The Principal, Systems Engineer owns and runs the enterprise-grade IP-to-DUNS mapping capability that underpins core customer deliverables and multiple downstream product lines. The Principal, Systems Engineer is accountable for reliable execution: operating and improving existing pipelines, maintaining mapping quality through internet churn, and ensuring secure, stable infrastructure. The Principal, Systems Engineer works closely with product, data science, and customer teams, provides task-level guidance to junior analysts supporting mapping validation and quality operations, and supports evaluation of third-party IP-to-business data sources from both technical and commercial perspectives. Skills Needed: • Experience deploying, operating, and securing data engineering workloads on Cloud Infrastructure platforms (AWS, Azure, or GCP (Google Cloud Platform) • Familiarity with infrastructure-as-code tools such as Terraform Needed. • Strong SQL expertise (preferably PostgreSQL), including complex querying, filtering, merging, and function development for large-scale data analysis. • Strong programming and automation skills using Python; experience with Go, Rust, or Bash is an advantage. • Hands-on experience deploying, operating, and securing bare-metal and VPS infrastructure with strong Linux fundamentals. • Deep working knowledge of ASNs, BGP, DNS, routing behavior, IP geolocation concepts, and global internet topology applied in real-world production environments. • 10+ years of experience in internet infrastructure, IP intelligence, network/systems engineering, or closely related technical disciplines. • Strong cross-layer troubleshooting skills across network, system, and data-processing layers, including coordination with junior engineers or analysts. • Ability to evaluate third-party IP intelligence and OSINT data sources using both technical signal quality and commercial considerations. • Show an ownership mindset in everything you do; be a problem solver, be curious and be inspired to take action, be proactive, seek ways to collaborate and connect with people and teams in support of driving success. • Continuous growth mindset, keep learning through social experiences and relationships with stakeholders, experts, colleagues and mentors as well as widen and broaden your competencies through structural courses and programs. • Where applicable, fluency in English and languages relevant to the working market. Responsibilities: • Write, review, and maintain data-processing and automation code (primarily Python, with Go, Rust, or Bash is a plus) following coding standards and operational best practices. • Implement and uphold operational security controls across infrastructure and pipelines, including secure configurations, least-privilege access, encryption, network segmentation, and audit logging. • Own the end-to-end technical execution of the IP-to-DUNS mapping lifecycle, including data ingestion, normalization, validation, enrichment, quality control, and delivery packaging. • Produce high-quality IP-to-business attribution by combining internet-layer signals (e.g., BGP/ASN changes, DNS patterns, hosting footprints, OSINT sources, routing shifts) and applying well-defined rules to resolve conflicting signals while maintaining mapping stability. • Define, apply, and enforce data-quality standards for internet-signal-based entity resolution to ensure stable, DUNS-aligned outputs for downstream consumers, including product pipelines and risk or fraud use cases. • Operate, monitor, and continuously improve automated pipelines that refresh IP attribution and entity resolution at scale, focusing on accuracy, latency, reliability, and recoverability. • Maintain systems that track IP block changes and infrastructure volatility (e.g., routing, BGP, ASN shifts, and related signals) to keep the IP-to-DUNS mapping asset current. • Deploy, operate, and tune internet-facing infrastructure across bare-metal and VPS environments, as well as data engineering workloads on Google Cloud Platform. • Design and operate testing frameworks, benchmarking, quality gates, and observability to evaluate third-party IP intelligence vendors, protect mapping integrity, and support incident response and troubleshooting. • Provide task-level leadership and subject-matter guidance to junior engineers and analysts, establishing clear workflows, documentation, prioritization, and contributing as a domain partner on related internet-domain efforts. • Additional duties as assigned. Education: • Bachelor's degree in Computer Science, Information Systems, Engineering or a related field is required and master's degree Preferred Benefits We Offer • Generous paid time off in your first year, increasing with tenure. • Up to 16 weeks 100% paid parental leave after one year of employment. • Paid sick time to care for yourself or family members. • Education assistance and extensive training resources. • Do Good Program: Paid volunteer days & donation matching. • Competitive 401k with company matching. • Health & wellness benefits, including discounted Wellhub membership rates. • Medical, dental & vision insurance for you, spouse/partner & dependents. All Dun & Bradstreet job postings can be found at https://jobs.lever.co/dnb. Official communication from Dun & Bradstreet will come from an email address ending in [redacted].com. Notice to Applicants: Please be advised that this job posting page is hosted and powered by Lever, a subsidiary of Employ Inc. Your use of this page is subject to Employ's Privacy Notice and Cookie Policy, which governs the processing of visitor data on this platform.