⭐ || TOP RATED PLUS || ⭐ From robust infrastructure to advanced analytics, I provide the tools and support you need to drive innovation and achieve success in the digital age. 🏆 Achieved Top-Rated PLUS Freelancer status (Top 3%) with a proven track record of successfully completing 10 projects. Experienced Data Engineering and Analytics leader with expertise in building and growing amazing teams. Expertise includes data strategy and planning, data engineering, reporting and insights. Experience with 'Big Data' cloud technologies (Spark/hadoop/hive/pig/presto/Redshift/Snowflake), traditional databases (Oracle, Teradata) and traditional BI platforms (MS BI) and visualization tools (Tableau), Data pipeline/ETL architecture, and overall business alignment for optimal data impact. Specialties Data Warehouse, Data Engineering, Data Architecture, Data Modeling, Big data batch processing, Stream processing, Data tools, Data Analytics, Data operations and Data lifecycle management, and enabling Experimentation and Machine learning. Some of the technologies that we work with are: - Power BI - Azure cloud services - SQL Server - Snowflake - EDA - Tableau - Python - BigQuery - Microsoft Excel (Macro, VBA) - Web development using PHP as well as node.js - PySpark - Looker Studio - And many more... You possess the data? Fantastic!! I can assist you in scrutinizing it using Python, encompassing exploratory data analysis, hypothesis testing, and data visualization. Do you boast Big Data? Even more splendid!! I am adept at aiding you in the cleansing, transformation, storage, and analysis of large datasets, employing big data technologies and deploying them using cloud services such as AWS and Azure Cloud. Are you keen on monitoring business KPIs and metrics? No issue at all!! I can even guide you through the development of reports using Tableau and PowerBI, ensuring you consistently stay at the forefront of your business. Anticipate unwavering integrity, superb communication skills in English, technical proficiency, and enduring support for the long term.

"Work with David was excellent. He knows his stuff!"" I've been helping businesses large and small gain insights from their data for over 20 years. I enjoy pushing technical limits, solving difficult problems, writing clean, efficient queries and building intuitive and beautiful data visualizations for my clients.

Focusing on Database Administration, Network & System Administration, Programming, and Networking with a flare for integration using various technologies. MS SQL Query Tuning/Optimization, jQuery, JavaScript, AWS Billing Optimization and infrrastructure setup including EC2 Instances, PowerShell scripts, and Cold Fusion. I am a well-rounded senior-level IT consultant with very diverse skills & experiences in many industries and countries. I have a get-it-done attitude, and I look for creative ways to achieve a solution that means fewer headaches for the client. My experience starts from the days when DOS was all we had. This knowledge means I know what is really behind the window versus those that only see the window itself; the façade. Many people know how to drag and drop a button onto a form in the studio, but can they write the code to make it work on the backend without a WYSIWYG interface? I usually can. I once challenged a .Net programmer to create code, and I would write classic ASP with C# (on the backend), and it was faster to code and just as efficient and scalable. Back in the dBase days, I wrote an Indexing routine that was faster than the one built-in to the software. These days I prefer to have SQL Server on the backend. Excel, Access VBA are no problem. The 3 J's: JavaScript, jQuery, JSON are also no problem. I prefer to do remote consultations since I travel all over the world.

