I am an accomplished freelance Database Design Professional with an extensive track record spanning over two decades. My expertise lies in crafting bespoke solutions that enhance the efficiency of personal computers, small businesses, and small LANs. While I'm proficient in a variety of development applications, my true specialization lies in creating tailored FileMaker Pro Solutions, spanning from FileMaker 5.0 to the latest FileMaker Pro. My experience is consistently put to practical use, as I continually expand my skill set through ongoing project work and personal studies. Please don't hesitate to reach out if you require any of the following services: • Custom Database Solutions: I can design and develop a customized database solution that aligns perfectly with your unique needs and the demands of your business. • Enhancements for Existing FileMaker Applications: If you have an existing FileMaker application, I can augment it by integrating new features and functionalities to meet your evolving requirements better. • Integration of Remote Databases: I specialize in linking remotely hosted databases, such as MySQL, to your FileMaker database, facilitating seamless data exchange and accessibility. • Web Service Integration with RESTful APIs: I have the expertise to enable FileMaker to interact with various web services using RESTful APIs, allowing you to harness the power of external data sources. • Web Scraping and Data Organization: I can efficiently scrape data from websites and import it into FileMaker, ensuring that the information is organized and structured for your specific needs. For any of these services or other database-related needs, please feel free to contact me. I look forward to assisting you in optimizing your data management solutions.

⏰ Available 24/7 – Long-term & High-impact Projects Hi, I’m Nghi, a Senior Data Engineer and Data Architect with a strong backend foundation, now focused on building high-performance analytics platforms, explainable data pipelines, and production-grade cloud architectures. I help companies transform unreliable, slow, or opaque data systems into scalable, well-documented, and business-trustworthy platforms. 🧠 WHAT I SPECIALIZE IN 🏗️ Data Architecture & Platform Design - Designing modern lakehouse & warehouse architectures - dbt-first analytics engineering with testing, freshness & lineage - Event-driven and batch hybrid pipelines - Data quality frameworks & SLA monitoring - Customer-facing data explainability systems Tools: dbt, Dagster, Airflow, Spark, Kafka, Snowflake, BigQuery, Redshift, PostgreSQL, DuckDB, ClickHouse ⚡ Database Performance Engineering - If your queries are slow, costs are high, or dashboards lag, This is my zone - Query plan analysis & index strategies - Warehouse cost optimization (Snowflake, BigQuery, Redshift) - OLTP & OLAP performance tuning - High-concurrency workload design 🔄 Reverse ETL & Operational Analytics - Syncing analytics back to CRMs & internal tools - Building real-time metrics pipelines - Feature-store style transformations 🕷️ Enterprise-grade Web Data Extraction - I don’t just scrape pages, I build durable data acquisition systems: - Complex ASP.NET, JS-heavy, authenticated & paginated systems - Anti-bot bypassing & failure-recovery pipelines - Headless browser automation + async scraping - Real-estate, finance, campaign-finance & marketplace platforms ☁️ Cloud Infrastructure - AWS | Azure | GCP - EMR / Dataproc / Glue / Dataflow / Synapse / BigQuery / Redshift - Terraform-based deployments - Cost-aware architectures - Kubernetes + Dockerized data services 🧪 What You Get Working With Me ✔️ Production-ready pipelines ✔️ Clean, testable dbt models ✔️ Well-documented architecture diagrams ✔️ Transparent data logic for non-technical stakeholders ✔️ Systems that scale beyond MVP ✔️ Honest advice and not over-engineering 🏆 Ideal Projects 👍 Data warehouse migrations 👍 Broken pipelines that need debugging & stabilization 👍 Analytics platforms that lack trust or explainability 👍 Performance bottlenecks costing thousands per month 👍 Long-term data platform ownership ❣️ Why Clients Stay Long-Term 🍀Clear communication 🍀 Business-first thinking 🍀 No black-box systems 🍀 I build systems others can maintain 🇻🇳🇻🇳🇻🇳🇻🇳 If your data platform feels fragile, slow, or impossible to explain to customers, I can fix that. Let’s make your data system something you can confidently stand behind.

