Hire the best Data Scientists

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Clients rate Data Scientists
Rating is 4.8 out of 5.
4.8/5
based on 6,962 client reviews
  • $30 hourly
    I'm a data scientist with 5+ years of hands-on experience in machine learning and a strong math background (MSc. in Applied Mathematics). I can help you to build the whole ML pipeline from scratch or improve your solutions. Dealing with various tasks, such as NLP, Time Series Analysis, Computer Vision, GANs, developing bots for Stocks or/and Crypto markets, deploying APIs for ML models, etc. Skills: - Languages: Python - Frameworks: PyTorch, TensorFlow, Keras, Flask - Libraries: LangChain, NumPy, Pandas, Scikit-Learn, Matplotlib, Plotly, SciPy, NLTK, LightGBM, XGBoost - DB: MySQL, PostgreSQL, MongoDB - Version control: GIT - Other: Docker, Google Cloud, LLM, ChatGPT, LLaMA
    vsuc_fltilesrefresh_TrophyIcon Data Science
    Data Scraping
    Web Crawling
    ChatGPT
    Neural Network
    SQL
    Statistics
    Machine Learning
    NLTK
    Python Scikit-Learn
    Deep Learning
    Data Science Consultation
    Python
    TensorFlow
    Natural Language Processing
    Keras
  • $150 hourly
    I assist clients with clear definitions of target markets and how to engage with them. My approach is to understand their product or service, the pain points it seeks to address, and craft a strategy to evaluate. I leverage more than twenty years of market research experience to develop effective surveys or discussion guides to gather feedback from existing or potential customers, analyze and interpret results, and inform a recommended strategy. I am motivated by an innate need to see my clients succeed at their passion, and I take ownership of my client’s problems and work diligently to solve them. My client list is primarily made up of entrepreneurs and small businesses, though my skill set would pay dividends to any size organization. Industry verticals in which I have the most experience include consumer products, energy, technology, and digital marketing. Key skills include: • Survey Data Analysis (Quantitative & Qualitative) • Survey Design and Administration • Data Management Planning & Execution • Data Visualization • Product Development • Customer Segmentation • Marketing Strategy • Business Planning • Location Analysis (GIS) • Persona Development • Customer Journey Mapping I have deep experience using diverse tools across many of these skills, including Microsoft Office, SPSS, R, Tableau, Power BI, ArcGIS, QGIS, Python, and many others...I am also a seasoned user of primary data sources informing estimates used in market analysis such as population, labor force, age cohort, use of technology and social media, attitudes and behaviors, and additional indicators. Reach out to me if you are looking for someone to assist in either bringing a product to market, expanding an existing product, or struggling with managing critical data effectively.
    vsuc_fltilesrefresh_TrophyIcon Data Science
    Statistics
    Quantitative Analysis
    Microsoft Excel
    Startup Consulting
    Data Visualization
    Market Research
    Customer Acquisition Strategy
    Market Segmentation Research
    Competitive Analysis
    Survey Design
    Report Writing
    Data Analysis
  • $50 hourly
    Hey y’all 👋 I'm Eri, a physician-informatician in training at UT Health San Antonio with professional experience in health informatics, medical data science, and applied medical AI. I'm a MD/MS candidate in the first (and only) combined MD and Masters in Artificial Intelligence program in Texas--and handful in the nation. Throughout my medical training, I've witnessed how the synergy between medicine and technology grows stronger over time, and we need the right players at the interface to know how to connect the two in order to deliver the best care for patients. My skills are: 1. Data insights - Exploratory data analysis - Data wrangling, cleaning, tidying - Feature engineering - Descriptive summary statistics and other analyses - Data visualization (Markdown, Power BI, Plotly) 2. Artificial intelligence - Machine learning (random forests, logistic regression, xgboost, etc., for classification or regression tasks) - Deep learning (Tensorflow/Keras, PyTorch, Open AI) - Explainable AI (SHAP, LIME) - MLOps (Weights & Biases) 3. Data engineering (AWS, Azure, Google Cloud) - ETL - Database management (SQL and NoSQL, such as MongoDB) 4. “Omics” analysis - Clinical data analysis - Genomic/transcriptomic/proteomics data visualization and analysis - Grant- and publication-quality data visualization, analysis, and interpretation
    vsuc_fltilesrefresh_TrophyIcon Data Science
    Git
    Artificial Intelligence
    Data Visualization
    Biostatistics
    Big Data
    Medical Informatics
    Bioinformatics
    Deep Learning
    PyTorch
    R
    Machine Learning
    TensorFlow
    Python
    Computer Vision
  • $100 hourly
    AMONG TOP 27 Rated Data Scientists on Upwork 5x AWS CERTIFIED Machine Learning Engineer 𝐓𝐎𝐏 𝐑𝐀𝐓𝐄𝐃 PLUS Data Solutions Expert 𝟱+ 𝘆𝗲𝗮𝗿𝘀 of experience in the data industry, building small to large scale data solution pipelines for countless industries. 💡 Custom & Interactive 𝐃𝐀𝐒𝐇𝐁𝐎𝐀𝐑𝐃𝐒 and 𝐖𝐄𝐁 𝐀𝐏𝐏𝐒 💡 Efficient and Powerful machine learning models 💡 Data Analysis and Story Building 💡 ML empowered 𝐌𝐚𝐫𝐤𝐞𝐭 𝐀𝐧𝐚𝐥𝐲𝐭𝐢𝐜𝐬 💡 𝐍𝐋𝐏, 𝐂𝐕, 𝐃𝐞𝐞𝐩 𝐋𝐞𝐚𝐫𝐧𝐢𝐧𝐠 Implantations 💡 ETL 𝐃𝐚𝐭𝐚 𝐏𝐢𝐩𝐞𝐥𝐢𝐧𝐞 Creation 💡 𝗗𝗔𝗧𝗔 𝗖𝗟𝗘𝗔𝗡𝗜𝗡𝗚 & 𝗠𝗔𝗡𝗔𝗚𝗘𝗠𝗘𝗡𝗧 I work with the following tools and technologies: Python, Sci-Kit Learn, Django, Tensorflow, Keras, APIs, Requests, HTML, CSS, MySQL/PostgreSQL, AWS, RDS, EC2, & more! Send me a message and start a conversation!
    vsuc_fltilesrefresh_TrophyIcon Data Science
    Data Visualization
    Amazon EC2
    Machine Learning
    Python Scikit-Learn
    Python
    Deep Learning
    Keras
    Natural Language Processing
    Computer Vision
    Data Science Consultation
  • $200 hourly
