Own backend services that power core features across both apps—caller ID lookups, spam/fraud detection, call screening, real-time scam alerts, call transcription, and AI-generated summaries. This includes designing service architecture, writing production code, deploying to AWS, and operating systems at scale with high availability and low latency.
Build and maintain mobile integrations that connect backend services to iOS and Android applications. You'll collaborate closely with mobile engineers to ensure seamless SDK behavior across platforms, debug platform-specific issues, and ship features that work reliably for millions of users.
Scale infrastructure to support growing user bases and new feature development. You'll make decisions about how to handle increasing load, optimize costs, and maintain reliability as both products evolve.
Make architectural and implementation decisions that balance speed, quality, and long-term maintainability. You'll encounter ambiguous problems—how to handle edge cases in call screening logic, how to structure services for rapid iteration on AI features, how to maintain a shared backend that serves two distinct products—and you'll drive toward solutions with ownership of the outcome.
Collaborate across engineering, product, and design to ship features that matter. The Mobile Experience team operates with high autonomy, which means you'll be involved in shaping what we build, not just how we build it.

Requirements

Experience shipping Node.js services in production environments
Strong knowledge of AWS infrastructure and services (deployment, scaling, monitoring)
Experience building backend systems that serve mobile applications
Familiarity with iOS and/or Android development—enough to collaborate effectively on SDK integration and debug platform-specific issues
Ability to design and operate services with high availability and low latency requirements
Clear communication and the ability to work effectively with distributed teams (Seattle and London)
Familiarity with AI-assisted development techniques and workflows

Benefits

Employer-sponsored Insurance
Medical, dental, and vision (PPO & HDHP); 50% dependent coverage
Health, flexible spending, and dependent care accounts
Life, AD&D, and accident coverage, with company-paid life and long-term disability
401(k) with 3% company match (via Fidelity)
Flexible vacation policy and paid company holidays
Paid parental leave
Work-from-home equipment stipend
$1,000 annually to invest in your learning and growth
$1,000/year in charitable donation matching
Team lunch 2x per week

Applicant Tracking System Keywords

Tip: use these terms in your resume and cover letter to boost ATS matches.

Hard Skills & Tools

Node.jsAWSbackend systemsmobile applicationshigh availabilitylow latencyAI-assisted developmentservice architectureproduction codescaling

Soft Skills

clear communicationcollaborationproblem-solvingownershipautonomydebuggingdecision-makingadaptabilityteamworkinterpersonal skills