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Hire the best Data Miners in San Jose, CA

Check out Data Miners in San Jose, CA with the skills you need for your next job.
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Rating is 4.7 out of 5.
4.7/5
based on 516 client reviews
  • $65 hourly

    • 5.0/5
    • (45 jobs)
    Want to work with a Top-Rated Tableau & Data Analytics Expert? I build modern, visually compelling, and interactive dashboards, helping businesses unlock the power of their data to drive smarter decision-making. With 8+ years of experience in data analytics and data visualization, I focus on delivering clean, insightful, and interactive dashboards that help businesses grow. I’m well-versed across industries—whether it’s marketing data, sales reports, SEO dashboards, predictive modeling, or complex SQL and ETL workflows, I can build the best solution for you. What I do Best: ✅Business Intelligence & Data Visualization – Tableau, Tableau Prep, Power BI, Looker Studio, Zendesk Explore ✅Data Analysis – Python, SQL ✅Machine Learning & AI – Predictive modeling, forecasting, fuzzy matching algorithms, large language models (LLMs), retrieval-augmented generation (RAG) ✅ETL & Data Pipelines – Optimizing SQL queries, automating workflows ✅Excel Automation / VBA Macros ✅Cloud Data Solutions – Azure, AWS, Snowflake, BigQuery ⚡How I Work I start by understanding your goals, data sources, and key metrics. I then build an initial dashboard prototype, incorporating your feedback to refine it into a final, fully interactive solution. My focus is always on delivering clear, insightful, and visually compelling dashboards that make data-driven decision-making easy. Why Choose Me? ⭐ Proven Track Record – Top-rated on Upwork with 900+ hours worked, perfect 5-star feedback, and 100% job success. 💬 Excellent Communication & Transparency – I’m always clear, responsive, and provide frequent updates on project progress. 📊 Data-Driven Approach – I help you make informed decisions with precise, actionable insights. ⏳ Fast & Reliable – I respect deadlines and deliver high-quality results on time. I ensure that all key milestones are met without delays. 🏆 Industry Expertise – I’ve built dashboards for businesses in marketing, finance, e-commerce, and healthcare, helping them track KPIs, automate reporting, and extract real-time insights. What Clients Say About My Work: ✔"Kofi did a great job on ETL and ML tasks using Amazon Web Services (AWS). We'd be happy to work with him again." ✔"Kofi was great at communicating and meeting deadlines. He quickly adapted to a new data connector and delivered our dashboard efficiently. I appreciated his thoughtfulness and recommendations for improving our dashboard visualizations." ✔"Kofi was great to work with and very knowledgeable about Tableau. I will definitely work with him again if I can." ✔"It was an excellent experience working with Kofi. He consistently produces high-quality visualizations and delivers on time. He is committed, responsive to feedback, and flexible when project requirements change. I look forward to working with him on future projects!" 📅Need Help on Your Next Project? Let’s Chat! Let’s schedule a call to discuss your project objectives and how I can help you unlock insights, automate reporting, and build visually appealing, actionable dashboards.
    Featured Skill Data Mining
    Azure Machine Learning
    Macros
    Data Analysis
    Database
    Business Intelligence
    Data Science
    Data Visualization
    Microsoft Power BI
    Microsoft Excel
    Python
    Tableau
    SQL
  • $21 hourly

    • 5.0/5
    • (109 jobs)
    Over the last 11 years, I have worked here on Upwork as a data entry specialist for various clients. I worked for one client in social media and online reputation management for over six years. Because of this long history with one client, I consider myself well-versed in all aspects of Social Media and online presence. I have also worked for several other clients on one-time jobs, short-term projects, and repeat jobs for clients with projects ranging from app testing, web research, customer service, and administrative tasks to data entry. I am very comfortable using Google Docs, Google Sheets, Excel, Microsoft Office, and email. Before my freelance experience, I worked in healthcare. I spent five years in medical office administration and medical billing. After that, I spent five years working as a Certified Medical Assistant with duties ranging from Patient care, scheduling, general office duties, Medical records as well and Electronic Medical Records implementation and usage/training. I have been employed as an office assistant and office manager for a holistic doctor's office. I worked 90% remotely and 10% in the office for two and a half years. My responsibilities included office administration, email management, office social media management, newsletter creation, client billing as well as office errands. I recently graduated from Capella University with a Bachelor's degree in Psychology - a program that was 100% internet-based. My extensive remote online work history aided me in completing this program in minimal time and utilized my time management and self-monitoring skills.
    Featured Skill Data Mining
    Administrative Support
    Google Sheets
    Scheduling
    Electronic Medical Record
    Medical Translation
    Critical Thinking Skills
    Email Communication
    Online Research
    Company Research
    List Building
    Data Entry
    Typing
    Microsoft Office
    Google Docs
  • $85 hourly