    I've made a career out of using data and statistical analysis to solve business problems, but I'm much more than a machine learning practitioner or SQL ninja; I'm a critical thinker and problem solver. I can't wait to learn about your needs and help you figure out how to solve your problems using the most up-to-date Data Science or Machine Learning tools. I have broad experience in Data Science, having seen many projects through from data collection to implementation. My skillset includes: - ETL, Database Architecture, Data Mining - SQL mastery using any dialect (MySQL, PostgreSQL, Microsoft SQL Server) - The Python Data Science Stack: Numpy, Pandas, SciKit-Learn, Matplotlib, Jupyter - Linear Regression, Logistic Regression, GAM Models, Econometrics - Clustering, PCA, Decision Trees and other simple Machine Learning - Complex Machine Learning models Such as Gradient Boosted Machines using XGBoost - Data Visualization in ggplot, Matplotlib, Plotly Express, Power BI, and Google Data Studio - Creating and hosting Plotly Dash and R Shiny Dashboards. Freelancing is about more than just having hard technical skills, however. Since 2019, I have been able to make a living as a full-time freelancer in no small part due to my ability to make my clients happy. In this regard I like to focus on: - Communicating in the way that works best for the client - Sending regular updates or deliverable prototypes as appropriate - Setting realistic time expectations - Clarifying project expectations early so the deliverable is what the client actually wants - Meeting deadlines (you'd think this one would be obvious!) If this list sounds like it may just be lip service, please take a look at my client feedback. I love the freedom that comes with freelancing, and I know the only way I get to keep doing it is if I have consistently happy clients. If you are looking for a Data Scientist, Data Analyst, or Machine Learning engineer, I really think I could be your guy. You've read this far you must be somewhat interested right? :) Go ahead and reach out or send me an invite to your project. I'll definitely get back to you asap and am excited to see if we can work together!
    vsuc_fltilesrefresh_TrophyIcon Data Science
    ETL
    R Shiny
    Econometrics
    Machine Learning
    Data Scraping
    Python Scikit-Learn
    Python
    pandas
    SQL
    R
  • $25 hourly
    Accomplished, out-of-the-box thinker Data Scientist/Machine Learning engineer passionate about delivering valuable data through analytical functions and retrieval methods. Able to effectively self-manage during independent projects and collaborate as part of a productive team.
    vsuc_fltilesrefresh_TrophyIcon Data Science
    JavaScript
    Machine Learning
    Artificial Intelligence
    Natural Language Processing
    Computer Vision
    Flask
    RESTful API
    Docker
    PyTorch
    Keras
    SQL
    Python
    Git
  • $50 hourly
    I am a freelance data analyst, research/statistics adjunct professor, and educational psychology Ph.D. student with a strong foundation in statistics and data analysis. I have 6+ years of experience in research/data analytics, social and behavioral science research, and teaching college students (both at the undergraduate and graduate level). I am fluent in numerous statistical analysis programs such as SPSS, R/Rstudio, and JASP. I enjoy conducting quantitative analysis and problem-solving. Please feel to contact me with all your research and data analysis inquiries. Educational and Research Background: I am currently an educational psychology Ph.D. Student. I have both my master's degree and a bachelor's degree in psychology. I have conducted numerous research projects revolving around the identity formation of emerging adults' college students. I have a year's worth of experience as a research analyst intern where I conducted data analysis for numerous population health-based projects which topics included: resident burnout, dystocia, ventilation survivability, clinician bullying preparedness, the hospital-based prevalence for medical cases (i.e. domestic violence, lead poisoning, immunization records, and child abuse) and medical cases NYC GIS mapping (i.e. lead poison, eating disorders, domestic violence, etc.). My master thesis examined the differences in vocational identity and coping strategies among emerging adults in college by their current employment status and work experiences. Main Services Includes (but not limited): Statistical Analysis Creating Data Visualization Graphs & Tables for Statistical Results Writing APA-Style Statistical Reports Writing General Summary for Statistical Results Creating PowerPoint Presentations for Statistical Results Statistical Programs/Software Skills: SPSS R/RStudio JASP Jamovi GPower Excel Statistical Analysis Skills Include: Descriptive Statistics Data Visualization Linear Regression Models Generalized Linear Models (i.e., logistic, poison, ordinal. etc.) Moderation and Mediation Analysis t-test ANOVA Models (ANOVA/ANCOVA/MANOVA) Linear Discriminant Analysis Hierarchical/Multilevel Regression Models Factor Analysis (Exploratory and Confirmatory) Path Analysis and Structural Equation Modeling Non-Parametric Analysis Power Analysis Robust Statistics Supervised Machine Learning Algorithms (Linear Regression, Logistic Regression, Decision Trees, etc.) Unsupervised Machine Learning Algorithms (Kmeans, K nearest Neighbors, Apiori etc.) Other Skills: Advanced in Microsoft Office Programs (i.e. Word, Excel, PowerPoint) Proficient with Python Programming language Proficient with online survey distribution programs such as Qualtrics, Survey Monkey, Google Survey, and REDCap Proficient with digital movie maker programs such as Windows Movie Maker and I-Movie
    vsuc_fltilesrefresh_TrophyIcon Data Science
    Data Analysis
    Statistical Analysis
    Statistics
    Tutoring
    Quantitative Analysis
    Hypothesis Testing
    R
