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based on 1,822 client reviews
  • $60 hourly
    With over 15 years of comprehensive expertise in Contact Center and Customer Experience (CX) solutions, I am a distinguished freelancer recognized within the top 1% on Upwork (Expert Vetted). My proficiency spans across various platforms, prominently including Amazon Connect and Twilio, augmented by certifications as an AWS Solution Architect Associate, AWS Developer Associate and AWS SysOps Administrator Associate, along with specialized accreditations in Twilio Flex and Twilio APIs. My professional focus centers on Twilio Flex, Twilio APIs, Amazon Connect for omnichannel contact center implementation, optimizing IVR call flows, leveraging cloud telephony solutions, crafting sophisticated chatbots, conducting in-depth speech analytics, voice transcriptions, and proficiently executing back-end (NodeJs) and front-end (React) development tasks. Key Areas of Expertise: Amazon Connect and AWS: • Successfully executed numerous projects deploying Cloud Contact Center solutions using Amazon Connect. • Integrated diverse communication channels such as SMS (Pinpoint), Email (SES), WhatsApp (Pinpoint), and Facebook (Pinpoint) with Amazon Connect for seamless omnichannel experiences. • Engineered custom Contact Control Panels (CCP) leveraging Streams API for tailored functionalities. • Demonstrated proficiency in crafting intricate routing strategies through Amazon Connect Routing Profiles, Custom Skills, and Queue configurations. • Extensive experience in API integrations for transcription, voicemail, callbacks, and more utilizing services like Amazon Transcribe and Google Speech to Text. • Proficient in API development utilizing Amazon API Gateway, AWS Lambda, and Amazon DynamoDB. • Delivered corporate training sessions on AWS Connect and Amazon Lex, fostering organizational proficiency. • Spearheaded projects involving cognitive services such as Text Detection (Amazon Textract) and Neural Text-to-Speech (Amazon Polly), alongside the deployment of interactive chatbots and voicebots powered by Amazon Lex. • Integrated OpenAI APIs and Realtime Speech analytics (AppSync) with Amazon Connect. Twilio Flex and Twilio APIs: • Executed multiple projects on Twilio Flex, leveraging both Flex UI versions (1.x and 2.x) for Cloud Contact Center solutions. • Developed autodialers, integrated answering machine detection, and leveraged call status webhooks for enhanced efficiency. • Implemented robust spam detection APIs, fortifying client operations against unwanted communications. • Facilitated smooth transitions for clients migrating from Flex UI 1.x to Flex UI 2.x, ensuring uninterrupted workflow continuity. • Helped organizations with 10 DLC approval processes, WhatsApp Sender and Template approval processes. • Orchestrated migrations from Autopilot to Google Dialogflow, optimizing conversational experiences. • Designed and deployed complex routing strategies within Task Router APIs for customized skills and queues management. • Engineered and executed multi-channel campaigns encompassing SMS, Voice, and Email utilizing Twilio's APIs. • Leveraged Google DialogFlow ES and CX to develop interactive chatbots, enriching customer interactions. • Deployed real-time transcription capabilities using Google Speech to Text and Twilio Media Streams, enhancing communication accuracy. • Integrated Twilio Video seamlessly with Twilio Flex utilizing Conversations API and Twilio Sync for enriched collaborative experiences. Portfolio Review: I invite you to explore my portfolio to delve deeper into my recent projects and notable accomplishments, demonstrating my commitment to delivering exemplary solutions and driving impactful results.
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    Amazon S3
    Amazon DynamoDB
    Amazon Transcribe
    JavaScript
    Amazon Comprehend
    Amazon API Gateway
    Chatbot
    Amazon Lex
    React
    Node.js
    Amazon Web Services
    Twilio API
    Dialogflow
    Twilio
  • $60 hourly
    I'm Muhammad Imran, a seasoned developer based in Salt Lake City, a Full Stack Developer, Mobile App Developer, and MERN stack Developer. With over 14 years of experience, I've successfully delivered top-notch solutions to clients worldwide, showcasing my expertise as a skilled Mobile App Developer, iOS App Developer, Android App Developer, and Full Stack Developer. My proficiency extends across a diverse range of technologies, including Magento, AWS, and AI/ML. Let's collaborate to turn your digital ideas into reality! Industry-Recognized Engineer I Powering iOS, Android, Web & Backend Solutions Among the very & top best engineers out of 300,000 engineers on this platform. 🌟 Expert Vetted and TOP RATED Plus on Upwork 🚀 100% Job Success 🔗 5,000+ Hours of Work 🔧 14+ Years of Development, Leading & AGILE Experience I'm adept at crafting bespoke solutions in custom software development, Magento, mobile apps, AWS, AI/ML, and enterprise applications. With over 14 years of experience, I've earned a reputation for delivering top-notch solutions to clients worldwide, showcasing my expertise as a seasoned Senior Full Stack Developer. Note: because of my demand - I exclusively take projects that align with my vision for engineering brilliance. I try to reply in ~1 hour but over the weekend it can be up to 4 hours. Educational Background: MS in Data Science (AI / ML) MS in Computer Science BS in Computer Science Key Expertise: Mobile App Developer iOS App Developer Android App Developer Full Stack Developer. Custom Software Development: Tailored solutions to meet your unique business needs. Magento Development: Expertise in Magento 1 and Magento 2. Swift development, theme customization, and performance optimization. Mobile App Development: From small mobile applications to large-scale SaaS platforms. Healthcare, AI/ML, eCommerce, Social. AWS Solutions: Certified in AWS with extensive experience in various services. AI/ML Integration: Proficient in integrating AI and ML technologies into applications. Enterprise Applications: Designing and developing robust enterprise-level solutions. Technology Stack: Languages: Ruby, JavaScript, TypeScript, Python, Java Frameworks: Ruby on Rails, AngularJS, ReactJS, Django Databases: PostgreSQL, MySQL, NoSQL (MongoDB, DynamoDB) Cloud Platforms: AWS (EC2, EKS, Elastic Beanstalk) AI/ML: OpenAI API, TensorFlow Mobile: React Native, Angular E-commerce: Magento, WooCommerce DevOps: Docker, Heroku, AWS CDK, Terraform Client Testimonials: "Working with Faisal was an absolute pleasure. Their depth of knowledge and ability to simplify complex technicalities was invaluable." - Satisfied Client. "Imran is THE REAL DEAL, THE REAL 5-STAR FREELANCER. Smart, attentive, and responsive - a dream to work with." Let's Collaborate: Skills: Mobile App Developer iOS App Developer Android App Developer Full Stack Developer.
