Hire the best Data Miners in Rio de Janeiro, BR
Check out Data Miners in Rio de Janeiro, BR with the skills you need for your next job.
- $15 hourly
- 4.9/5
- (11 jobs)
Currently, as a Trainer, I design and deliver tailored training programs for new employees, ensuring a smooth transition into their roles. I monitor trainee progress, provide ongoing feedback, and have led the redesign of our training course to better align with business goals and enhance learning effectiveness. With over 10 years of experience in digital marketing, I specialize in online and offline marketing, social media management, data analysis, translation, and administrative support. As a freelancer, I have built a strong reputation for reliability and trustworthiness, consistently receiving positive feedback from clients and colleagues. Beyond marketing, I have hands-on experience as a data analyst in machine learning and have worked as a data steward, managing multilingual data, which lead me to the Trainer position that I occupy currently. My professional approach is defined by reliability, punctuality, and a strong commitment to delivering excellent results. Fluent in English, Spanish, and Brazilian Portuguese, I effectively engage with diverse international markets. I hold a Degree in Culture Management from Fluminense Federal University (UFF). I manage @headedtoafrica’s social networks for over five years, consistently achieving solid results for the customer.
Data Mining
Multilingual TranslationAdministrative SupportData EntryTranslationFile ManagementOnline ResearchData AnalysisPortuguese to English TranslationData ManagementSpanish to Portuguese TranslationPortuguese to Spanish TranslationPhone CommunicationEnglish to Portuguese TranslationSocial Media Management - $50 hourly
- 5.0/5
- (6 jobs)
Hello and welcome to my profile! 🌟 I am a highly skilled and results-driven Data Engineer, Data Scientist, and Python Developer with a strong track record of delivering impactful data solutions and analytics. My extensive expertise lies in gathering business requirements, architecting cloud solutions, and improving data accessibility. I have successfully developed, implemented, and monitored complex data pipelines for industry-leading companies. My key strengths include: 💻 Data Engineering: Proficient in Spark, SQL, Big Data, ETL processes, and API integration, with a proven track record of developing and maintaining over 20 data pipelines to ensure data integrity and accessibility. 📊 Data Science & Analytics: Experienced in Machine Learning, Data Mining, and Business Intelligence, excelling in creating data-driven strategies and impactful visualizations that drive informed decision-making processes. 🐍 Python Development: Skilled in leveraging Python for data processing, automation, and building robust data solutions. Notable Achievements: 🌐 Developed a cloud-based data solution that significantly improved data accessibility and quality for big companies, benefiting multiple departments. 📈 Enhanced marketing and billing processes by correcting and enriching over 38,000 customer accounts, leading to substantial operational improvements. 🤖 Automated data extraction and transformation processes, reducing manual work by 75% and greatly enhancing efficiency. Education: 🎓 MBA in Software Engineering and Data Science and Analytics from Universidade de São Paulo. 🎓 BSc in Energy Engineering from Universidade de Brasília, with a thesis utilized in voluntary data science work to combat COVID-19. Certifications: 🏅 Prompt Engineering for Developers - DeepLearning.AI 🏅 Customer-Centric IT Strategy - University of Virginia 🏅 Microsoft Azure for Data Engineers - Microsoft As a Top Rated Freelancer on Upwork with a 100% job success rate and a 5-star rating, I am dedicated to delivering high-quality results and exceeding client expectations. Let’s collaborate to drive your projects forward with data-driven insights and cutting-edge technology. For more details and work samples, please check out my portfolio section.
