Arthur Barbosa Mello Data Scientist / AI Engineer

Data Scientist / AI Engineer

Sephora

Jan 2024 - Current (2 years 5 months)

Senior Data Scientist

freelance

Jan 2024 - Current (2 years 5 months)

- Developed a product search engine on Vertex AI, using LLMs, RAG, prompt engineering and chaining techniques - Developed many POCs with LLMs. Ex.: an image-based skincare recommendation engine and a text-to-SQL chatbot

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Senior Data Scientist

Jan 2024 - Current (2 years 5 months)

- Developed a product search engine on Vertex AI, using LLMs, RAG, prompt engineering and chaining techniques - Developed many POCs with LLMs. Ex.: an image-based skincare recommendation engine and a text-to-SQL chatbot

Senior Data Scientist

Capgemini Invent

Feb 2023 - Dec 2023 (11 months)

• Developed multiple Generative AI demonstrators and POCs using GCP for text and image generation • Developed a classification and entity extraction tool in Python for process automation, using LLMs • Built a P&L of the digital activities of a beauty player, making suggestions on how to streamline them across regions

Lecturer

Toulouse School of Economics

Jan 2022 - Dec 2022 (1 year)

Scoring for Marketing course for 2nd year Master's students

Tutor

OpenClassrooms

Jan 2021 - Dec 2022 (2 years)

Tutoring for Data Science / Data Analysis students

Data Analyst

Kering

Jan 2021 - Dec 2021 (1 year)

Data Scientist

Monoprix

Sep 2019 - Dec 2020 (1 year 4 months)

Data Scientist / Manager

AVISIA

Apr 2019 - Jan 2023 (3 years 10 months)

• Developed a revenue forecasting model that reduced baseline error by 10%, using a seasonality clustering method • Increased utilization rate of discount coupons by 30%, using an allocation algorithm to estimate the likelihood that each user will use each coupon • Developed a WebApp allowing CRM to launch monthly allocations for discount coupons, giving them autonomy and saving time for the Data Science team. • Analysed data to understand segments of customers and measure the performance of marketing campaigns • Managed team of consultants, making sure their projects run smoothly, that they are happy with the company and that they achieve their goals and learn constantly • Created dashboards to follow NPS drivers, customer journeys and cam

Data Science Consultant / Manager

AVISIA

Apr 2019 - Jan 2023 (3 years 10 months)

• Developed a revenue forecasting model that reduced baseline error by 10%, using a seasonality clustering method • Increased utilization rate of discount coupons by 30%, using an allocation algorithm to estimate the likelihood that each user will use each coupon • Developed a WebApp allowing CRM to launch monthly allocations for discount coupons, giving them autonomy and saving time for the Data Science team. • Analysed data to understand segments of customers and measure the performance of marketing campaigns • Managed team of consultants, making sure their projects run smoothly, that they are happy with the company and that they achieve their goals and learn constantly • Created dashboards to follow NPS drivers, customer journeys and cam

Data Scientist

PMU

Apr 2019 - Aug 2019 (5 months)

Data Analyst

Selency

Feb 2018 - Apr 2019 (1 year 3 months)

• Implemented the new Data Warehouse on PostgreSQL for displaying KPIs on Google Data Studio; • Automated reports and dashboards using Python and Google Sheets; • Analysed data from different sources to identify trends and opportunities

Procurement Analyst

Light

Dec 2016 - Jul 2017 (8 months)

• Worked on changing the Light Recicla program business model and contractor (company’s recycling program that allows clients to exchange their waste for bonus in the energy bill); • Worked on changing the reverse logistics business model and contractor, avoiding financial losses and optimising the supply chain.

Procurement Analyst

Rio Olympic and Paralympic Games Organising Committee

Aug 2013 - Nov 2016 (3 years 4 months)

• Developed cost breakdown model for the Temporary Power contract (one of the most critical for the Games), and worked on its control and due diligence until after the Games; • Achieved $ 3 million in savings from a total of $ 20 million in spending, through optimisations and negotiations; • Managed Procurement projects from start to end, including the coordination of all involved parties, development of purchasing strategies, negotiation with suppliers, contract drafting and final report elaboration; • Managed contracts, including suppliers payments, deliverables, SLAs, and the dissolution after the Games.

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Project Consultant

Opção Consultoria Jr

Jul 2012 - Dec 2012 (6 months)

• Collected the main info needed by entrepreneurs to develop their Business Plans, such as revenue and costs forecasts; • Developed ROI analytical spreadsheets to evaluate the possible financial returns for their businesses; • Developed the new R&D area, to make sure the company is always up to date with the market needs.

Microeconomics Teaching Assistant

Universidade Federal Fluminense

Apr 2012 - Dec 2012 (9 months)

• Helped students with their questions in Microeconomics • Assisted the lecturers with classroom activities, and gave lectures myself, to help students understand Microeconomics.

Arthur Barbosa Mello

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