (including pregnancy), national origin, sexual orientation, age, citizenship, marital status, disability, gender identity or expression, protected veteran status or any other protected characteristic under federal, state, or local law. We are proud to be an equal opportunity workplace.
We are committed to fostering an inclusive, accessible work environment that includes both providing reasonable accommodations to individuals with disabilities during the application and hiring process as well as throughout the course of one’s employment, should you need a reasonable accommodation during the application and selection process, including, but not limited to use of our website, any part of the application, interview or hiring process, please advise us so that we can provide appropriate assistance.
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