Data Mining
GISSolution ArchitectureData EngineeringDatabaseAPIAnalyticsData ScrapingETLEnergy & UtilitiesAutomationData SciencePythonDigital Mapping - $25 hourly
- 5.0/5
- (5 jobs)
I graduated in economics in 2016. Next year I began studying for my master's degree application exam. My objective was to learn statistics and finance. So I was accepted and started my master's degree in 2018. Unfortunately, the institution I picked did not have a focus on statistics and finance. During my last semester, my frustration and problems with my advisor left me somewhat unmotived to finish my dissertation. So I went my master's degree. Since my graduation days, I have studied coding. I always thought that having the ability to gather, process, and analyze large amounts of data would be valuable in today's world. My first coding experience was with MATLAB and C/C#. MATLAB, my brother used to work with it, and I used to fiddle around to learn how to code ( did nothing special ). C/C#, I did a two-week tutorial I found online. Although I never used these two program languages later, they helped teach me some concepts in programming. While in my graduation, I started using the program languages R and Python. R I used due to its extensive statistical packages support, and the second to its more general usability. During My master's degree, I found myself doing some paid R coding. Usually, it was simple data inference, like running some simple code to find the best linear regression model with variable permutation. Furthermore, I did have some coding experience with Python in helping some research groups in reading SQL databases and scraping online data. After I exited my master's degree, early 2020, I did freelance coding data analysis ( ex.: Inflation prediction models ), machine learning ( ex.: House prediction models in Rio de Janeiro ), and data scraping. I have a Github page with examples github.com/marcoaurelioguerrap ( Although still in Portuguese, my native language. ). If you need statistical models for prediction, inference, or data to be scraped, or organized I might be helpful. Other knowledge I have are Risk Management ( VaR, ES calculations ), stock and options market backtesting, options price models ( BS, Monte Carlo, and SABR ), test for forecast Bias, regressions ( OLS, Logit, probit, Tobit, panel data, time series, GMM, ARIMA, GARCH ). less
Data Mining
Economic AnalysisEconomicsData AnalysisData ScrapingStatisticsSeleniumSQLData ScienceMachine LearningRPythonLinear Regression - $8 hourly
- 5.0/5
- (13 jobs)
Hello, I'm Vitor, a professional virtual assistant, translator and copywriter from Rio de Janeiro, Brazil. I have 2 years of professional experience translating from English to Brazilian Portuguese, and some of the works that I do include: Virtual Assistance: ✔Web Research ✔Scheduling appointments ✔Calling Establishments ✔Email communication ✔Administrative support Writing: ✔ Content writing ✔ Proofreading ✔ Editing ✔ SEO content Data Entry: ✔Formatting documents ✔Creating spreadsheet formulas ✅ Native Brazilian Portuguese ✅ Fluent in English for 6 years ✅ Back-End Developer ✅ Experienced in SEO ✅ Experience in the IT and programming area. ✅ Experienced in cryptocurrency ✅ Experienced with CAT Tools ✅ 2+ years in the translation field
Data Mining
Administrative SupportSchedulingVirtual AssistancePortugueseSEO ContentBrazilian Portuguese DialectCopywritingTranslationEnglishContent WritingMicrosoft ExcelSEO WritingGoogle DocsData Entry - $30 hourly
- 5.0/5
- (6 jobs)
Data Analyst with expertise in Python, SQL, VBA automation, API integrations, Web Scraping and Machine Learning. Recently, I worked at the biggest Brazilian Multi-Family Office, where I specialize in automating workflows, optimizing code, and generating data-driven insights. My past experience at SPX Capital - one off the biggest hedge funds in brazil - involved developing Python tools to support traders, analyze quantitative strategies, and streamline equity trading operations. With a solid foundation in Mathematics and ongoing studies in Data Science, I bring a methodical, results-oriented approach to every project. I’m passionate about helping clients optimize processes, unlock valuable insights from their data, and implement innovative solutions tailored to their needs.
Data Mining
Data ScrapingWeb ScrapingMicrosoft ExcelMicrosoft Power BIMultithreaded, Parallel, & Distributed Programming LanguageGitHubPlotlyStreamlitSQLPythonMachine Learning ModelMachine LearningAnalytical PresentationData Analysis - $38 hourly
- 0.0/5
- (0 jobs)
I’m Débora Mendes, a Geography student at the Federal University of Rio de Janeiro, passionate about GIS and Remote Sensing. I’m in the final year of my undergraduate program, set to graduate between June 2024 and June 2025. I have hands-on experience in both public and private institutions. At SCCON, as a Remote Sensing intern, I performed land use and land cover change classification in Brazilian biomes using high spatial resolution satellite imagery. This experience provided me with advanced skills in orbital imagery analysis and interpretation, as well as in geoprocessing techniques. At the Pereira Passos Institute, I was responsible for producing and organizing geospatial databases and information to support municipal public policies. During this period, I refined my cartography and geographic data management skills, directly contributing to projects