Senior Mobile Application Developer (Native iOS and Android)

Location: Fully remote

Duration: 5 month contract (possible extensions)

Pay Rate: $68/hr W2 max

Openings: 6

Summary

We are seeking a Senior Mobile Application Developer for a staff augmentation role to design, build, and enhance native iOS and Android applications that perform reliably in offline / low‑connectivity environments. You will work and partner collaboratively with other mobile developers product owners, UI/UX Designer, backend developers and architects, and QE to deliver high‑quality releases.

Key Responsibilities

• Build and maintain production-grade mobile application code using native iOS platform (Swift UI), native Android platform (Kotlin), shared components (KMP – Kotlin MultiPlatform).
• Implement offline‑first architecture: local storage, queued operations, background sync, and conflict handling.
• Optimize app performance (startup time, memory, battery, network usage) and improve reliability.
• Integrate REST APIs and collaborate on contracts optimized for mobile/offline behavior.

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• Write and maintain automated tests; partner with QA on regression and release readiness.
• Participate in Agile ceremonies; contribute to estimates, refinement, and technical approach.
• Perform code reviews and ensure clean, maintainable, well‑documented code.
• Implement assigned epics/features that remain stable under connectivity loss.
• Meet quality standards: test coverage for critical flows, low crash rates, and performance targets.
• Clear documentation of sync logic, data model decisions, object design, etc.

Required Skills & Qualifications

• 10+ years software development with strong depth in native mobile development.
• Proven delivery of native iOS + native Android apps (consumer or enterprise)
• Hands‑on experience building offline capable apps, including:
• Local persistence using SQLDelight

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• Sync patterns (incremental sync, retries/backoff, connectivity detection, background work)
• Data integrity strategies (idempotency, conflict resolution approaches)
• Strong knowledge of mobile architecture patterns (MVVM/Clean Architecture) and best practices.
• Strong debugging and performance profiling skills.
• Agile Practices: Familiarity with Agile methodologies and tools like Azure Boards.
• Soft Skills: Excellent problem-solving abilities, strong communication skills, attention to detail, and teamwork.

Preferred Qualifications

• Experience with secure offline storage (encryption at rest, keychain/keystore, token handling).
• Familiarity with CI/CD for mobile builds (e.g., Azure DevOps).
• Experience in enterprise field/route workflows where offline execution is critical.
• Test automation tooling exposure (UI + integration) and performance/load awareness (even if backend-led)