Leon B.
Back-end and Systems Engineer

Skills

Python

Postgresql

Mysql

Mongodb

Amazon Aws

Google Cloud

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Bio

Data Backend Developer with a specialization in Python, Data Analysis, Data Mining, Machine Learning (ML), Cloud Services, relational databases (RDB), and non-relational databases (Non-RDB). Expertise encompasses process organization and Lean methodologies, incorporating a variety of technologies and tools. Proficient in ETL processes, business intelligence platforms such as Power BI, Tableau, and Metabase, cloud infrastructures including AWS and GCP, and containerization with Docker. Utilizes Domain-Driven Design (DDD) and manages relational databases with MYSQL/PostgreSQL along with non-relational database solutions using MongoDB. Dedicated to continuous professional and personal development through exploration of new technologies, focused study, and staying informed on industry trends. Maintains physical wellbeing through regular exercise and devotes spare time to pet care.

Backend Python Developer and Data Analyst
3/1/2023 - Present

Conducted data analysis by building backend solutions that process ETL, pre-process data, and publish analyses on websites for both internal and external use utilizing Python, Docker, and GCP. Developed a CRM + Chat + AI solution within the backend team, contributing significantly to the development of Webhooks and APIs using Python, MySQL, MongoDB, and Docker. Assisted in project development and requirement analysis to ensure the implementation of new features and the correction of identified bugs.
Data Scientist - Junior
12/1/2021 - 3/1/2023

Researched business problems in the B2B sector to identify machine learning opportunities. Developed proficiency in creating prototypes and proofs of concept (POCs) to assess the feasibility of projects involving Natural Language Processing (NLP) for multi-classification, entity recognition, and recommendation systems. Successfully built two projects from inception to completion, significantly enhancing user experience and optimizing team efficiency by reducing manual operation time.
Business Intelligence Analyst
6/1/2021 - 12/1/2021

Spearheaded projects aimed at enabling the analytical use of data within the Financial sector, utilizing expertise in Microsoft Power BI to create business intelligence solutions that automated reports and analysis. Leveraged Python for efficient data extraction to support tasks and initiatives in the Financial sector.
Junior Data Analyst
3/1/2021 - 6/1/2021

Led projects following Lean Six Sigma methodologies, ensuring efficient and quality-driven outcomes. Developed and implemented Business Intelligence solutions leveraging Microsoft Power BI, Python, and SQL. Utilized various databases to design and create comprehensive dashboards using Microsoft Power BI, enhancing data visualization and decision-making capabilities.
Data Assistant
3/1/2020 - 3/1/2021

Led the implementation of BI solutions strategy for Supply Chain, Finance, HR, R&D, PPC, and other departments. Utilized various databases, including SQL and TOTVS ERP, as well as cloud-based databases, to support data requirements. Conducted analysis, modeling, and data visualization using Microsoft Power BI and SQL. Developed data pipelines through Dataflow. Provided training and support for Power BI users, ensuring effective use and understanding. Managed and controlled Power BI services to optimize performance and reliability. Projects and tasks were guided by Scrum methodology, ensuring agile and efficient project delivery.
IT Intern
6/1/2019 - 3/1/2020

Developed proficiency in creating comprehensive reports in Power BI by integrating data sourced from TOTVS ERP. Gained expertise in data analysis, modeling, and visualization using DAX and M languages. Demonstrated skills in business process mapping through the application of the Value Proposition Canvas.