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Senior Android Mobile Engineer

Job in Miami, Miami-Dade County, Florida, 33101, USA
Listing for: 3Core Systems, Inc
Seasonal/Temporary position
Listed on 2026-07-20
Job specializations:
  • Software Development
    App Developer - Mobile/Web, Full Stack Developer, Android Developer, Software Engineer
Job Description & How to Apply Below

Lead Android Mobile Engineer

Location:

Miami, FL 33178 (4 days onsite & 1 day remote)

Duration: 6+ months contract

Job Description:

Senior Engineer, Software plays a critical role in the development and enhancement of mobile applications across iOS, Android, and hybrid platforms. This position is responsible for designing, building, and maintaining high-quality, scalable, and secure mobile solutions while ensuring alignment with industry best practices and business objectives.

Senior Engineer, Software is able to take business requirement all the way to a project delivery. Actively contributes to technical architecture decisions, collaborates with cross-functional teams, and drives the implementation of mobile features and functionalities. This role requires deep expertise in native iOS (Swift) and Android (Kotlin) development, as well as experience with hybrid frameworks such as React Native or Flutter.

As part of the development team, the Senior Engineer, Software provides mentorship and technical guidance to junior developers, fostering a culture of continuous learning and innovation. The role also involves troubleshooting and optimizing mobile applications to enhance user experience and maintain operational efficiency.

Collaboration is a key aspect of this role, requiring close interaction with product managers, designers, backend developers, and QA teams to deliver high-quality mobile solutions. The Senior Engineer, Software works within Agile development frameworks, ensuring timely delivery of features while maintaining software excellence.

This position requires strong problem-solving skills, the ability to work in a fast-paced environment, and a commitment to staying updated with emerging mobile technologies. The Senior Engineer, Software plays a crucial role in ensuring that mobile applications support the organization's digital strategy and provide a seamless experience for users.

Importance Major Actions and Supporting Actions:

  • Design & Architecture:
    Lead the design and development of mobile application architectures, ensuring the selection of appropriate frameworks, libraries, and technologies for both native (iOS/Android) and hybrid solutions.
  • Requirements & Development:
    Work closely with product owners, UX/UI designers, and business stakeholders to gather and analyze requirements, translating them into technical solutions.
  • Code Quality & Security:
    Conduct code reviews, enforce best practices, and ensure compliance with mobile development standards, security protocols, and accessibility guidelines.
  • Performance & Scalability:
    Optimize mobile applications for performance, battery efficiency, and responsiveness.
  • Project Support &

    Collaboration:

    Provide accurate estimates for development efforts and collaborate with project managers to define project scope, timelines, and risks.
  • Research & Innovation:
    Stay abreast of emerging mobile technologies, tools, and frameworks to drive continuous improvement and innovation.
  • Mentorship & Leadership:
    Mentor junior and mid-level developers, providing technical guidance and best practices for mobile development.

Experience Details:

  • 5+ years' Experience as a Senior Engineer, Software (Mobile)
  • 5+ years' Experience performing application reviews as it relates to quality, performance, security, and compliance.
  • 5+ years' Experience with Dev Ops /Automation tools and practices.
  • 5+ years' Experience identifying, investigating, and resolving recurring or major IT issues.
  • 5+ years' Experience coordinating and managing changes to IT Systems and infrastructure, ensuring changes are implemented smoothly.
  • 5+ years' Experience with Native and Hybrid Mobile Technologies. Proficiency in Swift/Objective-C for iOS development and Kotlin/Java for Android development. Experience with hybrid frameworks such as React Native or Flutter for cross-platform development. Familiarity with HTML5, CSS3, JavaScript/Type Script for mobile web development.
  • 5+ years Mobile Application Deployment & Analytics. Hands-on experience with mobile analytics tools (e.g., Firebase, Google Analytics, Mixpanel). Expertise in deploying and managing mobile applications on the Apple App Store and Google Play Store, including compliance with their policies and guidelines.
  • 5+ years Mobile SDK Development & API Integration. Skilled in designing and developing mobile SDKs and integrating applications with RESTful APIs, GraphQL, and third-party services. Experience working with OAuth, JWT, and other authentication protocols for secure API interactions.
  • 5+ years Mobile Security & Performance Optimization. Strong understanding of mobile security best practices, including data encryption, secure storage, and biometric authentication. Experience optimizing mobile applications for performance, battery efficiency, and memory management.
  • 5+ years Multi-Platform Development Frameworks. Experience with at least one mobile development framework (e.g., Xamarin, Flutter, React Native) for targeting multiple operating systems. Knowledge of…
Position Requirements
10+ Years work experience
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