As an Upwork Expert-Vetted and Top-Rated Plus professional, I’m in the top 1% of experts in this field. When it comes to data, I love to find creative and visual ways to tell a story. I've learned a lot over the last 10 years and most importantly that there is always more to discover. I specialize in Tableau, Microsoft Power BI and Apache Superset to visualize your data. I use Figma to create compelling wireframes and designs to bring the UI and UX to life. And I work with my clients to understand who they are and what they do... ✨Data Visualization Strategy // consulting to get you started on your data viz journey ✨Dashboards & Reports // let's get building in Tableau, Power BI, or Apache Superset ✨UI/UX Design // let's bring your data story to life in Figma and enhance existing content ✨Embeded Analytics // simplify your tech stack by embedding dashboards and reports ✨Custom Web Portals // build a professional custom web portal for your org or clients to access content Let's get started on your story... James Jeffrey Data Visualization Lead @ Radar BI

🎖 6 years of battle tested Salesforce Developer & Consultant | 50+ Projects Delivered | 20+ Global Clients I help businesses unlock the full power of Salesforce whether it’s Marketing Cloud, Sales Cloud, Service Cloud, Personalization (MCP), Data Cloud. I specialize in designing scalable, high-impact solutions. 🔹 Certified Expertise • 11X Salesforce Certified • Salesforce AI Associate & Specialist • Salesforce Data Cloud Consultant • Salesforce Marketing Cloud Consultant • Salesforce Administrator • Advanced Cross-Channel & Personalization (Interaction Studio) Accredited 🔹 What I Deliver Sales Cloud & Service Cloud • End-to-end Salesforce implementations • CRM architecture and solution design • Flows, Apex, Lightning Web Components (LWC) • Custom objects, security model, reports & dashboards • Integrations using REST APIs and third-party platforms Marketing Cloud • Journey Builder, Automation Studio, Email Studio • Contact Builder and Data Extensions • Marketing Cloud Connect • AMPscript, SQL, SSJS • Multi-Business Unit implementations • Subscriber management and preference centers Data Cloud & AI • Data Cloud implementation and customer data unification • Identity Resolution and data ingestion • Agentforce and OpenAI integrations • AI-powered Salesforce automation and business workflows I believe the best Salesforce solutions are built by understanding the business first and the technology second. Whether it's a new implementation, an existing org that needs improvement, or ongoing Salesforce support, my focus is on delivering solutions that are scalable, practical, and aligned with business goals. Let's discuss how I can help with your Salesforce implementation, optimization, or long-term support.

I am a full time Data & Product Analytics Consultant (Data Engineer and Data Architect) with over 10+ years of professional experience helping companies build an end-to-end Business Intelligence Solutions. [SERVICES] Data Strategy Data Architecture Design & Implementation Data Extraction Data Integration & Transformation Data Visualization Business Insights Product Analytics My goal is to help companies by delivering cost-effective yet high-quality & business-driven Modern Data Stack for Business & Product Analytics. I would love to hear from you.

Are manual processes slowing down your business? I help organizations automate document-heavy and repetitive workflows using UiPath, Power Automate, Document AI, and intelligent automation solutions. With 15+ years in IT and 10+ years focused on RPA and process automation, I have delivered 500+ automation solutions across healthcare, mortgage, finance, operations, and enterprise environments. Common projects I help clients with: ✔ UiPath Development & Enterprise RPA ✔ Microsoft Power Automate Workflows ✔ Intelligent Document Processing (OCR + AI) ✔ Invoice & Claims Processing Automation ✔ ERP & CRM Integration Automation ✔ Data Extraction & Validation ✔ Workflow Orchestration & Hyperautomation ✔ AI-Powered Process Automation Recent automation solutions include: -- Mortgage CRM automation using UiPath -- Healthcare process automation -- AI-powered document extraction workflows -- Slack-based AI assistants -- Multi-system Power Automate integrations -- ERP workflow automation Why clients hire me: ✔ 100+ Bots Delivered ✔ 15+ Years of Enterprise IT Experience ✔ Strong UiPath, Power Automate, and Document AI Expertise ✔ End-to-End Delivery from Discovery to Production ✔ Focus on Measurable Business Outcomes My goal is simple: reduce manual effort, improve process accuracy, and help organizations scale operations through intelligent automation. If you're looking to automate business processes, document workflows, or enterprise operations, let's discuss your requirements.

