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Rating is 4.8 out of 5.
4.8/5
based on 216 client reviews
  2. Development & IT Talent
  3. Full Stack Developers
  4. (Current) Apache Cassandra Developers
  • $25 hourly

    • 4.9/5
    • (31 jobs)
    I’ve 12+ years of full-stack development experience. I have extensive experience in both front end development as well as back-end development. Here's my area of expertise: Technology Platforms ★ LLM Integration ★ LangChain ★ Custom PHP ★ Python ★ WordPress ★ WooCommerce ★ Laravel ★ NodeJS ★ CodeIgniter ★ Yii ★ PHP ★ ChatGPT Database ★ MySQL ★ MongoDB ★ Cassandra ★ HBase ★ Oracle Front End Technologies that I master in: ★ HTML5 ★ CSS ★ JavaScript ★ Angular/ AngularJS ★ ReactJS ★ VueJS Functionalities: ★ Booking and Payment ★ Subscription and Membership ★ Payment Gateway Integration ★ Shopping cart customisation ★ Inventory management and Inventory Automation ★ Flight Status, Flight Booking and Flight Tracking ★ Product synchronisation using RESTful API services ★ Payout Management ★ Chatbot Integration ★ Stock Market Data ★ IDX Real Estate Property Listing ★ WooCommerce based plugin development ★ WooCommerce customisation I am well-versed with RESTful API services (API integration), data scraping using Python and developing custom forms which are dynamic. I have worked with the following API: ★ ChatGPT API ★ Claude API ★ LLM API ★ Roadie API ★ Ingram API ★ Synnex API ★ Apple Weather Kit API ★ Stripe API ★ Plaid API ★ ChatGPT API ★ Assistants API ★ OpenAI API ★ Coupons ★ Affiliation My sole focus is to deliver projects as per the client’s expectations and find my success.
    vsuc_fltilesrefresh_TrophyIcon Apache Cassandra
    API
    WordPress Development
    Shipping Plugin
    WooCommerce
    Django
    TypeScript
    NGINX
    Bootstrap
    Angular
    WordPress
    Python
    PHP
  • $35 hourly

    • 5.0/5
    • (26 jobs)
    Seasoned data engineer with over 11 years of experience in building sophisticated and reliable ETL applications using Big Data and cloud stacks (Azure and AWS). TOP RATED PLUS . Collaborated with over 20 clients, accumulating more than 2000 hours on Upwork. 🏆 Expert in creating robust, scalable and cost-effective solutions using Big Data technologies for past 9 years. 🏆 The main areas of expertise are: 📍 Big data - Apache Spark, Spark Streaming, Hadoop, Kafka, Kafka Streams, HDFS, Hive, Solr, Airflow, Sqoop, NiFi, Flink 📍 AWS Cloud Services - AWS S3, AWS EC2, AWS Glue, AWS RedShift, AWS SQS, AWS RDS, AWS EMR 📍 Azure Cloud Services - Azure Data Factory, Azure Databricks, Azure HDInsights, Azure SQL 📍 Google Cloud Services - GCP DataProc 📍 Search Engine - Apache Solr 📍 NoSQL - HBase, Cassandra, MongoDB 📍 Platform - Data Warehousing, Data lake 📍 Visualization - Power BI 📍 Distributions - Cloudera 📍 DevOps - Jenkins 📍 Accelerators - Data Quality, Data Curation, Data Catalog
    vsuc_fltilesrefresh_TrophyIcon Apache Cassandra
    SQL
    AWS Glue
    PySpark
    ETL Pipeline
    Apache Hive
    Apache NiFi
    Apache Kafka
    Big Data
    Apache Hadoop
    Scala
    Apache Spark
  • $40 hourly

    • 4.8/5
    • (65 jobs)
    I'm Linux DevOps and Cloud architect since 2002. Most of my professional career is with design, setup and DevOps of medium and high loaded web farms, NoSQL databases which are time-critical and require 24/7/365 uptime. During the last several years, I'm concentrated on architect & administration of Hadoop ecosystem, Big-Data systems (Cassandra, ElasticSearch, Riak ...) and distributed storage Ceph. I have big experience with a variety of web servers and load balancers (Apache, Nginx, HAProxy, Tomcat, Jetty etc .. ) as well as with cloud services such as AWS, Azure and GCP.
    vsuc_fltilesrefresh_TrophyIcon Apache Cassandra
    Big Data
    Apache HBase
    Linux System Administration
    Golang
    Nomad
    CI/CD Platform
    Apache Hadoop
    Consul
    Kubernetes
    Elasticsearch
    Google Cloud Platform
    Python
    Amazon Web Services
    Linux
  • $55 hourly

    • 4.6/5
    • (20 jobs)
    Short story: Seasoned expert in the fields of software architecture. Passionate about Big Data, scalable, responsible, reactive and fault tolerance systems. Long story: - highly experienced in enterprise/web-scale software design and enterprise application integration; - experienced in Big Data: traditional data-warehousing and cutting-edge noSQL/noETL; - experienced micro-service system design; - proficient in distributed and concurrent programming; - advanced in Scala / Typesafe Stack; - advanced in Golang; - advanced in core Java / countless mainstream frameworks;
    vsuc_fltilesrefresh_TrophyIcon Apache Cassandra
    ELK Stack
    Prometheus
    Kubernetes
    Golang
    PostgreSQL Programming
    MongoDB
    Elasticsearch
  • $24 hourly

