Senior iOS Engineer: Scale and Elevate Mobile Apps

DraftKings Inc.; Boston (MA); On-site; CAD 110,000 - 150,000; Full time

Job summary

DraftKings Inc. in Canada is seeking a Senior Mobile Engineer, iOS, to shape the future of our mobile products for millions of users. You will define engineering practices and drive scalable, high-quality features with a strong emphasis on performance, reliability, and maintainability.

Collaborate with Product, Design, and Engineering teams to deliver end-to-end features, stay ahead of iOS changes, and foster a culture of technical excellence within the iOS community.

Qualifications

• Bachelor's degree or equivalent in Computer Science or related field.
• 3+ years of experience building and shipping iOS apps with Swift and SwiftUI.
• Strong knowledge of iOS architecture patterns such as MVVM.
• Experience integrating RESTful APIs, managing data and complex app state.
• Familiarity with Design Patterns and OOP concepts.
• Experience with CI/CD pipelines for iOS and XCUITest is a plus.
• Commitment to code quality, reviews, and maintainable code.
• Excellent collaboration with cross-functional teams.
• User-focused mindset translating product and design to intuitive mobile experiences.

Responsibilities

• Develop high-quality iOS applications for millions of users.
• Architect scalable, modular, and maintainable iOS codebases using modern practices.
• Collaborate with Product, Design, and Engineering to deliver features end-to-end.
• Promote iOS best practices: clean architecture, DI, efficient UI rendering.
• Monitor performance, reliability, and crash analytics for improvement.
• Stay updated with iOS platform changes and trends to keep skills current.
• Foster collaboration, innovation, and technical excellence in the iOS community.

Skills

Swift

SwiftUI

MVVM

REST APIs

Design patterns

OOP

CI/CD (iOS)

XCUITest

Unit testing

Communication

Education

Bachelor's degree in Computer Science

Tools

Xcode

Git

CI/CD tooling

Job description

At DraftKings, AI is becoming an integral part of both our present and future, powering how work gets done today, guiding smarter decisions, and sparking bold ideas. It’s transforming how we enhance customer experiences, streamline operations, and unlock new possibilities. Our teams are energized by innovation and readily embrace emerging technology. We’re not waiting for the future to arrive. We’re shaping it, one bold step at a time. To those who see AI as a driver of progress, come build the future together.

The Crown Is Yours

As a Senior Mobile Engineer, iOS, you'll help define the future of our mobile products and help deliver exceptional experiences to millions of users. In this role, you'll shape engineering practices and decisions to ensure new features scale reliably. With deep iOS expertise and a collaborative mindset, you'll champion performance, quality, and maintainability as you guide the evolution of our mobile platform.

What You'll Do

• Develop high-quality iOS applications that deliver engaging, reliable experiences to millions of users.
• Architect scalable, modular, and maintainable iOS codebases, leveraging modern development practices.
• Collaborate closely with Product, Design, and Engineering teams to define and deliver new features end-to-end.
• Promote iOS best practices, including clean architecture, dependency injection, and efficient UI rendering.
• Monitor app performance, reliability, and crash analytics to drive continuous improvement.
• Stay ahead of iOS platform changes, ecosystem updates, and mobile trends to keep the team’s skills and tools cutting-edge.
• Foster a culture of collaboration, innovation, and technical excellence within the iOS engineering community.
  
  
  

What You'll Do

• Bachelor's degree in Computer Science or any relevant combination of education, experience, and training.
• At least 3 years of experience building and shipping iOS applications using Swift and Swift UI development principles.
• Strong knowledge of iOS architecture patterns such as MVVM.
• Experience integrating RESTful APIs, handling data persistence, and managing complex states in mobile apps.
• Strong knowledge of Design Patterns and OOP principles.
• Familiarity with CI/CD pipelines for iOS, automated testing frameworks (XCUITest), and release processes is a plus.
• Strong code quality practices, including code reviews, unit testing, and writing clean, maintainable code.
• Excellent communication and collaboration skills with cross-functional teams.
• A user-focused mindset, with an ability to translate product and design requirements into intuitive mobile experiences.
  
  
  

Join Our Team

We’re a publicly traded (NASDAQ: DKNG) technology company headquartered in Boston. As a regulated gaming company, you may be required to obtain a gaming license issued by the appropriate state agency as a condition of employment. Don’t worry, we’ll guide you through the process if this is relevant to your role.