Staff Mobile Software Engineer (P4)

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Staff Mobile Software Engineer (P4) in USA new

Twilio
Full time
Email

USA
10/21/2026
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Remote

Responsibilities

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

Requirements

6+ years of professional mobile engineering experience.
Professional 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.
Excellent written, verbal, communication, collaboration, and stakeholder-alignment skills.
Ability to work non-standard hours, including an on-call rotation with weekends and holidays.
Preferred: iOS development experience; familiarity with Kotlin Multiplatform, C/C++, Swift, or Go; and experience building developer tools or SDKs.

Benefits

Remote work in the US or Canada, with occasional travel for in-person project or team meetings.
Competitive pay with region-specific base salary ranges, plus potential equity and corporate bonus eligibility.
Healthcare insurance, 401(k) retirement savings, paid sick time, paid personal time off, paid parental leave, wellness leave, and other benefits.
Occasional in-person attendance may be required for team gatherings, functional off-sites, or customer meetings.

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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