Client Success Manager

Nexxen•New York, NY

1d•Hybrid

About The Position

Nexxen empowers advertisers, agencies, publishers and broadcasters around the world to utilize data and advanced TV in the ways that are most meaningful to them. Their flexible and unified technology stack comprises a demand-side platform (“DSP”) and supply-side platform (“SSP”), with the Nexxen Data Platform at its core. The Client Success Manager at Nexxen owns two core functions: managed service campaign management and programmatic PMP deal execution. As the primary point of contact for a portfolio of advertiser relationships, this role drives satisfaction, retention, and growth through expert campaign management, strategic consulting, and deep technical fluency across Nexxen's full product suite, including their SSP, DMP, and deal infrastructure. This role goes beyond day-to-day execution, requiring strategic thinking across the book of business, consulting on new solutions, participating in the RFP process, and generating upsell revenue through best-in-class reporting and measurable results. The Client Success Manager will partner closely with Strategic Sales, Ad Operations, and Supply teams to ensure every campaign and deal is set up for success from kick-off through optimization.

Requirements

2+ years in a client-facing account management or operations role within a DSP, SSP, media agency, or publisher
Proven track record managing programmatic campaigns across CTV, online video, and/or display
Experience with PMP deal management, SSP platforms, and programmatic deal troubleshooting
Strong analytical mindset with the ability to translate data into actionable narratives
Excellent communication skills, able to explain technical concepts clearly to both clients and internal teams
Highly organized with proven ability to manage competing priorities in a fast-paced environment
Proficiency in Excel (pivot tables, large datasets) and PowerPoint
Familiarity with Salesforce, ad servers, brand safety, and verification platforms

Responsibilities

Serve as the primary post-sale contact for a portfolio of managed service and programmatic advertiser accounts, building deep, trust-based relationships that drive retention and growth
Diagnose client needs and develop tailored strategies that generate measurable results and incremental revenue for Nexxen
Onboard new clients through platform demos, training sessions, and ongoing education on Nexxen's offerings and deal capabilities
Support quarterly regional growth goals through proactive upsell and cross-sell activity grounded in data and performance insights
Own end-to-end campaign delivery across managed service and PMP channels; including setup, launch, pacing, optimization, and performance reporting against KPIs
Manage the full PMP deal lifecycle: deal setup, targeting configuration, implementation best practices, QA, and ongoing troubleshooting
Execute multi-channel programmatic campaigns across CTV, online video, and display with a focus on precision and performance
Support audience activation and targeting strategies through Nexxen's Data Management Platform (DMP)
Maintain accurate campaign records and account documentation in Salesforce and internal systems
Act as a trusted advisor on Nexxen's DSP/SSP offerings — translating complexity into clear, actionable guidance for clients
Leverage performance data, market trends, and Nexxen's full product suite to develop proactive campaign recommendations and identify upsell opportunities
Collaborate cross-functionally to troubleshoot campaign and deal performance, surfacing creative solutions that meet evolving client needs