    Logistic Regression
    Data Visualization
    Machine Learning
    IBM SPSS
    Linear Regression
  • $50 hourly
    Biostatistics - psychometrics - neuroimaging - predictive analytics - longitudinal analysis - mediation As an expert in statistical analysis, I bring a comprehensive skill set and deep knowledge base to every project. With a background in life sciences, business analytics, and a broad range of other domains, I can easily handle complex data analysis challenges. My proficiency spans across several programming languages including R, Python, MATLAB, and bash. Holding bachelor's, master's, and PhD degrees, my academic and professional journey shows a solid foundation in statistics. This extensive education not only reflects my commitment to the field but also my capability to tackle analytical problems. My daily work involves the analysis of neuroimaging data across various modalities such as MRI, fMRI, and EEG, alongside behavioral and questionnaire data. This experience is complemented by my capacity to analyze data from diverse sectors including business and other scientific fields, demonstrating my ability to navigate and extract insights from complex datasets. To validate my expertise and showcase the breadth of my capabilities, my peer-reviewed research papers are available for review on Google Scholar. These publications highlight my contributions to the field and my proficiency in using complex data analysis techniques. Whether you're seeking guidance on the best approach for your data analysis, need assistance selecting the appropriate tools, or require implementation of advanced analytical methods, I am here to help. Let's collaborate to unlock the full potential of your data and drive your projects to success.
    vsuc_fltilesrefresh_TrophyIcon Data Science
    Biostatistics
    IBM SPSS
    Content Writing
    Data Modeling
    MATLAB
    Linear Regression
    Data Visualization
    Hypothesis Testing
    Microsoft Excel
    Data Analysis
    Big Data
    R
    Python
    Statistics
  • $150 hourly
    Why choose me: Will help you quickly achieve your goals using data. Will turn complex and overwhelming big data into understandable and easy to interpret business recommendations. Proficient in: Machine Learning, Python, SQL, R, Tableau, Power BI, Excel, Statistical Analysis, Marketing Analytics, Dashboard Creation and Maintenance. About me: Yale PhD in Economics. Years of experience analyzing various databases and data sources. Expert in machine learning, statistical analysis, and data-based business solutions. Extensive experience working with clients and internal stakeholders.
    vsuc_fltilesrefresh_TrophyIcon Data Science
    BigQuery
    Data Analysis
    Microsoft Power BI
    Statistical Analysis
    Google Search Console
    Mathematics
    Google Ads
    Microsoft Excel
    Visual Basic
    Data Visualization
    RStudio
    SQL
    Machine Learning
    Python
    Linear Regression
    R
  • $300 hourly
    I am an evangelist of the power of data to support decision-making for business. I also have a special interest in supply chain (which was the focus of my PhD). I use any and all tools necessary in order to understand a project and solve it effectively. I ensure I am working on the right problem and then use my technical expertise to deliver for my clients. I have spent 5 years working as a data consultant in a range of application domains. I am SnowPro Core certified, an INFORMS Certified Analytics Professional, and have my AWS Certified Data Analytics Specialty. Part of the Upwork Expert Vetted program (top 1% of the marketplace)
    vsuc_fltilesrefresh_TrophyIcon Data Science
    Operations Research
    Linear Programming
    Forecasting
    Mathematics
    Business Intelligence
    Algorithm Development
    R
    Time Series Forecasting
    Quantitative Analysis
    Supply Chain Management
    Inventory Management
    Linear Regression
    Snowflake
    Data Analysis
    Python
    SQL
  • $60 hourly
    Data Scientist with 8+ years of experience in digital signal processing, machine learning, and statistical modeling & testing. I got Google Data Analytics Professional Certificate. I have gained broad experience in Data Analytics through scientific studies including experimental design, data collection & analysis, visualization, and communication throughout many research projects. Skillset: - Programming: MATLAB, R, Python, and SQL (BigQuery) - Machine learning: LDA, SVM, NN/CNN, Naive Bayes, k-means clustering, and t-SNE - Statistical modeling & test: Regression, Correlation, GLM/GLMM, PCA, ICA, t-test, ANOVA/ANCOVA, and bootstrapping - Signal processing: Fourier/Wavelet transform, FIR/IIR filter design, sampling theorem, and resampling - Data visualization: ggplot2, Tableau, Matplotlib, and MATLAB - Electrophysiology: EEG/ERP, EMG, ECG, EOG, GSR, and eye tracker - Experimental design: Randomized-controlled trial, Case-control, and A/B testing Selected Publications: - Hiroshi, H, Nakanishi M., Tanaka, T., EEG Signal Processing and Brain-Computer Interface, Corona, 2022 (Textbook written in Japanese)
    vsuc_fltilesrefresh_TrophyIcon Data Science
    Biomedical Engineering
    Scientific Writing
    Statistical Analysis
    Data Visualization
    Data Analysis
    A/B Testing
    Time Series Analysis
    Tableau
    R
    Linear Regression
    MATLAB
    Python Scikit-Learn
    Python
    Machine Learning
    Logistic Regression
  • $50 hourly
    Holding a PhD degree in Informatics along with 12 years experience in Machine Learning and Signal Processing. --------- Machine Learning | AI | Biotech | Health Care Machine learning Predictive analysis Explanatory analysis Bayesian Statistics Model based machine learning Generative models Deep Neural Networks / Deep Learning / GNN, RNN, CNN, LSTM, Attention / LLMs, Langchain / RAG / Bioinformatics Microbiome Whole exome/genome Protein sequences/structures RNA-seq, metabolomics Networked (interaction) data Image Processing / Computer Vision, OpenCV NLP/NLU, LLM Dashboards (Rshiny, Dash), API, Docker, Git, Python, R, Keras, PyTorch, GCP, AWS, Bash, JavaScript, Flask, Hadoop, Spark, Jenkins, MLflow, TensorFlow