"More Work Less Time" Our team will build a strategy that will tell the story behind your data. We’ll work with you to target and extract value from your data for immediate and sustainable results. Our top support services will continue to guide you at every stage of your journey. We’ll create the systems that will capture and optimize your data and take you to a new level of business success. Certified by: • Oracle • Klipfolio Data System Analyst and Consultant Expertise in the following skills: • Database Models • Oracle Database ( Certified DBA ) • Business Intelligence • Dashboard Development • Qlikview Developer • Klipfolio Developer ( Certified Expert ) • Tableau Developer • Excel Developer • SQL • Data Visualization • Extraction Transformation Loading • Warehousing • Development • API Connectivity • API Research and Development • Database Integration • Consultation • Data Science • Decision Support System Provide Data Connectivity and Analytics for the following Services ( but not limited to) : ✓Advertising: Bing Ads, DoubleClick Campaign Manager, Facebook Ads, Flurry, Google AdWords, LinkedIn Ads, Sizmek, Twitter Ads ✓Cloud Storage: Amazon Aurora, Amazon Redshift, Box, Cervinodata, Dataddo, Dropbox, Google BigQuery, Google Drive, Google Sheets, MSSQL, MongoDB, MySQL, OneDrive, Sharepoint, Snowflake ✓Data Store: Cervinodata, DB2, FTP/SFTP, Firebird, Google BigQuery, Oracle, PostgreSQL, Sybase, XMLA ✓Ecommerce: Shopify, WooCommerce ✓Email Campaign: AWeber, Act-On, ActiveCampaign, Campaign Monitor, Eloqua, Emma, HubSpot, Infusionsoft, MailChimp, Marketo, Pardot, SendGrid ✓Finance: Chargify, ChartMogul, FreshBooks, Fusebill, Intervals, QuickBooks, Recurly, Stripe, Xero ✓Human Resources: BambooHR, Glassdoor, Slack, Smartsheet, Taleo ✓IT: 3scale, GitHub, JIRA, Keen, New Relic, Pingdom, Twilio ✓Marketing: AWeber, Act-On, ActiveCampaign, Adobe Analytics, Ahrefs, Alexa, AskNicely, Bing Ads, Bitly, Buffer, BuzzSumo, Campaign Monitor, ChartMogul, Chartbeat, Dataddo, DoubleClick Campaign Manager, Eloqua, Emma, Eventbrite, Facebook, Facebook Ads, GoSquared, Google AdWords, Google Analytics, Google Search Console Marketing, HubSpot, Infusionsoft, Instagram, Kissmetrics, LinkedIn, Localytics, MailChimp, Marketo, Mixpanel, Moz, Pardot, Pinterest, Quintly, Radian6, SEMrush, SEOmonitor, STAT, Searchmetrics, SendGrid, Sendible, Sizmek, Swrve, Sysomos Heartbeat, Talkwalker, TrendSpottr, Twitter, Twitter Ads, Unbounce, UpContent, VKontakte, Vimeo, Webtrends, Wistia, Wordpress, YouTube, comScore Digital Analytix ✓Misc: 3scale, Email Attachment, Eventbrite, Excel, FTP/SFTP, Files, Google Calendar, Google Sheets, Klipfolio, Klipfolio Weather, OneDrive, RSS Feeds, Strava, Zapier, iFormBuilder ✓Mobile Analytics: 42matters, AppFigures, Flurry, Google Analytics, Localytics, Swrve, Twilio ✓Project Management: Asana, Basecamp 2, Basecamp 3, GitHub, Harvest, Podio, Slack, Toggl, Trello ✓Research and Development: JIRA, Keen, Lighthouse, Mixpanel, New Relic, Pingdom ✓Sales and CRM: Base CRM, Chargify, FreshBooks, Fusebill, Insightly, Intercom, Intervals, Oracle Sales Cloud, Pipedrive, PipelineDeals, ProsperWorks, Salesforce, Shopify, Stripe, Zoho ✓SEO: Ahrefs, Google Search Console Marketing, Moz, SEMrush, SEOmonitor, STAT, Searchmetrics, Siteimprove ✓Social Media: Buffer, Facebook, Instagram, LinkedIn, LinkedIn Ads, Pinterest, Quintly, Radian6, Sendible, Sysomos Heartbeat, Talkwalker, Twitter, VKontakte, YouTube ✓Support: AskNicely, CallRail, Desk.com, Freshdesk, Help Scout, Intercom, LiveAgent, ShoreTel Sky, Versature, Zendesk ✓Survey: Nicereply, SurveyGizmo, iFormBuilder ✓Web Analytics: ATInternet, Adobe Analytics, Alexa, Chartbeat, GoSquared, Kissmetrics, Linkpulse, Optimizely, Siteimprove, Unbounce, Webtrends, comScore Digital Analytix Work with any analytical, relational, and/or BI platform and fulfill projects as requested. Aim to over deliver before the deadline, and form a long-term partnership with Clients.

