Senior Mobile Developer

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

Job summary

Harris Computer is seeking an experienced mobile software engineer to design and build scalable applications for Android and iOS. You will apply modern Kotlin and Swift, participate in architectural discussions, and lead code reviews while aligning with business goals.

You will collaborate on AI-assisted tooling, implement robust REST integrations, and contribute to multi-tenant app pipelines using Gradle, Bitrise, and Fastlane.

Qualifications

• 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 focus on 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.

Responsibilities

• Contribute to architectural discussions, make design decisions, and ensure alignment with goals.
• Solve complex technical problems and guide technology selection and planning.
• Provide technical leadership and guidance to junior team members.
• Conduct code reviews to ensure quality, maintainability, and standards compliance.

Skills

Kotlin

Swift

Jetpack Compose

SwiftUI

MVVM

DI (Koin)

REST APIs

Retrofit/OkHttp

URLSession

Unit/UI Testing

JUnit

Mockito

Robolectric

Espresso

XCTest

XCUITest

Gradle

Swift Package Manager

Bitrise

Fastlane

GitHub Copilot

AI tooling

Education

Bachelor's degree / Diploma in CS or related field

Tools

Retrofit/OkHttp

URLSession

Jetpack Compose

SwiftUI

Koin

JUnit

Mockito

Robolectric

Espresso

XCTest

XCUITest

Gradle

Swift Package Manager

Bitrise

Fastlane

GitHub Copilot

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.