    vsuc_fltilesrefresh_TrophyIcon Data Science
    Computer Vision
    Recommendation System
    MLflow
    Algorithm Development
    Mathematics
    Natural Language Processing
    Analytics
    Deep Learning
    Predictive Analytics
    Bioinformatics
    MATLAB
    Machine Learning
    Python
    Statistics
  • $100 hourly
    🇺🇦 - WORKING FROM LISBON, PORTUGAL (UTC+1). I'm an ex-Googler 🚀and EXPERT-VETTED (TOP 1%) 😎digital marketer/strategist with 8+ years of experience in Google Analytics 4 , Google Tag Manager (GTM), Server-side tracking, Google AdWords (Google Ads) and Google Data Studio. Love creating data architecture that boosts businesses. I also speak JavaScript (JS) and SQL. I implement tracking for: - E-commerce businesses: custom made websites, Single Page Applications (SPA), CMS (Shopify, Woocommerce, Magento, Bigcommerce, Prestashop) - SAAS businesses - B2B My approach towards customers' success: Business goals 🎯 Technical KPIs 📋 Measurement 🔎 Reporting 📈 Optimization⚙️ I own a digital marketing agency named Perfmetrix 😎 where we specialize in: 🎯End-to-end analytics (including offline conversions and measurement protocol implementation) 🎯Universal Analytics / Google Analytics 4 and Google Tag Manager (GTM) tracking / Server-sde implementation 🎯Google Data Studio / Power BI / Tableau dashboards 🎯Custom cross-domain and cross-device tracking implementation 🎯 Facebook Pixel implementation 🎯 Pinterest Pixel implementation 🎯Conversion Rate Optimization (CRO) and User Experience and User Interface UX / UI analysis and advisory 🎯 Google Analytics reports analysis for business 🎯 Custom Reports and Business Intelligence Reports creation / Google Data Studio / Tableau dashboards 🎯 AdWords / Google Ads campaigns and maintenance for a wide range of business verticals (both B2C and B2B) including E-commerce and Lead generation; 🎯Google Shopping setup, implementation and strategy development 🎯 Google AdWords / Google Analytics Remarkering strategies deployment (Search Campaigns, Dynamic Remarketing, Standard, Business / Product Feeds) 🎯Marketing Strategy and Project management 🎯Market entry/development strategies using Google AdWords tools 🎯SEO (Search Engine Optimisation) services I also source teams with high-end Ukrainian software developers. Updated: 07/12/2023
    vsuc_fltilesrefresh_TrophyIcon Data Science
    Google Analytics 4
    Facebook Pixel Setup & Optimization
    Tracking Pixel
    Pixel Setup & Optimization
    BigQuery
    Machine Learning
    Data Analytics
    Google Tag Manager
    Analytics
    Digital Marketing
    Looker Studio
    Web Analytics
    Marketing Analytics
    Google Analytics
  • $45 hourly
    Hello, i'm a machine learning expert with very strong knowledge in NLP and computer vision applications. Currently, I'm ranked among the top machine learning freelancers in Egypt. -My practical experience in software development is attributed to the deployment of deep learning applications and chatbots in addition to 6 months of experience in a bioinformatics company. - I have +3 years of tutoring computer science topics with a focus on AI, machine learning, deep learning, natural language processing, and computer vision. - I have academic and practical experience in computer science topics and especially deep learning; I have worked as a professional research assistant in bioinformatics and natural language processing research projects in my university. - I have advanced level experience in the following technologies: * Programming languages: Python, javascript, Java, Julia, C++, C#, MATLAB. * Deep learning Frameworks: Pytorch, Pytorch lightning, TensorFlow, Keras, Optuna. * Cloud solutions: Google Cloud Platform, AWS, Azure. * Databases and Big Data: Hadoop, Spark, Hbase, Hive, PostgreSQL, SQLite
    vsuc_fltilesrefresh_TrophyIcon Data Science
    Database
    Chatbot Development
    Julia
    Artificial Intelligence
    SQL
    NLTK
    Data Science Consultation
    MATLAB
    Deep Learning
    Natural Language Processing
    Machine Learning
    C++
    Python
    TensorFlow
  • $200 hourly
    I am a tokenomics consultant with over 220+ projects of experience, which in turn have raised over 1 billion USD in funding. I focus on designing sustainable token economies for companies of all scales and businesses of all types. Too many projects in the crypto space follow a copy/paste approach to their tokenomics that can be devastating for the project in the long run. On the other side I believe in data-driven sustainable tokenomics design that adheres to the best practices in game theory and economics. I have also worked as a tokenomics advisor for multiple projects over long periods of time (2+ years) and have operational experience in being the CPO for a fully decentralized and permissionless crypto insurance project.
    vsuc_fltilesrefresh_TrophyIcon Data Science
    Tokenomics
    Security Token Development
    Security Token
    Blockchain, NFT & Cryptocurrency
    Token Standard
    Reward Token
    Blockchain Tokenization
    Blockchain Development Framework
    Utility Token
    Ethereum
    Blockchain
    Initial Coin Offering
    Machine Learning
    Python
  • $80 hourly