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    Magento
    Magento 2
    App Development
    iOS Development
    AngularJS
    Amazon DynamoDB
    Swift
    React Native
    React
    Amazon Web Services
    Objective-C
    PHP
    JavaScript
    Android App Development
  • $85 hourly
    I am an experienced elasticsearch, logstash and kibana consultant with a passion for getting meaning out of data. I have helped to setup and maintain large and small installations, from small pilot web sites upto TB clusters for multinational companies, on AWS and Google Cloud. Main technlogies: Non relational database: Elasticsearch Relational database: mySQL, postgres SQL Visualization: Kibana, Grafana Ingestion: Logstash, RabbitMQ. Kafka, SQS Web server: Nginx Scripting: Python, PHP, AWS Lambda OS: Ubuntu AWS, cloudwatch, EC2,route53, IAM, SQS
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    Amazon ECS
    MySQL Programming
    Logstash
    Kibana
    Core PHP
    RabbitMQ
    Elasticsearch
    NGINX
    Python
  • $60 hourly
    We're a team of Top-Rated Shopify Plus Experts. I'm the Engineering Lead responsible for building the architecture and advising on new features. We specialize at: ⭐ Custom Shopify Theme development and customization, UI/UX design ✅ Shopify store initial setup and ongoing maintenance 🚀 Page speed optimization for a Shopify store 📎 Custom automatic feeds development (Shopify export to Google Shopping, Idealo, Shopping feed, Yatego, etc) 📊 Custom automatic reports development 🎲 Custom apps and functionality development 🌎 We have our representative located in San Francisco, US. You can always meet and discuss the project there We offer Full-Stack development services for Shopify stores worldwide. With over a decade of experience and a proven track record of satisfied clients, we are reqady to address any challenge and offer expert guidance on industry best practices.
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    Web Design
    Ecommerce
    Ecommerce Website
    Page Speed Optimization
    Web Development
    Shopify Apps
    Liquid
    Shopify Plus
    JavaScript
    Shopify
    HTML
    Shopify Theme
    Node.js
    Shopify Templates
  • $80 hourly
    As a data architect, I have accumulated over 20 years of experience collaborating with various consulting companies. My expertise spans across multiple cloud platforms, including AWS (Glue, Lambda, Redshift, Athena), GCP (BigQuery, BigTable, GCS), Azure (ADF, Synapse Analytics, data lake, Analysis service), as well as Snowflake and DBT.. Additionally, I am skilled in Python programming and Airflow and have extensive knowledge of Kafka and Kinesis. Throughout my career, I have designed numerous dashboards utilizing Power BI, Tableau, and QlikSense. In addition, I have successfully developed CI/CD processes utilizing GitHub and Jenkins. I have gained valuable experience working with challenging clients across diverse industries, including banking, healthcare, energy, and marketing.
    vsuc_fltilesrefresh_TrophyIcon AWS Lambda
    Jenkins
    dbt
    Kafa
    Snowflake
    BigQuery
    Amazon Redshift
    PySpark
    Microsoft Azure
    AWS Glue
    Microsoft Azure SQL Database
    Microsoft Power BI
    Business Intelligence
    Qlik Sense
    Python
  • $40 hourly
    Numbers speak !!! 🕓 19,000+ hrs trusted by 70+ 😄clients worldwide 💯100% testimonial rate (not even a negative one) 🎖 HubSpot certified ― Inbound, Marketing Software, Contextual Marketing ⭐ 10+ years of full-stack web, CMS, and HubSpot development With over 10 years of front-end development experience and a knack for tackling complex Single Page Application (SPA) challenges, I am well-versed in developing and configuring robust CMS systems, such as: HubSpot, Netlify, Strapi, CraftCMS... I know exactly how to bring my substantial experience to leverage your next innovative product, which includes but is not limited to: 💻 Develop customizable, high-performing, user-friendly website and landing pages 💻 Build / update CMS templates with a keen eye for responsive design. 💻 Set up efficient email workflows to streamline your marketing efforts. 💻 Implement data cleanup processes to optimize your Operations Hub. As an independent freelancer who values direct interaction, I'm eager to collaborate with your team to simplify the digital experience for your marketing and sales staff. My goal is to make advanced functionalities accessible and user-friendly. While my expertise has been honed on frameworks like Vue.JS and React.JS, I'm adept at picking up new APIs and technologies quickly—an advantage for developing with the Hubspot API. Here are couple of kudos out of over 40 testimonials, given by 50 of my previous clients, taken directly from my Upwork Work History section: 🔊 "Tam did a brilliant job and is always flexible, open to ideas, creates his own suggestions and ideas on architecture where needed. He gets the job done, well. Hire him today." 🔊 "Tam counter-proposed a more cost-effective approach to upgrading from a complex AngularJS app. He kept a cool head and played a constructive role." 🔊 "Tam quickly understood the requirements and found his way around an existing code base. He was prompt to address feedback and delivered good quality code." 🔊 "Tam is the best developer I've worked with so far on Upwork. He was knowledgeable, professional, quick, and very responsive. He was amenable to my requests but not afraid to push back when I wanted something that could be done better a different way. I'll definitely use him again. Thanks, Tam!" 👀 Are you hunting for a result-oriented and cost-effective developer? 👀 Are you looking for a contributor as well as a problem solver? 👀 Are you searching for a contractor without working burdens? I’m glad to provide the best communication and help you kick the maximum out of your project with the most practical solutions. Send me the technical specs of your project and see if we are a good fit for each other.🙋‍♂️ Let’s bring your HubSpot to another level!🚀
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    ASP.NET
    Docker
    Serverless Computing
    Landing Page
    React
    Netlify
    Strapi
    CMS Development
    HubSpot
    Amazon Web Services
    HTML5
    CSS 3
    Node.js
    Vue.js
  • $40 hourly
