Marcela Stephanie Pereira Maris
London,United Kingdom
Summary
Organized and communicative professional with solid experience in project coordination and customer-facing roles. Resilient, adaptable, and highly skilled in teamwork, deadline management, and problem-solving. After relocating to London, I completed intensive Data Analytics courses (Meta and TripleTen), strengthening my competencies in Excel, data organization, and reporting. Currently seeking opportunities in customer service, reception, or administrative support where I can contribute with strong organizational, analytical, and interpersonal abilities.
Overview
21
21
years of professional experience
9
9
years of post-secondary education
Work history
Freelance Editor & Author
Publishers (Brazil)
São Paulo, Sao Paulo
2021.01 - Current
- Delivered editorial services for educational publishers, including critical reading, editing, and authorship of Mathematics textbooks.
- Authored Lower Secondary (Key Stage 3) Mathematics content, ensuring accuracy and curriculum alignment.
- Collaborated with editorial teams to improve content quality and digital product development.
- As a consultant, I manage deadlines and reporting systems to ensure high-quality project delivery.
Editorial Project Coordinator
SOMOS Educação (Publishing House)
São Paulo, Brazil
2014.01 - 2021.02
- Managed multidisciplinary teams (authors, editors, suppliers) in the development of Mathematics and Physics textbooks.
- Supervised theoretical accuracy and quality of materials, ensuring approval of dozens of textbooks in the Brazilian National Textbook Program (PNLD).
- Conducted market research and focus groups with teachers and students, translating insights into strategies for improving educational projects.
- Managed budgets, timelines, and reporting systems to ensure on-time delivery of high-quality projects.
Customer Service Assistant
Café & Pub
London
2021.08 - 2021.10
- Delivered customer service and operational support in a fast-paced, multicultural environment.
- Strengthened English communication skills while managing customer needs under pressure.
Text Editor
Grupo SM, Saraiva
São Paulo, Sao Paulo
2008.01 - 2013.01
- Edited and reviewed Mathematics and Physics educational materials (print & digital).
- Collaborated with renowned authors, ensuring clarity, accuracy, and adherence to publishing standards.
Teacher of mathematics in high school
COC Education System & USP OBMEP Program
2005.01 - 2014.12
- Taught Mathematics and Physics to middle and high school students.
- Delivered preparatory courses for the Brazilian Public School Mathematics Olympiad (OBMEP).
- Designed personalized learning strategies based on student performance data.
Education
Data Analytics - Data Analytics
TripleTen / Meta
2024.08 - 2025.08
MBA - Book Publishing
Casa Educação
São Paulo, Sao Paulo 2017.01 - 2018.12
Diploma of Higher Education - Mathematics
University of São Paulo (USP)
São Paulo, Sao Paulo 2007.01 - 2012.12
Skills
- Customer service and interpersonal communication
- Organization and project coordination
- Teamwork and stakeholder communication
- Problem-solving and process improvement
- Schedule and deadline management
- Employee management and staff performance development
- Administrative leadership
Technical Skills
- Programming & Data: Python (Pandas, Matplotlib, Seaborn, Plotly), SQL
- Visualization & BI: Tableau, Power BI, Streamlit, Dash
- Data Analytics: Data cleaning, exploratory data analysis, hypothesis testing, A/B testing
- Productivity: Excel (advanced), Google Sheets
Selected Data Analytics Projects
ENEM Dashboard – Education Data Analysis (2019)
🔗 dashboard-enem-tvu8.onrender.com
- Built an interactive web application using Streamlit to analyze results from Brazil’s national high school exam (ENEM).
- Developed visualizations (histograms, boxplots, scatter plots) to compare student performance by gender and age group.
- Technologies: Python, Pandas, Plotly, Streamlit.
Skills: Data visualization | Dashboarding | Statistical analysis
Customer Churn Prediction – Telecom (TripleTen)
- Analyzed telecom customer dataset to predict churn using SQL and Python.
- Applied descriptive statistics and hypothesis testing to identify churn factors.
- Produced report highlighting risk segments and retention strategies.
Skills: SQL | Python | Hypothesis testing | Reporting
Sales Dashboard – Retail Chain (TripleTen)
- Built interactive sales dashboard in Tableau, tracking performance by region and product.
- Performed data cleaning and exploratory analysis in Python.
- Delivered insights for product repositioning, simulating a +12% sales increase scenario.
Skills: Tableau | Python | Data cleaning | Dashboarding
LANGUAGES
Portuguese
Native
English
Upper intermediate
Timeline
Data Analytics - Data Analytics
TripleTen / Meta
2024.08 - 2025.08
Customer Service Assistant
Café & Pub
2021.08 - 2021.10
Freelance Editor & Author
Publishers (Brazil)
2021.01 - Current
MBA - Book Publishing
Casa Educação
2017.01 - 2018.12
Editorial Project Coordinator
SOMOS Educação (Publishing House)
2014.01 - 2021.02
Text Editor
Grupo SM, Saraiva
2008.01 - 2013.01
Diploma of Higher Education - Mathematics
University of São Paulo (USP)
2007.01 - 2012.12
Teacher of mathematics in high school
COC Education System & USP OBMEP Program
2005.01 - 2014.12