Senior Mobile Developer

Harris Computer; Minnesota; On-site; USD 125,000 - 135,000; Full time

Job summary

Harris Computer is seeking an experienced Mobile Software Engineer to help design and implement scalable, cross‑platform mobile solutions using Kotlin and Swift. You will contribute to architecture, select technologies, and guide a team toward robust, maintainable systems.

The role requires 8+ years in software development with at least 3 years in a senior engineering capacity, cloud and microservices experience, and familiarity with CI/CD pipelines.

Qualifications

• Bachelor's degree in Computer Science, Engineering, related field, or equivalent work experience.
• 8+ years of software development experience with 3+ years as a Software Engineer focused on designing and building complex, scalable systems.
• Deep understanding of software engineering principles, design patterns, algorithms, and system architecture.
• Ability to lead technical discussions, make critical decisions, and drive consensus among team members.
• Experience with cloud technologies and microservices architecture.

Responsibilities

• Contribute to architectural discussions, make design decisions, and ensure the software architecture aligns with business goals.
• Solve complex technical problems and make critical decisions related to technology selection, system architecture, and project planning.
• Provide technical leadership and guidance to junior developers.
• Conduct code reviews to ensure code quality, maintainability, and adherence to coding standards.

Skills

Kotlin

Swift

Jetpack Compose

SwiftUI

MVVM

Dependency Injection

REST APIs

Unit testing

CI/CD

AI tooling

Education

Bachelor's degree in CS or related

Tools

Koin

Retrofit/OkHttp

URLSession

JUnit

Mockito

Robolectric

Espresso

Compose UI test

XCTest

XCUITest

Gradle

Swift Package Manager

Bitrise

Fastlane

Job description

Technical Skills

• Proficiency in Kotlin & Swift: Deep understanding of modern Kotlin (coroutines/Flow, serialization) and Swift (async/await), including the platform runtimes, memory management and concurrency.
• Native UI Frameworks: Experience building production UI with declarative frameworks — Jetpack Compose on Android and SwiftUI on iOS — including state management and lifecycle.
• Architecture & Dependency Injection: Experience with reactive, testable mobile architectures (e.g. MVVM, The Composable Architecture) and dependency injection frameworks such as Koin.
• RESTful API Integration: Experience designing and consuming robust, scalable REST APIs for third-party integrations and internal UI consumption (e.g. Retrofit/OkHttp on Android, URLSession on iOS).
• Testing Frameworks: Proficiency with mobile testing across the pyramid — unit, integration, and UI testing with tools such as JUnit, Mockito, Robolectric, Espresso, and Compose UI test on Android; XCTest and XCUITest on iOS.
• Mobile Tooling & CI/CD: Experience with automated, multi-target build and release pipelines (e.g. Gradle, Swift Package Manager, Bitrise, Fastlane), ideally for white‑label / multi-tenant apps.
• Worked on AI assisted development (e.g. GitHub Copilot, Claude, Cursor or ChatGPT)
• Familiarity with AI directed prompt engineering for developing applications.

Responsibilities and Duties

• Contribute to architectural discussions, make design decisions, and ensure that the overall software architecture aligns with business goals and industry best practices.
• Solve complex technical problems and make critical decisions related to technology selection, system architecture, and project planning.
• Provide technical leadership and guidance to junior members of the development team.
• Conduct code reviews to ensure code quality, maintainability, and adherence to coding standards.

Requirements

• Bachelor's degree or Diploma in Computer Science, Engineering, related field, or equivalent work experience.
• 8+ years of experience in software development, and 3+ years as a Software Engineer with a focus on designing and building complex, scalable systems.
• Deep understanding of software engineering principles, design patterns, algorithms, and system architecture.
• Ability to lead technical discussions, make critical decisions, and drive consensus among team members.
• Experience with cloud technologies and microservices architecture.

Salary range: $125,000 - $135,000 USD per year.