    • 5.0/5
    • (2 jobs)
    🏅 Top Rated Plus 🏆 Top 10% in Full Stack Development ⌚ 1900+ hours on Upwork 💯 100% Job Success Score 👨‍💻 5+ Years of Professional Experience Why choose me? 🤔 ✅ Full Stack Development Expertise: As a highly-skilled Senior Full Stack Web developer, I possess a diverse skill set encompassing HTML, CSS, JavaScript, TypeScript, Microservices, REST APIs, and Unit Testing. My proficiency in Node.js, React, Next.js, NoSQL, MongoDB, Redis, Jest, Docker, and other cutting-edge tools sets me apart as a versatile developer. ✅ Exceptional Track Record: With a Job Success Score of 100% and the prestigious Top Rated Plus badge ✅ Client Satisfaction: I prioritize client satisfaction and tailor my approach to meet your specific needs ✅ Effective Communication: With clear and prompt communication, I ensure that you are always kept informed about the project's progress and milestones. ✅ Collaborative and Empathic: I thrive in collaborative environments and adapt seamlessly to diverse teams. My empathic nature fosters open communication, making it easier to understand and meet your project requirements. By choosing me, you gain access to a top-rated and reliable Senior Full Stack developer who can elevate your business with seamless user experiences and a strong online presence. Let's bring your vision to life together! Feel free to DM me to discuss your project and embark on a successful partnership 🙂 #React #TopRatedFreelancer #TopRatedPlusFreelancer #SeniorDeveloper #WebDeveloper #Node #ReactJS #JavaScript #JavaScript developer #GolangDeveloper #MERN #MongoDB #FullStackDeveloper #WebExpert #CodingNinja #WebDevelopment #CustomWebSolutions #ScalableApplications #InnovativeWebDesign #EfficientCoding #ProblemSolver #FunLovingDeveloper #WebDeveloper #FullStackDeveloper #Node #Express #Jest #UnitTesting #React.js #JavaScript #CODE #Codebreaker #BugFixer
    vsuc_fltilesrefresh_TrophyIcon Apache Cassandra
    Front-End Development
    Full-Stack Development
    Web Design
    Web Development
    CSS
    Next.js
    Node.js
    React
    NodeJS Framework
    JavaScript
    PostgreSQL
    Git
    API
    MongoDB
    TypeScript
  • $35 hourly

    • 5.0/5
    • (75 jobs)
    I'm a dynamic data expert with a proven ability to deliver short or long-term projects in data engineering, data warehousing and business intelligence realm. My passion is to partner with my clients to deliver top-notch, scalable data solutions to provide immediate and lasting value. I specialise in the following data solutions: ✔️ Data strategy advisory & technology selection/recommendation ✔️ Building data warehouses using modern cloud platforms and technologies ✔️ Creating and automating data pipelines, real-time streaming & ETL processes ✔️ Data Cleaning and Processing. ✔️ Data Migration (Heterogenous and Homogenous) Some of the technologies I most frequently work with are: ☁️ Cloud: GCP, AWS & Azure 👨‍💻 Databases: BigQuery, Google Cloud SQL, SQL Server, Snowflake, PostgreSQL, MySQL, S3, Google Cloud Storage, Azure BLOB Store. ⚙️ Data Integration/ETL: Matillion ETL for Snowflake/BigQuery, Apache Airflow( Google Cloud Composer, AWS MWAA ), Azure Data Factory, Azure Logic Apps and DBT. 🔑 Scripting - Python for API Integrations and Data Processing. 🤖 Serverless Solutions - Google Cloud Functions, Lambda Functions and Azure Functions. 📊 Dashboard Reporting - Microsoft Power BI, Apache Superset. 🛠 Others - API Integrations in Python, Process Automation and Much More. =What my clients say about me== ------------------------------------------------------ "Waqar is very clued up and he thinks outside the box. He is always looking for ways to implement the solution efficiently and cost-effectively. His communication skills are excellent. He is willing to go the extra mile. He has been a pleasure to work with. I will be working with him in the future." ⭐⭐⭐⭐⭐ ------------------------------------------------------ "Waqar has expert-level knowledge of Google Cloud and knows how to make cloud technologies work effectively for the marketing domain." ⭐⭐⭐⭐⭐ ------------------------------------------------------ I am highly attentive to detail, organised, efficient, and responsive. Let's get to work! 💪
    vsuc_fltilesrefresh_TrophyIcon Apache Cassandra
    PostgreSQL
    Data Warehousing & ETL Software
    Microsoft Azure
    API Integration
    Microsoft SQL Server
    Microsoft Power BI
    Google Cloud Platform
    Snowflake
    BigQuery
    Databricks Platform
    Apache Superset
    SQL
    Apache Airflow
    Python
  • $25 hourly

    • 5.0/5
    • (18 jobs)
    As an experienced software developer with a strong focus on AI applications, I specialize in building robust solutions using cutting-edge technologies such as Large Language Models (LLMs) and Computer Vision. My skill set includes developing sophisticated applications using Next.js for web development and Kivy for creating versatile Python-based applications. My expertise spans AI applications, leveraging LLMs and Computer Vision to create intelligent, user-interactive solutions. I specialize in crafting modern, responsive web applications using Next.js and developing high-performance, multi-platform applications with Kivy and Python.
    vsuc_fltilesrefresh_TrophyIcon Apache Cassandra
    AI App Development
    AI Image Generation
    Prompt Engineering
    LLM Prompt
    Chatbot Development
    GPT-4
    AI Agent Development
    Next.js
    OCR Algorithm
    Artificial Intelligence
    LLM Prompt Engineering
    Raspberry Pi
    Object Detection & Tracking
    Computer Vision
    Chatbot
  • $20 hourly