𝐂𝐨𝐫𝐞 𝐄𝐱𝐩𝐞𝐫𝐭𝐢𝐬𝐞 𝐚𝐧𝐝 𝐓𝐞𝐜𝐡𝐧𝐢𝐜𝐚𝐥 𝐏𝐫𝐨𝐟𝐢𝐜𝐢𝐞𝐧𝐜𝐲: My technical landscape encompasses a wide array of programming languages, frameworks, and tools, refined through years of hands-on experience: ◾ 𝐏𝐫𝐨𝐠𝐫𝐚𝐦𝐦𝐢𝐧𝐠 𝐋𝐚𝐧𝐠𝐮𝐚𝐠𝐞𝐬: Proficient in C#, JavaScript, TypeScript, SQL, with solid knowledge of Core PHP, HTML/HTML5 and CSS/CSS3. ◾ 𝐅𝐫𝐚𝐦𝐞𝐰𝐨𝐫𝐤𝐬 𝐚𝐧𝐝 𝐋𝐢𝐛𝐫𝐚𝐫𝐢𝐞𝐬: Deep expertise in .NET Framework, .NET Core, ASP.NET, Entity Framework, Angular, React, Vue.js, and Shopify's Liquid templating language. ◾ 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 𝐓𝐨𝐨𝐥𝐬 𝐚𝐧𝐝 𝐈𝐃𝐄𝐬: Skilled in Visual Studio, Visual Studio Code, Git, GitHub, Bitbucket, ensuring seamless version control and project management. ◾ 𝐖𝐞𝐛 𝐚𝐧𝐝 𝐔𝐈/𝐔𝐗 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭: Comprehensive front-end and back-end development capabilities, paired with UI/UX design proficiency using tools like Figma, Sketch, and Adobe XD. ◾ 𝐂𝐥𝐨𝐮𝐝 𝐂𝐨𝐦𝐩𝐮𝐭𝐢𝐧𝐠 𝐚𝐧𝐝 𝐒𝐞𝐫𝐯𝐢𝐜𝐞𝐬: Competent in deploying and managing applications on AWS, Microsoft Azure, and GCP, with a focus on delivering scalable SaaS solutions. ◾ 𝐀𝐏𝐈𝐬 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 𝐚𝐧𝐝 𝐈𝐧𝐭𝐞𝐠𝐫𝐚𝐭𝐢𝐨𝐧: Adept at integrating diverse APIs including payment gateways, social media, and custom Shopify apps, enhancing functionality and user experience. 🚀 𝐖𝐡𝐲 To 𝐂𝐡𝐨𝐨𝐬𝐞 𝐌𝐞? ◾ 𝐃𝐢𝐯𝐞𝐫𝐬𝐞 𝐏𝐨𝐫𝐭𝐟𝐨𝐥𝐢𝐨: From high-performance web applications to sophisticated e-commerce stores, my portfolio showcases a track record of successful projects and satisfied clients. ◾ 𝐈𝐧𝐧𝐨𝐯𝐚𝐭𝐢𝐯𝐞 𝐒𝐨𝐥𝐮𝐭𝐢𝐨𝐧𝐬: I specialize in crafting tailored solutions that not only meet but exceed expectations, leveraging the latest technologies to deliver exceptional results. ◾ 𝐂𝐥𝐢𝐞𝐧𝐭-𝐂𝐞𝐧𝐭𝐫𝐢𝐜 𝐀𝐩𝐩𝐫𝐨𝐚𝐜𝐡: Rated highly for my dedication to client satisfaction, I prioritize clear communication, transparency, and a collaborative project journey. ◾ 𝐂𝐨𝐧𝐭𝐢𝐧𝐮𝐨𝐮𝐬 𝐋𝐞𝐚𝐫𝐧𝐢𝐧𝐠: Passionate about technology, I continually explore emerging trends and advancements, ensuring my solutions are future-ready and cutting-edge.

⭐ 1,700+ hours delivered on Upwork | 14 completed projects | 10+ years building data platforms and full-stack products I help companies turn raw data into reliable pipelines and working products — end to end. Whether you need a scalable ETL pipeline, a machine learning model in production, or a complete web application, I handle architecture, development, and deployment so you get one accountable engineer instead of three separate hires. What I do best: 🔹 Data Engineering — Design and build robust ETL/ELT pipelines, data warehouses, and streaming systems using Python, SQL, Apache Spark, Airflow, Kafka, and cloud platforms (AWS/GCP/Azure). Clean, documented, monitored pipelines that don't break at 2 AM. 🔹 Data Science & ML — Exploratory analysis, predictive modeling, and ML deployment with pandas, scikit-learn, TensorFlow/PyTorch. I focus on models that actually ship, not notebooks that collect dust. 🔹 Full-Stack Development (MERN / MEAN) — Production-grade web apps with React or Angular frontends, Node.js/Express APIs, and MongoDB — plus REST/GraphQL API design, authentication, and CI/CD. 🔹 Java & Python Backend — Microservices, Spring Boot APIs, high-performance backend systems, automation scripts, and third-party integrations. Why clients work with me: ✅ Principal-level engineering experience — I have architected systems, not just written tickets ✅ Clear communication and honest timelines — you'll always know project status ✅ Clean, tested, documented code you can maintain after I'm gone ✅ Long-term reliability: 1,700+ hours logged with repeat clients on Upwork