that had a positive impact on Rio de Janeiro’s urban planning. I worked on thematic map creation and spatial data analysis, providing technical support for various municipal initiatives. Most recently, I’ve been interning at the Municipal Government of Duque de Caxias since February 2024, where I develop skills in producing georeferenced maps and location plans aimed at land regularization in the municipality. I use Google Earth Pro for orbital location of properties and redraw location plans of city blocks using CAD software. This position has been essential in sharpening my geotechnologies expertise as applied to public administration and urban planning, offering a practical perspective on the challenges and solutions for territorial management. Since January 2024, I have also been working as an undergraduate research fellow at the Institute for Applied Economic Research (Ipea). There, I participate in the “Continuous Monitoring of Federal Programs and Spending on Urban Development” project, where I am responsible for processing data sets and producing indicators and analyses from various data sources, including the PPAs, the Annual Budget Law (OGU), and the Ministry of Cities Investment Portfolio. My goal is to contribute to sustainable development and environmental conservation through geotechnologies, leveraging my experience and knowledge to promote effective, data-driven public policies 🌏
Data Mining
MiningAgriculture & Mining - $20 hourly
- 0.0/5
- (3 jobs)
Hello, I am a dedicated data science analyst with a strong foundation in business administration and a specialized postgraduate degree in data science. 📊 Data Management Proficient in employing advanced web scraping techniques for comprehensive data collection. Ensuring the quality and relevance of datasets through efficient transformation and cleaning processes. Expertise in data mining, leveraging advanced techniques to unearth valuable patterns, trends, and relationships within extensive datasets. Expert in designing and implementing seamless ETL processes for efficient data handling. Commitment to data quality assurance through rigorous measures to maintain dataset integrity and accuracy. Proficiency in database management, optimizing structures for streamlined access to data for analysis purposes. 🔍 Statistical Analysis Utilizing advanced statistical techniques to extract meaningful insights. Specializing in developing robust statistical models that predict trends and behaviors. 💻 Programming Languages (Python, SQL, Excel, Power BI) Proficient in Python for task automation and custom script development. Advanced data manipulation through Pandas/Excel/SQL queries. Skillful use of Excel and Power BI, creating interactive dashboards and dynamic reports. ⚙️ Automation and Productivity Tools Implementation of process automation to enhance operational efficiency. Expertise in data format conversion, including transforming XLSX to PDF for optimized presentation and information sharing. 📈 Data Visualization and Graphics Specializing in creating impactful visualizations, dashboards, and reports. As a newcomer to the Upwork platform, I am enthusiastic about applying my diverse skill set to contribute to projects that demand technical expertise and creativity. My academic background and practical experience uniquely position me to address various challenges in the field of data science and analysis. I am committed to assisting you in achieving your project goals and optimizing your data processes. Let's collaborate! KAGGLE - kaggle.com/eduardopalmieri GITHUB - github.com/eduardopfbp
Data Mining
SQLPythonMicrosoft Power BIMicrosoft ExcelData VisualizationData ScrapingData ScienceData ModelData EntryData AnalysisDatabaseETL - $10 hourly
- 0.0/5
- (1 job)
I’m a consultant and researcher with experience in data analysis, policy evaluation, and public administration. I have worked with survey design, workflow redesign, persona development, and communication planning for public and financial institutions. I have experience with data analysis, survey development, and policy monitoring. I have worked on process optimization, workflow redesign, and institutional research. I have developed personas and communication strategies for different audiences. I have collaborated with public institutions like INSS and UNDP. I have engaged in sustainability projects with the Climate Reality Project. I can help with data-driven decision-making, workflow improvement, policy research, and strategic communication planning. Clear communication and collaboration are important to me, so let’s connect.
Data Mining
Data ManagementData AnalysisMarket ResearchCompany ResearchData EntryProject ManagementMicrosoft ProjectGeneral TranscriptionAcademic Research - $15 hourly
- 0.0/5
- (0 jobs)
Hi, I'm Victor Mynssen — a dedicated and reliable Virtual Assistant and Research Specialist. I support individuals and businesses with essential tasks like data entry, online research, transcription, and general virtual assistance. I focus on delivering clear, organized, and accurate results that help clients save time and make better decisions. My goal is to build long-term partnerships based on trust, efficiency, and consistent performance. Whether you need help managing tasks, finding the right information, or staying organized, I'm here to assist in a professional and practical way. Let’s work together and make things easier for you.
