[Remote] Principal Software Engineer

Note: The job is a remote job and is open to candidates in USA. ZoomInfo is where careers accelerate, and they are seeking a Principal Engineer to join their Advertising, Company Intelligence, and Intent team. The role involves designing and implementing core systems for a real-time marketing platform, focusing on high-throughput ad infrastructure and intelligent systems enhanced by large language models.ResponsibilitiesDesign and build distributed systems that process, enrich, and respond to billions of behavioral events per day in real timeDevelop high-performance APIs and services that support advertising, identity, and intent features across the Marketing PlatformLeverage machine learning and large language models (LLMs) to analyze behavioral data, classify content, extract signals, and enable intelligent decision-makingBuild intelligent agents using frameworks like LangGraph or MCP to reason over data and power user-facing insightsDesign and operate data pipelines using tools like Kafka, Kinesis, and ClickHouse to support both streaming and batch workloadsDrive quality, performance, scalability, and observability across all systems you ownCollaborate cross-functionally with product managers, data scientists, and engineers to deliver customer-facing features and internal toolingContribute to technical leadership and mentorship of teammatesSkills8+ years of backend, data, or infrastructure engineering experience, or equivalent impact and leadershipStrong experience in at least one of the following: Distributed systems engineering (e.g., building low latency high and throughput APIs, scalable microservices, event processing pipelines), Big data infrastructure (e.g., streaming, warehousing, low-latency storage at scale), Applied AI/ML, including use of LLMs for extraction, classification, or reasoning tasksProficiency in one or more core languages: Java, Go, PythonSolid grasp of SQL and large-scale data modelingFamiliarity with databases and tools such as: ClickHouse, DynamoDB, Bigtable, Memcached, Kafka, Kinesis, Firehose, Airflow, SnowflakeComfortable using LLMs as part of your development workflow—whether via tools like Copilot, Cursor, ChatGPT, Claude, or others—to boost productivity, explore architecture ideas, and rapidly prototypeSkilled at designing and implementing LLM-powered systems such as RAG pipelines, agent frameworks (e.g., LangGraph), or intelligent workflows that reason across large datasets in real timeExperience in ad tech, real-time bidding (RTB), or programmatic systemsBackground in identity resolution, attribution, or behavioral analytics at scaleContributions to open source in ML, infrastructure, or data toolingStrong product instincts and a passion for building tools that drive meaningful outcomesBenefitsIn addition to comprehensive benefits we offer holistic mind, body and lifestyle programs designed for overall well-being.Additional compensation such as Bonus, Commission, Equity and other benefits may also apply.Company OverviewZoomInfo offers a platform for accessing business contact information, company profiles, and sales intelligence tools. It is a sub-organization of DiscoverOrg. It was founded in 2000, and is headquartered in Vancouver, Washington, USA, with a workforce of 1001-5000 employees. Its website is http://www.zoominfo.com.Company H1B SponsorshipZoomInfo has a track record of offering H1B sponsorships, with 5 in 2026, 74 in 2025, 67 in 2024, 51 in 2023, 115 in 2022, 81 in 2021, 10 in 2020. Please note that this does not guarantee sponsorship for this specific role.