Senior iOS Software Engineer

Role Overview

• 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.
• 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.
• 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.
• 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.
• 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.
• 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.

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).

Tech Stack

• AWS
• Cloud
• Docker
• iOS
• Kubernetes
• Python
• Splunk
• Swift

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.