    Do you need to expand your data team with someone who can deliver results? Or do you need someone to build data processes and applications for driving your business forward? I have built ml/data-based pipelines and infrastructures across the globe for clients like Audible, BMGF, Amazon Channels, etc. I have a cumulative experience of 6+ years (in Data Engineer, Data Scientist roles) with a strong focus on building data pipelines and warehouses, Big Data Analytics, ETL Processes, machine learning models, visualization, and business intelligence. What I can do? - Process your raw data and present it in a meaningful way - this could be either be output from a machine learning pipeline or BI dashboard or intermediate table for you to work with. - Create new channels to update your existing systems with insights and KPIs derived from BI Projects. - Suggest the best course of action for your data processes moving forward - Suggest new possible revenue sources or cost reductions. I feel comfortable with most modern tech stack but these are the tech I have used in the past for various projects. DATABASES: Postgres, Redshift, MSSQL, Aurora, Redshift, BigQuery, Snowflake, Cassandra, Stored Procedures AI STACK: Keras, NLTK, Sklearn, Pandas, Seaborn, Matplotlib, Numpy, Scipy, Gensim ETL: Airbyte, Glue, Datafactory, Airflow, Dagster, DBT LANGUAGES & LIBRARIES: Python, Java, C++, R, Pyspark, NetworkX BI & ANALYTICS: Plotly, Streamlit, Data Studio, PowerBI, Tableau, Powerquery WEB DEV: Flask, Bootstrap, APIs, Authentication, Auth0, FastAPI CLOUD: AWS, GCP, Azure, EMR, EC2, Sagemaker Studio, Lambda Functions, SNS, IAM, SSO, ECR, RDS, Cloudformation, Databricks MISC: Docker & Custom Images, Kubernetes, docker-spawn, GIT, Bash, Github actions Want to discuss your project? Please drop me a message. Thanks. - Sagar
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    PostgreSQL
    ETL Pipeline
    Docker
    dbt
    PySpark
    Amazon Redshift
    Amazon S3
    AWS Glue
    Snowflake
    Tableau
    BigQuery
    Amazon SageMaker
    Chatbot
    Databricks Platform
  • $15 hourly
    Hello, My name is Faiz Ahmed and I have 5+ years of experience as a Python Developer. I am a full stack developer and uses python Flask and Django for developing websites. My Back-end stack: Python Django Flask Numpy Pandas Matplotlib PostgreSQL, MySQL, SQLite My Front-end stack: Html CSS Javascript Jquery Bootstrap React.js Server side deployment: Google Cloud platform Alibaba Cloud Amazon web services A3 hosting Pythonanywhere Heroku Digitalocean and lots of other platforms. Message me so we can do a quick meeting. Thank you.
    vsuc_fltilesrefresh_TrophyIcon AWS Lambda
    PostgreSQL
    RESTful API
    Django Stack
    Scripting
    Django
    API
    Automation
    Flask
    API Integration
    Python
  • $80 hourly
    If you are looking for an all-in-one package person, you have found it. I do everything, starting from discussing your business needs, deciding on the project requirements, organizing the work, building the software solution from start to end (including frontend, backend, databases, visual aspect of the software), deploying the software solution, maintaining it, optimizing the hosting costs, providing future support for the software solution, providing technical documentation so someone else could take over the project in the future if needed. My real passion is architecting software solutions that will run natively on the cloud (specifically AWS), will be performant, scalable and secure but also cost-effective. I also work as a Full-stack web developer. - AWS Cloud: S3, Elastic Beanstak, VPC, IAM, RDS, DynamoDB, ElastiCache, Route53, CloudFormation, CloudFront, API Gateway, Lambda - Primary Stacks: .NET Core, JavaScript, Angular, Vue, React. - Databases & Storage: ElasticSearch, Redis, SQL Databases, NoSQL databases like MongoDB - Languages: NodeJS, Python, PHP - Payment Gateway Integrations: PayPal, Stripe, RazorPay, Bambora - Marketing Email Providers: SendGrid, Mailchimp - Map Providers: Google Maps, MapBox
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    AWS CloudFront
    .NET Core
    SQL Programming
    Payment Gateway Integration
    SaaS
    Software Architecture & Design
    Amazon Web Services
    WordPress
    Microsoft SQL Server
    Angular
    Microservice
    C#
    Node.js
    Vue.js
  • $20 hourly
    Top 3% React Native & React JS Developer | 7+ Years on Upwork | 50+ Satisfied Clients As an elite React Native and React JS Developer with over seven years of dedicated experience on Upwork, I have successfully executed numerous projects, earning accolades from more than 50 clients. My approach is focused on delivering superior quality, efficiency, and unmatched client satisfaction. I am adept at spearheading development teams through the agile process, ensuring robust app architecture, and maintaining the highest coding standards. Key Strengths: Front End Mastery: Extensive expertise in React and React Native, along with native development skills in Android (Java) and iOS (Swift). Backend Proficiency: Strong background in scalable and secure backend solutions using AWS, Node.js, MongoDB, and Firebase. Proven Track Record: Consistently praised for delivering projects that excel in both performance and user experience. Portfolio available upon request. I am committed to excellence and have a proven history of contributing to successful project outcomes. Let’s partner to transform your vision into a seamless and powerful application.
    vsuc_fltilesrefresh_TrophyIcon AWS Lambda
    Serverless Computing
    MongoDB
    MySQL
    GraphQL
    Mobile App Development
    Firebase
    Hybrid App
    Android
    Node.js
    React
    iOS
    Flutter
    React Native
  • $85 hourly
    As an AWS wizard of the highest order, I'm all about conjuring up scalable, fully automated cloud magic that runs itself. Perfect for startups craving top-notch infrastructure from scratch or big shots looking for a CTO who's not just another suit. My leadership? It's about mentoring the newbies and supercharging the old guard. I mix a cocktail of skills and experience that's like a neutron bomb of tech genius. My motto? Observe the multiverse, grab the good stuff, ditch the junk. That's how you get ahead in this cosmic tech dance.