    • 4.9/5
    • (106 jobs)
    🚀 Welcome to My Profile! With over 15 years of dedicated experience in the software development industry, I bring a deep understanding of creating robust, scalable solutions across diverse domains. My journey spans from pioneering projects with Angular, Node.js, NestJS, React, and Next.js to integrating cutting-edge Blockchain technology for secure, decentralized applications. 🔹 Why Choose Me? 🚀 Proven Expertise: With over 15 years of dedicated experience in software development, I bring a wealth of knowledge in building robust applications using Angular, Node.js, NestJS, React, and Next.js. My career spans various industries, mastering the art of crafting solutions that meet diverse business needs. 🔗 Blockchain Mastery: Proficient in leveraging Blockchain technology to create secure, decentralized applications, and implementing smart contracts. I ensure your projects benefit from the latest advancements in decentralized systems. 💡 Full-Stack Prowess: I excel in both frontend and backend technologies, utilizing Angular, React, Node.js, NestJS, and Next.js to deliver seamless, efficient, and scalable applications tailored to your requirements. 🧠 AI and ML Expertise: Skilled in integrating artificial intelligence and machine learning models to enhance application functionality, providing intelligent solutions that elevate user experiences. 🔧 Technical Stack: 🎯 Frontend: Angular, React, Next.js, TypeScript 🎯 Backend: Node.js, NestJS, Express.js 🎯 Blockchain: Ethereum, Smart Contracts, Solidity, Web3.js 🎯 Database: MongoDB, PostgreSQL, MySQL 🎯 APIs: RESTful, GraphQL, Apollo 🎯 AI/ML: TensorFlow, Keras, PyTorch, scikit-learn 📈 What Sets Me Apart: ⏩ Innovative Solutions: I harness cutting-edge technologies to build durable and future-proof solutions. ⏩ Attention to Detail: Ensuring high-quality, error-free applications with meticulous care. ⏩ Fast & Efficient: Commitment to delivering projects on time and within budget constraints. ⏩ Client Success Focused: Your satisfaction and success are paramount. I strive to exceed expectations at every stage of our collaboration. 🔹 Services I Offer: 🔐 Blockchain Development: Building secure and transparent decentralized applications. ⚙️ Full-Stack Development: Comprehensive frontend to backend development services. 🔗 API Integration: Seamless integration of RESTful and GraphQL APIs. 💾 Database Design: Creating efficient and scalable database solutions. 💡 Custom Solutions: Tailored to meet your unique business needs and goals. 🌟 Let's Bring Your Ideas to Life! Contact me today to discuss how I can contribute to the success and growth of your business. 🌟
    vsuc_fltilesrefresh_TrophyIcon Apache Cassandra
    Tailwind CSS
    DevOps
    Material UI
    webpack
    Selenium
    Git
    GraphQL
    TypeScript
    MongoDB
    Angular
    Blockchain
    NestJS
    Node.js
    Next.js
    React
  • $15 hourly

    • 4.6/5
    • (867 jobs)
    Hi there, I've been working on the Upwork platform as a professional web designer and developer, as well as a Digital Marketing specialist, since 2010. My core competency is in providing effective solutions in Web Designing, Development, and Internet Marketing for both start-ups and established corporations. My experience in Full Stack and CMS Development: -Develop SEO-friendly WordPress Websites. -Coding of custom WordPress theme and template files using HTML, CSS, PHP, JS. -Use of custom post type, custom fields, and jQuery to create portfolios, teams, testimonials showcase pages and sliders. - Good command over Elementor, WP-Bakery/Visual Composer, and all other Page Builder plugins.- Worked on PRO themes such as Avada, DIVI, Enfold, Be-theme, X-theme etc. - Woo-Commerce integration - All payment gateway integration -Ongoing maintenance and support for WordPress websites. - Responsive Design, Cross-browser compatibility. - 3rd-party APIs Integration. GRAPHIC DESIGNING SKILLS: Skilled in: “Adobe Photoshop + Adobe Illustrator + Sublime Text + Adobe InDesign + CorelDraw” Branding Services: Logo, Mock-ups, Business cards, Flyers, Banners, packages, Book covers DIGITAL MARKETING SKILL SET: - Search Engine Optimization (SEO), Search Engine Marketing (SEM), Social Media Optimization (SMO), Online Brand Management, Online Reputation Management, Loyalty Management, & Google Ad-words Management, and Link Building. Thanks for visiting my profile! I look forward to collaborating and assisting you with the best solutions for your needs!! Thank You
    vsuc_fltilesrefresh_TrophyIcon Apache Cassandra
    Bootstrap
    PSD to WordPress
    Ecommerce Website Development
    HTML5
    Social Media Design
    WordPress
    PHP
    WP Rocket
    LearnDash
    API Integration
    Graphic Design
    Social Media Marketing
    SEO Strategy
    Yoast SEO
    Search Engine Optimization
    Off-Page SEO
  • $40 hourly

    • 4.8/5
    • (25 jobs)
    WHY ME: ✅ 6,000+ hours on Upwork and 30,000+ hours in total; ✅ 100% Project Success; ✅ Fluent English; ✅ Can help you to connect business needs with technologies; ✅ Large experience building finance, health care, SAAS, etc. products; ✅ More over 15 years of development experience, driving scalable product architecture. ✅Co-founded 3 businesses, one successful exit. TECH STACK: - JavaScript for back-end and front-end development; - Python and AI/ML experience. - Microsoft .NET software development; - Data management and optimization in different DBs: Oracle, MongoDB, PostgreSQL, MS SQL, MySQL; - Cloud platforms: AWS, Azure;
    vsuc_fltilesrefresh_TrophyIcon Apache Cassandra
    Solidity
    Cryptocurrency
    Architectural Design
    Healthcare Software
    .NET Core
    FinTech Consulting
    Redux
    React
    .NET Framework
    SQL
    C#
    TypeScript
    ASP.NET
    JavaScript
    HTML
  • $70 hourly