Most AI products die in production when latency spikes, integrations break, or pipelines silently fail under real load not because the model is bad. I build production‑ready AI systems and automations: real‑time voice apps, AI SaaS backends, RAG/agent workflows, and operational tooling that keep working after week two under real traffic, real data, and real users. What I build ☑️ Real‑time AI/voice systems: STT → translation → TTS pipelines (Deepgram, OpenAI, ElevenLabs) with WebSockets, streaming, and latency control ☑️ AI SaaS backends: FastAPI/Django services with auth, Stripe billing, usage limits, and admin dashboards ☑️ RAG & agent systems: retrieval pipelines, tools/agents (Claude Code, LangChain, LangGraph), vector DBs, evaluation + monitoring ☑️ Automation & ops: Claude/ChatGPT‑driven workflows, scrapers, n8n/Zapier‑style orchestrations, backend glue between CRMs, APIs, and internal tools Selected work shipped ➡️ AI ordering assistant (text + voice, English + Greek) with FastAPI backend and React frontend deployed via Docker, running live with real users and payments ➡️ Humanized AI text platform with Stripe subscriptions, usage metering, and ChatGPT‑style UI fully deployed on client infra, designed for ongoing content volume ➡️ Sports analytics platform with real‑time data feeds, AI‑driven betting insights, and full subscription/admin system for paying customers How I work ➡️ Start from failure modes: latency, concurrency, integrations, and data quality, not just “it works on my machine” demos ➡️ Design clean, testable backends (FastAPI/Django), strong API contracts, and simple, maintainable frontends (React/Next.js) ➡️ Add logging, monitoring, and retries from day one so you can see and fix issues instead of guessing ➡️ Ship in small, verifiable milestones every week ends with something you can run, break, and validate Core tech stack ☑️ AI: Claude / OpenAI / Gemini, Claude Code, LangChain, LangGraph, RAG, vector DBs (Pinecone, ChromaDB, FAISS) ☑️ Backend: Python, FastAPI, Django, REST APIs, WebSockets, async processing ☑️ Frontend: React, Next.js, TypeScript, Tailwind ☑️ Infra: PostgreSQL, Supabase, AWS (EC2, Lambda, S3, RDS), Docker, GitHub Actions, Vercel/Render/Railway If you need a system that can survive real users not just another AI prototype send your repo, current architecture, and target use case. I’ll tell you exactly what’s fragile and what I’d fix in the first 2–3 weeks. 🔑 Keywords: AI Engineer | Python Developer | LLM Developer | RAG Developer | AI Chatbot Developer | FastAPI Developer | Django Developer | Generative AI Expert | AI Automation Expert | LangChain Developer | OpenAI API Integration | GPT-4 Developer | Backend Python Developer | AI Agent Development | Retrieval-Augmented Generation | Vector Database Expert | Prompt Engineering | Flask Developer | REST API Developer | Machine Learning Engineer | NLP Developer | Python Automation | Web Scraping Expert | Scrapy Developer | AWS Python Developer | Docker Python | Microservices Architecture | PostgreSQL Expert

At Oscore we understand that every engagement is different. The nature of the deliverables, the scale and complexity, the technologies, the business domain, all can vary widely. We aim to understand what you’re looking to get done, and offer guidance as to directions that we could explore. We are focused on building applications that meet your demands and we have a team of world-class, Microsoft Certified developers who can build your applications to engage with your business’s customers and commercial partners Oscore specializes in Azure infrastructure, .Net programming for Web/API and Apps, Blazor, Power BI and Machine Learning. Whether your business needs to create MS Office apps, databases, WPF desktop apps, API's or complete infrastructures, Oscore has the insight and skillset to help you achieve your goals. Our largest clients to date include a global Fortune 500 oil major, where we built the Backend REST API plus a Blazor Front End. We are also working on projects with a Norwegian bank and a large online education provider. Our most recent project is building an API in Azure for an international biopharmaceutical company. If you have any live of planned projects you wish to discuss, please get in touch.

