Senior Software Engineer

As a Senior Software Engineer on the Integrations team, you'll design and build the systems that connect ZoomInfo's platform to the ecosystem of CRM, MAP, and external eco-systems that our customers depend on. You'll work on highly scalable backend services that power reliable, real-time data sync and API integrations across millions of records — enabling seamless connectivity between ZoomInfo and platforms like Salesforce, HubSpot, and Microsoft Dynamics 365.

You'll leverage technologies like Kafka, Confluent Cloud, Node.js/NestJS, and modern API and authentication standards to build resilient, observable, and fault-tolerant integration services. Your work will be foundational to how ZoomInfo's data reaches customers and connects with the tools at the center of their go-to-market stack.

Our engineering culture values diversity, intellectual curiosity, problem-solving, and openness. We encourage collaboration, big thinking, and calculated risk-taking in a blame-free environment. You'll have the autonomy to work on meaningful projects while receiving the support and mentorship needed to grow your career.

What You'll Do:

• Own the platform integrations layer end-to-end — building reliable connectivity, data ingestion/exports, and orchestration for complex, multi-step, long-running processes (including retries and state management)
• Build and maintain both inbound and outbound integrations with third-party platforms (e.g., Salesforce and other external/open APIs)
• Design and implement in-house services capable of processing large volumes of data under tight time constraints, optimizing for throughput and latency
• Design and maintain RESTful and webhook-based APIs, applying strong patterns for rate limiting, pagination, error handling, versioning, and backward compatibility
• Collaborate with product and platform teams to define integration requirements and execution guarantees (SLAs/SLOs)
• Build observability (logging, tracing, metrics) into integration systems, and use it to monitor, troubleshoot, and continuously improve production reliability
• Lead medium/large feature development independently within agile processes, mentoring engineers and conducting code reviews along the way
• Stay current with emerging technologies and evaluate new tools for potential adoption

What You Bring:

• 5+ years of software engineering experience with a focus on backend systems
• Strong experience with Node.js (NestJS), JavaScript, and TypeScript; Java (Spring Boot) is a plus
• Proven experience integrating with external/third-party APIs, building both inbound and outbound integrations (any platform — pattern/concept experience is transferable)
• Demonstrated experience building high-volume data services — e.g., optimizing data processing/ingestion time under real-world constraints
• Strong problem-solving and analytical skills, with the ability to debug complex technical issues and implement robust solutions
• Solid understanding of authentication and authorization protocols, including OAuth 2.0, OIDC, SAML, and JWT
• Proficiency with MongoDB and comfort working across relational and NoSQL data stores; familiarity with React a plus
• Strong communicator, comfortable leading cross-functional collaboration with both technical and non-technical stakeholders

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