    vsuc_fltilesrefresh_TrophyIcon AWS Lambda
    AWS CloudFront
    AWS Fargate
    CI/CD
    AWS CodeDeploy
    AWS CloudFormation
    Socket Programming
    AWS IoT Core
    AWS AppSync
    Amazon ECS
    Startup Company
    API
    API Development
    Node.js
    Amazon DynamoDB
  • $50 hourly
    "Programming" ... Defines my life. I have been into programming since teenage. Always ready to explore new technologies. Willing to engage in some serious work. I have been working in Machine Learning, Deep Learning and Data Science from past nine years. Besides that I also have vast experience in network programming, cuda Programming , Android App Development and Web Development. Clients ranging from startups to Fortune 500 companies across e-commerce, finance, IOT, audio, medicine, healthcare, real-estate and time series domains. My past projects technical domains: Linear regression, Logistic regression, PCA, Backpropagation, Autoencoders, Generative adversarial network, Reinforcement learning, Dropout regularization, K-means, KNN, SVM, Gaussian mixture model, EKF, UKF, Particle filter, SLAM, Stereo matching, Point cloud, Structure from motion, Path planning, Object detection, Classification, Localization, Segmentation, YOLO, OPENCV * Natural Language Processing (NLP) --Prompt engineering for ChatGpt --Prompt engineering for Gemini -- intent, question answering, e-commerce search, conversations. DialogFlow, wit.ai -- Abstraction, Extraction Text Summerization, Query Based summerization. * Time series analysis, prediction -- medical signals, stock/currency markets. * Deep reinforcement learning -- decision-making/scheduling problems. * Cloud (AWS, Azure, GCE) based network training and deployment. Hands-on expertise with a range of deep learning tools: * Tensorflow, Keras, TensorRT, PyTorch, TensorFlow Serving, Caffe, Deeplearning4j, Kubernetes, Tensorflow lite and Theano expert using CUDA backend. * Distributed network training (across CPUs/GPUs). * Building GPU-Accelerated Workflows with TensorFlow and Kubernetes * Data processing: pandas, dask, h5py, Spark. * Speech, Audio analysis -- speech to text, noise removal, source separation. DeepSpeech, DeepVoice, Alexa. --text to speech pocket phoenix,Kaldi toolkit * CHAT BOTS -- ChatGpt, my-croft open source AI chat bot * Computer Vision, Object detection, Segmentation -- locating, segmenting, bounding objects in medical/natural images. SSD, Yolo, RCNN. Proficient in building/training cutting-edge, novel neural architectures across various verticals. Familiar with latest research involving DNN, CNN, RNN / LSTM, seq2seq,GAN, attention models. Natural Language Processing with Transformers: Hugging Face Transformers RoBERTa, XLNet, BERT, GPT-3, Transformer-XL, BERT with TensorRT, Custom models Biomedical NLP: BioBERT, SciSpacy, BioELMO, NegBio Question-Answering: SQUAD, HotpotQA, MovieQA, Biomedical question answering Embeddings: Universal Sentence Encoder,ELMO, BERT, Flair,Glove,FastText Cloud services: Google Cloud, AWS,IBM Cloud, Digital Ocean, Heroku, Paper space and others Android DEVELOPMENT: ✓Java, Kotlin programming languages Web: J2EE, Angular.js, Reactjs, NodeJs Databases: Firebase, MYSQL, CoreData, SQLite, CloudKit,JSON, XML, MongoDb, DynamoDB If you are searching someone who is passionate for programming and research. you are on the right page.
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    Android App Development
    Amazon Rekognition Video
    Automatic Speech Recognition
    Machine Learning
    Chatbot
    PyTorch
    Computer Vision
    Deep Learning
    Natural Language Processing
    C++
    Java
    Python
    TensorFlow
    Deep Neural Network
  • $45 hourly
    Developing 𝗪𝗲𝗯 & 𝗠𝗼𝗯𝗶𝗹𝗲 𝗦𝗼𝗳𝘁𝘄𝗮𝗿𝗲 𝗦𝗼𝗹𝘂𝘁𝗶𝗼𝗻𝘀 using 𝗣𝘆𝘁𝗵𝗼𝗻/𝗗𝗷𝗮𝗻𝗴𝗼/𝗙𝗹𝗮𝘀𝗸/𝗙𝗮𝘀𝘁𝗔𝗣𝗜 is my passion and my life's work. For me, the most interesting thing in my work is solving problems, especially in 𝗙𝗶𝗻𝗮𝗻𝗰𝗲, 𝗛𝗲𝗮𝗹𝘁𝗵𝗰𝗮𝗿𝗲, and 𝗘-𝗖𝗼𝗺𝗺𝗲𝗿𝗰𝗲 industries. 𝗜 𝗴𝘂𝗮𝗿𝗮𝗻𝘁𝗲𝗲: 💎 Clean and well-structured code 💎 Best quality and high-speed performance 💎 Meeting deadlines 💎 Clear and regular communication ⚜️ Thanks to the ability to keep calm under tight deadlines and excellent time-management skills, I can conveniently work as 𝗮 𝗽𝗮𝗿𝘁 𝗼𝗳 𝗶𝗻𝘁𝗲𝗿𝗻𝗮𝘁𝗶𝗼𝗻𝗮𝗹 𝘁𝗲𝗮𝗺𝘀 and accomplish tasks on time. ⚜️ I work according to 𝗔𝗴𝗶𝗹𝗲/𝗦𝗰𝗿𝘂𝗺 method. It helps me to achieve the highest performance level and maximum transparency in collaboration with clients. ⚜️ I have a 𝗠𝗮𝘀𝘁𝗲𝗿’𝘀 𝗗𝗲𝗴𝗿𝗲𝗲 𝗶𝗻 𝗣𝘂𝗿𝗲 𝗠𝗮𝘁𝗵𝗲𝗺𝗮𝘁𝗶𝗰𝘀 (Hons).⚜️ To provide exceptionally high-quality solutions, I always use logical thinking and my addiction to solving problems. 𝗧𝗲𝗰𝗵𝗻𝗼𝗹𝗼𝗴𝗶𝗲𝘀 𝗮𝗻𝗱 𝗦𝗲𝗿𝘃𝗶𝗰𝗲𝘀: 💠 Python 💠 Django | Flask | FastAPI 💠 PostgreSQL | MongoDB | ArangoDB | Redis 💠 AWS | Heroku | Docker | RabbitMQ 💠 Celery 💠 Third-party APIs | REST 💠 Microservice Architecture 💠 Unit Tests | End2end tests
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    Python
    Flask
    RabbitMQ
    Asynchronous I/O
    MongoDB
    Redis
    PostgreSQL
    Celery
    Docker
    Amazon EC2
    Django
    Microservice
  • $60 hourly
    Timothy M, is a senior full-stack developer with 10+ years of experience, skilled in crafting scalable and efficient solutions. Proficient in both monolithic and microservice architectures, Timothy is a versatile asset to any team and project with a deep understanding of front-end and back-end technologies. With a passion for problem-solving and constant learning, he is the perfect candidate to drive your company's growth. 🎗️ Many long term multi-year partnerships 🎗️ Lead, consulted and produced software in remote teams consistently over a 10 year period. 🎗️ 13K hours of tracked and certified work to prove it. It is all here in the Upwork profile. Over the last 12 months my role was focused on developing and managing a team of backend and frontend developers for a leading Australian company in the Fintech industry. This included Frontend and Backend architecture, day-to-day team management, scrum and coding reviews, as well as tackling the hard coding issues we faced. I have developed proficient skills with: 🧣 AWs services, SQS, S3, SNS, Amplify, Lambda, RDS, ECS, Fargate, cloud formation. 🧣 Backend JavaScript: Nestjs, Express, Koa, Loopback, Sails, serverless, socket.io, and more. 🧣 Frontend JavaScript: NextJs, Angular 2+, React. CSS3, HTML 🧣 Storage: SQL, MySQL, PostgreSQL, MongoDB, Elasticsearch. AWS DocumentDB redis, memchache. 🧣 Backend Python: Django, Langchain 🧣 No/Low-code: Retool, airtable Languages/Dialects: ⚙️JavaScript es6, es7 ⚙️ Typescript ⚙️ Python ⚙️ PHP ⚙️ VB Couple reasons why my approach works: 1) Unlike other great developers I know how important is to build effective communication with the core and the greater team. 2) Whether I work internal/in-house or on startups my goal is always to the project and the outcomes. Look Forward to talking to you!
