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Comcast Advertising Logo Comcast Advertising · IT - Software Development

Principal Software Engineer - Ad Tech & Distributed Systems - FreeWheel

United States, Chicago Employment contract 152828.79 - 229243.19 USD / Year · Job Posted June 30, 2026
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Job Description

The Principal Software Engineer - Ad Tech & Distributed Systems is responsible for leading reliability, performance, and operational excellence of the FreeWheel platforms. This role focuses on designing, operating, and troubleshooting large-scale distributed systems while owning monitoring, incident response, change management, and capacity planning. As a technical subject matter expert, the Principal Software Engineer leads and resolves complex issues, automates operational workflows, and partners with engineering, vendors, and client services to deliver scalable, high-quality solutions. The role operates with limited supervision, applying sound judgment and independently developing solutions for non-routine and complex challenges.

Job Responsibility

  • Own production reliability, availability, latency, and performance of large-scale, mission-critical systems
  • Design, implement, and operate monitoring, alerting, and observability solutions to ensure system health and rapid detection of issues
  • Lead incident response, root cause analysis, and post-incident reviews to drive long-term reliability improvements
  • Support and ensure stable operations during high-visibility, time-sensitive live events and releases
  • Drive automation initiatives to reduce operational toil, improve efficiency, and increase system resilience
  • Partner with software engineering teams to influence architecture and design decisions with production readiness in mind
  • Lead and execute change management, capacity planning, and production readiness reviews
  • Champion security, vulnerability management, and secure configuration practices across production environments
  • Enforce and continuously improve Engineering Operations processes, standards, and best practices
  • Participate in on-call rotations, including weekend coverage, and provide escalation support for complex production issues

Requirements

  • 10+ years of professional experience in software development/engineering
  • 5+ years experience with AWS
  • Expert-level coding, debugging, and troubleshooting skills across complex, distributed production systems
  • Proven ability to lead and mentor engineers in automation, reliability engineering, and production problem-solving
  • Strong experience designing and operating server-side applications or services using Python, Go-Lang, or Scala
  • Experience developing, operating, and troubleshooting distributed systems and backend services
  • Familiarity with data processing platforms, data pipelines, and large-scale system architectures
  • Deep knowledge of Linux systems, system internals, networking, and production infrastructure
  • Extensive experience with AWS cloud architecture and services including VPC, subnets, NACLs, security groups, EC2, S3, IAM, Route 53, Lambda, and related services
  • Proficiency with infrastructure-as-code and configuration management tools and practices
  • Mastery of CI/CD and SDLC tools (Docker, Kubernetes, Jenkins, Git, Ansible, Chef, and Puppet)
  • Strong understanding of database technologies, SQL, performance tuning, and operational data management
  • Advanced analytical and data-driven problem-solving skills, including use of metrics to guide decisions
  • Strong communication skills, attention to detail, adaptability, and ability to work effectively within a global, cross-functional team
  • Bachelor's Degree

Nice to have

  • C++ Programming Language
  • AWS OpsWorks
  • Python (Programming Language)
  • Systems Design

What we offer

  • Paid Time off
  • Physical Wellbeing
  • Financial Wellbeing
  • Emotional Wellbeing
  • Life Events and Family Support
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