High-Performance Architecture for Scalable Systems I am a Principal Backend Architect with over 10 years of experience in the .NET ecosystem. My expertise lies in transforming complex, high-stakes business requirements into stable, high-performance technical architectures. I don't just write code; I design systems that last. Whether it's Microservices, Domain-Driven Design (DDD), or deep-level database optimization, my focus is always on architectural integrity and long-term maintainability. Core Expertise: - .NET Mastery: Deep internals of .NET Core/Framework for mission-critical systems. - System Design: Expert in Clean Architecture, DDD, and scalable Microservices. - Database Engineering: High-level optimization for MSSQL, Azure SQL, and Redis. - Technology Stack: C#, Golang, SQL Server, MySQL, Azure Cloud. 💡 Strategic Workflow: To ensure 100% technical precision and provide exact architectural blueprints, I exclusively utilize text-based communication (Upwork Messages/Email). This "Deep Work" approach guarantees that every decision is documented, analyzed, and delivered with zero ambiguity

Greetings! 👋 I am Zeshan Ather, a Top 1% Expert-Vetted Professional on Upwork. Based in Silicon Valley, San Francisco, I bring over 11 years of experience in Data Analytics, Business Intelligence, and Data Science - including 9 years at Hewlett Packard Enterprise. With a Master’s in Computer Science (Data Science specialization, Software Development minor), I combine academic rigor with hands-on industry expertise to deliver enterprise-grade solutions. My career has been built on helping businesses unlock the full value of their data - whether through intuitive BI dashboards, scalable data pipelines, or AI/ML models that power predictive decision-making. 💡 What I Deliver: - Business Intelligence Dashboards: Power BI, Tableau, Qlik - executive dashboards, KPI tracking, drill-down analytics. - Data Engineering & Integration: ETL/ELT pipelines, SQL-based data modeling, Azure Synapse, Databricks, AWS Redshift, Snowflake. - Advanced Analytics & AI/ML: Forecasting, Churn Prediction, Recommendation Engines, NLP, Anomaly Detection, Predictive Maintenance. - Data Science Solutions: Machine Learning pipelines, Statistical Modeling, TensorFlow/Scikit-learn, Natural Language Processing, Experiment Design. - Cloud Data Platforms: Azure Data Factory, Azure Data Lake, Synapse Pipelines, AWS S3/Redshift, Snowflake, Delta Lake. 🔧 Technical Expertise: ✔️ BI Tools: Power BI, Tableau, QlikView, SSRS ✔️ Programming: Python, R, SQL, Scala, Spark, PSQL, DAX, MDX ✔️ Data Science: TensorFlow, PyTorch, Scikit-learn, Azure ML, NLP, Forecasting Models ✔️ Data Engineering: Azure Synapse, Data Factory, Databricks, Delta Lake, AWS Redshift, Snowflake ✔️ Databases: SQL Server, PostgreSQL, Vertica, MySQL ✔️ Modeling: Dimensional modeling, star/snowflake schemas, KPI frameworks ✔️ Security & Compliance: HIPAA, GDPR, PHI de-identification, RBAC, Row-Level Security 🌍 Trusted by Global Clients: - HPE (USA) - Data Analyst and Business Intelligence specialist - NHS (UK) – Healthcare dashboards & predictive models for patient outcomes. - Omni Tax Help (USA) – Sales analytics & forecasting models to improve client acquisition. - RealDefense (USA) – Product telemetry analytics + anomaly detection for cybersecurity products. - Inspire & Rozetree (USA) – Social media engagement analytics & automated campaign reporting. - MOTOR Magazine (USA) – Retail & operations analytics dashboards on AWS Redshift & Tableau. ✅ Why Work With Me: - 9+ years of end-to-end project delivery across BI, Data Science & AI. - Strong communicator: making complex analytics clear to business leaders. - Proven success with 100% client satisfaction & 5★ reviews on Upwork. - Trusted by enterprises across healthcare, finance, marketing, retail, and cybersecurity. 👉 Whether you need BI dashboards, predictive ML models, or enterprise-scale data pipelines, I deliver outcomes that move the needle for your business.

