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Senior Software Engineer

NielsenIQ

Salary not specified
Nov 4, 2025
Chicago, IL, US
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NIQ is seeking to solve the problem of delivering scalable, high-performance solutions within their Phoenix system, leveraging a modern tech stack to drive operational excellence and influence architecture, optimize data workflows.

Requirements

  • Advanced proficiency in SQL, Python, and PySpark for data processing and application development.
  • Demonstrated expertise in PostgreSQL, including query optimization, indexing, partitioning, and performance tuning.
  • Strong understanding of RESTful APIs, microservices architecture, and scalable system design.
  • Familiarity with CI/CD pipelines, version control (Git), and DevOps practices.
  • Familiarity with cloud platforms (Azure, AWS, or GCP).
  • Knowledge of testing frameworks and best practices for unit and integration testing.
  • Exposure to Agile/Scrum methodologies.

Responsibilities

  • Architect, develop, and maintain robust backend systems for high-volume data processing.
  • Lead the design and optimization of relational and non-relational databases, with a focus on PostgreSQL.
  • Ensure reliability, scalability, and performance of production data pipelines and backend services.
  • Provide hands-on production support, including monitoring, troubleshooting, and resolving issues in time-sensitive, client delivery.
  • Collaborate cross-functionally with Product, QA, Operations, and Design teams to deliver high-impact solutions aligned with business objectives.
  • Apply deep understanding of complex business logic to enhance system capabilities and data workflows.
  • Champion best practices in code quality, performance tuning, and maintainability.

Other

  • Bachelor's degree in Computer Science, Engineering or related field.
  • 7+ years of professional experience in software engineering, with a focus on backend and data systems.
  • Excellent analytical, problem-solving, and communication skills.
  • Proven ability to lead initiatives, mentor peers, and adapt to evolving technical landscapes.
  • Flexible working environment, volunteer time off, LinkedIn Learning, and Employee Assistance Program (EAP)