Senior Mobile Engineer

About the role

Mattermost is seeking a Senior Mobile Engineer to take ownership of the mobile experience for teams working in defense, intelligence, and critical infrastructure. You will focus on making the mobile application more reliable and performant, particularly in constrained or disconnected network environments. You will work across application and native layers, partner with platform teams, and help shape the next generation of cross-platform mobile architecture.

Responsibilities

• Architect the app for DDIL and other constrained network environments
• Improve data and functional reliability across connection lifecycle, synchronization, recovery, and failure scenarios
• Own crash-free and release-health outcomes using telemetry to identify and resolve regressions
• Profile and improve performance across startup, networking, storage, rendering, memory, and battery usage
• Own critical iOS and Android integrations and the boundaries between native and cross-platform code
• Maintain and evolve platform capabilities including push notifications, background execution, and secure storage
• Mentor engineers on mobile architecture, reliability, performance, and platform best practices
• Uphold security and compliance standards required by government and enterprise customers

Required skills

• iOS development
• Android development
• Mobile architecture
• Networking fundamentals
• Performance profiling
• Production debugging
• React Native
• TypeScript

Nice to have

• Mobile persistence
• Synchronization
• Offline-capable systems
• WebRTC
• CallKit
• Android audio APIs
• MDM
• AppConfig
• Intune MAM

Qualifications

• Ability to meet federal eligibility requirements for U.S. government security clearance
• Ability to meet eligibility requirements for access to export-controlled information under EAR and ITAR

Benefits

• Mission-driven work
• Remote-first culture
• AI-forward environment
• End-to-end ownership
• Open source contribution

About the Company

Mattermost is the leading collaborative workflow platform for defense, intelligence, security, and critical infrastructure. Trusted by the U.S. Department of War and Fortune 500s, the platform delivers secure messaging, file sharing, workflow automation, and project management with full data and operational control.