Lisandra Guerreiro
Lisandra Guerreiro

Customer Success Leader

Open to offers · Member since 14 Aug 2026
Location
Braga, Portugal
Desired salary
Unspecified
Work preference
Remote Only
Experience level
Lead

About

Professional summary

I am a Customer Success and Customer Support leader with more than 10 years of customer-facing experience across B2B and B2C environments. I specialize in building scalable support and success operations that improve customer experience, retention, adoption, and long-term growth.

I have led Customer Success and Support teams through hiring, onboarding, coaching, performance management, career development, and operational planning. I balance service quality with business outcomes by monitoring SLA compliance, First Response Time, Time to Resolution, CSAT, backlog, churn, and Net Revenue Retention.

I am experienced in managing strategic B2B customer relationships, including success planning, QBRs, product demonstrations, customer training, and complex escalations. I work closely with Product, Engineering, Operations, Partnerships, Marketing, and Warehouse teams to resolve friction and improve the end-to-end customer journey.

I focus on creating efficient processes across onboarding, adoption, retention, and expansion. My work includes improving workflows, support documentation, knowledge bases, self-service resources, and internal knowledge-sharing practices.

I use operational data, recurring issue analysis, and Voice of Customer feedback to identify opportunities for service, process, and product improvements. I bring a customer-centric, structured, and collaborative approach to improving both customer outcomes and team performance.

Skills

35 capabilities

Tech stack & tools

Working toolkit

Collaboration

Communications

Experience

Career history

Head of Customer Success Leadzai, SA

Led and coached Customer Success and Support teams in a remote B2B AdTech environment. Managed hiring, onboarding, training, one-to-ones, feedback, performance management, and career development.

Owned Customer Success and Support operations, tracking SLA compliance, FRT, TTR, CSAT, ticket backlog, churn, and NRR. Developed success plans, QBRs, training, and product demonstrations for strategic B2B partners.

Served as the senior escalation point, coordinating with Product, Engineering, Operations, and Partnerships. Improved lifecycle processes across onboarding, adoption, retention, and expansion, while creating the Zendesk Help Center, internal documentation, and scalable self-service resources.

Analyzed operational trends, recurring issues, and Voice of Customer feedback to drive improvements in processes, documentation, product experience, retention, and customer outcomes.

Customer Success Manager Barkyn

Managed a D2C e-commerce customer portfolio across onboarding, engagement, retention, renewal, and long-term value.

Identified customer needs, product friction points, and churn risks, collaborating with Product, Warehouse, and Marketing teams to improve the customer journey.

Improved support documentation, workflows, and knowledge-sharing processes to create more scalable support operations, reduce response times, and decrease operational dependency.

Senior Customer Support Specialist Manpower Group Solutions, Lda

Provided high-volume remote customer support for the UK B2C market, primarily through phone channels, addressing technical, account, and service-related issues.

Troubleshot complex cases, maintained accurate case documentation, managed escalations, and coordinated with specialist teams to achieve timely resolution.

Built customer trust through clear communication, ownership, structured problem solving, and customer relationship management.

Customer Support Specialist & Sales Assistant Randstad Portugal

Delivered B2C customer support and retail sales services for Vodafone Portugal, from needs discovery and product recommendations through purchase and after-sales support.

Managed renewals, upselling, cross-selling, retention activities, and commercial support while maintaining service quality and a positive customer experience.

Handled formal customer complaints by balancing customer needs, commercial objectives, and service standards.

Education

Learning history

Azores University (UAC)

Degree, Psychology

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