    • 5.0/5
    • (1 job)
    Data Analytics and Data Science professional with more than 5 years of experience in the industry with hands on technologies like SQL, Snowflake, Alteryx, Tableau, Python etc.
    Featured Skill Data Mining
    Data Analytics & Visualization Software
    Data Cleaning
    ETL Pipeline
    Alteryx, Inc.
    Tableau
    Python
    SQL
    Data Analytics
    Data Analysis
    Data Science
  • $50 hourly

    • 0.0/5
    • (0 jobs)
    With extensive experience in deep learning and machine learning, I have developed strong skills in prompt engineering and data preprocessing/filtering for instruction tuning for both LLMs and VLMs. My expertise has consistently enhanced model accuracy and contextual understanding. In the era of the explosion of large models, I have become very interested in the application of large models in actual business scenarios. In my recent role as the NLP Tech Lead at Deep Clint, I was actively involved in prompt engineering for large language models (LLMs) such as Llama and GPT-4o, as well as visual language models (VLMs) like GPT-4-v. I designed and refined prompt structures that significantly enhanced both accuracy and contextual understanding, which contributed to improved performance across various tasks. My ability to iteratively develop and document effective prompt strategies has been pivotal in optimizing model outputs and ensuring that they meet the specific needs of diverse applications. my main areas of expertise are: 1. Data Preprocessing for Large Models (LLMs and VLMs). 2. Prompt Engineering. Craft and refine prompt structures for LLMs and VLMs to improve response accuracy and contextual understanding. 3. AI-Assisted Data Annotation. Apply LLMs and VLMs for pre-labeling to accelerate and improve annotation accuracy and efficiency. I am excited about the opportunity to bring my unique skill set to the field of LLMs and VLMs. Please contact me about how I might be able to help you with a project.
    Featured Skill Data Mining
    Deep Neural Network
    Artificial Neural Network
    Chinese
    R
    Python
    Data Analysis
    Machine Learning
    Artificial Intelligence
    LLM Prompt Engineering
    LLM Prompt
    Natural Language Understanding
    Natural Language Generation
    Natural Language Processing
    Deep Learning
  • $50 hourly

    • 0.0/5
    • (0 jobs)
    I'm an experienced consultant who has created custom solutions for Fortune 500 teams including dynamic finance and application models, flexible project templates and project management dashboards. • Proficient in Python, SQL, Tableau, Jira • Full project management with clear communication from start to finish • Excels in situations where solutions are not clear cut and need out-of-the-box thinking
    Featured Skill Data Mining
    Data Entry
    Data Visualization
    Agile Project Management
    Project Management
    Data Extraction
    Data Analysis
  • $50 hourly

    • 0.0/5
    • (0 jobs)
    Data Science & Analytics Expert | 10 Years of Experience | End-to-End Data Solutions 🔹 Extensive Industry Experience: A highly skilled data scientist with 10 years of experience in data analysis, machine learning, and business intelligence (BI) across various industries, including retail, e-commerce, and technology. Adept at extracting valuable insights from complex datasets to drive business growth and strategic decision-making. 🔹 Data Analysis & Modeling: Proficient in statistical analysis, predictive modeling, and advanced analytics. Expertise in leveraging Python, R, SQL, and big data tools (Spark, Hadoop) to clean, process, and analyze large datasets efficiently. 🔹 Machine Learning & AI: Strong background in building, training, and deploying machine learning models, including regression, classification, clustering, and deep learning applications. Experienced in frameworks like TensorFlow, PyTorch, and Scikit-learn. 🔹 Data Engineering & Visualization: Skilled in ETL processes, data pipeline development, and working with structured/unstructured data. Expertise in data visualization tools like Tableau, and Matplotlib to present insights effectively to stakeholders. 🔹 Business & Strategic Impact: Proven ability to translate data insights into actionable business strategies. Strong communication and storytelling skills to bridge the gap between data and decision-making for executives and cross-functional teams.
    Featured Skill Data Mining
    Data Scraping
    Data Science Consultation
    Data Science
    Data Extraction
    Data Engineering
    Data Cleaning
    Data Analysis
    Apache Hadoop
    PowerPoint Presentation
    Tableau
    Microsoft Excel
    Python
  • $80 hourly

