CareerPlan

Senior Software Engineer- User Behavior

San Mateo, CAFull-time$197k–$243k2026-11-06 → 2026-11-10
HybridNo visa sponsorship

Core

Build backend systems for a personalized, adaptive user safety system that shifts from reactive punishment to risk-based interventions for millions of users.

Role type

Senior IC backend engineer (safety & risk infrastructure)

Builds

Low-latency behavioral data layer, centralized rules-and-inference engine, unified intervention-delivery framework, and abuse reporting consolidation platform.

Domain

Internet platform / Trust & Safety / Risk Management

Deliverable

production ML models

Required skills

Go, distributed systems design, rules engine development, streaming/batch data pipelines, production operations, system design for auditability

Preferred skills

Trust & Safety domain experience, feature stores, ML-serving infrastructure, server-driven UI frameworks

Responsibilities

Design and operate low-latency per-user behavioral data layer; Build and evolve centralized decision engine combining rules with ML signals; Build unified backend framework for safety interventions; Consolidate abuse reporting channels with ML integration; Design serving infrastructure for explainability and fairness; Own end-to-end delivery from design to production operation.