    • 4.6/5
    • (39 jobs)
    I have over 6 years of large-scale software design & development experience (Backend). Experienced in both writing software from scratch and maintaining large existing projects. In this time I have developed applications on different verticals including messaging, audio/video streaming, ride-sharing, event-driven, eCommerce, FinTech, EdTech, IoT, Blockchain, and so on. Area of expertise : - REST, GraphQL and gRPC API design and development - Horizontally scalable and highly available systems design & development - Automating development workflows and deployment pipelines - Leveraging Micro-service architecture for system design and development - Design and developing RTC/WebRTC applications - Design and developing decentralized applications (DApps) & smart contracts - Android application development - Monitoring, log aggregation Skills & Technologies: - Golang, Java/Kotlin - RESTful, gRPC, GraphQL API - PostgreSQL, Redis, MongoDB, ElasticSearch - Apache Kafka, RabbitMQ, Apache Airflow - Kubernetes, Docker - MQTT, XMPP, WebRTC - Blockchain, Ethereum - Nginx, HAProxy, Apache - Digital Ocean, AWS, Azure - Linux, macOS - Build automation, CI/CD Interested in developing highly scalable distributed systems.
    vsuc_fltilesrefresh_TrophyIcon Apache Cassandra
    API
    Solidity
    Software Architecture & Design
    Distributed Computing
    Docker
    MQTT
    Golang
    Kubernetes
    Ethereum
    Java
    PostgreSQL
    GraphQL
    Blockchain
    RESTful API
  • $30 hourly

    • 5.0/5
    • (50 jobs)
    I have years of experience with a lot of different software development jobs and have been working on various projects for different companies. My expertise is web development, working mostly on LAMP Stack (Linux, Apache, MySql, PHP) and on front end technologies (HTML5, CSS3, Javascript, JQuery, Bootstrap...). However, I have many other programming skills (C#, Java, C, C++, Python...) and have been working on various CMS, or frameworks like Wordpress, Joomla, DocuWiki, Laravel and many other. I'm a programmer because I like to solve problems, be it mine or for other people. It brings me joy to see that my code helped someone or solved their problems. I'm ready for part time, as well as full time work. I'm fluent in English and open for a video interviews.
    vsuc_fltilesrefresh_TrophyIcon Apache Cassandra
    English
    Selenium
    Web Design
    Unity
    PHP
    Java
    C#
    JavaScript
    CSS
    Web Development
    MySQL
    HTML5
    HTML
    jQuery
    WordPress
  • $16 hourly

    • 4.7/5
    • (7 jobs)
    👋 Hi, I'm Alejandro Velazco Rodriguez—a Systems Engineer and Fullstack Developer with a focus on Web and Mobile technologies. 🔭 Currently, I'm pursuing a Master's in Python & Data Science at EIP International Business School, where I'm exploring machine learning, big data, and ethical hacking. 💪 Key Skills: Web & Mobile: Angular, React, Vue, Node.js, Python, Go , Rust, Next.js, Nuxt.js, Gatsby, Nest.js, Rocket, C#, echo. Blockchain: Ethers.js, Web3, Ethereum, Solana, Algorand. DevOps: Docker, Kubernetes, AWS, CI/CD Pipelines Data Science: Machine Learning, Big Data, TensorFlow 🎓 Education: Ongoing Master's in Python & Data Science, EIP International Business School B.Sc. in Systems Engineering, Metropolitan University 🎯 Interests: Blockchain, Data Science and Machine Learning.
    vsuc_fltilesrefresh_TrophyIcon Apache Cassandra
    C#
    Golang
    Rust
    Firebase
    React
    Vue.js
    Python
    Angular
    MongoDB
    SQL
    JavaScript
    Django
    Node.js
  • $44 hourly

    • 5.0/5
    • (139 jobs)
    Hi, I'm a web developer with more than 6 years of experience that specializes in WordPress, Woocommerce, Dokan. I can: 1. Optimize your wordpress site for speed, the site will be a lot faster and have a better rating in tools like GTmetrix and PageSpeed Insights; 2. Fix a problem with your wordpress site, It can be a responsivity issue, alignment issue or some of the functionality doesn't work as expected; 3. Add custom functionality, Some examples of what i have done are: User stays on the same page after registering/loging in using a popup, Custom dokan escrow fund release system and many more; 4. Modify existing plugin or theme functionality to the way you need; 5. I can connect your website/store/marketplace to any API you require, my latest API work has been related to auto generating shipment labels for shipping service Omniva; 6. I have experiece in Cloudinary, related to serving optimized and next generation images on wordpress sites; In the last 6 years i have worked with many different plugins and themes. Experience in plugins: Dokan, WC Vendors, Sprout Invoices, ApproveMe eSignature, BuddyPress, BuddyBoss Inbox, Yoast SEO, Polylang, WMPL, Contact Form 7, Page Builder by SiteOrigin, Gravity forms, Cloudinary, Elementor, WPBakery, Project Panorama, WP Job Manager, Slider Revolution, WP Event Manager, visual composer, easy wp booking and many more. Experience in themes: Avada, Divi, Hello, Astra, Ultra X Theme, Rocked, Wallcart, Enfold, Jupither, Salient, Shopkeeper, Martfury, BeTheme, Woodmart, Flatsome and many other. You can view some of my projects and client feedback on this page, and as you can see I focus on giving each and every client the satisfaction they deserve.
    vsuc_fltilesrefresh_TrophyIcon Apache Cassandra
    WordPress e-Commerce
    GitHub
    WordPress Malware Removal
    Wordpress Thrive Themes
    WordPress Plugin
    DigitalOcean
    WordPress
    PSD to WordPress
    WordPress Theme
    MySQL
  • $40 hourly

    • 4.1/5
    • (20 jobs)
    Hello, I am a machine learning and natural language processing developer having wast experience of more than 9 years in following tools and skills GenAI Machine Learning (Python, Keras, TensorFlow, Scikit-Learn, Graph Lab, Spark MLLib) NLP (Bert, Transformer, Word2vec, GloVe, textacy, spacy, rasa.ai, fasttext, IBM watson, wit.ai) Deep Learning(RNN, LSTM, GRU, CNN, Auto-Endcoders, GANs) Transformers(BERT, Elmo etc), Large language models(LLMs) Data Analytics Web Scraping Docker, Vagrant AWS, GCP Web development Mobile app development Frameworks I have been working on: TensorFlow , Pytorch, Keras, Pandas, Numpy, Spacy, Transformers, Scikit-Learn, Gensim, Scrapy, OpenCV, Fastapi, Plotly, Elasticsearch
    vsuc_fltilesrefresh_TrophyIcon Apache Cassandra
    LLM Prompt Engineering
    LLM Prompt
    Web Application
    Deep Learning Modeling
    Deep Neural Network
    BERT
    Supervised Learning
    Data Science
    Natural Language Processing
    PyTorch
    Python
    Deep Learning
    Tesseract OCR
    Machine Learning
  • $25 hourly

    • 4.9/5
    • (80 jobs)
    Greetings! I'm Prateek Arora, a seasoned mobile app developer with 9+ years of experience specializing in iOS and Android platforms. Proficient in Swift, Objective-C, Kotlin, and Java, I ensure a seamless development process from concept to deployment. 🌐 Technical Prowess: Crafting high-performance apps with expertise in Swift, Objective-C, Kotlin, and Java. 📱 Platform Excellence: Specializing in sleek iOS design and dynamic Android ecosystems for responsive, scalable apps. 🛠️ Full Stack Capabilities: Beyond front-end, adept at back-end integration using Firebase and RESTful APIs. 💡 Innovative Solutions: Staying ahead with the latest trends for standout apps in the competitive digital landscape. 🤝 Collaborative Approach: Effective communication, regular updates, and client feedback incorporation for satisfaction. 🏆 Proven Track Record: Successfully delivered 120+ projects, ensuring quality without compromising deadlines. Let's transform your app concept into reality! Whether a startup or established business, let's build something extraordinary together! 🚀
    vsuc_fltilesrefresh_TrophyIcon Apache Cassandra
    Figma
    RESTful API
    iOS
    Android
    Java
    Kotlin
    Swift
    iOS Development
    UIKit
    Android Studio
    Android App Development
    HealthKit
    Mobile App Development
    Dart
    Flutter
  • $25 hourly

    • 4.9/5
    • (3 jobs)
    Dear Prospective Client, Welcome to my Upwork profile! I am Sebastian, a versatile open source developer with 20 years of experience. My passion for IT and problem-solving skills ensure that I deliver tailored, high-quality solutions to exceed your expectations. Throughout my career, I have worked on projects spanning the globe, giving me the opportunity to adapt to various environments and collaborate with diverse teams. This experience has shaped me into a versatile developer who is adept at understanding clients' unique requirements and delivering customized solutions that exceed expectations. Key strengths: 1. Expertise in problem-solving and addressing challenges. 2. Excellent soft skills for seamless collaboration. 3. Commitment to open source and staying up-to-date with industry trends. Please explore my portfolio to learn more about my skills and past projects. I look forward to collaborating with you and contributing to your project's success. Sebastian
    vsuc_fltilesrefresh_TrophyIcon Apache Cassandra
    Cloud Application
    Front-End Development
    Software Design
    Security Management
    Software Development
    Application Integration
    Open Source
    Golang
    Kubernetes
    Java
    C#
    Docker
    TypeScript
    Back-End Development
    API
  • $20 hourly

    • 4.6/5
    • (55 jobs)
    I am a developer with 8+ years of experience in mobile apps development. Some of the client feedbacks for your kind reference, which I think, would align with your requirements. **Understanding my clients, This was Stable Guard app for MagicAI, a startup with a seed funding of $1.2 million:** "We had Anuj porting a web app to an iOS swift app. The app was very well done. The aspect of his work I appreciated the most was the fact that when we would give him deliverables overnight (we didn't overlap much in terms of times), he would get the work done with general instructions, instead of requiring detailed instructions for every little task. This sped up development immensely. The work was good quality, and our app successfully launched. We will be utilizing him again for future updates as well as future applications." **Problem Solving Skills:** "Anuj is a skilled Android developer and problem solver. There was good clarity in communication and very reasonable turn-around on work. Recommended!" What Can I help you with: Services: - Native app development (iOS / Android in flutter and react native) - Custom app development (iOS / Android in flutter and react native) - App UX/UI design (iOS / Android) - App porting (iOS / Android in flutter and react native) - App testing (iOS / Android in flutter and react native) - Apps upgrade and maintenance (iOS / Android in flutter and react native) Here's a small list of my skillset:
    vsuc_fltilesrefresh_TrophyIcon Apache Cassandra
    NativeScript
    Firebase Cloud Firestore
    Firebase Realtime Database
    iOS Development
    Kotlin
    Firebase
    Native App Development
    Chat & Messaging Software
    Mobile App Development
    App Development
    iPad App Development
    Swift
    Flutter
    Dart
    Android App Development
  • $10 hourly

    • 5.0/5
    • (5 jobs)
    Passionate iOS Lead obsessed with quality and user experience. With 8.0+ years of experience, working as an iOS developer for a US-based company in Austin/Mexico, Guadalajara. Also,I'm a freelance multi-disciplinary , who delivers creative and engaging solutions across different mobile platforms like iOS, Android and NativeScript. Always looks at how things work and always using the hardware and software to connect that digital system with the real-world and make things easy. I am a conscientious person who works hard and pays attention to detail. Experience Types: Project Champion, Lead the team, Individual Contributor, Freelance Project Types: Healthcare, entertainment, food, enterprise, retail, social, educational, kids, audio/ video, Live Video Calling, Hardware,iBeacon etc. Have a strong knowledge in C, C++ , Design Patterns, Objective-C and SWIFT. Also some knowledge of NativeScript and PhoneGap # Collaborate with cross-functional teams to define, design, and ship new features. # Unit-test code for robustness, including edge cases, usability, and general reliability. # Work on bug fixing and improving application performance. # Continuously discover, evaluate, and implement new technologies to maximize development efficiency. # Responsible, self-motivated, have the ability to work in a team, within tight deadlines, and under pressure # Quick to pick up new skills and eager to learn from others and take it as a challenge Area of expertise: Universal App, AppleTV, OpenTok (live video calling), Objective C, CocoaPods, GIT , SWIFT, Cocoa Framework, iOS/macOS X apps, QuartzCore, CoreImage, CoreAnimation, CoreText, AVFoundation, CoreData, SQLite, Payment gateways, Offline handling, Internationalisation ,etc Hardware implementations like iBeacon, Bar Code scanner, Citizen printer, Star printer, Cash Drawer, etc.
    vsuc_fltilesrefresh_TrophyIcon Apache Cassandra
    RESTful Architecture
    Amazon Web Services
    Firebase
    Java
    Objective-C
    Retrofit
    Kotlin
    PHP
    Swift
  • $50 hourly

    • 4.9/5
    • (16 jobs)
    I am an experienced Senior Java Developer and Architect with over 15 years in Java development and DevOps. I've led teams in creating successful platforms. My expertise lies in crafting high-performance Java web applications capable of handling millions of requests each second. Additionally, I am well-versed in Ad Tech standards such as OpenRTB, VAST, and MRAID, and skilled in integrating with different Ad Servers. I have delivered top-notch solutions in: ✓ AdTech (Ad Server, Ad Exchange, Advertising Platform, SSP, DSP) ✓ Data Engineering ✓ DevOps ✓ Big Data Whether you have detailed project requirements or just a general idea for business improvement, I will propose effective ideas for building robust, scalable, and cost-efficient products.
    vsuc_fltilesrefresh_TrophyIcon Apache Cassandra
    Deployment Automation
    Core Java
    ClickHouse
    Spring Framework
    Aerospike
    Microservice
    Real-Time Bidding
    Amazon Web Services
    DevOps
    Kubernetes
    Elasticsearch
    ETL Pipeline
    Docker
    Apache Kafka
    Java
  • $20 hourly

    • 4.9/5
    • (328 jobs)
    Hello, I'm Anup Patil, an accomplished Python developer with 8 years of specialized experience in web scraping, data extraction, and automation. My technical prowess extends to setting up robust server environments and managing cloud-based solutions with AWS, ensuring scalable and efficient operations. My skills include proficient use of Scrapy, BeautifulSoup, Selenium, and automated server setups, which are crucial for high-level data mining tasks. Here’s what I bring to the table: 🌟 8 Years of Proven Experience: With a consistent track record, I have completed numerous projects that demonstrate my ability to tackle complex data-related challenges effectively. 🔧 Web Scraping and Data Mining: Expert in extracting valuable information from various sources, ensuring accuracy and efficiency with advanced tools and techniques. 🤖 Automation Mastery: Skilled in automating repetitive tasks, enhancing productivity, and reducing errors, which is vital for modern data operations. 🔤 API Integration: Proficient in seamlessly integrating APIs to connect and automate systems, enhancing functionality and data flow. 🔒 Advanced Proxy and CAPTCHA Handling: Experienced in navigating security protocols, using advanced proxy configurations, and solving CAPTCHA challenges to maintain uninterrupted data access. ☁️ Cloud and Server Expertise: Well-versed in AWS services and server management, I provide solutions that are not only effective but also scalable and secure. 🕒 24/7 Support: I am committed to providing continuous support and prompt communication to ensure the success of every project. 🔐 Security Conscious: My approach always prioritizes security, especially in handling sensitive and critical data. My goal is to leverage my comprehensive technical skills to provide reliable, efficient, and cutting-edge solutions tailored to meet your specific needs. Whether it’s scraping complex websites, automating data retrieval, or setting up sophisticated server environments, I am here to help you achieve your objectives. Let’s discuss your project requirements and explore how my expertise can contribute to your success. Contact me today, and let’s get started on your next project!
    vsuc_fltilesrefresh_TrophyIcon Apache Cassandra
    Scraper Site
    Web Scraping Framework
    Data Entry
    Web Scraping
    OpenAI API
    ChatGPT
    Web Crawler
    Data Collection
    Data Science
    Scrapy
    Data Extraction
    Data Scraping
    Data Mining
    Python
  • $20 hourly

    • 5.0/5
    • (8 jobs)
    Hey Guys! I'm a seasoned 𝗙𝘂𝗹𝗹-𝗦𝘁𝗮𝗰𝗸 (𝗝𝗮𝘃𝗮) 𝗘𝗻𝗴𝗶𝗻𝗲𝗲𝗿 with 7 years of strong experience in software development with fluent English (𝗨𝗽𝘄𝗼𝗿𝗸 𝘃𝗲𝗿𝗶𝗳𝗶𝗲𝗱). I've actively participated in all development phases and developed complex web applications by ensuring high performance and responsiveness with the collaboration of cross-functional and remote teams worldwide. 𝗠𝘆 𝗧𝗲𝗰𝗵𝗻𝗶𝗰𝗮𝗹 𝗘𝘅𝗽𝗲𝗿𝘁𝗶𝘀𝗲: 𝐅𝐫𝐚𝐦𝐞𝐰𝐨𝐫𝐤𝐬: Spring boot, Spring Security, Hibernate, Web Services, Java EE, JPA, Spring MVC, Spring Rest, Spring data, REST APIs, AngularJS, ReactJS, HTML5, CSS3, Microservices (AWS, Azure). etc 𝐓𝐞𝐬𝐭𝐢𝐧𝐠: JUnit 𝗗𝗮𝘁𝗮𝗯𝗮𝘀𝗲𝘀: MySQL, Oracle, Postgresql, Cassandra, NoSQL solutions. 𝗔𝗱𝗱𝗶𝘁𝗶𝗼𝗻𝗮𝗹 𝗦𝗸𝗶𝗹𝗹𝘀: Cloud platforms, CI/CD, Agile methodologies, project management. 𝗜 𝘄𝗼𝗿𝗸 𝗱𝗶𝗹𝗶𝗴𝗲𝗻𝘁𝗹𝘆, 𝗲𝗻𝗷𝗼𝘆 𝗱𝗶𝘀𝗰𝗼𝘃𝗲𝗿𝗶𝗻𝗴 𝗻𝗲𝘄 𝗶𝗱𝗲𝗮𝘀, 𝗮𝗻𝗱 𝗲𝘅𝗰𝗲𝗹 𝗮𝘁 𝗼𝘃𝗲𝗿𝗰𝗼𝗺𝗶𝗻𝗴 𝘁𝗲𝗰𝗵𝗻𝗶𝗰𝗮𝗹 𝗰𝗵𝗮𝗹𝗹𝗲𝗻𝗴𝗲𝘀 𝘁𝗼 𝗰𝗿𝗲𝗮𝘁𝗲 𝗽𝗼𝘄𝗲𝗿𝗳𝘂𝗹, 𝘀𝗰𝗮𝗹𝗮𝗯𝗹𝗲 𝘀𝗼𝗹𝘂𝘁𝗶𝗼𝗻𝘀. 𝗜𝘁'𝘀 𝗻𝗼𝘁 𝗷𝘂𝘀𝘁 𝗮𝗯𝗼𝘂𝘁 𝘁𝗵𝗲 𝗷𝗼𝗯—𝗶𝘁'𝘀 𝗺𝘆 𝗽𝗮𝘀𝘀𝗶𝗼𝗻. 🏭 𝐈𝐍𝐃𝐔𝐒𝐓𝐑𝐘 𝐄𝐗𝐏𝐄𝐑𝐈𝐄𝐍𝐂𝐄 ► 𝗛𝗲𝗮𝗹𝘁𝗵𝗰𝗮𝗿𝗲: (Built a secure patient portal, increasing patient engagement by 30%) ► 𝗙𝗶𝗻𝗮𝗻𝗰𝗲: (Led platform development initiatives, boosting transaction processing speed by 25%.) ► 𝗘-𝗖𝗼𝗺𝗺𝗲𝗿𝗰𝗲: (Enhanced user experience through streamlined checkout process and personalized product recommendations) ► 𝗔𝗴𝗿𝗶𝗰𝘂𝗹𝘁𝘂𝗿𝗲: (Implemented IoT solutions for crop monitoring, leading to a 20% increase in yield efficiency) I actively engage in code reviews, troubleshoot and resolve issues across the stack, thoroughly document solutions, and consistently stay updated on the latest technologies and best practices in web development. I Possess outstanding communication and collaboration skills, adept at excelling independently or as a valuable team member. 🌬️ 𝐅𝐥𝐞𝐱𝐢𝐛𝐥𝐞 𝐂𝐨𝐥𝐥𝐚𝐛𝐨𝐫𝐚𝐭𝐢𝐨𝐧𝐬: 🌍 Global Timezones: I'm adept at working in various global timezones, ensuring smooth project coordination regardless of geographical differences. 👥 𝐃𝐢𝐯𝐞𝐫𝐬𝐞 𝐓𝐞𝐚𝐦𝐬: I thrive in collaborating with diverse, multicultural teams, bringing a breadth of perspectives and ideas to the table. 🔊 𝐄𝐟𝐟𝐞𝐜𝐭𝐢𝐯𝐞 𝐂𝐨𝐦𝐦𝐮𝐧𝐢𝐜𝐚𝐭𝐢𝐨𝐧: I prioritise transparent and open communication channels, providing regular updates and fostering engagement among stakeholders. 📈 𝐑𝐞𝐬𝐮𝐥𝐭𝐬-𝐃𝐫𝐢𝐯𝐞𝐧 𝐀𝐩𝐩𝐫𝐨𝐚𝐜𝐡: Committed to delivering results efficiently, meeting project milestones, and exceeding client expectations through my remote work experience. 🗣️ 𝐋𝐞𝐭'𝐬 𝐂𝐨𝐧𝐧𝐞𝐜𝐭: Tap the "Invite" button to discuss how we can collaborate effectively on your projects, leveraging my expertise in Full-Stack Web Development and delivering secure, engaging solutions with Java. 𝐊𝐞𝐲𝐰𝐨𝐫𝐝𝐬: #FullStackDev #Java #FrontendDev #BackendDev #WebDev #SecureWeb #JavaEE #SpringFramework #JavaServlets #JSP #JavaScript #HTML #CSS #ResponsiveWebDesign #RESTfulAPIs #SQL #MySQL #PostgreSQL #MongoDB #Authentication #Authorization #SessionManagement #ObjectOrientedProgramming #OOP #TestDrivenDevelopment #TDD #Agile #VersionControl #Git #DevOps #CI #CD #ScalableSolutions #PerformanceOptimization #AWS #Azure #GCP #CloudComputing #React #Angular #VueJS #Bootstrap #UnitTesting #Selenium #Cypress #Monitoring #Alerting #JAMstack #Serverless #API #GraphQL #Microservices #SoftwareEngineer #Docker #Kubernetes
    vsuc_fltilesrefresh_TrophyIcon Apache Cassandra
    Web Development
    RESTful API
    Microservice
    Spring MVC
    Spring Data
    Spring Data JDBC Extensions
    Java Collections Framework
    Java Servlet API
    Spring Security
    Spring Framework
    Spring Cloud
    Hibernate
    Spring Boot
    Core Java
    Java
  • $50 hourly

    • 4.6/5
    • (62 jobs)
    DataOps Leader with 20+ Years of Experience in Software Development and IT Expertise in a Wide Range of Cutting-Edge Technologies * Databases: NoSQL, SQL Server, SSIS, Cassandra, Spark, Hadoop, PostgreSQL, Postgis, MySQL, GIS Percona, Tokudb, HandlerSockets (nosql), CRATE, RedShift, Riak, Hive, Sqoop * Search Engines: Sphinx, Solr, Elastic Search, AWS cloud search * In-Memory Computing: Redis, memcached * Analytics: ETL, Analytic data from few millions to billions of rows and analytics on it, Sentiment analysis, Google BigQuery, Apache Zeppelin, Splunk, Trifacta Wrangler, Tableau * Languages & Scripting: Python, php, shell scripts, Scala, bootstrap, C, C++, Java, Nodejs, DotNet * Servers: Apache, Nginx, CentOS, Ubuntu, Windows, distributed data, EC2, RDS, and Linux systems Proven Track Record of Success in Leading IT Initiatives and Delivering Solutions * Full lifecycle project management experience * Hands-on experience in leading all stages of system development * Ability to coordinate and direct all phases of project-based efforts * Proven ability to manage, motivate, and lead project teams Ready to Take on the Challenge of DataOps I am a highly motivated and results-oriented IT Specialist with a proven track record of success in leading IT initiatives and delivering solutions. I am confident that my skills and experience would be a valuable asset to any team looking to implement DataOps practices. I am excited about the opportunity to use my skills and experience to help organizations of all sizes achieve their data goals.
    vsuc_fltilesrefresh_TrophyIcon Apache Cassandra
    Python
    Scala
    ETL Pipeline
    Data Modeling
    NoSQL Database
    BigQuery
    Apache Spark
    Sphinx
    Linux System Administration
    Amazon Redshift
    PostgreSQL
    ETL
    MySQL
    Database Optimization
  • $17 hourly

    • 5.0/5
    • (6 jobs)
    I am currently a Python Developer with a Bachelor Degree of Information Technology and with 5 years software development experience. I am focused now on developing application and web using Python. Some of framework that I'm using in Python is Django, DjangoREST, Flask, Celery and Scrapy. I'm able to discuss and translate gathered data into development task and delivered in timely manners.
    vsuc_fltilesrefresh_TrophyIcon Apache Cassandra
    RESTful API
    Django
    API Development
    App Development
    Data Scraping
    Scrapy
    Python
    Data Extraction
  • $50 hourly

    • 5.0/5
    • (20 jobs)
    9 years of full-stack design and development experience with Golang, NodeJS, Java, Python. 4 years worth of experience leading software development teams. BSc in Computer Science Designed and developed applications meeting client requirements for scalability, security, and reliability. Fixed numerous bugs in legacy systems. Competent applying architectural adjustments, optimizing for performance, and modernizing technology stacks. Experienced with software testing methodologies: TDD and Code First. Created a test plan and implemented thousands of end-to-end and unit test suites. Experienced with legacy systems. This taught me to quickly understand the intent behind code. It presented best practices to adopt, as well as code smells to refactor.
    vsuc_fltilesrefresh_TrophyIcon Apache Cassandra
    React
    Git
    SQL
    JavaScript
    Redis
    Software Architecture & Design
    Golang
    Spring MVC
    Rust
    Spring Security
    Python
    Node.js
    Angular
  • $20 hourly

    • 5.0/5
    • (18 jobs)
    Are you concerned about the web application or website performance once it's done? Research indicates that 53% of users will abandon an app if it takes more than three seconds to load. Thus, as a full-stack Web Developer with broad experience in building high-quality web applications and websites, online stores, and SaaS solutions in different areas: ⭐️ Fintech ⭐️ Blockchain ⭐️ eCommerce ⭐️ Dashboard systems ⭐️ Company Websites ⭐️ Data Warehouses ⭐️ and so on. I have a deep understanding of frameworks and programming languages I'm working with, which allows me to create any kind of web product, that works faster than the competitor's website and still remains scalable for numerous future upgrades, extensions, and improvements. In addition, I’m highly skilled in: ✅ Angular 2-17 ✅ React ✅ NodeJS ✅ AWS ✅ GraphQL ✅ RestAPI ✅ Nginx ✅ Apache ✅ and many others I also prefer to use NPM libraries, Frameworks, and MVP architecture and follow OOP paradigms as actual innovation solutions and standards. I prefer to use: 🧩 Git / HG / SVN as a version control system 🖥 VS code, tslint, eslint for friendly-looking code 🛠 Trello / Jira / Clickup / Notion as task tracking systems. I always try to establish long-term cooperation with clients, always making sure that the client is satisfied. I'm flexible with my working hours and I am tolerance of the possibility of working overtime if the customer or the project itself needs it 🫡 Let's start here 🚀 by defining your objectives, and pushing your project to the live server ASAP 🏆 Last updated: May 20th, 2024
    vsuc_fltilesrefresh_TrophyIcon Apache Cassandra
    C#
    Unity
    Angular
    WordPress
    ExpressJS
    Back-End Development
    Front-End Development
    Web Development
    Next.js
    API Integration
    API Development
    Angular 10
    Angular 2
    CSS
    JavaScript
    Node.js
    XML
    HTML
    React
  • $35 hourly

    • 5.0/5
    • (9 jobs)
    I have 18+ years of experience in software development in Telecom, Banking, and Healthcare domains. Primary skillsets include Big Data eco-systems (Apache Spark, Hive, Map Reduce, Cassandra), Scala, Core Java, Python, C++. I am well versed in designing and implementing Big data solutions, ETL and Data Pipelines, Serverless and event-driven architectures on Google Cloud Platform (GCP), and Cloudera Hadoop 5.5. I like to work with organizations to develop sustainable, scalable, and modern data-oriented software systems. - Keen eye on scalability, sustainability of the solution - Can come up with maintainable & good object-oriented designs quickly - Highly experienced in seamlessly working with remote teams effectively - Aptitude for recognizing business requirements and solving the root cause of the problem - Can quickly learn new technologies Sound experience in following technology stacks: Big Data: Apache Spark, Spark Streaming, HDFS, Hadoop MR, Hive, Apache Kafka, Cassandra, Google Cloud Platform (Dataproc, Cloud storage, Cloud Function, Data Store, Pub/Sub), Clouder Hadoop 5.x Languages: Scala, Python, Java, C++, C Build Tools: Sbt, Maven Databases: Postgres, Oracle Worked with different types of Input & Storage formats: CSV, XML, JSON file, Mongodb, Parquet, ORC
    vsuc_fltilesrefresh_TrophyIcon Apache Cassandra
    C++
    Java
    Apache Spark
    Scala
    Apache Hadoop
    Python
    Oracle PLSQL
    Apache Hive
    Cloudera
    Google Cloud Platform
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