    I am teaching a Stanford University Machine Learning online course, which is the largest online AI training course with millions of students from all over the world. I had completed multiple leading-edge NLP and Computer Vision projects, acquired a Deep Learning certificate from DeepLearning.ai scoring 99.3%, and studying at MIT for Masters in Statistics and Data Science. I have completed the demanding probability and machine learning courses within my ongoing Master's in Data Science at MIT (50% completed). I earned Graduate Certificates in Machine Learning from Stanford University and Data Science from the University of Michigan. I am a Fullstack Web developer with React(MERN), having 8 years of C and C++ programming experience, 4 years of Embedded Linux experience, and working as head of cybersecurity with a financial corporation. I received Healthcare AI Data Scientist certificates issued by John Snow Labs and have hands-on experience using AWS SageMaker. I have extensive experience in NLP and fine-tuned many LLMs including GPT-3, GPT-Neo, and built a GPT-2 from scratch. I can help come up with a highly effective AI business strategy because I worked as Business Consultant for 11 years.
    vsuc_fltilesrefresh_TrophyIcon Data Science
    IT Consultation
    Strategy
    Business Analysis
    Information Security
    Deep Learning
    TensorFlow
    Model Tuning
    Python
    Computer Vision
    Natural Language Processing
    Machine Learning
    PyTorch
    C++
  • $138 hourly
    Cornell/MIT educated data scientist with financial modeling and digital analytics experience at Fortune 500 companies. • Academic experience as TA/RA at MIT and Cornell University. • Advanced R, Python, SPSS, SAS, Tableau, SQL, MPlus. Some of the projects I have done are: • Time series analysis, financial forecasting and other econometric methods • ANOVA, MANOVA, GLM, SEM in social sciences • Biostatistics and medical research including analysis of clinical trials • Regression modeling • Machine learning and various statistical models in big data • Valuation, investment analysis and financial modeling in the investment banking industry • Risk modeling • Computer vision • Digital analytics such as campaign analysis for display (Facebook Ads, Google Ad Manager, etc.), customer insights (Facebook Insights), lead tracking (CallRail), SEM/PPC (Google Ads), and web traffic (Google Analytics) analysis
    vsuc_fltilesrefresh_TrophyIcon Data Science
    Regression Testing
    Statistics
    Product Analytics
    Google Ads
    Data Analysis
    Biostatistics
    Marketing Analytics
    Econometrics
    Neural Network
    Time Series Analysis
    Tableau
    Python
    R
    SAS
  • $45 hourly
    An experienced data scientist with a broad knowledge in Computer Science. Higher Education: Bachelor of Embedded system Engineering (2019-2022) +2 years of professional work in Machine Learning and Deep Learning, Data processing/cleaning, deploying ml models to cloud (AWS, Digital Oceans), Creating Recommendation Systems and using state-of-the-art models for Deep learning tasks. Creating an artificial customer agent chatbot using Bert and RASA. Programming Languages & Frameworks Tensorflow, Python, R, Django, Flask, Dart, Flutter, SQL, MQL, C, C++ Data Science, Machine Learning & Mathematics Probability, Caculus 1/2, Advanced Machine Learning, Deep Learning Statistical Analysis, Sentiment Analysis, Data visualization, Data Analysis. Data Bases Management & Big Data SQL Server, MySQL, PostgreSQL, MongoDB, Elastic Search, Google Big Query, Firebase, Tableau, Hadoop Experience also includes various areas of backend web development, Rest APIs and logical/critical thinking for competitive programming problems.
    vsuc_fltilesrefresh_TrophyIcon Data Science
    BigQuery
    Data Analysis
    RESTful API
    MongoDB
    Django
    SQL
    Flask
    Deep Learning
    Machine Learning
    Keras
    Natural Language Processing
    Python
    TensorFlow
    Computer Vision
  • $50 hourly
    Hello, I'm Sam (Soheil), an experienced professional with a background in electrical engineering and computer engineering and a strong focus on programming, particularly in Python. With over 7 years of experience in Python programming and 5 years in Data Science, I offer my skills as a versatile backend developer and data scientist. Here are some highlights of my expertise: *Numeric analysis and visualization: Proficient in utilizing Python packages such as Pandas, NumPy, Sickit-learn, SciPy, Matplotlib, Seaborn, etc. for effective numeric analysis and visualization. *Fintech: Experienced in working with MT5 (in Python) and various financial APIs like Bloomberg, Kraken, Kucoin, and Binance. I excel in obtaining and preprocessing data, creating ML/DNN models for predictions, and conducting backtesting or paper trading to validate the models. I can also develop and deploy trading bots and strategies for different crypto/stock market APIs. *Image processing and computer vision: Demonstrated proficiency in image classification, object detection, object tracking, face recognition, and other related projects. Skilled in utilizing TensorFlow and OpenCV packages to achieve accurate results. *Back-end programming: Proficient in creating and deploying ML/DNN APIs using Flask, OpenAPI, and FastAPI, encapsulated in Docker containers. Well-versed in working with various databases such as MongoDB, MySQL, and Neo4j. Additionally, I have familiarity with AWS platforms like Sagemaker, EC2, SQS, Cloudwatch, as well as GCP. Feel free to reach out to me if you require a dedicated backend developer or a skilled data scientist and analyst for your team.
    vsuc_fltilesrefresh_TrophyIcon Data Science
    Machine Learning
    Cryptocurrency
    Bot Development
    Deep Learning
    Computer Vision
    Deep Neural Network
    Blockchain
    Data Scraping
    API
    Data Analysis
    Neural Network
    Analytics
    Python
  • $150 hourly
