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Guilherme Martinelli

@guilhermemartinelli

Account Manager and Customer Success Manager at Vivare Nutrimentos, growing ARR 40% in 2025 while maintaining 96% customer retention.

Germany

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What I'm looking for

I’m seeking a remote role in Customer Success, Account Management or Renewals with an international SaaS or technology company. Based in Germany, I’m fluent in English, Spanish and Portuguese. I enjoy helping customers succeed, building lasting relationships and driving growth in a team that values ownership and collaboration.

At Vivare Nutrimentos, I exceeded ARR targets by 21% in 2024 and 40% in 2025 across a corporate portfolio of 30+ accounts. I maintained 96% customer retention through proactive account health monitoring and structured retention playbooks.

I redesigned the onboarding journey and introduced a repeatable Customer Success framework, increasing CSAT from 3.0 to 5.0. I also identified expansion opportunities across 60% of the portfolio by partnering with C-level stakeholders.

At Turnitin, I increased retention of high-value SaaS contracts by 30% and delivered 109% of FY21 and 137% of H1 FY22 commercial targets. I also grew a strategic university account from 6,000 to 25,000 licensed student FTEs, reaching 2.5 times its original ARR.

Experience

Work history, roles, and key accomplishments

Current

Account Manager & Customer Success Manager

Current

Vivare Nutrimentos

Jun 2022 - Present (4 years 4 months)

Exceeded annual ARR targets by 21% in 2024 and 40% in 2025 across a 30+ account corporate portfolio. Achieved 96% customer retention and increased CSAT from 3.0 to 5.0 by redesigning onboarding and introducing a Customer Success framework.

Account Planning Renewal Management Upselling Cross Selling Customer Success CSAT AI Tools ChatGpt Copilot Gemini Claude

Customer Success Manager, LATAM

Turnitin

Apr 2021 - May 2022 (1 year 1 month)

Increased retention of high-value SaaS contracts by 30% by implementing structured onboarding, QBRs, and churn-prevention strategies. Delivered 109% of FY21 and 137% of H1 FY22 commercial targets.

Customer Success Onboarding QBR Churn Prevention Upselling Cross Selling Stakeholder Management Salesforce

Supplier Relationship & Service Delivery Manager

Globalinternet

Jan 2020 - Apr 2021 (1 year 3 months)

Achieved 100% of project KPIs while managing complex service delivery programs for multinational Enterprise accounts. Reduced critical-incident resolution time by 35% and led network implementations across 12 countries.

Service Delivery Vendor Management Escalation Management Project Management Network Implementations

Inside Sales & Business Development

Vivare Nutrimentos

Sep 2017 - Dec 2019 (2 years 3 months)

Exceeded revenue targets by 20%+ through consultative B2B selling and structured pipeline management. Increased lead-to-opportunity conversion by 35% and grew the active account base by 39%.

Inside Sales Business Development Pipeline Management Lead Qualification Consultative Selling

Business Consultant

GMartinelli Consulting

Jul 2015 - Aug 2017 (2 years 1 month)

Advised 30+ SME clients on growth strategy, go-to-market execution, and customer-centric operating models. Reduced sales cycles by 25% and increased proposal conversion by 18%.

Consulting Growth Strategy Go To Market Customer Journey Operational Playbooks

Account Manager & Business Development

Blackboard

May 2013 - Jun 2015 (2 years 1 month)

Managed a portfolio of 27 strategic Enterprise education accounts, supporting adoption, renewals, and growth. Achieved 90% platform adoption and exceeded quota in every reported period.

Account Management Business Development QBR Stakeholder Management Solution Selling MEDDIC SaaS LMS