I architect, build, and implement AI systems that turn business data into decisions - conversational analytics, predictive ML models, and autonomous AI agents that automate real workflows. Backed by 16+ years and 400+ delivered projects, I bridge the gap most AI freelancers can't: I don't just prototype models, I design the end-to-end solution and engineer the data foundation, pipelines, and cloud architecture that make AI production-ready, secure, and scalable. I work as a true solution partner - architecting, executing, and implementing around each client's custom business use case, timeline, and budget. From a single AI agent to a full data-and-AI platform, I right-size the solution so you get maximum value without overspending. WHAT I DELIVER • Conversational AI & "Chat with your data" - Ask questions in plain English and get instant answers, trends, and forecasts from your CRM, sales, finance, HR, and ops data. Built on Vertex AI, Gemini Pro, LLMs, and BigQuery ML with retrieval-augmented generation (RAG) over vector databases (pgvector, Vertex AI Vector Search). • Agentic AI & Process Automation — Autonomous, multi-step AI agents that complete tasks, not just chat. I design and ship end-to-end automations with n8n and Make, integrating LLMs directly into your business processes for measurable efficiency gains. • Predictive Analytics & Custom ML — Forecasting, churn prediction, classification, and anomaly detection using BigQuery ML and Python (TensorFlow, PyTorch, scikit-learn, XGBoost). • Solution Architecture & Implementation - End-to-end ownership: discovery, architecture, build, deployment, and handover - tailored to your use case and budget, with scalability, security, and compliance designed in from day one. GEN AI & MACHINE LEARNING • Vertex AI (Gemini Pro / Flash), BigQuery ML, Vertex AI Agent Builder & RAG pipelines • LLM integration, prompt & context engineering, embeddings & semantic search • Vector databases: pgvector (PostgreSQL), Vertex AI Vector Search • Conversational AI, AI chatbots & assistants grounded in your own knowledge • Agentic workflows and AI-driven automation with n8n and Make (Integromat) • Custom ML model training & deployment: TensorFlow, PyTorch, scikit-learn, XGBoost, Pandas, NumPy - for forecasting, recommendation, churn, and anomaly detection • MLOps: model training, evaluation, monitoring, and lifecycle management DATA ENGINEERING & WAREHOUSING (the foundation that makes AI work) • ETL/ELT: Dataflow, Datastream, Dataproc, Cloud Functions (Python/Node.js), dbt, AWS Glue, SSIS, Airbyte, Fivetran • Real-time & batch ingestion: Google/Facebook Ads, GA4, Search Console, Salesforce, REST APIs, JSON/CSV, SQL & NoSQL databases • Warehousing & modeling: BigQuery, Snowflake, Redshift, Azure Synapse, SQL Server, Oracle - star/snowflake schemas, partitioning, clustering, and performance tuning • Databases: PostgreSQL (pgvector), MySQL, MongoDB, MariaDB, Oracle, SQL Server, AWS RDS - deployments, upgrades, and zero-downtime migrations BI & ANALYTICS • Executive-ready, AI-augmented dashboards in Looker Studio, Power BI, Tableau, Looker, QuickSight - KPIs for Marketing, Sales, Finance, HRMS, Operations & CRM CLOUD & GOVERNANCE • Multi-cloud: GCP (primary), AWS, Azure • Secure, scalable architectures: IAM, RBAC, row-level security, VPCs, encryption • Data governance & compliance: access/change management, classification, auditing, GDPR PROVEN TRACK RECORD • 16+ years experience • 400+ successful projects • 50+ data warehouses • 200+ pipelines & dashboards • 30+ zero-downtime migrations • 50+ business-application implementations (CRM, ERP, HRMS, Finance, Supply Chain, SIS/LMS, EHR, Banking, Hospitality) WHY CLIENTS CHOOSE ME I combine a business mindset with deep technical excellence. I architect the right solution for your goals and budget - not the trendiest - and own the full lifecycle from raw data to AI-driven insight and automation. You get solutions that ship on time, within scope, and built to last. Tell me the outcome you're after - a conversational analytics assistant, an AI agent that automates a workflow, or a predictive model - and I will architect the fastest path to value. Skills tags (order matters - AI first) Generative AI · Vertex AI · Gemini · LLM · Conversational AI · RAG · Vector Database · Machine Learning · BigQuery · n8n · Make · Python · TensorFlow · Solution Architecture · Data Engineering

Experienced .NET developer with 17+ years in building POS systems, API integrations, ERP modules, and full-stack solutions using .NET Core, C#, and AngularJS. I specialize in high-performance backend systems, secure API development, and responsive frontend designs using Angular. I’ve successfully delivered cloud-based solutions and desktop applications for retail, hospitality, and enterprise businesses.

Microsoft Certified Professional 9+ years IT consulting 10+ years programming (, C#, SQL, Javascript) 10+ years Dynamics CRM Implementation, Architecture, Development and Administration 9+ years leading technical teams at the enterprise level 3+ years government consulting 10+ years large volume ETL 10+ years systems integration 1+ years AI Implementation and Integration Source Control: Azure DevOps, TFS, IBM Rational Backend: SQL Server, MySql, SQL, PostGres Reporting: SSRS, Power BI ETL: SSIS, Scribe, Azure Data Factory Client Side: Javascript, HTML, CSS Server Side: C# Cloud: Azure AI: Chat GPT. Copilot Certifications: MS MB2-707 Dynamics CRM, ICAgile Certified Professions, Scribe Insight Security Clearances: NACI, VAHBI (Public Trust - High)