    • 0.0/5
    • (0 jobs)
    Engineer and Manager with 20+ years experience working in Silicon Valley. People and project management experience. PMP certified. BSEE from UCLA, Also MS in engineering and an MBA.
    Featured Skill Data Mining
    Mining
    Information Analysis
    Data Analysis
    Beta Testing
    Analytical Presentation
    Alpha Testing
  • $50 hourly

    • 0.0/5
    • (0 jobs)
    • Machine Learning Engineering - Developed custom stable diffusion models, chatbots, and AI companions that attracted 20k+ followers • Quantitative Analysis - Created trading algorithms that outperformed competitors and delivered highest return rates • Data Mining & Pattern Recognition - Turn raw data into actionable intelligence through custom pipelines • Full-Stack AI Development - Build complete solutions from database to frontend using React, Node.js, and modern AI tools My physics foundation gives me an edge in understanding complex systems, while my technical skills in Python, TensorFlow, and cloud infrastructure ensure I can implement robust, scalable solutions. Whether you need predictive analytics, computer vision systems, or generative AI applications, I deliver measurable results that impact your bottom line.
    Featured Skill Data Mining
    Translation
    AI Chatbot
    AI Agent Development
    Quantitative Analysis
    Python
    C
    Java
    Natural Language Processing
    Sales Call
    Web Crawler
    Machine Learning
    Web Application
    Mobile App
    Artificial Intelligence
  • $40 hourly

    • 0.0/5
    • (0 jobs)
    I am a data analyst having more than 5 years experience in data analysis( data wrangling, data modelling, data validation , data mapping, data mining) using Excel,Sql and building reports and dashboards in Tableau and Power BI to communicate important business insights.
    Featured Skill Data Mining
    Data Scraping
    Data Extraction
    Alpha Testing
    Data Analysis
  • $34 hourly

    • 0.0/5
    • (0 jobs)
    I am a Data Analyst who leverages data-driven insights and statistical analysis to support business decision-making and strategic growth. With a strong background in SQL, Python, and data visualization tools like Power BI and Tableau, I excel at transforming raw data into actionable intelligence for organizations. Knows SQL, Python, R, Excel, Tableau, Power BI, and much more. I am an expert at implementing end-to-end projects.
    Featured Skill Data Mining
    Mining
    ETL Pipeline
    Data Extraction
    Analytical Presentation
    Beta Testing
    Alpha Testing
    ETL
    Data Analysis
  • $60 hourly

    • 0.0/5
    • (0 jobs)
    Experienced technician with a demonstrated history of working in the construction industry. Ability to work with employees, customers and management on multiple projects simultaneously. Proficiency in delivering exceptional service catered to our clients' specific goals and vision. Strong analytical skills to solve problems that may come up during a typical workday in analyzing data and making decisions that affect the project on a regular basis. Self-motivated, hungry to learn, and passionate about making an impact to consumer needs.
    Featured Skill Data Mining
    Data Extraction
    Data Analysis
  • $60 hourly