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    React
    Angular 5
    Node.js
    Airtable
    HTML5
    CSS 3
    PHP
    MongoDB
    NGINX
  • $35 hourly
    🚀 Top-Rated Full-Stack Developer | Web & Mobile Specialist 🌐 As a seasoned developer with a Master's in Computer Science and over 4+ years of experience, I'm dedicated to delivering excellence in web and mobile development. My expertise spans Ruby on Rails, React JS, React Native, Node.js, PHP, Laravel, and more. I prioritize transparent communication and problem-solving, ensuring a strong client relationship. Certified in Agile methodology, I'm proficient in project management tools like Jira and always eager to explore new technologies. Discover the quality and value of working with me through client reviews below. Let's collaborate on your next project! 🌟
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    Database Maintenance
    Firebase
    Web3
    Mobile App Development
    Blockchain Architecture
    API Development
    GraphQL
    Ruby on Rails
    Website Redesign
    Web Development
    JavaScript
    Node.js
    Firebase Cloud Firestore
    React
  • $25 hourly
    with 5 years’ experience working through all aspects of the software using spring boot and node.js,I Highly experienced solution-oriented software engineer development life cycle. From extensive analysis and design through execution and maintenance. Proficient in utilizing a wide variety of technologies like Java frameworks and tools, microservice and serverless architecture, AWS cloud ,DevOps tools and Database technologies. Possess excellent coding and testing skills to deliver client/business specific programs.
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    Automated Deployment Pipeline
    NestJS
    SQL
    API Development
    Spring Framework
    Amazon DynamoDB
    PostgreSQL
    Docker
    Kubernetes
    Java
    TypeScript
    Node.js
    GraphQL
    Microservice
    RESTful Architecture
    Serverless Computing
  • $30 hourly
    TOP RATED PLUS (Top 3% 🥇 of GLOBAL talent on Upwork). I'm a senior full-stack developer with development experience of more than 7 years. 💼 Professional me: I am a top-rated full-stack engineer at Upwork having rendered my services to top enterprises and VC-funded startups. My clients love my work because of my: My skills and experiences: - Javascript, Node.js, Express.js, React.js, React native, Feathers.js - HTML5, CSS3, Jquery, Scss, Bootstrap - Php, Laravel - Python, Django - Aws, Google Cloud, Godaddy, Docker, CI/CD - Saas, Erp, Fintech, Cms, Ecommerce, Automation, Scraper, Bot - Git, Github, Bitbucket, Gitlab SourceTree, Postman, Visual Studio Code, Ubuntu ✅ I quickly understood that my clients were looking for much more than that (and that I could contribute more than just writing codes). I figured out that most of my clients wanted someone whom they could trust as a technical partner for their products. Someone, who can give suggestions right from what tech should be picked up, how to get the UX right, and how we should plan the product launch. ✅ Client Reviews: I focus on providing VALUE to all of my Clients and Earning their TRUST. The Client Reviews and Feedback on my Profile are immensely important to me and the value that I provide. ✅ Over-Delivering: This is core to my work as a Freelancer. My focus is on GIVING more than what I expect to RECEIVE. I take pride in leaving all of my Clients saying "WOW" ✅ Responsiveness: Being extremely responsive and keeping all lines of communication readily open with my Clients. ✅ Resilience: Reach out to any of my Current or Former Clients and ask them about my Resilience. Any issue that my Clients face, I attack them and find a SOLUTION. ✅ Kindness: One of the biggest aspects of my life that I implement in every facet of my life. Treating everyone with respect, understanding all situations, and genuinely wanting to IMPROVE my Client's situation. The 🏆Client Review🏆 below which you will find in my reviews section and numerous others like it describes the quality of work and value that you can expect from working with me: " Japesh did a great job with the project. He understood the project requirements right away and fulfilled the job in no time! Last-minute we had an additional requirement come in and Japesh found a way to add that feature for us as well! Really happy with the result I would recommend anyone to hire Japesh! "
    vsuc_fltilesrefresh_TrophyIcon AWS Lambda
    MVC Framework
    API Development
    React
    JavaScript
    Django
    Laravel
    ExpressJS
    API Integration
    MongoDB
    MySQL
    Python
    PHP
    Node.js
  • $25 hourly
    🚀 Highly Experienced React & React Native Developer 🚀 I'm a skilled developer with expertise in React, React Native, and Expo. My strengths lie in creating exceptional mobile and web applications with a focus on top-notch user experiences. 💼 Experience: Proficient in React.js | React Native | Redux | React Hooks | MobX Skilled in JavaScript | TypeScript | HTML | CSS Mobile App Development with Java and Swift REST API Integration Apollo GraphQL Web Development with Next.js Familiarity with Bootstrap and Material-UI 🎯 Achievements: Successfully delivered numerous projects meeting clients' expectations. Consistently provided elegant and efficient solutions. Committed to delivering high-performance applications. Let's collaborate to turn your app ideas into reality. Contact me today, and let's create outstanding applications together!
