Senior Distributed Systems Engineer Jobs in Ashburn, VA

FreeWheel, a Comcast company, provides comprehensive ad platforms for publishers, advertisers, and media buyers. Powered by premium video content, robust data, and advanced technology, we’re making it easier for buyers and sellers to transact across all screens, data types, and sales channels. As a global company, we have offices in nine countries and can insert advertisements around the world.

The Sr Software Engineer – Ad Tech & Distributed Systems is responsible for the availability, latency, performance, efficiency, change management, monitoring, emergency response, and capacity planning for FreeWheel platforms, primarily focusing on the Streaming Hub application. The role supports and enhances an inventory and targeting system, owns Data components within the Streaming Hub, and plays a key role in supporting customer‑facing issues, understanding client interactions, and improving the overall user experience.

• Provide Tier‑2 support for the Streaming Hub application, including troubleshooting customer issues related to inventory registration, targeting, and Data functionality.
• Own and contribute to the development and maintenance of Data components within the Streaming Hub platform.
• Develop a strong understanding of business logic, system architecture, and customer workflows to effectively diagnose and resolve issues.
• Serve as a subject‑matter expert for customer usage patterns, identifying gaps and driving improvements to usability and performance.
• Build automation tools and scripts to improve troubleshooting, reduce manual effort, and increase operational efficiency.
• Collaborate with project stakeholders to identify product and technical requirements and determine integration needs.
• Debug, analyze, and optimize code across distributed systems to resolve complex technical challenges.
• Partner with engineering, vendors, and client services to deliver scalable and reliable technical solutions.
• Support critical operations and live events, ensuring minimal disruption and rapid incident response.
• Improve customer satisfaction by reducing issue resolution time and enhancing platform reliability.
• Contribute to process improvements and operational best practices across engineering and support workflows.
• Participate in release cycles, including planning, testing, monitoring, and post‑release validation.

• 6–8 years of professional experience in software development/engineering.
• Proven track record of designing, building, and maintaining scalable applications.
• Strong coding, debugging, and troubleshooting skills in Scala, Python, and/or Go (Golang).
• Experience developing, operating, and troubleshooting distributed systems and backend services.
• Familiarity with data processing platforms, data pipelines, and large‑scale system architectures.
• Proficiency in SQL and database design.
• Experience supporting applications in cloud environments (AWS or OCI), including hands‑on experience with AWS services such as VPC, EC2, S3, IAM, Route 53, and Lambda.
• Experience with automation, monitoring, and observability tools.
• Familiarity with CI/CD and SDLC tools (Docker, Kubernetes, Jenkins, Git, Ansible).
• Strong Linux, networking, and infrastructure fundamentals.
• Working knowledge of cybersecurity best practices, including secure configurations and incident response.
• Bachelor’s Degree (preferred).

• Strong customer‑first mindset with the ability to translate technical issues into business impact.
• Ability to quickly learn business context and system behavior to improve issue resolution.
• Analytical thinker with a focus on continuous improvement and efficiency gains.
• Effective communicator, especially in client‑facing situations.
• Detail‑oriented and able to work independently in a fast‑paced, global environment.
• Collaborative team player with cross‑functional engagement across engineering and support teams.
• Willingness to participate in on‑call rotations, including weekends.

This information has been designed to indicate the general nature and level of work performed by employees in this role. It is not designed to contain or be interpreted as a comprehensive inventory of all duties, responsibilities and qualifications.

Comcast is an EOE/Veterans/Disabled/LGBT employer. We will consider all qualified applicants for employment without regard to race, color, religion, age, sex, sexual orientation, gender identity, national origin, disability, veteran status, genetic information, or any other basis protected by applicable law.

• C++ Programming Language
• Collaboration
• Debugging
• Python (Programming Language)