Senior Backend Engineer — AI-Powered Real-Time Systems

ZoomInfo; San Francisco (CA); On-site; USD 164,000 - 257,000; Full time

Job summary

ZoomInfo is accelerating careers by building a Go-to-Market Intelligence platform powered by real-time data and AI-ready insights. We design distributed systems, scalable APIs, and intelligent workflows that analyze billions of events daily.

You will work with engineers, data scientists, and product teams to deliver customer-facing features while mentoring teammates and advancing system observability and performance.

Qualifications

• 8+ years of backend, data, or infrastructure engineering experience, or equivalent impact and leadership.
• Proficiency in Java, Go, or Python.
• Solid grasp of SQL and large-scale data modeling.
• Familiarity with ClickHouse, DynamoDB, Bigtable, Memcached, Kafka, Kinesis, Firehose, Airflow, Snowflake.
• Experience with AI/ML and LLM-based extraction, classification, or reasoning tasks.

Responsibilities

• Design and build distributed systems that process, enrich, and respond to billions of behavioral events per day in real time.
• Develop high-performance APIs and services supporting advertising, identity, and intent features.
• Leverage ML/LLMs to analyze data, classify content, extract signals, and enable intelligent decisions.
• Build intelligent agents using frameworks like LangGraph or MCP to power insights.
• Operate data pipelines with Kafka, Kinesis, and ClickHouse for streaming and batch workloads.
• Drive quality, performance, scalability, and observability across all owned systems.
• Collaborate cross-functionally with product managers, data scientists, and engineers to deliver features and tooling.
• Contribute to technical leadership and mentorship of teammates.

Skills

Backend engineering

Distributed systems

Java

Go

Python

SQL

Big data

AI/ML

Tools

ClickHouse

DynamoDB

Bigtable

Memcached

Kafka

Kinesis

Firehose

Airflow

Snowflake

Job description

ZoomInfo is accelerating careers by building a Go-to-Market Intelligence platform powered by real-time data and AI-ready insights. We design distributed systems, scalable APIs, and intelligent workflows that analyze billions of events daily.

You will work with engineers, data scientists, and product teams to deliver customer-facing features while mentoring teammates and advancing system observability and performance.