📊 Backend & Data Engineer | Expert in AWS, Python & Big Data Systems | 100% Client Satisfaction 👋 Do you need to build a backend infrastructure that doesn't just "run," but effectively processes, stores, and visualizes massive amounts of data? I help data-driven companies build robust architectures using AWS, Python, and Java, turning raw data into profitable business insights. With experience across Software Engineering and Data Pipeline Architecture, I bridge the gap between application development and data warehousing. I don't just write scripts; I build scalable engines. I work across: • Custom ETL/ELT Pipelines (Batch & Real-time streaming) • Serverless Backend Architecture (AWS Lambda, API Gateway) • Data Warehousing & Data Lakes (Redshift, BigQuery, S3) • Automating workflows with Apache Airflow & Robocorp • Visualizing business intelligence via Power BI & Looker Studio Whether you need to migrate legacy data to the Cloud, build a real-time analytics dashboard, or architect a Java/Python backend, I ensure your system is fast, cost-effective, and scalable. ✅ What I bring to your project: • Hybrid Expertise: Strong Software Engineering (Java/Python) skills applied to Big Data problems. • Cloud Mastery: Deep knowledge of the AWS Ecosystem (Glue, EMR, Athena, Kinesis). • Data Quality: Implementing dbt and rigorous testing to ensure your data is accurate. • End-to-End Delivery: From infrastructure infrastructure-as-code to the final BI Dashboard. • Communication: I translate complex engineering concepts into clear business updates. 🔥 Recent Projects I've Delivered: FinTech Data Lake: Built a secure Data Lake on AWS S3 + Redshift, processing 1TB+ daily transaction data using AWS Glue & Spark. E-Commerce Real-Time Analytics: Designed a streaming pipeline using Apache Kafka & AWS Kinesis to track user behavior in real-time, visualized in Power BI. SaaS Backend Migration: Refactored a legacy monolith into microservices using Java & AWS Lambda, reducing server costs by 40%. Marketing Automation System: Developed Python scripts utilizing Robocorp to scrape competitor pricing and auto-update internal SQL databases. Healthcare Reporting Portal: Created a compliant data warehouse in BigQuery with a Looker Studio frontend for doctors to view patient trends. 🧠 Tech Stack & Skills Languages & Backend: Python (Pandas, NumPy, Boto3), Java (Spring Boot), SQL (Advanced), Shell Scripting. Cloud & Infrastructure (AWS & Google): AWS Glue, Lambda, Kinesis, EMR, Athena, Redshift, EC2, S3, IAM, Google DataProc, BigQuery. Big Data & Orchestration: Apache Spark, Apache Kafka, Apache Airflow, dbt (Data Build Tool). Databases & Storage: PostgreSQL, MySQL, Amazon Redshift, Google BigQuery, DynamoDB. Visualization & BI: Power BI (DAX), Looker Studio, Tableau, Excel (Advanced). DevOps & Tools: Git, Docker, Jenkins, CI/CD Pipelines 🧩 Typical Use Cases I Help With: • ETL Automation: Replacing manual Excel reporting with automated Python/Airflow pipelines. • Cloud Migration: Moving on-premise SQL databases to AWS Redshift or Google BigQuery. • Backend API Development: Building APIs that serve data to frontend applications. • Data Cleaning: Using dbt and Spark to clean messy datasets for Machine Learning models. • Dashboard Creation: Building "Single Source of Truth" dashboards for CEOs and Product Managers. 🏭 Industries I've Served: FinTech · eCommerce · Logistics/Supply Chain · SaaS · Healthcare · Marketing Analytics 💬 Client Feedback ⭐⭐⭐⭐⭐ "John is a rare find—he understands the code AND the data. He automated our entire reporting process on AWS." ⭐⭐⭐⭐⭐ "Excellent communication. He built a dashboard that finally makes sense of our messy database. Highly recommended." ⭐⭐⭐⭐⭐ "Technical expert. Handled our migration from on-prem to Redshift without any data loss." 𝐇𝐢𝐠𝐡𝐥𝐢𝐠𝐡𝐭𝐞𝐝 𝐒𝐤𝐢𝐥𝐥𝐬: Data Engineering, Python Developer, AWS Architecture, ETL/ELT Design, Big Data Analytics, Database Administration, Business Intelligence (BI), API Development, Data Modeling, Data Warehousing, Machine Learning Integration, Real-time Data Streaming, Serverless Computing, Agile Methodologies. 🚀 Let’s Talk If you need a technical partner who can handle both the code and the data—let's connect. I will help you turn your data into your company's most valuable asset. Click ‘Invite to Job’ to start a conversation about your architecture.

