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  • $25 hourly
    • 5.0/5
    • (21 jobs)
    I am a Data Engineer with four years of experience in Big Data, specializing in constructing ETL pipelines with Airflow and Apache Spark, along with Apache Spark task performance optimization. I have contributed as a Data Engineer in esteemed organizations: 🏆Xiaomi - Fortune Global 500 company 🏆Shopee - $30B market cap, $10B+ revenue ⭐ Services I Provide: ✅ Big data processing using Spark Scala | Java, with proven expertise in optimizing Spark task performance. ✅ Building end-to-end data processing pipelines for seamless and efficient data flow. ✅ Expertise in data extraction and precision in ETL data transformation. ✅ Implementation of data cleaning techniques to ensure high data quality. ⭐ Key Skills: ✅ Big data - Apache Spark, Flink, Hadoop, Kafka, HDFS, Hive, Airflow, Druid ✅ NoSQL - HBase, Redis ✅ Platform - Data Warehousing, Data lake ✅ Programming Languages - Java, Scala, Python, SQL ⭐ Why choose me over other freelancers: ✅ Over-delivery: This is the core of my work as a freelancer. I focus on exceeding expectations, a trait acknowledged during my tenure at Xiaomi. ✅ Responsiveness: I prioritize clear and prompt communication, ensuring clients are informed and engaged throughout the project lifecycle. ✅ Kindness: I approach every facet of my work with kindness, treating everyone with respect, understanding situations with empathy, and genuinely aiming to improve my client's situations.
    Featured Skill Big Data
    Data Cleaning
    Data Extraction
    Data Engineering
    SQL
    ETL Pipeline
    Apache Kafka
    Apache Spark
    Apache Hadoop
    Java
    Hive
    Apache Flink
    Scala
    Python
  • $100 hourly
    • 0.0/5
    • (4 jobs)
    With great passion of solving reality problems, and of course Post-Graduate Degrees in Applied Mathematics and Computer Science, also rich industry experiences, I'm here as a full-time freelancer looking forward to help you. Hope my support will solve your difficulties in Mathematical and Programming areas, or help building scientific system to boost your business. Highlight skills in provision are listed below: -- Data collection and data preprocessing. -- Machine/Deep learning algorithm design. -- Machine/Deep learning system design and implementation. -- Statistical analysis on various types of data. -- Econometric analysis on various types of data. -- Solving computational algebra problems. -- Solving (non-)convex optimization problems. Currently, I work with the following languages and softwares: -- C, C++, Java, Python, R (languages). -- R, Python, Java, C++, Caffe(2), Tensorflow, Weka (for machine/deep learning). -- Matlab, Mathematica, Marple (for Mathematics). -- Excel, SPSS, Stata, SAS, EViews, MLwiN (for statistics and econometrics). -- Matlab, lingo/lindo, etc (for optimization). When the project is in progress, I will provide: -- At least daily update for keeping you informed about the project status. -- Sufficient communication for identifying and meeting your requirements. -- Latest version of the desired production (data/code/report, etc.). -- Online support of at least 8hrs/day for your questions. I'd love to hear from you about the way you want things to be done, please feel free to contact with me if my skills is at your requirement.
