Staff Backend Engineer - Trust & Control Safety Systems

📋 Description

• Redesign and optimize data models, queries, and indexing strategies across MongoDB, Firestore, and
• Own ElasticSearch reliability — ingestion, indexing, shard strategy, and query performance for
• Eliminate bottlenecks, improve replication health, and enforce predictable query and index latency
• Define data flow and integration boundaries between storage, cache, and APIs with clear contracts
• Build visibility into every data path — metrics, traces, slow query logs, replication lag, and
• Make testing non-negotiable — enforce unit, integration, and load testing standards across all

🎯 Requirements

• 8+ years of experience building high-scale, mission-critical backend systems where p99 regressions
• Deep expertise in concurrency, event-driven architectures, and consistency primitives (CAS, atomic
• Experience with systems where code correctness has direct financial impact—metering, ledgers, or
• A track record of technical leadership through influence, driving architecture for multi-team
• Experience with systems where correctness has financial consequences — metering, ledgers, billing
• Strong experience with relational and NoSQL data models (especially with complex transactional