Microsoft Azure Ecosystem: 1. Expertise in Azure Functions for real-time data processing, automation, and seamless integration with various Azure services. 2. Developed Azure Data Factory (ADF) pipelines to orchestrate ETL workflows, enabling efficient data ingestion, transformation, and movement across cloud environments. 3. Built scalable data processing solutions using Azure Databricks, optimizing large-scale analytics and AI-driven insights. 4. Implemented Logic Apps to automate complex business workflows, integrating with third-party APIs, SharePoint, and Microsoft Teams. 5. Managed and optimized Azure SQL Database, Azure Data Lake, and Dataverse, ensuring secure, efficient, and scalable data storage and processing. Power Tools: 6. Developed Power Automate workflows to streamline business processes such as email automation, document management, task scheduling, and notifications. 7. Integrated Power Automate with SharePoint, Microsoft Teams, and Dataverse to enable seamless data movement, approvals, and workflow automation. 8. Designed custom Power Automate workflows for manual process triggers, automated scheduling, and enhanced operational efficiency. 9. Proficient in Power BI for data visualization, report automation, and interactive dashboards, leveraging Power Query and Power Pivot for advanced data transformations. 10. Experienced in Power Apps for building custom applications, enabling users to interact with Azure and Power BI data sources dynamically.

Web Scraping and Data Extraction specialist — 8+ years, 400+ projects, 5,000+ websites scraped. I build reliable, production-ready scrapers and ETL pipelines in Python that turn websites, mobile apps, APIs, databases, and raw files into clean, structured, decision-ready data. Whether the source is a JS-heavy site, an authenticated portal behind login, a mobile app, a public or hidden API, a database, or a raw dataset, I design the right solution — then clean, validate, deduplicate, and deliver it as CSV, Excel, JSON, database, or API. 🔍 Tools Python · Scrapy · Selenium · Playwright · BeautifulSoup · Frida · Jadx · mitmproxy · pandas · SQL · AWS ✨ Core Expertise ▸ Web Scraping & Crawling — large-scale crawler pipelines with session handling, pagination, retries, and validation. Static sites, dynamic JS-rendered pages, e-commerce, real estate, store locators, and sites behind login. ▸ Mobile App Scraping & Reverse Engineering — extracting data from Android apps, including API discovery and encryption/decryption via Frida, Jadx, and mitmproxy. A genuine specialty most scrapers can't deliver. ▸ Data Extraction & Mining — business, product, pricing, contact, reviews, listings, real estate, insurance, and lead-gen datasets from websites, apps, APIs, databases, PDFs, and raw files. ▸ Python Automation & API Work — hidden-API discovery, authenticated API clients, scheduled automation, price monitoring, and change tracking (sessions, cookies, headers, tokens). ▸ ETL & Data Engineering — cleaning, transformation, validation, enrichment, deduplication, and delivery with Python, pandas, SQL, and AWS at scale. 🎯 Selected Projects ▸ Scraped 100M+ employee reviews across 20 countries for a Harvard Business School study — a scalable Python pipeline handling pagination, rate limiting, deduplication, and multi-region coverage. ▸ Parsed 2TB of machine-readable (MRF) files on AWS to extract structured insurance pricing — streaming/iterative parsing far larger than memory, normalized into clean tables. ▸ Tracked 816 store locators across US and EU retail chains with scheduled crawler + ETL pipelines to detect new openings — a signal used to predict real-estate prices. ▸ Built multi-source scrapers extracting 500K+ business records from Yelp, Google Maps, and similar — name, address, phone, email, website, category — deduped and delivered in CSV, Excel, JSON. ✅ Why Clients Hire Me ▸ Production-ready scrapers and ETL pipelines built to your exact data needs ▸ Hard-to-reach sources handled — anti-bot protection, login walls, mobile apps, hidden APIs ▸ Clean, deduplicated data in your preferred format ▸ Clear communication, reliable delivery, documentation, and ongoing maintenance 🤝 Next Step Share the source, the fields you need, and your delivery format — I'll come back with a clear plan, timeline, and exactly what I can deliver. Browse my portfolio below for examples and reviews.

