Mainframe Operator



1,001-5,000 employees

Powering the future of the advertising ecosystem

Data & Analytics
AI & Machine Learning

Junior, Mid, Senior

London, UK

  • Experience with z/OS JES2 or JES3 operating systems and related operating programs
  • Problem-solving abilities
  • Knowledge of BMC AMIOPS and Control-M is an advantage
  • Knowledge of Jes3 DJC networking is an advantage
  • Operating z/OS JES3 operating system
  • Monitoring and maintaining required customer response at all times
  • Error detection and diagnosis of response time issues
  • Running daytime & nighttime production for EU & US systems
  • Highlighting and reporting on any failures, problem areas, and incidents
  • Maintaining and monitoring Ops ticket database
  • Investigating and diagnosing response time issues
  • Communicating with senior staff and on-call support staff during problem resolution

Mediaocean is the mission-critical platform for omnichannel advertising. With more than $200 billion in annualized media spend managed through its software, Mediaocean connects brands, agencies, media, technology, and data. Using AI and machine learning technology to control marketing investments and optimize business outcomes, Mediaocean powers campaigns from planning, buying, ad serving, and creative personalization to analysis, optimization, invoices, and payments. Mediaocean employs 1,700 staff across 30 global offices and supports over 100,000 people using its products. Visit www.mediaocean.com for more information.

Company Stage

Series B

Total Funding



New York, New York



Growth & Insights

6 month growth


1 year growth


2 year growth