    I am an experienced data scientist with a background in artificial intelligence and robot vision. I also do software development for complex scientific applications and algorithm development using artificial intelligence, machine learning, pattern recognition, image processing, statistics, and advanced mathematics techniques. I primarily work in R and Perl. I have also worked in Lisp, Prolog, C, C++, Python, and Java. My experience includes related database design and integration for large complex datasets. In addition to independent work, I also manage software development teams. I also have an additional specialty in assisting customers with the development of government proposals. Responsibilities include storyboarding, organizing, writing, editing, formatting, graphics, project planning, budgeting, forms, and proposal team management. Customers vary in size from startups to Fortune 500 companies and proposal scale varies from SBIRs under $100K to over $100M. Experience with funding agencies including: Army, Air Force, DARPA, DOD, DOE, DOT, Transportation Research Board of the National Research Council, NIST, and USPS. Employment: 10 years as an independent consultant Soar Technology (Small Company) NovoDynamics, Inc. (Startup) Environmental Research Institute of Michigan (Non-Profit Research Institute) Education: Ph.D. Electrical Engineering - Purdue University M.S. Electrical Engineering - Pennsylvania State University B.S. Engineering Science - Pennsylvania State University
    vsuc_fltilesrefresh_TrophyIcon Data Science
    Technical Writing
    Grant Writing
    Research Proposals
    Proposal Writing
    White Paper
    Prolog
    Robotics
    Artificial Intelligence
    Data Mining
    Machine Learning
    R
    Computer Vision
  • $30 hourly
    An AI/ML engineer with more than three years of experience and expertise in the field of Machine Learning, Deep Learning, NLP and Computer Vision. I am also a Kaggle Competitions Master and Notebook Expert. I have won 1 gold, 6 silver and 5 bronze medals in various competitions. I bring the best AI solutions out there to every problem of my client. Area of expertise: - Generative AI and RAG-based applications - Computer Vision - Image Classification - Object Detection - Facial Recognition - Action Detection - Emotion Detection - Image Segmentation - 3D Image Classification - Natural Language Processing - Sentiment analysis - Entity extraction from a text - Text classification - Text analysis, tokenization, lemmatization, POS tagging, dependency trees - Unsupervised clustering of text - Outliers detection - Topic Modeling - Text similarity - Time series analysis - Text Visualization Skills: - Machine Learning/Deep Learning libraries: scikit-learn, TensorFlow, NumPy, Pandas, Matplotlib, Seaborn, jupyter Notebook, Anaconda, Keras, PyTorch - Machine Learning algorithms: Linear Regression, Logistic Regression, Support Vector Machines (SVM), Naive Bayes, KNN, Decision Tree, Random Forest, Gradient Boosting, Principal Component Analysis (PCA), KMeans, Agglomerative Clustering - Deep Learning Algorithms: Simple NN, CNN, RNN, LSTM, Transformers, BERT, GPT-3, GPT-2 - NLP: NLTK, spaCy, Gensim, word2vec, GLoVe, doc2vec, HuggingFace Transformers - Programming languages: JavaScript, Python - Collaboration and work management tools: Jira, Confluence, Trello, Basecamp - Cloud Computing and Containers: Docker, Google Cloud, AWS - Database Technologies (relational and non-relational): Microsoft SQL Server, Oracle, PostgreSQL, MongoDB (NoSQL) Moreover, I have built many end-to-end applications in ML in my past projects. Some of these can be seen in my portfolio. I am hard-working and passionate about solving the client's hunger for AI solutions. I am a quick learner with a problem-solving attitude, always interested in making long-term professional relationships with my clients to ensure the successful completion of the task within a deadline. I am ready to work on a wide range of projects including Predictive Analytics and reinforcement Learning.
    vsuc_fltilesrefresh_TrophyIcon Data Science
    Data Analysis
    Exploratory Data Analysis
    Artificial Intelligence
    Flask
    Recurrent Neural Network
    Machine Learning
    Unsupervised Learning
    Python
    TensorFlow
    Deep Learning
    Computer Vision
    Keras
    Natural Language Processing
    Deep Neural Network
  • $80 hourly
    I have a PhD in Psychology and I have over 13 years of experience manipulating large data sets and building statistical models. I have strong experience in using R for complex data analysis involving clustering, classification, latent-class analysis, growth curve modeling, propensity score analysis, regression discontinuity analysis and predictive models. I also have intermediate level of expertise in Python and SQL. I have strong expertise in SPSS, LISREL(for SEM) and MLwIN (For multi-level modeling). Moreover, I have experience visualizing/presenting data using various softwares including Tableau. I have published a number of articles in international peer reviewed journals and have experience designing different types of studies. I'm available for any work involving data: cleaning, structuring, mining, visualizing, analyzing and reporting. Moreover, I have over 11 years of experience mentoring graduate students through the dissertation process. Thus, I enjoy doing dissertation consulting.
    vsuc_fltilesrefresh_TrophyIcon Data Science
    Analytics
    Machine Learning
    Data Modeling
    Quantitative Analysis
    Statistics
    Brand Research
    Data Mining
    Data Analysis
    Market Research
    R
    IBM SPSS
  • $45 hourly
    Expert-Vetted (Top 1%) data analyst with more than 10 years of experience in different industries. I participated in numerous projects including successful applied machine-learning projects and use state-of-the-art technologies and tools to deliver the result that the customer expects. Have expertise in statistical analysis, time series analysis and predictions (including prediction interpretation), linear regressions, decision trees, and other ML and deep learning algorithms. In my projects, I use Python or R to work with data from various sources including API, AWS S3 buckets, different files, DBs and others. For data visualization purposes mainly use Plotly, ggplot2, Kibana, and Microsoft Power BI. Have expertise in reports, presentation, and dashboards creation and am able to explain complex data problems and conclusions in a simple way.
    vsuc_fltilesrefresh_TrophyIcon Data Science
    Data Analytics
    Statistics
    Data Visualization
    Plotly
    Microsoft Excel
    Microsoft Power BI
    Data Analysis
    Report Writing
    Data Cleaning
    Time Series Analysis
    Keras
    Machine Learning
    R
    Python
  • $70 hourly
    I am a data scientist with academic training in epidemiology and 5 years of working experience in data analytics for both government organizations and consulting firm. I have experience on those projects: - Developing data visualization products using R Shiny, Microsoft PowerBI or Tableau - Conducting observational studies using health administrative data such as HCUP NIS, Truven MarketScan, electronic medical records, etc. - Building prescriptive or predictive models (mixed effect model, logistic regression, clustering, decision tree, etc.) - Web scraping for data acquisition - Reports automation I excel at listening to clients' needs and delivering projects on time and within budget.
    vsuc_fltilesrefresh_TrophyIcon Data Science
    Data Modeling
    Public Health
    Forecasting
    Epidemiology
    R Shiny
    Machine Learning
    Logistic Regression
    Linear Regression
    Microsoft Power BI Data Visualization
    Data Visualization
    Data Analysis
    Python
    R
    SQL
  • $60 hourly
    I have been a freelancer for the past 7 years in different platforms. My services include data analysis, experimental design, software development-mostly but not exclusively in scientific scope. My strongest front is developing experiments and analyzing complex datasets. Programming Languages: • MATLAB (EEGLAB, Psychtoolbox) • Python • Javascript (Pavlovia) • R Softwares: • Excel • SPSS • Psychopy • Open Sesame Statistical Analysis Assistance Statistical models that I mostly use are: • GLM (All types of ANOVA, nested factorial ANOVA, Multiple and Simple Regression) • Non-parametric (Kruskal Wallis, Friedman's ANOVA, Mann-Whitney U) • Goodness of fit to a given distribution (gamma, normal, lognormal, etc.) Research Methods Assistance: I have expertise in research methods and statistical analyses (Ph.D. candidate in experimental psychology), especially in fields of psychology and neuroscience. We can create a research design from scratch if you need one. If you need a task for your experiment (stroop, go/gonogo, oddball, flanker etc.) , I can provide that for you via MATLAB (Psychtoolbox) or Python (Open Sesame, Psychopy-Pavlovia). You can find a more detailed description of my work below. Further Details of Available Services DATA SCREENING & PREPROCESSING • Survey/behavioral type of data (reformatting, missing data, outlier screening, violation of assumptions, reliability, factor analysis) • EEG or single neuron spike train data (artifact rejection, ICA, IIR filtering, wavelet convolution, peri stimulus histogram, etc.). DATA ANALYSIS & STATISTICS • Questionnaire data (Correlation, Simple & Multivariate Regression, Chi-Square, Factor Analyses etc.) • Behavioral data (reaction time, accuracy, omission via ANOVA or non-parametric tests) • EEG data (time-frequency analyses, inter-trial coherence analyses, ERPs, connectivity by phase coherence) • Single neuron data (entropy, mutual information estimation, correlograms) • Biological simulations (Matlab Code)
    vsuc_fltilesrefresh_TrophyIcon Data Science
    Academic Writing
    Research Papers
    R
    Technical Writing
    Statistics
    MATLAB
    IBM SPSS
    Hypothesis Testing
    Quantitative Analysis
    Experiment Design
    Data Analysis
  • $65 hourly
    I'm a data scientist based in Berlin with a background in data analysis using Python and R. My fields of expertise include data cleaning and preprocessing, machine learning, academic write-ups and reports, and professional dashboards and visualizations. As a professional, I've helped clients build data pipelines, extract clean data from messy sources, analyse and forecast data and communicate results clearly. I'm open to contract-based work involving both large and small projects. I thrive in projects with open communication and clear timelines. If this sounds interesting to you, let's get in touch. Here's an overview of my skill portfolio: - Data cleaning and preprocessing - Data analysis, including regression and classification techniques - Web scraping using Selenium and Scrapy - Machine learning using sci-kit learn and Google Cloud - Data visualisation using Power BI/Tableau/R/Python/Plotly - Dashboard building in Power BI/Tableau/Python/Dash
    vsuc_fltilesrefresh_TrophyIcon Data Science
    Data Visualization
    Business Intelligence
    Data Scraping
    Statistics
    Writing
    Network Analysis
    Analytics Dashboard
    Data Analysis
    Linear Regression
    Machine Learning
    Natural Language Processing
  • $75 hourly
    Hi! I am a Data Scientist (M.S. Operations Research) with 9+ years of experience developing data-centric solutions that create business value. From python to excel, user facing web applications to backend data collection and cleaning, I have experience across the data science spectrum: • Data Collection (API, Web Scraping, Document Parsing) • Data Manipulation (JSON, HTML, XML, Excel, CSV) • Data Visualization (Static and Interactive) • Modeling (Inference and Prediction) • Automation • Dashboard Design (Shiny, Excel) I have previously developed solutions using Python, R, SQL, VBA, Excel, and Linux. Most of all, I am passionate about using data to solve problems and improve processes.
    vsuc_fltilesrefresh_TrophyIcon Data Science
    Quantitative Analysis
    Data Analysis
    R Shiny
    Data Scraping
    Spreadsheet Software
    Machine Learning
    ETL
    Linear Regression
    Data Visualization
    Dashboard
    SQL
    Python
    Microsoft Excel
    R
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How to Hire Top Data Scientists

Hiring the right data scientist can be difficult, depending on how large your audience is and how complex your company’s data is. Utilizing Upwork allows you to access a global talent pool - you’ll be sure to hire the perfect data scientist that fits you and your company’s needs. 

What is a data scientist?

Whether it’s using A/B testing to choose between two designs, measuring the performance of your marketing channels by collecting the right KPIs, or data mining the competition to gain new insights on how you can approach your target market, data scientists get you the intel you need to make informed business decisions.Data scientists help businesses leverage data to get the answers they need to succeed.

How do you hire a Data Scientist?

You can source data scientist talent on Upwork by following these three steps:
  • Write a project description. You’ll want to determine your scope of work and the skills and requirements you are looking for in a data scientist.
  • Post it on Upwork. Once you’ve written a project description, simply post it to Upwork. Follow the prompts to help you input the information you collected to scope out your project.
  • Shortlist and interview data scientists. Once the proposals start coming in, create a shortlist of the professionals you want to interview. 
Of these three steps, writing your project description is the most important. It’s where you will determine your scope of work, the specific type of data scientist you need for your project, and your budget.

How much does it cost to hire a Data Scientist?

Rates can vary due to many factors, including expertise and experience, location, and market conditions.
  • An experienced data scientist may command higher fees but also works faster, has more specialized areas of expertise, and delivers higher-quality work.
  • A contractor who is still in the process of building a client base may price their data science services more competitively.
Rates typically charged by data scientists on Upwork are:
  • Beginner: $25 per hour
  • Intermediate: $37 per hour
  • Advanced: $50 per hour

Source: https://www.upwork.com/hire/data-scientists/cost/ 

Why hire data scientists?

Data scientists play a key role when a business makes a critical decision. They test theories and hypotheses, the results of which become eye-opening insights for key stakeholders. They can use this information to predict outcomes and make more informed decisions. Amongst other advantages of hiring data scientists are:

By mining large amounts of structured or unstructured data, an experienced data scientist can suggest certain actions that will improve customer engagement and increase revenue 

  • Develop machine learning and predictive analytics models to identify opportunities
  • Work with the Hadoop ecosystem, including Hive and Pig
  • Formulating important business questions and hypotheses, then testing validity with math and statistics

What’s the difference between a data scientist and a data analyst?

Data scientists and data analysts aren’t interchangeable, but they have a common goal: drawing insights from data. While their skills will overlap, data scientists generally have a broader and deeper skill set, especially regarding their business acumen. They’ll have technical knowledge an analyst won’t necessarily need daily, such as deep familiarity with Hadoop, advanced statistical modeling, artificial intelligence, and machine learning.

Data Scientist Hiring FAQ

How do you write a Data Scientist job post?

Your job post is your chance to describe your project scope, budget, and talent needs.  Although you don’t need a full job description as you would when hiring an employee, aim to provide enough detail for a contractor to know if they’re the right fit for the project.

Job post title

Create a simple title that describes exactly what you’re looking for. The idea is to target the keywords your ideal candidate will likely type into a job search bar to find your project. Here are some sample data scientist job post titles:

Senior data scientist / Machine learning engineer

Looking for an ML engineer for a research project

Data scientist is needed

Project description

An effective data science job post should include: 

  • Scope of work: From collecting the right KPIs to data mining, list all the deliverables you’ll need. 
  • Project length: Your job post should indicate whether this is a smaller or larger project. 
  • Background: If you prefer experience with certain industries, software, or statistical languages, mention this here. 
  • Budget: Set a budget and note your preference for hourly rates vs. fixed-price contracts

Data scientist responsibilities

Here are some examples of data scientist job responsibilities:

  • Data mining from valuable data sources 
  • Analysis of big sets of information to find patterns and possible solutions
  • Development of machine learning algorithms  
  • Close collaboration with IT team

Data scientist requirements and qualifications

Be sure to include any requirements and qualifications you seek in a data scientist. Here are some examples:

  • Data science and analytics (e.g., quantitative analysis, modeling, statistics)
  • Machine learning
  • Languages such as R, Python, and MATLAB
  • Big data frameworks such as Spark and Hadoop
  • Cloud platforms such as AWS

Ready to harness the power of data for your business or organization? Hire the best data scientist on Upwork today!

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