    vsuc_fltilesrefresh_TrophyIcon AWS Lambda
    Firebase
    User Authentication
    Mobile Development Framework
    Android App Development
    Mobile App Development
    React Native
    RESTful API
    AWS Amplify
    GraphQL
    JavaScript
    Node.js
    React
    Docker
  • $120 hourly
    Top 1%; part of the UpWork's Expert-Vetted program. ✅More than 100 completed projects on UpWork 🇺🇸Available for calls during business hours 🎓4 AWS Certifications: Professional Solutions Architect (result is 945 out of 1000), Professional DevOps Engineer (915), Machine Learning Specialty, Cloud Practitioner In short, the solutions I created are used by millions of users every day. I could build a web, mobile or desktop application using Serverless Computing, conforming to the principle of the least privilege under version control for each function (Pay-per-use AWS or Google Cloud infrastructure that scales indefinitely). When I code either the Frontend or Backend solutions, the experience I have defined the prioritization of the characteristics for the product: 1. Simplicity (readability). ---- all frontend services I create are event-driven with the FaaS infrastructure or in rare cases BaaS. ---- I write in strict TypeScript (if you don't know TypeScript, it is the same JavaScript plus type safety to increase stability). 2. Technical scalability ---- Comparing to containerized microservices, where parts are connected to each other, FaaS development allows to create completely independent functions. It is easier to manage and to make changes as you split the functionality into much smaller blocks. ---- FaaS can scale indefinitely, so any load the cloud provider (such as AWS) could handle is supported. -------- If you have 0 customers today, your bill is $0, comparing to microservices, where you have to have at least one container running $25/month. A typical project is eight containers. -------- If you have a billion customers tomorrow, FaaS auto scales horizontally to handle the new load automatically, with the pricing of an optimized solution close to $2-5/million requests for ALL infrastructure combined. 3. Size ---- The size of the bundled assets needs to be small as it affects the operating costs (you are charged by millisecond). ---- I have created tens of different custom Webpack solutions for all types of possible cases to minimize and optimize the bundles, including code splitting, tree shaking, finding the most appropriate target for the JavaScript (or TypeScript transpilation), image minification and lazy-loading (PNG, JPEG, SVG, etc), service workers, manifest, etc. -------- and even the updating process of the objects in a file hosting (such as AWS S3) to upload only those assets that have changed. -------- I have worked on many projects, every time trying to find something else to improve, so the solutions are extremely well optimized. 4. Performance ---- when I had projects to optimize for performance, I have created a lot of custom solutions as public solutions are for everyone and, therefore, typically suboptimal for a particular case. I create SPAs, conforming to PWA standards, and frontend plugins using React.js. I follow Component Driven Development (CDD) together with Visual Test Driven Development. For that, I use PlayWright and Storybook. When writing styles, I use CSS-in-JS (primarily using Emotion library). The Desktop app development involves also Electron, but the overall process is the same. That is the reason why it is easy to convert my solutions to distribute as a desktop app. When creating mobile apps, I use either React Native or create hybrid web-based solutions with Capacitor.js. 🔒Backend: I am a strong proponent of Serverless Computing, who has extensive experience with FaaS and BaaS, automatically generating IAM rules and cloud services, and conforming to the principle of the least privilege for each function/service. In regards to HTTP APIs, I create: - RESTful APIs covering them in tests and preparing for adoption by frontend devs via password-protected documentation over web endpoints where the frontend devs are able to observe and interact with Swagger UI that conforms to the OpenAPI 3.0 specification. - GraphQL. Created in all possible ways: custom with plain GraphQL library (no Apollo or other wrappers), with Apollo; in Programmatic and Declarative ways I automate provisioning of infrastructure (IaC) using AWS CDK and Google Deployment Manager configs, so that it takes one CLI command to create the defined as code cloud infrastructure. Project management/Tracking I am used to daily reporting and knowing that communication is the key, I constantly try to improve clients' experience. I know best methods in version control and I conform to them, doing PRs, releases, keeping multiple branches, and using stashes. ---- I have automated branching & PR requests, as well as connected bots for notifying about changes in corporate chats. The code I write goes through automatic code-styling processing that improves readability and overall quality of the provided work. I use: ESLint and Prettier for all automated code formatting needs. Respectfully, Olzhas
    vsuc_fltilesrefresh_TrophyIcon AWS Lambda
    React Native
    JavaScript
    Browser Automation
    AWS IoT Core
    iOS Development
    GraphQL
    Hybrid App Development
    Android
    TypeScript
    Desktop Application
    DevOps Engineering
    DevOps
    Cross-Browser Testing
    Amazon DynamoDB
    React
    Node.js
    AWS Application
  • $50 hourly
    I am an experienced developer with building scalable data driven systems for wide variety of industries. My expertise is python, flask, flutter, Angular
    vsuc_fltilesrefresh_TrophyIcon AWS Lambda
    Amazon Web Services
    Data Structures
    Flask
    Docker
    Serverless Computing
    Kubernetes
    AWS CloudFront
    R Shiny
    Python
    R
  • $120 hourly
