Responsibilities:
Own the React Native mobile app—lead development, architecture, deployment (i OS + Android).
Architect & scale AWS serverless infra: Lambda, Dynamo DB, S3, API Gateway, App Sync, SNS/SQS.
Build robust mobile-first APIs: sub-200 ms response times powering real-time features.
Ship growth levers: referrals, feature flags, A/B tests, pricing experiments.
Lead code reviews & set engineering standards that scale.
Optimize for viral growth: handle spikes from 10 K to 1 M+ concurrent users at launch.
Requirements:
5+ yrs building consumer back-ends at 100 K+ MAU scale, plus proven mobile-app deployment.
React Native mastery—complex state mgmt, navigation, perf tuning.
End-to-end mobile deployment: App Store Connect, Google Play, Expo EAS, OTA updates, CI/CD.
AWS serverless: Lambda, Dynamo DB,



S3, API Gateway, App Sync, SNS, Cloud Watch, CDK/Terraform.
Observability chops: Open Telemetry, Datadog, Honeycomb, etc.
Track record integrating auth (Clerk/Auth0), payments (Stripe), analytics SDKs.
Scale-first mindset—design for 10× traffic growth without rewrites.
Quality champion—strong code reviews, tests, docs.
Bonus Skills:
RAG / LLM pipeline experience, vector DBs.
React Native performance tuning (Hermes, Expo EAS).
Mobile CI/CD wizardry, automated testing.
SOC 2 Type II steering.
Real-time systems (Web Sockets, SSE, Graph QL subscriptions).

📌 Senior full-stack engineer (Xico)
🏢 Nir-yu
📍 Xico