Staff Mobile Engineer (P4)

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Staff Mobile Engineer (P4) in USA

Twilio
Full time
Email

USA
10/08/2026
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Remote

Responsibilities

Build and own mobile SDKs for identity, authentication, fraud detection, device-signal collection, and emerging agentic identity use cases.
Partner with product and engineering leadership to set direction, translate customer needs into capabilities, and deliver roadmap features.
Collaborate across Twilio and Stytch on architecture, platform integration, and cross-team initiatives.
Author design documents, drive technical decisions, review code, and maintain ownership of shipped systems.
Improve production quality and resilience through observability, incident response, and remediation.
Mentor engineers through pairing, feedback, and knowledge sharing.

Requirements

At least 6 years of professional mobile engineering experience designing, building, and maintaining mobile applications.
Android development experience with fluency in Kotlin or Java.
Expertise with mobile development ecosystems, frameworks, and third-party libraries.
Strong understanding of software engineering practices, monitoring, observability, and maintainable systems.
Experience making high-impact technical decisions and leading technical initiatives.
Bachelor’s degree in Computer Science or related industry experience.
Ability to work non-standard hours, including weekend and holiday on-call rotations.
Excellent written and verbal communication, collaboration, and stakeholder-alignment skills.
iOS development experience is desired.
Familiarity with Kotlin Multiplatform, C, C++, Swift, or Go is desired.
Experience building developer tools or SDKs is desired.

Benefits

Remote-first role based in the US or Canada, with occasional travel for project or team meetings.
Competitive pay, healthcare insurance, retirement savings/401(k), paid sick time, paid personal time off, paid parental leave, wellness leave, and other benefits that vary by location.
May be eligible for equity and a corporate bonus plan.
Participation in a weekend and holiday on-call rotation may be required.

Salary: $171k - $252k/yr

Twilio

Twilio is a software company that strengthens businesses by unifying their data to build insightful paths to customers, making them smarter with every interaction and enabling them to outmaneuver their competition. Twilio improves customer engagement by combining customer data and communications ...

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