    • 4.9/5
    • (87 jobs)
    With over 10 years of experience, I specialize in delivering AI-powered solutions and data-driven insights that help businesses innovate, optimize processes, and make informed decisions. ✅ Top 1% ranking on Upwork, ✅ Completed over 200 projects ✅ 100% client satisfaction rate ✅ $700k+ freelancer earnings ✅ $1M+ through Upwork agency. Core Expertise and Skills - Artificial Intelligence & Machine Learning: Generative AI, Large Language Models (LLMs), NLP, Computer Vision, and Time Series Forecasting using OpenAI GPT-4, Claude, Gemini, Llama, HuggingFace, and Transformers. - Data Analysis & Insights: Identifying trends and opportunities using descriptive and advanced analytics. - Interactive Dashboards & Visualizations: Creating user-friendly dashboards with Power BI and Tableau that tell compelling data stories. - Data Automation & Workflow Optimization: Automating repetitive tasks and ETL processes with Python, SQL, and advanced spreadsheet tools. - Production-Ready AI Solutions: Deploying models using Langchain, LlamaIndex, and DSPy for real-world applications. - Cloud & MLOps: Proficient with AWS, GCP, Azure, and platforms like Weights & Biases, Neptune, and MLFlow. - Database Systems: Expertise in SQL, Faiss, Weaviate, Pinecone, Neo4J, MongoDB, PostgreSQL, and BigQuery. Notable Projects 🏆 Legal Document AI Platform: Extracted and categorized legal clauses with advanced NLP techniques, enhancing contract analysis and decision-making. 🏆 CO2 AI Dashboard: Built a platform to measure and track carbon footprints, enabling companies to achieve Net Zero Pathways using real-time analytics. 🏆 Automated Crypto Trading Bot: Developed a machine learning bot that consistently outperformed human traders through predictive analytics. 🏆 Islamic Development Bank KPI Analytics: Created visualizations and reports that streamlined performance tracking for C-level executives and operational teams. 🏆 Polio Vaccination Tracking System: Enhanced efficiency and reduced costs by developing a mobile app and dashboard to monitor vaccination teams in high-risk areas. Why Work With Me? ✅ Proven Track Record: 150+ successful projects and $600k+ in earnings on Upwork Freelancer and $1M+ earnings on Upwork Agency Profile. ✅ Business-Driven Solutions: I focus on aligning technical solutions with real-world business value. ✅ Communication & Efficiency: I ensure clear communication and rapid project turnaround. Let’s work together to unlock the power of AI and data for your business!
    Featured Skill Data Mining
    Back-End Development
    Chatbot Development
    Data Extraction
    Data Engineering
    Data Analytics & Visualization Software
    Predictive Analytics
    Artificial Intelligence
    Front-End Development
    Artificial Neural Network
    Data Science
    TensorFlow
    Python
    Natural Language Processing
    Machine Learning
  • $25 hourly

    • 5.0/5
    • (1 job)
    I've had multiple years of experience in Software Development and graduated from UCSD with a Bachelor's in Machine Learning. I know multiple languages and tools such as Python, Java, C#, R, AWS, SQL, Git, Tableau, and many more. I've had a lot of experience in both Backend and Frontend having built APIs and worked on many features for websites.
    Featured Skill Data Mining
    Data Engineering
    Data Analysis
    Data Entry
    Microsoft Excel
    AWS CloudFront
    R
    Figma
    Tableau
    Machine Learning
    Java
    Python
    SQL
  • $20 hourly

    • 0.0/5
    • (0 jobs)
    A seasoned software developer with expertise in Java, JavaScript/Node.js, Python, and C/C++, known for driving customer success and leading technical teams to deliver high-impact solutions. Skilled in managing complex projects across Manufacturing, PLM, eCommerce, Retail, and CPG, with hands-on experience in SOA, Microservices, and N-Tier architectures. Demonstrated pre-sales and post-sales leadership in acquisitions by companies like Borland, BEA Systems, TIBCO, and SAP. Brings an entrepreneurial spirit, strong analytical skills, and effective communication to every project.
    Featured Skill Data Mining
    ETL Pipeline
    ETL
    Data Extraction
    Data Analysis
    Analytical Presentation
    Beta Testing
    Alpha Testing
  • $25 hourly

