Senior Software Engineer (Java Developer)

NIQ is the world’s leading consumer intelligence company, delivering the most complete understanding of consumer buying behavior and revealing new pathways to growth. In 2023, NIQ combined with GfK, bringing together the two industry leaders with unparalleled global reach. With a holistic retail read and the most comprehensive consumer insights—delivered with advanced analytics through state-of-the-art platforms—NIQ delivers the Full View™.  NIQ, is an Advent International portfolio company with operations in 100+ markets, covering more than 90% of the world’s population. For more information, visit NIQ.com.   Slice (NielsenIQ) is seeking an experienced Senior Software Engineer to join our Core Engineering team. You will work on Java-based public web services and contribute to the evolution of our high-volume, distributed infrastructure that powers data extraction, classification, and low-latency delivery to consumer and partner applications. Our team focuses on scalability, resilience, architectural excellence, and building systems that operate reliably at massive scale. As a senior engineer, you will help design, optimize, and extend mission-critical components that drive Slice’s core platform.Roles and Responsibilities Serve as a recognized expert in software design, architecture, and performance optimization across the domain.Lead end-to-end design and implementation of critical, high-impact systems with a focus on long-term scalability and maintainability.Define, document, and enforce system-wide design patterns, coding standards, and architectural principles.Architect and integrate scalable, event-driven, and resilient distributed systems for high-volume, low-latency workloads.Solve complex challenges in high-availability and fault-tolerant architectures, driving improvements in reliability and throughput.Design and evolve API contracts with backward compatibility, extensibility, and cross-service interoperability.Define and implement observability and telemetry strategies to ensure deep insight into system behavior and performance.Apply polyglot persistence principles by choosing optimal data storage technologies for varied use cases. Work with cloud-based architectures and infrastructure-as-code tools (e.g., Terraform, Pulumi) to improve deployment reliability and efficiency.Establish scalable automated testing frameworks and quality gates used across multiple engineering teams.  Drive DevOps excellence by improving automation, strengthening security, and advancing operational best practices.Conduct deep design and code reviews, ensuring alignment with engineering excellence standards. Collaborate with product and engineering teams to resolve architectural dependencies and align system roadmaps.Evaluate and introduce new technologies, frameworks, and patterns to enhance engineering efficiency and platform performance.Incorporate AI-assisted analysis to explore architectural alternatives and impro...