Data Mining
Online ResearchData CollectionCustomer SupportLead GenerationFacebook MarketplaceProduct ListingsCalendar ManagementEmail ManagementGoogle SheetsMicrosoft ExcelMarket ResearchVirtual AssistanceGeneral TranscriptionData Entry - $25 hourly
- 0.0/5
- (0 jobs)
Objetivos: Em busca de oportunidades de Logística e Transporte | Dados | Planejamento | Administrativo ou em outras áreas dentro do meu perfil profissional. Síntese de Qualificações e Competências: Profissional na área de gestão de dados, processos logísticos, exercendo atividades no setor de estoque, expedição e planejamento, devolução e qualidade no relacionamento com cliente interno e externo, licitações eletrônicas e compra de materiais, otimização, gestão de inventários, acerto de inventário, medições de transportadores, indicadores de produção, elaboração de Dashboards, elaboração de relatórios gerenciais, melhoria contínua, mapeamentos de processos, indicadores da companhia em nível gerencial, gerenciar os níveis de estoque, mapeamentos em fluxogramas, POP, alinhamento com o time de qualidade a gestão dos estoques bloqueados e controle de qualidade, monitorar os níveis obsolescência e ter o melhor time de planejamento ações de exaustão deste estoque.
Data Mining
Information AnalysisAnalytical PresentationData Analysis - $25 hourly
- 0.0/5
- (0 jobs)
RESUMO Especialista em ciência de dados/ML, e modelagem computacional. Entre 2004 e 2015, atuei em tempo integral em centros de pesquisa, e desde de 2015 retornei ao setor privado para atuar em projetos de tecnologia. Atualmente, atuo integralmente com ferramentas Google Cloud que servem diretamente ou como apoio para o desenvolvimento de LLMs ou outros projetos de Machine Learning. Pela experiência multidisciplinar, meu diferencial é o foco na compreensão do problema do usuário, e sua tradução para um modelo que tenha o melhor aproveitamento para o negócio
Data Mining
Machine Learning ModelData AnalysisArtificial IntelligenceMachine Learning - $10 hourly
- 0.0/5
- (0 jobs)
Experienced Data Engineer with 5+ years in the data field, specializing in ETL processes using Pentaho and Python, Oracle PL/ SQL for data transformation, and data preparation for BI tools like Power BI. Skilled in building and maintaining Data Warehouses, consuming and integrating APIs, and web scraping using Python and Scrapy. I've also worked with ERP system automation through triggers and custom integrations. I enjoy working on the backend of data - organizing, structuring, transforming, and making it reliable for analytics and decisionmaking. Recently, I've been exploring AWS tools like RDS and AWS Glue with Spark to modernize my stack. Fluent in English and open to freelance or remote international opportunities. Passionate about creating robust data pipelines and making raw data useful. Let's connect!
Data Mining
Oracle PLSQLAWS GluePythonMiningETL PipelineETLData Extraction - $8 hourly
- 5.0/5
- (1 job)
I am a translator and have worked for a few companies since 2014. I am also a student majoring in Psychology with a vast knowledge in the field, I've made several articles about Educational Psychology, and one of them was even awarded in the JIC congress. I have perfected my skills in translation during the course of the reasearch I worked on, during that time I had to comprehend and translate several articles for the rest of the crew who didn't speak english. I am also familiar with Windows SO.
Data Mining
General TranscriptionEnglish to Brazilian Portuguese TranslationQualitative ResearchInternet SurveyComputer SkillsCounseling PsychologyTranslation - $25 hourly
- 0.0/5
- (0 jobs)
I work with data science and agricultural research. I write project proposals, reports and other things in Portuguese and English. Focus on data and geospacial data analysis. I recently started working part-time with translation, transcription, creative writing and text reviews. I am interested in translation, Brazilian Portuguese transcription and writing as well as data analysis and GIS jobs.
Data Mining
Geospatial DataGISSoilMachine LearningMicrosoft OfficeMicrosoft ExcelRGeneral TranscriptionVideo TranscriptionAudio TranscriptionData EntryBrazilian Portuguese AccentData AnalysisTranslation - $20 hourly
- 0.0/5
- (0 jobs)
Hello! My name is Pedro Ivo, I am a production engineer graduated from UFRJ, and I have worked as a Backoffice Analyst at an asset management company. During my university journey, I participated in challenging projects at the engineering junior company, where I developed skills in problem-solving and teamwork. My work at the asset management company allowed me to contribute to the launch of Latin America's first Bitcoin ETF on B3, an important milestone in the history of the financial industry. As a Backoffice Analyst, I am responsible for ensuring the efficiency of operations and ensuring compliance with regulatory standards. Additionally, my work at the asset management company has enabled me to develop process automation skills, data extraction, processing, and loading, primarily using Python and SQL. Knowledge: Python SQL Descriptive Statistics Exploratory Analysis
Data Mining
ETL PipelineData AnalysisData ExtractionETL Want to browse more freelancers?
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