Senior Client Success Manager (Hybrid)
Barcelona Full-time Senior Customer Success
At a glance
Senior Customer Success role at Smadex SLU. Barcelona · full-time.
Pay not stated
RoleCustomer Success
SenioritySenior
LocationBarcelona
EmploymentFull-time
PostedOct 7, 2026 · 2d ago
Role brief
growthroles summary, based on the employer's posting.
What you'll do
- Manage client relationships across Europe, keeping partnerships healthy while looking for ways to expand each account
- Track user acquisition campaign results and adjust performance against client KPIs, aiming to beat their targets
- Use campaign data to recommend business actions and explain complex findings in straightforward terms
- Present relevant product features, lead client reviews, and represent the mobile advertising solution externally
What you bring
- At least three years managing programmatic user acquisition campaigns tied to mobile advertising performance
- You communicate confidently in written and spoken English and can build lasting client relationships
- You understand cohort analysis, customer acquisition measures, and the mobile app ecosystem
Who this fits
This senior client-facing role suits someone analytical and proactive who can juggle priorities and solve problems. The role is hybrid in Barcelona, with three office days and two remote days each week. You must already have legal permission to work in Spain; visa sponsorship is unavailable.
From the employer
Smadex is a performance advertising engine for mobile apps, enabling the world's leading marketers to grow across Mobile and Connected TV (CTV). Powered by AI models trained on real campaign outcomes, Smadex delivers profitable growth at scale. Headquartered in Barcelona, with teams across the Americas, EMEA, and APAC, Smadex is a business unit of Entravision (NYSE: EVC) and one of the fastest-growing DSPs.
To help us maintain our strong position in the industry, we are looking for a Senior Client Success Manager to manage and develop a portfolio of clients across Europe.
Location: Barcelona (Hybrid - 3 days office / 2 days remote)
Your Mission
As a Senior Client Success Manager, you will be the first point of contact for your clients, with a primary focus on growing and strengthening these partnerships on a daily basis.
This includes monitoring the performance of our user acquisition campaigns, optimizing campaigns against clients' KPIs, and consistently striving to exceed them. You will also be responsible for identifying and driving key business development initiatives to grow your portfolio.
The ideal candidate is a strong team player with excellent analytical skills, a proactive mindset, and a strong problem-solving attitude.
Tasks & Responsibilities
Skills & Requirements
What Is In It For You
Please note that we do not provide visa sponsorship. Candidates must have the legal right to work in Spain to be considered for this position.
To help us maintain our strong position in the industry, we are looking for a Senior Client Success Manager to manage and develop a portfolio of clients across Europe.
Location: Barcelona (Hybrid - 3 days office / 2 days remote)
Your Mission
As a Senior Client Success Manager, you will be the first point of contact for your clients, with a primary focus on growing and strengthening these partnerships on a daily basis.
This includes monitoring the performance of our user acquisition campaigns, optimizing campaigns against clients' KPIs, and consistently striving to exceed them. You will also be responsible for identifying and driving key business development initiatives to grow your portfolio.
The ideal candidate is a strong team player with excellent analytical skills, a proactive mindset, and a strong problem-solving attitude.
Tasks & Responsibilities
- Build and manage strategic partnerships within your portfolio.
- Identify growth opportunities and execute strategies to achieve business goals.
- Enable decision-making through data-driven strategies and actionable insights.
- Translate complex data analysis into clear and simple language for effective communication.
- Introduce and promote new product features aligned with customers' business needs and stage of growth.
- Lead client meetings and regular business reviews.
- Represent Entravision and Smadex externally and promote our in-house mobile advertising solution.
Skills & Requirements
- 3+ years of experience in mobile advertising, managing performance-based user acquisition campaigns through programmatic channels is required.
- Excellent written and verbal communication skills in English, with the ability to build and maintain strong relationships with clients.
- Strong analytical skills, with a deep understanding of cohort analysis and customer acquisition metrics (ROAS, CPM, IPM, CPI, and CPA).
- Strong understanding of the mobile app industry, including key players, media buying, sellers, suppliers, and MMPs.
- Proactive, disciplined, and highly organized, with the ability to manage and prioritize multiple tasks simultaneously.
- Positive attitude, passion for apps, and a strong problem-solving mindset.
What Is In It For You
- Great compensation package.
- Top location at the heart of Barcelona in a penthouse office with a rooftop terrace, barbeque, and a fully stocked fridge.
- Work from home: 2 days/week.
- Private Health Insurance.
- Access to LinkedIn Learning.
- Meal vouchers - Tickets Restaurant monthly allowance.
- Monthly gym allowance: Choose between DiR Gym and Wellhub.
- Regular team-building events.
- Fun and friendly work environment with talented marketers and engineers from over 40+ countries.
- And more!
Please note that we do not provide visa sponsorship. Candidates must have the legal right to work in Spain to be considered for this position.
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