    • 0.0/5
    • (0 jobs)
    I’m a data analyst with a background in Python, machine learning, and SQL, looking to help businesses turn raw data into actionable insights. Whether you need data cleaning, visualization, or predictive modeling, I can assist in making data-driven decisions. What I Offer: ✔ Data Cleaning & Preparation (Pandas, SQL) ✔ Data Visualization (Matplotlib, Seaborn, Power BI) ✔ Statistical Analysis & Machine Learning (Scikit-Learn, NumPy) ✔ SQL Queries & Database Management ✔ Automated Reporting & Dashboards I value clear communication and timely delivery. Let’s discuss how I can support your data needs!
    Featured Skill Data Mining
    Predictive Modeling
    Microsoft Excel
    Microsoft Power BI
    SQL
    Python
    Data Engineering
    Data Analytics
    Machine Learning
    Artificial Intelligence
    Data Analysis
    Analytical Presentation
    Beta Testing
    Alpha Testing
  • $25 hourly

    • 5.0/5
    • (1 job)
    Hi, Thanks for visiting my profile. I have 8+ years of sales and marketing experience. My team and I have been working together on Lead Generation, LinkedIn Marketing, Content Strategy, Data Mining, Email List Building, Property Records, Owner Contact Info, and other admin tasks for our valued clients since 2015. We pride ourselves on providing quality services to our clients. Example of our Expertise and Resources: - List Building - Web Research for company websites collecting contact information like Owners, CEO, COO, etc. - We can pull mailing addresses of Homeowners - Validate emails through web research or by using the company's domain, refer to the tools section below. We use email verification tools to ensure deliverability. - Build a list of leads for using Sales Navigator, LinkedIn, Crunch Base, Spokeo, Been Verified, Zoominfo, etc. -LinkedIn Sales Navigator -YouTube Channel Set-Up -Social Media bio writing and Set-Up -End cards, Thumbnails, Custom Social Media Graphics -Eventbrite Event (set up and emails) -LinkedIn Event Marketing (set up and messaging, database build) -Podcast lists by industry, target audience -Guest Podcast list, strategy and messaging Common Tools: Name2Email, LeadLeaper, Lusha, Appolo, Hunter, Snovio, Aeroleads, Find That Lead, Skrapp, 1 Prospect.io, RocketReach, Nymeria, Lusha, GetProspect, ZeroBounce, and NeverBounce. Take a look at my profile, you can find examples of our work online and on LinkedIn. Let's set a meeting to discuss the details of the work and start the project together. Thanks
    Featured Skill Data Mining
    Sales Lead Lists
    Prospect List
    Data Entry
    LinkedIn Sales Navigator
    Email
    Lead Generation
    Data Cleaning
    Lead Nurturing
    Data Collection
    Email List
    Research Methods
    Data Extraction
  • $100 hourly

    • 0.0/5
    • (0 jobs)
    I'm a data scientist experienced in analyzing different kinds of retail & e-commerce data for both B2B & B2C. I use SQL & Python to analyze the data. I have hands on experience with Google Analytics, Adobe Analytics, Adobe Target, Optimizely, Braze, Snowflake, AWS & Tableau. I can help with: - App Store Optimization on iOS platform - Keyword bidding strategies on Google/Bing - Building & Analyzing Marketing Mix Modeling - Building & Analyzing Multi Touch Attribution Models - Performance Marketing Analytics - Ads Measurement - A/B Test Experimentation - Loyalty & Personalization Analytics - Data Science Modeling
    Featured Skill Data Mining
    AI Agent Development
    SQL
    Loyalty Marketing
    Artificial Intelligence
    Performance Measurement
    Marketing Analytics
    A/B Testing
    Data Science
    Analytical Presentation
    Machine Learning Model
    Data Analysis
  • $150 hourly

    • 0.0/5
    • (0 jobs)
    PROFESSIONAL SUMMARY Experienced Data Engineering and Analytics professional with 10+ years of experience designing and optimizing data pipelines and architectures for large-scale platforms. Expertise in Apache Spark, Flume, and DataFlow, with a strong focus on data governance, security, and business intelligence. Proven ability to lead teams for crossfunctional projects, enhance data processing efficiency, and support data-driven decision-making for global organizations.
    Featured Skill Data Mining
    NoSQL Database
    Apache Kafka
    ETL Pipeline
    Machine Learning Model
    ETL
    Data Extraction
    Machine Learning
    SQL
    Tableau
    PySpark
    Python
    Apache Spark MLlib
    Apache Airflow
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