Principal Software Engineer - PA172

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Principal Software Engineer - PA172 in USA

ZoomInfo
Full time
Email

USA
08/25/2026
Report

Waltham, MA

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.
Use machine learning and LLMs to analyze behavioral data, classify content, extract signals, and support intelligent decisions.
Build intelligent agents and LLM-powered workflows using frameworks such as LangGraph and MCP.
Design and operate streaming and batch data pipelines with Kafka, Kinesis, and ClickHouse.
Drive quality, performance, scalability, and observability for owned systems.
Collaborate with product managers, data scientists, and engineers on customer-facing features and internal tooling.
Provide technical leadership and mentorship to teammates.

Requirements

At least 8 years of backend, data, or infrastructure engineering experience, or equivalent impact and leadership.
Strong experience in distributed systems engineering, big data infrastructure, or applied AI/ML involving LLMs.
Proficiency in one or more of Java, Go, and Python.
Strong SQL and large-scale data-modeling skills.
Familiarity with ClickHouse, DynamoDB, Bigtable, Memcached, Kafka, Kinesis, Firehose, Airflow, and Snowflake.
Experience designing LLM-powered systems such as RAG pipelines, agent frameworks, or intelligent workflows.
Comfort using LLM tools such as Copilot, Cursor, ChatGPT, or Claude in the development workflow.
Experience in ad tech, real-time bidding, programmatic systems, identity resolution, attribution, or behavioral analytics is a bonus.
Open-source contributions in ML, infrastructure, or data tooling are a bonus.

Benefits

Comprehensive benefits and holistic mind, body, and lifestyle programs are offered.
The position is listed as remote.
Additional bonus, commission, equity, and other benefits may apply.

Salary: $164k - $257k/yr

ZoomInfo

ZoomInfo (NASDAQ: GTM) is the go-to-market platform that helps businesses find, acquire and grow their customers. ZoomInfo delivers accurate, real-time data, insights, and technology to more than 35,000 companies worldwide. Businesses use our data and platform to increase efficiency, align sales ...

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