    Featured Skill Big Data
    Natural Language Processing
    Java
    Machine Learning
    Python
    Data Science
    Computer Vision
    Statistics
    R
    Mathematics
    C
    C++
  • $25 hourly
    • 5.0/5
    • (5 jobs)
    I’m a developer with experience in NLP、LLM 、 CV and recommendation system and bigdata. 1. I’m experienced in RAG、langchain、deepspeed、llm、 object dection、video generation 2.I’m experienced in hadoop/hdfs/yarn/hbase/redis/kafka/hive, 2. I’m experienced in tensorflow/kubeflow/tf serving/trtion serving 3.I’m experienced in k8s/docker/html/jqurey/spring boot/mybatis 4.I’m experienced in aws componet, such as emr/ec2/s3/code deploy
    Featured Skill Big Data
    jQuery
    LangChain
    LLM Prompt Engineering
    PySpark
    AWS Application
    Artificial Intelligence
    Apache Hadoop
    Spring Boot
    Kubernetes
    Apache Flink
    Java
    TensorFlow
    Apache Spark
  • $80 hourly
    • 5.0/5
    • (1 job)
    Full Stack Development: Nuxt, Vue, TypeScript, TailwindCSS, Nestjs, Express.js, Node.js, MongoDB, PostgreSql, etc. Certifications AWS Certified Data Analytics - Specialty AWS Solutions Architect – Associate Microsoft Specialist: Architecting Microsoft Azure Solutions Microsoft Specialist: Developing Microsoft Azure Solutions Microsoft Specialist: Programming in C# Microsoft Certified Solutions Developer: Web Applications
    Featured Skill Big Data
    Hive
    PaaS
    Amazon Web Services
    Snowflake
    Microsoft Azure
    Apache Spark
    Apache Hadoop
    Web3
    MongoDB
    Node.js
    Tailwind CSS
    Next.js
    React
    ExpressJS
    Solidity
  • $40 hourly
    • 5.0/5
    • (7 jobs)
    Data Analyst and Social Science Researcher In a nutshell: Empirical insights, not just charts. I specialize in delivering academia-standard research and data analytics products to business and non-profit owners in a compelling yet empirical way. Data is wonderful, but not all of them are useful, given a specific target audience. My work lies in the middle ground between data visualization and academic research. It provides you with sufficient data analysis and concise theoretical evidence to back it up. - 2 years of experience in Data manipulation, ETL, visualization, and Tableau dashboard building. - Expert in storytelling, creative presentation, and visual designs. - Familiar with Pandas, Numpy, and Gurobipy packages in Python. - Experienced planner & presenter for data consulting projects. - Knowledge of Artificial Intelligence & Machine Learning, and data ethics in AI & ML applications.
    Featured Skill Big Data
    Spreadsheet Software
    pandas
    Analytics
    Optimization Modeling
    Natural Language Processing
    NumPy
    Machine Learning
    Analytical Presentation
    SAS
    Python
    Tableau
    Data Analysis
    Microsoft Excel
  • $55 hourly
    • 0.0/5
    • (0 jobs)
    I'm a developer with experience in Big Data and backend. Whether you have doubts to win work or such problems - I can help!
    Featured Skill Big Data
    Search Engine Indexing Optimization
    Apache Hadoop
    Hive
    Google Cloud Platform
    Apache Spark
  • $50 hourly
    • 0.0/5
    • (0 jobs)
    I am an experienced algorithm engineer with over 8 years of experience in machine learning and deep learning. I am skilled in using big data components like Hive and Spark, and programming languages like Python, Java, and SQL. I have worked on projects including: - Optimizing ranking models at Tencent to improve CTR by 22% - Leading live broadcast recommendation project at Lizhi FM, increasing new user CTR by 22% - Identifying threats like DOS attacks and SQL injections at Bluedon, achieving 96% recall rate I am passionate about staying updated on the latest machine learning and deep learning algorithms. I enjoy technical exchanges and sharing my learnings through blogs. With strong communication and teamwork abilities, I can lead projects smoothly from start to finish. If you need someone experienced in optimizing models and algorithms to achieve the best results, I'm your person!
    Featured Skill Big Data
    Apache Hive
    SEO Writing
    Writing
    Artificial Intelligence
    AI Content Creation
    AI Chatbot
    Apache Spark
    Machine Learning
  • $40 hourly
    • 0.0/5
    • (2 jobs)
    I’m experienced in market research, business intelligence, strategy field for ICT industry. Whether you’re trying to do a research, or consulting in some field,or create a new business, I can help. 1.10 years of working experience in the ICT industry, IOT,AI,Cloud,Smart cars and etc. 2. Held positions related to strategic planning in well-known companies such as IDC and Dell, with rich experience in business intelligence. 3.Proficient in data analysis and market research methodology, able to provide strategic planning and operation management decision support for enterprises through data analysis and market research.
    Featured Skill Big Data
    Business Intelligence
    Strategic Planning
    Digital Strategy
    Product Strategy
    Artificial Intelligence
    Market Analysis
    Go-to-Market Strategy
    Branding & Marketing
  • $50 hourly
    • 0.0/5
    • (2 jobs)
    I'm a fullstack developer with many experiences in building websites / big-data applications / cluster maintenances. Have the ability to do demand analysis / architecture design / project implementation step by step. Tell me what you need, I'll do my best to help you. * Spring / Typescript / React / Vue / PHP / Android / iOS / Bigdata(Hadoop / Spark) * Let's keep in touch. Nothing can not be solved with close communication.
    Featured Skill Big Data
    TypeScript
    Python
    Apache Hadoop
    Linux
    Tableau
    Spring Boot
    Vue.js
    React
    Apache Spark
    Java
    Cloud Application
    Front-End Development
    Back-End Development
  • $40 hourly
    • 0.0/5
    • (0 jobs)
    - Proficient in mainstream programming languages such as Java, Python, and Golang. - Familiar with mainstream Java frameworks, including Spring Cloud, Netty, and MyBatis. - Experienced with Hadoop, Flink, Kafka, Spark, Hive, HBase, and Zookeeper, encompassing the distributed systems within the big data ecosystem. - Proficient in Linux operating systems and Docker ecosystem, including containerization technologies. - Proven experience in implementing large-scale, multi-module microservice architecture for the Yonghui Data Platform. - Successfully designed and implemented the Yonghui low-code real-time processing platform, encompassing over 700 jobs. - Multiple successful implementations of 0-1 data platforms (cdh/cdp) and data warehouse architectures. - Leveraged DataOps + DevOps practices to develop an intelligent vehicle pricing product. - Enthusiastic and optimistic individual with a positive attitude towards work. Dedicated, detail-oriented, and possesses excellent communication skills. Passionate about technology and eager to embrace new challenges and share knowledge.
    Featured Skill Big Data
    Linux
    Docker
    SQL
    MySQL
    Apache Spark
    Apache Flink
    Spring Cloud
  • $60 hourly
    • 0.0/5
    • (1 job)
    I am a current PhD student in marketing and am interested in the marketing-finance domain. I have both industry experience in consulting and solid academic training in business, so I am happy to take on tasks that can utilize my skill sets.
    Featured Skill Big Data
    Scripting
    Data Analytics
    Analytics
    R
  • $11 hourly
    • 5.0/5
    • (1 job)
    Dear Customer: Hello! I am Wang Tiantian, a college student who focuses on computer work and has 3 years of work experience. I am very confident that I can provide you with quality service. I am good at using computers to complete work, and I have completed many similar projects before and received good feedback from customers. Through these experiences and the knowledge I learned in school, I am proficient in short video editing, e-commerce operations, tiktok live broadcast, etc. And I am able to deliver work efficiently and with high quality within strict deadlines. My working style focuses on communication and details, ensuring that every step of the project meets your expectations. I always regard customer satisfaction as my primary goal and am willing to continuously optimize my work based on your feedback. If you are looking for an expert in computer-related work who can reliably complete your project, please feel free to contact me. I look forward to the opportunity to work with you to bring you the expected results. Thank you for taking the time to consider my application, and I look forward to your reply! Thank you!
    Featured Skill Big Data
    Short Video
    Marketing
    Content Creation
    Microsoft Office
    Data Analysis
    Data Entry
    Live Streaming Setup
    WordPress e-Commerce
  • $60 hourly
    • 0.0/5
    • (0 jobs)
    He has ten years of experience in project development management, four years of experience in project architecture and technical improvement, and five years of experience in large-scale project design, development and management. Familiar with the whole process of project management, control the project scope, schedule, quality and cost, and can identify and deal with project delivery risks in time.
    Featured Skill Big Data
    J2EE
    Linux
    App Development
    API Development
    Web Development
    Java
    Computing & Networking
    Architecture
    DevOps
    Computer Network
  • $35 hourly
    • 0.0/5
    • (0 jobs)
    5+ year Experienced Strategic Consultant I help businesses solve growth challenges with data-driven strategies. Whether you're entering new markets, optimizing operations, or transforming business models, I deliver actionable solutions. ● Expertise in Porter’s Five Forces, SWOT Analysis, and ROI Forecasting ● Proficient in Excel, Tableau, Python, and Market Simulation Models ● Full-cycle project leadership from diagnosis to implementation ● ​​Industries served​​: Manufacturing | Healthcare | Education | Consumer Goods ● ​​Track record​​: 50+ projects delivered with 92% client retention Regular alignment with stakeholders is key to success – let’s keep every step transparent.
    Featured Skill Big Data
    Analytical Presentation
    Pricing Strategy Consulting
    Management Consulting
    Digital Transformation
    Cost Control
    Market Segmentation Research
    Market Analysis
    Target Market Research
    Corporate Strategy
    Marketing Strategy
    Brand Strategy
    Business Strategy
    Product Strategy
    Growth Strategy
  • $100 hourly
    • 0.0/5
    • (0 jobs)
    I’m an experienced AI and software engineer with 10+ years of hands-on expertise in enterprise AI solutions, automation, and big data platforms. I’ve led digital transformation projects for both Fortune 500 companies and fast-growing startups, specializing in workflow automation, data analytics, and AI-driven business tools. My background spans end-to-end product development, from Python automation scripts to scalable cloud architectures (Spark, Hadoop, Kubernetes). I’m passionate about making complex technology accessible—whether through designing intuitive tools, delivering technical training, or bridging the gap between business and engineering. If you need a reliable partner to build, optimize, or explain your next tech solution, let’s connect!
    Featured Skill Big Data
    Python
    Data Analysis
    Machine Learning Model
    Machine Learning
    Artificial Intelligence
  • $40 hourly
    • 0.0/5
    • (0 jobs)
    Professional Summary Results-driven software professional with 20+ years of experience in enterprise system development and big data analytics. Strong expertise in designing scalable solutions using Java and Python, with a focus on optimizing business processes and data-driven decision-making. Key Strengths: ✔ Enterprise Systems: Proven track record in developing high-performance, secure enterprise applications (e.g., ERP, CRM, middleware). ✔ Big Data & Analytics: Experience with data pipelines, ETL processes, and tools like Spark, Hadoop, and SQL/NoSQL databases. ✔ Backend Development: Proficient in Java (Spring/Spring Boot) and Python (Django, Pandas, NumPy) for robust system architecture. ✔ Full project management from start to finish Passionate about solving complex business challenges through technology innovation and data insights.
    Featured Skill Big Data
    AI Agent Development
    Data Access Layer
    Data Annotation
    Agile Project Management
    Spring Boot
    Java
    Python
  • $45 hourly
    • 0.0/5
    • (0 jobs)
    As a Full - Stack Developer with a Bachelor’s in Computer Science & Technology from Taiyuan University of Technology (2011 - 2015), I specialize in delivering end - to - end web and mobile solutions. At Xi'an Yunke Information Technology Co., Ltd., I’ve led projects for NA/EU clients, leveraging Java, Node.js, and database expertise (SQL/NoSQL). - 7+ years in IT, skilled in full - stack dev, database optimization, and UI/UX integration ​ - Managed 8+ international projects with 98% on - time delivery and 4.8/5 client satisfaction ​ - Committed to clear communication and tailored tech solutions. Let’s build impactful software together!
    Featured Skill Big Data
    Spring Cloud
    Web Development
    Web Design
    Hive
    Redis
    Data Analysis
    Elasticsearch
    Web & Mobile Design Consultation
    App Development
    Node.js
    UI/UX Prototyping
    Java
    Database Management
    Database
  • $15 hourly
    • 5.0/5
    • (0 jobs)
    Summary 17+ years experience in software testing industry, proficient in software testing theory and the whole life cycle of DevOps; proficient in product patches sustaining and delivery process; have deep understanding about automation for web UI applications and API testing; willing to learn new technology and improve the product quality, have high passion in automation development. Familiar with different OS and different types of database management. Good at analyzing problems and solving problems. Years of working experience in foreign company, and the product covered finance and bank industry, proficient in English. Years of experience in test management. Easy to get along with.
    Featured Skill Big Data
    GitLab
    Selenium WebDriver
    Automation
    Test Automation
    Software Testing
    API
    Agile Software Development
    Apache JMeter
    Static Testing
    Test Results & Analysis
  • $20 hourly
    • 0.0/5
    • (0 jobs)
    I’m a Python Engineer specialized in developing scalable solutions for data processing, web crawling, and backend systems. With a focus on efficiency and innovation, I deliver robust data-driven projects from conception to deployment. Expertise in: Python, Scrapy, Big Data, OpenCV, TensorFlow, MongoDB, MySQL, Metabase. Project Highlights: Real-time data processing systems handling tens of millions of records, high-concurrency content recommendation systems, and advanced web crawling. Strengths: Machine learning, computer vision, data analysis, and developing distributed systems. Commitment: I prioritize clear and regular communication to ensure project success and client satisfaction. Let’s connect to explore how I can bring value to your team.
    Featured Skill Big Data
    Cython
    NumPy
    pandas
    Django
    Scrapy
    Flask
    Python
    Web Crawling
  • $100 hourly
    • 0.0/5
    • (0 jobs)
    guoweiliang.com Resourceful and driven NLP expert with a pivotal role in multiple patented innovations. Multilingual and highly skilled in data science. Successfully passed CFA Level 1, embodying a blend of technical proficiency and financial acumen. Proactive with a growth mindset and excellent communication, attention to detail and problem-solving skills. Global experience
    Featured Skill Big Data
    Computer Vision
    Artificial Intelligence
    Finance
    Python
    Large Language Model
    Natural Language Processing
  • $10 hourly
    • 0.0/5
    • (0 jobs)
    Technical Expertise:​​ ✔ ​​Java Web Development​​ – Spring Boot, RESTful APIs ✔ ​​Blockchain​​ –PBFT, WASM, Ethereum ✔ ​​Microservices​​ – Docker, Spring Cloud ✔ ​​Big Data​​ – Hadoop, Spark, Kafka ✔ ​​AI​​ – LLM, LoRA ​​Project Experience:​​ ​​PBFT based Consortium Blockchain​ System​​ (WASM, Solidity) Microservices Platform​​ (Spring Cloud, Docker) ​​High-Concurrency E-Commerce System​​ (Java, Redis, Elasticsearch)
    Featured Skill Big Data
    AI Development
    Product Development
    Web Development
    Web Application
    Blockchain Architecture
  • $30 hourly
    • 0.0/5
    • (0 jobs)
    I am a seasoned big data developer with extensive experience in building enterprise-level big data platforms. I specialize in data integration, Apache Spark, data lakes, and data analytics. If you have any needs in these areas, I can provide strong support and solutions.
    Featured Skill Big Data
    Apache Spark
    Data Engineering
    Kubernetes
    Data Access Layer
  • $3 hourly
    • 0.0/5
    • (0 jobs)
    I’m a data engineer with extensive experience in developing and deploying data solutions for small and medium-sized businesses. Whether you need to optimize data workflows, implement data visualizations, or build data-driven applications, I can help. Skills and Expertise: Proficient in various programming languages and tools, including Python, SQL, Spark, and Hadoop Knowledgeable in data modeling, ETL processes, and data warehouse design and implementation Capable of handling big data processing and analysis In-depth understanding of machine learning algorithms and data mining techniques Project Management: Full project management from requirements analysis and solution design to implementation and maintenance Ensure timely delivery of projects that meet the expected outcomes Communication and Collaboration: Regular communication is important to me to ensure smooth project progress Maintain a clear feedback mechanism to continuously improve and optimize solutions Let’s keep in touch and drive the success of your projects together.
    Featured Skill Big Data
    Data Entry
    Data Engineering
  • $40 hourly
    • 0.0/5
    • (0 jobs)
    1. Proficient in Java, Python, Scala, and SQL 2. Deeply involved in and developed big data operations and typical backend services 3. Have experience in multiple software project development and management 4. Have experience in financial technology related projects
    Featured Skill Big Data
    Web Development
    Web Application
    Artificial Intelligence
  • $50 hourly
    • 0.0/5
    • (0 jobs)
    Hi! With 8 years as a Big Data Product Manager, I'm great at writing detailed requirement docs and building prototypes. I'm also a strong communicator, ensuring smooth collaboration between teams.​ I'm detail-oriented, and as a home renovation & DIY blogger, I offer hands-on DIY services. Plus, I provide accurate Chinese-English translation.​ With a GIS major, I’m skilled in map-related tasks like data analysis and visualization. Let’s work together on your projects!
    Featured Skill Big Data
    GIS
    ArcGIS
    Translation
    Decorative Art
    Problem Solving
    Communication Skills
    Product Design
  • $60 hourly
    • 0.0/5
    • (0 jobs)
    I am a software development engineer, mainly engaged in big data platform related development work, such as data integration platform, I am a committer of Apache Seatunnel. I can use Java, Go and other languages ​​for development.
    Featured Skill Big Data
    Golang
    Java
    Git
    Spring Boot
    Apache Flink
    Apache Hadoop
    SQL
    Kubernetes
    Data Ingestion
    Product Development
  • $15 hourly
    • 0.0/5
    • (0 jobs)
    As a Big Data Engineer at a game company, I'm responsible for managing and analyzing large volumes of game data. My role revolves around AWS technologies, particularly Amazon Redshift and Amazon EMR, enabling us to gain valuable insights from our gaming data. My daily tasks include data collection, integration, and preprocessing. I collaborate with teams across departments to ensure we capture all necessary data. This often involves setting up data pipelines for automated transfers into our storage systems. Ensuring data accuracy is a critical part of this process. Managing our data warehouse and data lake is another vital aspect of my role. Amazon Redshift serves as our data warehousing solution, and I oversee its performance and availability. We also utilize cloud storage solutions for building a data lake, providing flexibility in data storage and access. A significant portion of my work involves data analysis. Using open-source big data tools like Apache Spark, I identify game trends, analyze user behavior patterns, and uncover opportunities for improvement. Our aim is to enhance the gaming experience through data-driven insights. Real-time data processing is crucial in gaming. I construct real-time data processing pipelines for monitoring game performance and taking prompt actions. I also focus on performance optimization, ensuring efficient data processing workflows and query performance to avoid delays. Data security and compliance are paramount. We safeguard game data and adhere to relevant regulations. Collaboration with data scientists and analysts is essential for data-driven decision-making and game improvements. In summary, my role significantly impacts our game company. Through AWS and open-source tools, I enhance the gaming experience, improve game content, and engage users, ultimately boosting competitiveness and profitability. I take pride in contributing to the gaming industry's growth in this challenging yet rewarding role.
    Featured Skill Big Data
    Apache Flink
    SQL
    Apache Hive
    Apache Kafka
    Apache Hadoop
    Python
    Java
    Apache Spark
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