💡 I help businesses fix, modernize, and scale real-world .NET applications while building secure, high-performance systems from end to end. With 10+ years of experience, I’ve delivered enterprise platforms, SaaS products, APIs, and identity solutions across multiple industries. My strength is working on complex production systems — improving performance, reducing technical debt, and safely evolving legacy applications into modern architectures. I combine full-stack development expertise with deep knowledge of enterprise authentication (SSO/SAML) to deliver secure and scalable solutions. 🚀 What I Can Help You With ✔ Maintain and enhance existing ASP.NET / ASP.NET Core applications ✔ Build scalable SaaS platforms and enterprise web apps ✔ Develop secure REST APIs and microservices ✔ Implement SSO, SAML, OAuth, and identity integrations ✔ Modernize legacy WebForms / MVC apps to ASP.NET Core ✔ Optimize SQL Server and application performance ✔ Integrate third-party APIs and cloud services ✔ Deliver responsive UI with modern frontend frameworks 🔧 Core Technical Expertise 👉 Backend & Architecture ASP.NET Core, MVC, Web API, WebForms (maintenance & migration) C#, .NET Framework, .NET 6/7/8 Entity Framework / EF Core, LINQ Clean Architecture, SOLID principles Microservices & distributed system design 👉 Identity & Security (Key Differentiator) SSO & SAML implementations OAuth2 / OpenID Connect / JWT IdentityServer, Azure AD, Auth0 integrations Secure enterprise authentication & authorization 👉 Frontend Development Angular, React, Blazor JavaScript, jQuery Bootstrap & responsive UI Telerik, Kendo UI, DevExpress 👉 Databases & Performance SQL Server (query tuning, indexing, optimization) Stored procedures, migrations & refactoring Performance debugging in production systems 👉 Cloud, Tools & Integrations Azure-ready applications & IIS deployments AWS integrations (EC2, S3 – working level) Git, TFS, SVN Payment gateways, Google APIs, third-party integrations XML / JSON integrations & automation workflows ⭐ Why Clients Work With Me ✅ Strong debugging skills in complex legacy systems ✅ Clean, scalable, production-grade code ✅ Fast understanding of existing codebases ✅ Clear communication & proactive delivery ✅ Long-term modernization mindset I focus on solutions that increase stability today and scalability tomorrow. 🎯 Typical Projects Legacy .NET modernization SaaS platform development API ecosystems & integrations Enterprise SSO / identity solutions Performance tuning & architecture improvements 🕓 Availability • 40 hrs/week • Flexible across US, UK, EU & AU timezones • Open to long-term collaborations 🤝 Let’s Connect If you need a senior developer who can own complex systems, communicate clearly, and deliver secure scalable solutions, I’d be happy to help. 🔷 If your application is slow, fragile, or difficult to maintain, I can step in, understand it quickly, and improve it safely. 👉 Send an invite and let’s discuss your project. 𝗞𝗲𝘆𝘄𝗼𝗿𝗱𝘀 Senior .NET Engineer, ASP.NET Core, ASP.NET MVC, WebForms, C#, SQL Server, Performance Optimization, Legacy System Modernization, API Development, AI Integration, Azure, IIS, Entity Framework Core, Database Optimization, Migration, SignalR, Blazor, Angular

* 19+ years experience in Oracle Developer (SQL, PL/SQL) and oracle DBA. * Expertise area include Installation, patching, backup / recovery, export / import, RAC, data guard, goldengate, migration, AWS RDS, PL/SQL, Bulk Data Load. * Certified Oracle DBA (Certification in Oracle 11g OCP)

Hi there! I'm Murtaza, a data analyst with over 3 years of experience. After completing my MSc from the University of Minnesota Duluth, I delved into a data career and helped businesses find clarity in their numbers for agritech, ed-tech, and healthcare. I'm highly interested in collaborating, and here's how I can help your businesses- A. End-to-end Business Intelligence dashboard with Power BI with data integration from SQL-based databases, MS SharePoint, custom APIs, and flat files. I have experience writing complex SQL queries. B. Making infographics with creative design. It can be a high-level presentation with charts, numbers, and short texts designed with creative tools like Adobe Creative Suite, Canva, Figma, etc. C. Notebook-style text-heavy analytics report with tools like pandas, Python, and LaTeX. D. Group training or individual training on Power BI- I have certifications from Microsoft, and I have past teaching experience. As a human, I champion empathy and stress a listening-first approach. When I work, I pay attention to details. During delivery, I provide multiple revisions. Overall, my goal is to become your trusted and skilled partner. Try me for your next project, and you'll get a wonderful outcome. Guaranteed! Thanks