    I'm a highly skilled Top Rated Plus senior sofware and infrastructure engineer, specializing on Python and Typescript. I have extensive experience in: - Serverless infrastructure design and development utilizing variety of AWS services like: Lambda, DynamoDB, SQS, Step Functions, Batch - High-load infrastructure design: recently deployed Batch processing for AI model allow it to server thousands parallel requests with help of AWS Batch and AWS StepFunctions - DevOps: Infrastructure as code, AWS CDK, Serverless framework, Terraform, setting up CI/CD - Python and Typescript programming Technologies I’m working with: Serverless Framework, Cloudformation, AWS Lambda, DynamoDB, API Gateway, AWS Cognito, AWS Batch processing, Python, TypeScript, Node.js, Dart, Flutter, React
    vsuc_fltilesrefresh_TrophyIcon AWS Lambda
    Amazon DynamoDB
    Flutter
    App Development
    API
    TypeScript
    Amazon S3
    QuickBooks Online API
    Node.js
    Python
    Serverless Computing
    Automation
    Amazon Web Services
  • $45 hourly
    I am a software architect and a senior developer with 15 years of experience. I have a large background in software architecture, Linux systems, networking, security, web applications, databases, containers and several programming languages and technologies. I have strong experience designing and implementing robust, scalable and simple solutions to solve real-life business cases. I have worked with several architecture models, from server-client architectures down to complex distributed and real-time processing systems. I have worked for 6 years with Java technologies and frameworks. For 5 years I have been working with Python on many different kind of projects. I am very used to work in large teams with agile and agile methodology. Most recently, as an AWS Certified Architect, I have specialized myself in AWS solutions, and I have been working for the last years providing independant consultory to many companies. I have strong experience with many specialized AWS services, such as Lambda, IoT, Kinesis, RedShift, Amplify, Glue, Athena, among many others. I am also passionate about natural languages, having studied many of them, such as Spanish, English, French, Italian, German, Latin and Ancient Greek. Having a very strong background in grammars and linguistics, I am very interested in machine learning and natural language processing and generation.
    vsuc_fltilesrefresh_TrophyIcon AWS Lambda
    Amazon S3
    Terraform
    Amazon ECS
    Cloud Architecture
    AWS CloudFront
    AWS CodeDeploy
    AWS CloudFormation
    AWS IoT Core
    AWS CloudTrail
    Linux System Administration
    AWS IoT Analytics
    SQL
    Python
  • $12 hourly
    An AWS solutions engineer, specialized in building serverless applications, and engineering high level designs.
    vsuc_fltilesrefresh_TrophyIcon AWS Lambda
    API
    AWS CodeDeploy
    AWS Cloud9
    AWS CloudFormation
    AWS Fargate
    AWS CloudFront
    AWS CloudTrail
    Python
    Terraform
    AWS Glue
  • $40 hourly
    Are you in need of assistance in completing web development work or stuck with on-going projects / novel ideas in mind? Feel free to contact me to relieve your burden and meet your expectations! I’m a professional with 10+ years of experience in multinational & multidiversed work environments with vast exposure in all related technical arenas. I have obtained my academic degree in information technology from University of Colombo - Sri Lanka. My Technical Expertise Web Stack React, Redux, NodeJS (Loopback, Express), GraphQL, PHP (Codeigniter/Laravel/Phalcon), Wordpress, AWS, Docker, Kubernetes, Serverless Framework Mobile React Native, PhoneGap Work Well In Webpack, Angular v1, jQuery / JQueryUI, Bootstrap, Foundation, Semantic UI, BEM (CSS methodology), HTML & CSS, Git Workflow, SASS, Yeoman, Grunt, Gulp, Bower, Compass, Apps & Tools WebStrom, PhpStrom, Sublime, Visual Studio, Git, Bitbucket, JIRA, Balsamiq, Photoshop, Sketch 3, SourceTree Hands on experience Site optimization, Cross-browser Compatible, Responsive web development Continuous Integration & Delivery Kubernetes, Docker, Jenkins, Ansible, CodeFresh For further information, Please refer my linkedin profile by following username nithinmadhuranga
    vsuc_fltilesrefresh_TrophyIcon AWS Lambda
    AWS AppSync
    Kubernetes
    PHP
    Serverless Computing
    DevOps
    WordPress
    AWS Amplify
    Node.js
    React
    AWS Fargate
    React Native
    Docker
    Amazon Web Services
    Salesforce
  • $40 hourly
    Who am I: 🏆 TOP-RATED PLUS freelancer (with 100% Job Success) and all 5 🌟 reviews 💻 7+ years in Web Development (frontend & backend) 📜 Writing maintainable, readable, and well-documented code that works is my passion 🌟 WHY SHOULD YOU CHOOSE ME? 🌟 ✅ Client Reviews: I focus on providing VALUE to all of my Clients and Earning their TRUST. The Client Reviews and Feedback on my Profile are immensely important to me and the value that I provide. ✅ Over-Delivering: This is core to my work as a Freelancer. My focus is on GIVING more than what I expect to RECEIVE. I take pride in leaving all of my Clients saying "WOW". ✅ Responsiveness: Being extremely responsive and keeping all lines of communication readily open with my Clients. ✅ Resilience: Reach out to any of my Current of Former Clients and ask them about my Resilience. Any issue that my Clients face, I attack them and find a SOLUTION. ✅ Kindness: One of the biggest aspects of my life that I implement in every facet of my life. Treating everyone with respect, understanding all situations, and genuinely wanting to IMPROVE my Client's situations. The 🏆 client review 🏆 below which you will find in my reviews section and numerous other likes it, described the quality of work and the value that you can expect from working with me: "Tam is a very skilled developer who does not shy away from the difficult tasks. He is also extremely consistent and available. I will continue to hire Tam for ongoing projects." 🙋🏼‍♂️I am eager to work with you, to provide reliable, consistent, and High-Level solutions to design/development challenges. Please contact me, so we can discuss how we can work together to FULLY meet your Business Needs!
