Backend Engineer -- Platform

Intempt.com is an agentic growth platform combining CDP, CRM, experimentation, personalization, recommendations, journeys, analytics, and AI agents in one event-centric platform. We're seeking a Backend Engineer to own critical systems including event pipelines, identity resolution, and data layer infrastructure. You'll work in a small, high-output team where you own systems, not just tickets.

• Build and maintain event pipeline with Kafka ingestion, Flink processing, and real-time event validation and deduplication
• Develop identity resolution systems for anonymous-to-known merging, cross-device stitching, account grouping, and attribute reconciliation
• Design and optimize data layers across Postgres, Redis, Neo4j, and ClickHouse for profiles, sessions, graphs, and analytics
• Build LLM infrastructure including prompt routing, model selection, token budgets, response caching, and failover mechanisms
• Develop and maintain public APIs for tracking, identify, consent, recommendations, and data management
• Debug edge cases in profile merging, experiment metrics, and data attribution
• Optimize database queries and system performance at scale (millions of events/day)
• Integrate third-party data sources like Shopify and HubSpot into unified profiles

• Java: Deep, production-level expertise including JVM tuning, GC behavior, concurrency, and data structures at 50k+ events/sec
• Postgres: Migrations, indexing, connection pooling, and replication experience
• Redis: Advanced knowledge beyond caching, including pub/sub and sorted sets
• Kafka: Topic design, consumer groups, backpressure, and exactly-once semantics
• Flink: Strong preferred; stateful processing, windowing, and checkpointing
• Data Systems: Working knowledge of ClickHouse or Neo4j (ideally both)
• LLM Integration: Production inference API experience with token limits, latency, retries, and cost control
• Backend Systems: 3-5 years building backend systems
• Problem Ownership: Root cause analysis, full deployment cycle, and monitoring capability
• Communication: Strong written and verbal English for design docs, PR descriptions, and postmortems

• Schedule: Full-time
• Work Environment: Work directly with founder and experienced backend engineers
• Autonomy: Context-driven, not micromanaged
• Team: Small, high-output team
• Opportunity: Shape a young codebase
• Hiring Process: 15-minute Founder Interview, 45-minute Engineering Interview (architecture reasoning, code/system walkthroughs, scaling and failure-mode thinking)
• Equal Opportunity: Equal opportunity employer with no discrimination based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability