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  4. (Current) Vertica Specialists
  • $55 hourly

    • 5.0/5
    • (26 jobs)
    I have a graduate degree in Intelligent Decision Support Systems and have been building solutions to transform unstructured data into meaningful dashboards since 2007. I love helping companies measure performance, understand customer preferences and optimize routines. To achieve that, I have developed ETL processes, data warehouses and reports for industries including digital marketing, retail, finance, logistics, telecom and insurance. I am a fan of author Ralph Kimball's data warehouse development approach and have developed many dimensional data models based on his tips. For one of the most complex projects that I have worked on, using Weka I designed a logistic regression model to optimize open rates for email marketing. Tools that I am familiar with: • Reporting tools: Microsoft Power BI, Google Data Studio, Sisense, Metabase, Qlik Sense, Zoho Analytics, IBM Cognos Analytics, SQL Server Analysis Services (SSAS), SQL Server Reporting Services (SSRS) • Database systems: Oracle, PostgreSQL, Microsoft SQL Server, MySQL, Amazon Redshift, Azure SQL, Google BigQuery, Snowflake • ETL tools: Pentaho Data Integration, SQL Server Integration Services (SSIS), DBT, Azure Data Factory, Alteryx Designer, Stitch, Fivetran • Programming languages: SQL, T-SQL, Oracle PL/SQL Programming, DAX
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    SQL Programming
    Looker Studio
    Cognos
    Data Integration
    BigQuery
    Microsoft Power BI Data Visualization
    Data Visualization
    ETL
    Microsoft Azure
    Dashboard
    Data Warehousing
    Pentaho
    Business Intelligence
    Qlik Sense
    Sisense
  • $50 hourly

    • 4.9/5
    • (21 jobs)
    🎖️ Top Rated Plus Freelancer 🎖️ 𝟖+ 𝐘𝐞𝐚𝐫𝐬 Expertise│𝟑𝟎 𝐓𝐁+ data Projects│𝟑𝟎𝟎+ Data Sources Integrated │𝟏𝟓+ Projects Do you believe in the power of data? Well, I do. Bilal Here, a Senior Data Engineer specializing in data visualization and integration. ➡️ DATA ENGINEERING SERVICES Data Visualization │Data Integration │Database Management │Reporting ➡️ TOOLS AND TECHNOLOGIES ▸𝐄𝐓𝐋 𝐓𝐨𝐨𝐥𝐬: AWS Glue, Informatica, SSIS, Pentaho, Talend ▸𝐂𝐥𝐨𝐮𝐝 𝐒𝐞𝐫𝐯𝐢𝐜𝐞𝐬: AWS (Lambda, Athena, Redshift), Azure, Azure Databricks, GCP ▸𝐀𝐧𝐚𝐥𝐲𝐭𝐢𝐜𝐬 𝐚𝐧𝐝 𝐑𝐞𝐩𝐨𝐫𝐭𝐢𝐧𝐠: Power BI, Tableau, Sigma ▸𝐏𝐫𝐨𝐠𝐫𝐚𝐦𝐦𝐢𝐧𝐠 𝐋𝐚𝐧𝐠𝐮𝐚𝐠𝐞𝐬: Python, Java, C# ▸𝐃𝐚𝐭𝐚𝐛𝐚𝐬𝐞𝐬: Teradata, DBT/Snowflake, PostgreSQL, DynamoDB, Google BigQuery, ▸𝐌𝐞𝐭𝐡𝐨𝐝𝐨𝐥𝐨𝐠𝐢𝐞𝐬: Data Warehousing, Data Migration, ETL Architecture ➡️ DATA DEVELOPMENT LIFE CYCLE ▸Complete data visualization development life cycle Requirements ➔ Testing ➔ Precision and excellence in projects ▸Data integrations, business analytics, and reporting using ETL tools. ▸Integrate APIs like Magento, RETS, TwinFields, Exact Online, Salesforces, Marketo, Followup, Data One, and Social APIs. ➡️ WHY HIRE ME? Professionalism │Team player │ Analytical and design skills │On-time project delivery 📢 Ready to take your data visualization and integration to the next level? Let's connect and discuss your project requirements. Together, we'll unleash the full potential of your data and drive remarkable business insights! 🌟
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    SQL Server Integration Services
    SQL Programming
    AWS Lambda
    PostgreSQL
    BigQuery
    Teradata
    Big Data
    Jaspersoft Studio
    Amazon Redshift
    Informatica
    Talend Data Integration
    ETL
    Snowflake
    Pentaho
    AWS Glue
    Microsoft Power BI
    SQL
  • $40 hourly

    • 5.0/5
    • (20 jobs)
    Data analyst focused on data-driven insights for business and research. I specialize in research, data analysis, predictive modeling, time series processing, forecasting, machine learning, and artificial intelligence. I have experience in analyzing and modeling complex data to obtain clear and pragmatic insights. I have extensive experience in mathematical modeling and in academic research. I am an expert in R, MatLab, and Python, and I have a solid knowledge of Excel and Shiny.
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    Artificial Intelligence
    Operations Research
    Pattern Recognition
    SQL
    Time Series Analysis
    Mathematical Modeling
    Predictive Analytics
    Data Analysis
    MongoDB
    Machine Learning
    R
    Natural Language Processing
    Deep Learning
    Anomaly Detection
    Python
  • $40 hourly

    • 5.0/5
    • (16 jobs)
    I am a Certified Google Professional Data Engineer/Cloud Architect with 5+ years of work experience in Data Engineering, Database Design, ETL Development and Testing of various Data warehouse projects with Google Cloud Platform Technical skills: ✅ Build and architecture multiple Data pipelines, end to end ETL process for Data ingestion and transformation in Google Cloud Platform. ✅Data modeling for an enterprise data warehouse implementation. ✅Python programming, SQL, GCP stack for Data Processing and Apache Airflow for Data Orchestration. ✅Data pipelines architecture and deployments (airflow, Kubernetes). ✅DWH life cycle Documentation, Logical/Physical Data Modelling and Big Query Optimization. ✅Highly skilled data engineer with years of expertise in DBT (Data Build Tool). Proficient in transforming and modeling data, optimizing workflows, and ensuring data quality. Experienced in seamlessly integrating DBT with diverse platforms to create robust data architectures I can provide help in various services dealing with bounded/unbounded data following are some some services which I can provide you 🌟API Integration. 🌟Real-time Data Pipelines. 🌟Batch Data Pipelines (GCP,Azure and AWS) 🌟3rd Party Tools integrations like DBT (Data Build Tool), Zapier, Stitch Also, I am Experienced with a strong background in SEO startups, adept at integrating essential APIs including DataforSEO, ScreamingFrog, and Advance Web Ranking (AWR). Leveraging these APIs, I have consistently delivered data-driven insights to optimize search engine strategies and drive organic growth. Additionally, I implemented a seamless Google Sheets interface connected to BigQuery, empowering cross-functional collaboration and enabling efficient data management for impactful digital marketing solutions.
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    Data Engineering
    Data Warehousing
    API Integration
    ETL Pipeline
    Data Warehousing & ETL Software
    Data Migration
    Google Cloud Platform
    Data Integration
    Data Modeling
    Dashboard
    SQL
    Data Analysis
    Apache Airflow
    BigQuery
    Python
  • $45 hourly

    • 5.0/5
    • (6 jobs)
    • Excellent working knowledge of Oracle RDBMS 9i\10\11g • Excellent working knowledge of Oracle RAC • Excellent working knowledge of Oracle Forms • Excellent working knowledge of SQL 2000\2005\2008\2012 • Experience working in other RDBMS databases like Mysql and Postgresql • Experience working with NOSQL • Experience using a scripting language to automate tasks • Excellent working knowledge of SQL High Availability features • Experience of performance and tuning optimizing SQL DB’s • Experience of monitoring and alerting tools for DB’s
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    Oracle APEX
    MySQL
    PostgreSQL
    Microsoft SQL Server Administration
    Oracle RAC
    Oracle Data Guard
    Oracle Database Administration
  • $45 hourly

    • 4.9/5
    • (22 jobs)
    I am a software (mostly Java) developer with more than 10 years of experience. I have started from developing fully-featured enterprise systems on Java and ended up building complex data processing frameworks that solve all kind of big-data world tasks. I am ready to create architecture for reliable and amazingly fast ETL process with further ad-hoc analytics and data visualization. Was working mainly in banking and telecommunication area. I am a fan of new architecture approaches like CQRS. Has good communication skills, high level of motivation, open-minded. Programming​ ​ languages: Java,​ ​​​JavaScript, Python Big​ ​ data​ ​ tools: Kafka, Hadoop,​ ​ Zookeeper,​ ​ Spark,​ ​ Storm, HDFS, OOzie Full-featured​ ​ web​ ​ frameworks: Spring​ ​ Boot Databases: PostgreSQL,​ ​ MySQL Data warehouses: Vertica
    vsuc_fltilesrefresh_TrophyIcon Vertica
    Data Science
    Amazon Web Services
    Amazon EC2
    AWS Lambda
    Spring Boot
    App Development
    DeFi
    ETL Pipeline
    Apache NiFi
    DApp Development
    Blockchain Development
    Apache Kafka
    Java
    Python
    Apache Flink
  • $75 hourly

    • 5.0/5
    • (7 jobs)
    Greetings! 🏆 Top 1% freelancer on Upwork with expert-vetted badge 🏅 5★ Service, 100% Customer Satisfaction, Guaranteed FAST & on-time delivery 🏆 Experience building Enterprise AI Data Solutions I am an Upwork expert-vetted professional, placing me among the top 1% of freelancers, based in Silicon Valley, San Francisco, California, Being Data Analyst and Business Intelligence Consultant with over 6 years of experience, I am highly capable of providing industrial data solutions. I also hold a Master's degree in computer science with a specialization in data science and minor in software development, I bring a wealth of knowledge and expertise to the table. With a deep understanding of data analysis, business intelligence, data visualization, machine learning, and data science, I have worked with a diverse range of industries. I am proficient in various tools and languages, specializing in: ✔️Microsoft PowerBI ✔️ Tableau ✔️ SSRS ✔️ R, Python, Scala, Spark, SQL, PSQL Programming ✔️Qliksense ✔️Qlikview I specialize in data extraction, cleansing, transformation, warehousing, modeling, and advanced analytics. Using statistical methods, I uncover valuable patterns, trends, and correlations for informed business decisions. As a detail-oriented problem-solver, I deliver high-quality results that exceed expectations. With strong communication skills, I effectively convey technical concepts to non-technical stakeholders. I excel both independently and as part of a team, going the extra mile for client satisfaction. Whether you seek to improve decision-making, understand customer behavior, or optimize marketing efforts, I offer my expertise. Contact me today to explore how I can contribute to your business's success.
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    Deep Learning
    Machine Learning
    Business Intelligence
    SQL Programming
    Data Science
    Data Analysis
    Computer Vision
    Dashboard
    Python
    Microsoft Power BI
    Microsoft Excel
    QlikView
    Tableau
    R
    Data Visualization
  • $45 hourly

    • 5.0/5
    • (8 jobs)
    Software developer specializing in the field of Big Data and Analytics. Experienced in the design and development of Data Warehouse and Data Lake architectures. My goal is to build cost-effective and reliable systems where client data is organized so it is usable, intuitive, and provides valuable insights to the business. Over the years I have been in contact with the most relevant platforms and software tools in the field. But more importantly, regardless of technology, I have gained knowledge of the principles and techniques of dimensional modeling which is the basis of moving towards data-oriented decision-making.
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    dbt
    Snowflake
    PySpark
    Amazon Redshift
    Big Data
    Data Warehousing
    Data Processing
    ETL Pipeline
    Data Engineering
    Data Lake
    Golang
    Amazon Web Services
    SQL
    Python
  • $60 hourly

    • 5.0/5
    • (2 jobs)
    Who am I? I’m Devendra, a Freelance Database Consultant, from India. I worked with IT giants, like Microsoft, as a full-time employee and managed petabyte-sized databases. Now, as a Freelance Database Consultant, I help SMEs with realistic database solutions. So, they can scale their business, with minimal operational cost. What do I do? I help my clients with end-to-end Data Management. * Data Architecture * Data Modeling * Database Administration * Data Integration and Interoperability * Data Analytics and Business Intelligence * Data Quality Management * Data Security * Data Governance and Master Data Management I get pleasure in solving database-tier issues. Where do I excel? * EnterpriseDB Certified – PostgreSQL 11 Associate Certification * HP Accredited Technical Professional – Vertica Big Data Solutions V1 * MongoDB Certified Developer Associate * MongoDB Certified DBA Associate * Microsoft Certified IT Professional: Database Developer 2008 * Microsoft Certified IT Professional: Database Administrator 2008 * Oracle Certified Professional – Oracle 9i Database Administrator * PRINCE2 Practitioner Certificate in Project Management * ITIL Foundation Certificate in IT Service Management What do my clients say? ``` Matthew Taylor, Chief Technology Officer at JustLogin Pte Ltd. I have worked with several "Database Experts" over the years and I can say now that I have multiple experiences, Dev is clearly a very experienced DBA. He provided an in-depth review of my entire DB stack and gave several recommendations on optimizations. At the end of the project we had a very detailed technical review session, deep diving into the different aspects of importance that needs to be looked at and improved. In the end we have a list of actionable items for us to work on ranging from DB Engine configuration changes, to SQL and application changes. He speaks clear English and is concise and to the point. We are about to take up a second project together. ``` ``` Ivan Rakic, Chief Executive Officer at Servikus LLC Devendra is an exceptional MSSQL DBA whose expertise and professionalism are truly unmatched. As a master of his craft, he possesses a profound understanding of database administration, consistently delivering outstanding results. For anyone in search of a top-notch MSSQL DBA, look no further than Devendra - a genuine wizard in the field. ``` ``` Surendra Maurya, Chief Technlogy Officer at HRMantra Software Pvt. Ltd. Devendra has great knowledge in SQL DBA activities and is very co-operative. He not only completed our project well in time but gone out of the way and helped us when our production server was down 3 days back. Keep up the good work Dev !!! ```
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    Data Modeling
    Data Science
    Database Architecture
    Data Analytics
    Database Programming
    Erwin
    Oracle
    Database Administration
    MongoDB
    PostgreSQL
    MySQL
    Microsoft SQL Server
  • $35 hourly

    • 4.9/5
    • (16 jobs)
    I am Big data engineer / Scala developer with 16 years of experience with the full software development lifecycle. My primary languages are Scala and Java, with experience in development frameworks such as Play, Akka, Slick. Database competencies include RDBMS (PostgreSQL, MySQL) and Big Data (Spark, Hadoop, HBase, Sqoop, Pig, Hive, Vertica, Kafka). Expertise in working throughout the projects full-lifecycle, had worked on every phase. Experience in Agile delivery of software using practices from Scrum, Kanban etc. I am very keen to learn new technologies and business knowledge. I accept challenges and can work independently without a close assistance. For employment prospective I am open to contract role and on negotiable rates. I can make assure my stability with company and available immediately. Buzzwords: Scala, Hadoop, HBase, Hive, Zookeper, Vertica, Redis, hand-made DB with offheap storage, Play Framework, Slick, Akka, Java SE, Java EE, Spring, EJB, Hibernate, MyBatis, Vaadin, Struts, JSTL, JSP. PostgreSQL, PL/SQL, MySql Javascript, Prototype, Dojo, ExtJs Jboss, Tomcat Intellij IDEA, Eclipse
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    Apache HBase
    Big Data
    Akka
    Java
    Scala
    Apache Spark
    Apache Hive
    PostgreSQL
    Apache Hadoop
  • $30 hourly

    • 5.0/5
    • (4 jobs)
    I hold a Masters' degree in Data Science and a MicroMasters in the same from UCSD. I worked as a Machine Learning Engineer for about three years in the Data Science Industry before starting my professional freelance career. I have worked with various high-profile multinational firms on various Data Science projects and have provided successful consultancies for different Big Data solutions. Some of the clients that I have worked with include: ✅ Mercy Hospitals - 4th largest Hospital Chain in the USA ✅ KPMG - One of the Big Four accounting organizations ✅ ComfortDelgro, Singapore (one of the largest taxi service providers in Asia) ✅ Telenor Pakistan - Second-largest cellular & digital services provider in Pakistan ✅ EZLink - The predominant public transit card in Singapore; and more Please see my Projects section for more insights into what the projects were. In addition to the practical work, I have also provided successful consultancies for various Big Data Solutions to a large Health Care Enterprise in the US with very positive Gartner reviews. I am very skilled in the following areas and tools in the domain of Data Science (which contains Machine Learning, Big data analytics, and Data Engineering as core fields): ⭐ Python (Basic to Advanced) ⭐ DS & ML Algorithms (Basic to Advanced), a few of them include: ---------✨ Regression (e.g. Linear Regression, Logistic Regression, Least-Squares, and more) ---------✨ Instance-based (e.g. K-Nearest Neighbor (KNN), Support Vector Machines (SVM)) ---------✨ Regularization Algorithms (e.g. Ridge Regression, LASSO, and more) ---------✨ Decision Tree Algorithms (e.g. CART, C5.0, Chi-squared, and more) ---------✨ Bayesian Algorithms (e.g. Naive Bayes, Multinomial Naive Bayes, and more) ---------✨ Clustering Algorithms (e.g K-Means, k-Medians, EM, and more) ---------✨ Association Rule Learning Algorithms (e.g. Apriori Algorithm) ---------✨ Artificial Neural Network Algorithms (e.g. Single Layer MLP) ---------✨ Deep Learning Algorithms (e.g. CNNs, RNNs, LSTMS, Auto-Encoders, and more) ---------✨ Ensemble Algorithms (e.g. Boosting, Bagging, AdaBoost, Random Forest, etc.) ---------✨ Dimensionality Reduction Algorithms (e.g. PCA, LDA, MDA, and more) ---------✨ And more... ⭐ Specialty subfields of Machine Learning ---------✨ Computer Vision (CV) - (e.g. Object Recognition, Pose-Estimation, etc.) ------------------🌠 Image Classification ------------------🌠 Object Detection ------------------🌠 Object Tracking ------------------🌠 Semantic Segmentation ------------------🌠 Instance Segmentation ------------------🌠 Image Reconstruction or Super Resolution *(See my research paper)* ------------------🌠 and more... ---------✨ Natural Language Processing (NLP) ------------------🌠 Tokenization ------------------🌠 Part of Speech (POS) Tagging ------------------🌠 Named Entity Recognition (NER) ------------------🌠 Sentiment Analysis ------------------🌠 Categorization and Classification ------------------🌠 Chatbots ------------------🌠 Keyword Spotting ------------------🌠 and many more... ---------✨ Recommender Systems ---------✨ Speech Processing *(See my Masters' Thesis)* ---------✨ And more... ⭐ Advanced Visualizations using ---------✨ Tableau ---------✨ Python - matplotlib, seaborn, ggplot, plotly, and more ---------✨ And more... ⭐ Pyspark for Distributed Analytics and Distributed Machine Learning ⭐ Data Lake on Apache Hadoop ⭐ Enterprise Data Warehouse on Apache Hive ⭐ ETL using ---------✨ Cron (Bash) ---------✨ Talend ---------✨ SLJM ⭐ CRUD operations using SQL ⭐ Data Modelling using SQL ⭐ Git I am also an experienced researcher and I provide corporate training in Artificial Intelligence (AI) from time to time. I love to work on managed services provided by Cloud Platforms such as GCP, Azure, and AWS. Big Data on the cloud is the next big thing. I also provide consultancy on Data Architectures/Data Analytics Platforms for companies to migrate towards the Cloud or build a Distributed Analytics Platform on-premise.
    vsuc_fltilesrefresh_TrophyIcon Vertica
    Apache Hadoop
    Apache Spark
    SQL
    Google Cloud Platform
    Data Visualization
    Data Engineering
    Azure
    Computer Vision
    Natural Language Processing
    Cloud Computing
    Data Science
    Big Data
    Machine Learning
  • $30 hourly

    • 5.0/5
    • (1 job)
    I'm Talend etl expect, where I have used different data bases and technologies as source and Target. Those are SQL,My SQL services,Oracle,Vertica data bases., and big data technologies like Hdfs , hive., Aws services like postgreSql,S3, Redshift, EC 2 Servers
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    Unix Shell
    Microsoft Power BI
    Amazon Redshift
    Talend Open Studio
    PySpark
    Apache Hive
    Talend Data Integration
    Python
    SQL
    PostgreSQL
    Scala
  • $120 hourly

    • 4.9/5
    • (101 jobs)
    MCSD, MCDBA, Java Certified Programmer with over 20 years’ experience developing successful web and Windows applications. I am a full-stack developer, primarily focusing on Microsoft.Net/SQL Server for backend development and React for UI development. I have secondary stack experience in PHP/MySQL, Node/MongoDB. I specialize in developing scalable backend services with Microsoft.Net, including bid data operations with Hadoop/Spark (Java/Scala) My domain expertise is building financial, accounting, and human resource systems – leveraging technology to provide business solutions. I work with clients to understand what they are trying to build – I understand the sales, I understand the marketing, and I understand the finance – and deliver the product they are requesting. Key Skills: VB.Net, C#, Microsoft SQL Server, PHP, MySQL, WPF, WCF, REST, jQuery, AJAX, AngularJS, Bootstrap
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    Azure DevOps
    Vue.js
    AWS Development
    Microsoft Azure
    Transact-SQL
    RESTful Architecture
    C#
    Microsoft SQL Server Administration
    Apache Spark
    ASP.NET
    MongoDB
    MySQL
    Apache Hadoop
    React
  • $90 hourly

    • 4.9/5
    • (37 jobs)
    Hi, I am a Retool Expert Developer with over 4 years of experience as I am giving my contribution to Retool dashboard development since 2019. I have developed 350+ Retool applications for US and UK clients. Basically, I am a senior software engineer in Ruby on Rails specializing in low-code development or no-code development solutions. I am one of the early birds who started working on Retool development as Retool come into existence in 2018 and I started working as Retool app developer in 2019. I am highly skilled in using Retool components to develop quick and efficient Retool application dashboards on time and within budget. I have integrated PostgreSQL, Google Sheets, DynamoDB, MongoDB, MySQL, BigQuery, Snowflake, SQL Server, AWS S3, Firebase, Firestore, GraphQL, Rest Api's, Maphub, SendGrid, Mailchimp or Mandrill, Facebook ads, Instagram APIs, and Slack in Retool. I would also love to integrate Stripe and Google ads if possible to get a chance. Furthermore, I have started working with Bubble.io as a Bubble expert developer. The platform's drag-and-drop interface and robust feature set make it a great tool for rapid prototyping and development. I am highly proficient in using Bubble.io to build complex data-driven applications or simple landing pages. As a Retool Expert and Bubble.io Developer, I am committed to delivering top-notch results for my clients. I am highly skilled in using both platforms to build custom web applications that are efficient, user-friendly, and meet my client’s expectations. I also know how to design databases so most of the time I also build database architecture for clients as well. With a strong focus on quality and attention to detail, I am the ideal candidate for any low-code development or no-code development project requiring expertise in following tools like Retool, Bubble, Adalo app developer, Appsmith, Xano developer, Zapier automation, Budibase, Stackerhq, Softr.io, Clickup, Weebly, and Wix. I love to listen to my client's requirements in detail and understand their business module before starting the job to deliver excellence. Please feel free to talk in person to resolve business problems to intellectual solutions. I am ready to provide solutions. Are you ready to give me problems? Regards, Salman Maqbool SSE Ruby on Rails Specialist in Retool and Bubble applications
    vsuc_fltilesrefresh_TrophyIcon Vertica
    ChatGPT
    JSON
    SQL
    Ruby on Rails
    MongoDB
    PostgreSQL
    API
    Ruby
    Data Visualization
    JavaScript
    Amazon Web Services
    Data Analysis
    NoSQL Database
    Firebase
    Database
  • $25 hourly

    • 4.1/5
    • (22 jobs)
    Oracle 12c Certified Professional, having almost 11 years experience in different areas of Information Technology in which last 9 years in Database Administration (Oracle / SQL Server/ DB2). Areas of workable knowledge includes Database Architecture, Database Programming, Database Modeling, Database Migration, High availability, Application Programming, Data Warehousing, , ASM, RAC, RMAN, ExaData, ExaLogic, Oracle Golden Gate, ORACLE APEX, Business Intelligence tools (BI Publisher etc), Software Engineering, Enterprise OS (Linux, UNIX, MS Windows Server) and Computer Hardware. Having core expertise in Database technologies along with good concepts of other areas of IT as well.
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    Database
    Oracle Data Guard
    Database Modeling
    Oracle WebLogic Server
    Unix Shell
    Big Data
    Oracle Database Administration
    Database Design
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