    vsuc_fltilesrefresh_TrophyIcon AWS Lambda
    Jest
    Firebase
    Golang
    Tailwind CSS
    NestJS
    React
    Node.js
    Next.js
    Python
    MongoDB
    PostgreSQL
    Gatsby.js
    Django
    ExpressJS
  • $40 hourly
    Creating a fully-functioning Single Page web Application could be challenging, but it is even tougher to add responsive support for every modern browser out there: Chrome, Firefox, Safari, and the infamous monstrous Internet Explorer; not to mention yet to put the app running blazingly fast as well as packaged in small footprint. These daunting experiences would be something familiar to an battle-tested web developer like me, who has more than 5 years playing with a diversity of frontend web frameworks: Vue.JS, Angular.JS and React.JS. Currently, I adopt React.JS as my frontend gatling gun, while also dedicate to AWS Serverless technology to serve as backend and infrastructure need. Did I mention I'm AWS certified yet ? With crossing 6000 Upwork hours to successfully deliver dozens of complex SPA web app projects, I know exactly how to bring my substantial experience to leverage your next innovate product, which includes but not limited to: 💻 Build your web product with React.JS/Next.JS (frontend) and AWS Serverless (backend) 💻 Deploy final package to any cloud providers: Heroku, Digital Ocean, or AWS 💻 Conduct any of code review, structure and technical refactoring of existing codebase. 💻 Participate in optimizing and enhancing website speed, security and reliability. 💻 Configure and setup any of automated DevOps pipeline deployment. 🤷‍♂ ️Something else missing? Feel free to throw it up to me. Challenge accepted! 🌐 𝐑𝐄𝐀𝐂𝐓.𝐉𝐒 ✅ 𝐒𝐒𝐑: Next.js ✅ 𝐑𝐎𝐔𝐓𝐈𝐍𝐆 & 𝐒𝐓𝐀𝐓𝐄: react-router, react-redux, react-mobx ✅ 𝐔𝐈: coreui/react, material-ui, ant-design, reactstrap , ag-grid/react-table, react-chartjs-2/ recharts, react-spinkit, react-datepicker/material-ui-datepicker, pdfkit/jspdf ✅ 𝐍𝐄𝐓𝐖𝐎𝐑𝐊𝐈𝐍𝐆: axios, swr, fetch, react-toast/notistack ✅ 𝐈𝐌𝐀𝐆𝐄: react-image-lightbox, react-svg-pan-zoom, react-slick ✅ 𝐓𝐃𝐃: jest, enzyme, react-test-renderer ✅ 𝐂𝐌𝐒: strapi 🌐 𝐆𝐄𝐍𝐄𝐑𝐀𝐋 𝐖𝐄𝐁 ✅ 𝐎𝐏𝐒: npm, yarn, webpack, gulp, browserify, RequireJS, eslint, jslint ✅ 𝐂𝐒𝐒: Bootstrap, Tailwind, Materialize, Less, Sass ✅ 𝐉𝐀𝐕𝐀𝐒𝐂𝐑𝐈𝐏𝐓: jQuery, ES5, ES6, Typescript, Promises, Promise/A+ ✅ 𝐔𝐈: D3.js, Chart.js, ace ☁ 𝐀𝐖𝐒 ✅ 𝐅𝐑𝐀𝐌𝐄𝐖𝐎𝐑𝐊: Serverless, AWS SAM ✅ 𝐋𝐀𝐍𝐆𝐔𝐀𝐆𝐄𝐒: Python, Node.js ✅ 𝐀𝐖𝐒: Lambda, DynamoDB, RDS, API Gateway, Route53, Cognito, SES, S3, CloudFront 👀 Are you hunting for a result-oriented and cost-effective developer? 👀 Are you looking for a contributor as well as a problem solver? 👀 Are you searching for a contractor without working burdens? I’m glad to provide the best communication and help you kick the maximum out of your project with the most practical solutions. Send me the technical specs of your project and see if we are a good fit for each other.🙋‍♂️ Let’s bring your Web App to another level!🚀
    vsuc_fltilesrefresh_TrophyIcon AWS Lambda
    jQuery
    Python
    AWS Amplify
    Amazon Cognito
    AWS Application
    Serverless Computing
    Serverless Stack
    HTML5
    CSS 3
    React
    Amazon Web Services
    Bootstrap
    AWS CloudFormation
    JavaScript
    React Bootstrap
  • $59 hourly
    I have a masters degree in electronic engineering, with more than 12 years of experience in the software industry. For the last few years I have been working as a consultant at various companies. I am also certified as an Amazon Web Services Solutions Architect Associate. My strengths include engaging with stakeholders, understanding needs, researching new technologies and formulating a novel solution for the specific use case. I pride myself on providing tangible value through these solutions. I am also versatile in various programming languages and not afraid to take on any language or system. I have experience using C, C++, C#, assembler, VHDL, ladder, Java, JavaScript, Python, and PHP in projects. However, Node along with Typescript are currently my preferred technologies for backend development and API integrations. For frontend components, I mainly use React with Typescript.
    vsuc_fltilesrefresh_TrophyIcon AWS Lambda
    ExpressJS
    React
    NestJS
    Jest
    MySQL
    Docker
    Node.js
    Microservice
    Microsoft SQL Server
    Amazon Web Services
    MongoDB
    React Native
    TypeScript
    Python
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