I am a Los Angeles-based Professional with 17+ years of work experience where I took roles of Full Stack Developer, Project Manager, Solutions Architect, Team Lead, DevOps Engineer, Project Consultant, Cloud Consultant, Cloud Architect, etc. I have a rich portfolio of Web and Mobile Apps(both iOS and Android). ***************** I have led Projects for well-known companies like Sony Pictures, Paramount Pictures, 20th Century Fox, Prince Cruise Line(PCL), Masimo, and Creative Artist Agency. ***************** As a Full Stack Developer/Team Lead/Project Manager/Solutions Architect I have extensive experience with a Web application, Mobile Applications, Desktop Application Development, UI/UX Design, Tech Support, Cloud Architect, and Consulting Projects involving technologies like Wordpress, PHP, Java, Python, C#, Javascript, React, Angular, Node.js, Express.js, Shopify, Swift, Objective-C, React Native, AWS, GCP, Microsoft Azure, etc. - Build and develop the project team to ensure maximum performance, providing purpose, direction, and motivation. - Lead projects from requirements definition through deployment, identifying schedules, scopes, budget estimations, and project implementation plans, including risk mitigation. - To coordinate internal and external resources, ensuring projects remain within scope, schedule, and defined budgets, in collaboration with project staff from various functional departments. - Analyze project progress and, when necessary, adapt scope, timelines, and costs to ensure that the project team adheres to project requirements. - Establish and maintain relationships with appropriate client stakeholders, providing day-to-day contact on project status and changes As DevOps/Cloud Engineer I have extensive experience in designing, implementing, and maintaining complex Cloud-based infrastructure with a focus on security, scalability, and high availability. AWS Services: Deployment Automation: Proficient in automating deployment processes using AWS CloudFormation, Terraform, and Ansible to reduce errors and improve speed. Continuous Integration and Delivery: Skilled in setting up CI/CD pipelines using AWS CodePipeline, AWS CodeBuild, and Jenkins for automated build, test, and deployment processes. Monitoring and Alerting: Capable of setting up monitoring systems using AWS CloudWatch, Prometheus, and Grafana to identify performance issues proactively. Security and Compliance: Knowledgeable in implementing security best practices and automated compliance checks using AWS Config and AWS Security Hub. Cost Optimization: Experienced in optimizing AWS spending using tools like AWS Cost Explorer, AWS Budgets, reserved instances, spot instances, and auto-scaling. Microsoft Azure Services: DevOps Strategies: Proficient in designing and implementing effective DevOps strategies using Microsoft Azure for continuous integration, delivery, and deployment. Infrastructure Provisioning and Configuration: Experienced in provisioning and configuring Azure infrastructure using tools like Azure Resource Manager (ARM) templates and Terraform. Continuous Integration and Continuous Deployment (CI/CD): Skilled in establishing CI/CD pipelines using Azure DevOps for automated build, test, and deployment processes. Automation and Orchestration: Capable of automating tasks and processes using PowerShell, Azure CLI, Azure Automation, and Azure Logic Apps to streamline operations. GCP Services: Deployment Automation: Proficient in automating deployment processes using tools like Google Cloud Deployment Manager and Terraform to ensure consistency and reliability. Continuous Integration and Delivery: Skilled in setting up CI/CD pipelines using Cloud Build and Jenkins on GCP for automated testing, building, and deployment of applications. Monitoring and Alerting: Capable of implementing monitoring and alerting systems using Stackdriver Monitoring and Stackdriver Logging to identify and resolve issues promptly. Security and Compliance: Knowledgeable in implementing security controls and compliance standards using GCP Identity and Access Management (IAM) and Security Command Center. Cost Optimization: Experienced in optimizing costs on GCP using tools like Cost Explorer and Budgets, as well as utilizing features like sustained use discounts and preemptible VMs to minimize expenses. *****************