Sebastian Fonseca Martinez
Clearwater
Summary
Performance Marketing and Brand Management professional with experience leading Amazon Ads, Meta Ads, and full-funnel growth strategies across e-commerce and high-ticket businesses. Built and managed AI-driven sales automation systems focused on lead generation, appointment booking, and operational efficiency. Strong analytical background in campaign optimization, revenue growth, and scalable business operations.
Overview
6
6
years of professional experience
Work History
Brand Manager | Performance Marketing Manager
Nexxus Capital
Clearwater, FL
01.2025 - 11.2025
- Managed end-to-end brand strategy for 2 Amazon-based brands generating 7-figure annual revenue each
- Led full-funnel performance marketing across Amazon Ads, Sponsored Products, Sponsored Brands, and Display campaigns
- Optimized product listings, A+ content, landing pages, images, copywriting, and conversion strategy to improve ranking and sales performance
- Directed pricing strategy, positioning, brand storytelling, and competitive market analysis to maximize profitability
- Coordinated inventory planning, ad spend allocation, and cross-functional execution across operations, logistics, and finance
Founder
Ledestiny
London
08.2022 - 08.2025
- Built and managed a dropshipping e-commerce business focused on paid media, customer acquisition, and operational execution
- Planned and optimized Meta Ads campaigns across Facebook and Instagram to test products, improve conversions, and maximize ROAS
- Managed supplier coordination, product positioning, landing page optimization, and fulfillment operations
- Applied performance analysis and strategic decision-making across pricing, customer journey, and business scalability
Founder & CEO
Karvin
Clearwater, FL
03.2026 - Current
- Built an AI-driven SaaS platform for high-ticket businesses focused on lead response automation, appointment booking, and sales operations
- Designed automated workflows for WhatsApp and Instagram lead qualification, follow-up sequences, and CRM pipeline management
- Developed outbound acquisition systems using Google Maps scraping, AI personalization, and automated prospecting workflows across multiple industries
- Led product development, system architecture, and operational strategy for inbound and outbound sales automation processes
Foreign Exchange Trader
Foreign Exchange Market
02.2023 - Current
- Managed trading operations in the global foreign exchange market with a strong focus on market analysis, strategic execution, and risk control
- Evaluated macroeconomic news, technical indicators, and market behavior to identify profitable trading opportunities
- Developed disciplined decision-making processes under high-pressure environments with strict performance and capital management
- Applied data-driven analysis and continuous optimization to improve trading consistency and long-term profitability
Commercial Partner
Gano Excel
Kuala Lumpur
06.2020 - 10.2022
- Led brand positioning and market expansion across the Americas for the company’s flagship healthy coffee products
- Generated approximately $150,000 in revenue growth through sales strategy, market development, and team leadership
- Built and managed high-performing teams across multiple countries with leadership responsibility over 500+ people
- Delivered leadership training, sales development, and business growth strategy across regional operations
Customer Service
Concentrix
Bogotá
10.2022 - 03.2023
- Constant fulfillment of daily objectives proposed by the company.
- Processing of documentation and health database.
- Training and supervision of new hires.
- Efficient and prompt handling of complaints and claims.
New York Times, Intouch
Bogota
09.2023 - 11.2021
- Constant fulfillment of daily objectives proposed by the company as well.
- Managing inquires of the New York Times paper's clients.
- Taking care of the billing part for the clients that called the NYT.
- Efficient and prompt handling of complaints and claims.
Education
High School Diploma -
San Carlos School
Colombia06-2021
Hospitality Managment
Vatel
11-2021
High School Diploma - Financial Markets
Yale University
04-2022
High School Diploma - Prompt Engineering AI
Vandebilt University
01-2022
Amazon FBA - Amazon FBA
Smattbeemo
09-2023
Digital Marketing -
Smattbeemo
05-2023
Skills
- Performance Marketing (Amazon Ads, Meta Ads, PPC, CRO, ROAS Optimization)
Brand Management & Product Positioning
Lead Generation & Sales Funnel Optimization
Google Analytics, KPI Reporting & Data Analysis
CRM Systems & Sales Automation
Process Optimization & Operational Strategy
AI-Driven Workflow Automation
Cross-Functional Team Leadership
Accomplishments
• Managed 2 Amazon-based brands generating 7-figure annual revenue each through full-funnel brand strategy and performance marketing
• Generated approximately $150,000 in revenue growth through market expansion and brand positioning across the Americas at Gano Excel
• Built and launched an AI-driven sales automation platform focused on lead generation, appointment booking, and high-ticket client acquisition
• Led Meta Ads and dropshipping operations with full ownership of paid media, customer acquisition, and conversion optimization
• Trained and led teams of 100+ people across leadership development, sales performance, and operational execution
Languages
Spanish
Native or Bilingual
English
Native or Bilingual
French
Elementary
Timeline
Founder & CEO
Karvin
03.2026 - Current
Brand Manager | Performance Marketing Manager
Nexxus Capital
01.2025 - 11.2025
New York Times, Intouch
09.2023 - 11.2021
Foreign Exchange Trader
Foreign Exchange Market
02.2023 - Current
Customer Service
Concentrix
10.2022 - 03.2023
Founder
Ledestiny
08.2022 - 08.2025
Commercial Partner
Gano Excel
06.2020 - 10.2022
Hospitality Managment
Vatel
High School Diploma -
San Carlos School
High School Diploma - Financial Markets
Yale University
High School Diploma - Prompt Engineering AI
Vandebilt University
Amazon FBA - Amazon FBA
Smattbeemo
Digital Marketing -
Smattbeemo
Courses
- Overcoming Ups & Downs in Life Course - Mission of Belleair
- Naval Cadet, Cadet School Almirante Padilla of the National Navy