I am an SAP Business One Expert | SQL & HANA Specialist | Integration & Reporting Professional I am an SAP Business One consultant with 9+ years of experience, helping businesses across diverse industries streamline operations, improve reporting, and unlock the full potential of SAP B1. My expertise spans implementation, integration, migration, reporting, and cloud deployment, making me a reliable partner for end-to-end ERP needs. Key Expertise- Database Management: Proficient in SQL & HANA, ensuring robust performance, optimization, and smooth administration. Reporting: Hands-on with SQL Queries, Crystal Reports, and Power BI, delivering insightful, actionable dashboards for smarter decisions. Integration: Expert in SAP B1 integrations via BPA, Service Layer, and DI API, connecting with platforms such as Salesforce, HubSpot, Shopify, and SANA e-commerce. Add-ons & Extensions: Extensive experience with Boyum B1UP, Print & Delivery, E-WayBill, E-Invoice, WhatsApp for B1, GST Add-on, ChatGPT for B1, and others to extend SAP B1 functionality. Migration & Deployment: Managed multiple SQL → HANA migration projects, ensuring minimal downtime. Skilled in deploying SAP B1 on AWS & Azure Cloud, leveraging scalable, secure infrastructure. Specialized Integrations: - SANA E-commerce for seamless online sales. - SmartFreight courier solutions for logistics. - Produmex & MilnerBrown WMS implementations for optimized warehouse operations. - SAP B1 & Salesforce Integration ERP Expertise: In-depth knowledge of SAP Business One ERP, offering tailored ERP solutions that fit business requirements. Why Work With Me? I take a collaborative, business-first approach, ensuring clear communication, transparency, and timely delivery. My solutions are designed not just to meet technical requirements, but to drive efficiency, growth, and ROI. Whether you need support with database management, advanced reporting, system integration, cloud deployment, or ongoing SAP B1 support, I can deliver high-quality results backed by proven experience. Let’s connect and discuss how I can help make your SAP Business One project a success.

C#, ASPNET MVC, MS SQL Server, IIS, PHP, MySQL/MariaDB, REST and SOAP APIs, complex system integrations (Brivo, Eagle Eye, CICS, IMS), payment gateway integrations (Stripe, PayPal, etc.), B2B software integrations (QuickBooks, JobDiva, and others), with 20+ years of experience across the full software development life cycle. Over the last 10+ years, I have been actively working with cloud environments such as AWS and Azure, designing, deploying, and operating scalable, secure, and production-grade systems. I also bring 15+ years of experience with HTML, CSS, Vanilla JavaScript, and multiple JavaScript frameworks, delivering high-quality, responsive web applications used in real-world production environments. Expertise includes ERP and CRM implementations, Business Intelligence, KPI definition, process mapping and automation, and bespoke software development — always with a strong focus on results, sustainability, and business clarity. In recent projects, my role has leaned heavily toward Solution Architecture, including system design, integration strategy, legacy modernization, and cloud-ready architectures — always balancing technical decisions with business impact. Last 2 years dedicated to create strategies, policies and practices to use AI sustainabily, focused in get the most of the technology at reasonable costs, preventing code slop and sdlc overstress. I particularly care about getting your team ready to be the next generation of developer fully AI ready. Most importantly, I know how to help your company grow, your startup win, and your product shine by applying all my skills to one thing: business success. If you are looking for organization, versatility, architectural thinking, and a strong focus on results, it will be a pleasure to work with you.

With 11 years of experience in 📊Oracle Forms & Reports, 📊Oracle APEX, 📊Oracle EBS, 📊Oracle Fusion Financials, and 📊Oracle BI, I specialize in delivering comprehensive and customized solutions. My expertise spans various modules, including 📝Accounts Payable,📝 Accounts Receivable, 📝Fixed Assets, 📝General Ledger, 📝Cash Management, and 📝Purchasing. Skills and Expertise Oracle EBS 📊 Extensive experience in implementing and customizing Oracle E-Business Suite, including Financials, Supply Chain Management, and Human Resources. Oracle Fusion Financials 💳 Specialized in Oracle Fusion Financials, with a focus on implementation, customization, and integration. Oracle Forms and Reports 📝 Skilled in developing and maintaining Oracle Forms and Reports for diverse business applications. Oracle BI 📈 Proficient in Oracle Business Intelligence, including BI Publisher and OBIEE, for designing and delivering analytical reports and dashboards. Database Administration 🔒 Expert in Oracle Database Administration, including performance tuning, backup and recovery, and security management. Application Development 💻 Strong background in C# .NET, .NET MVC, and Entity Framework, with extensive experience in MS SQL Server. ERP/CRM Implementation ⚙️ In-depth knowledge of ERP/CRM modules in Odoo, Oracle EBS, and Fusion, with hands-on experience in multi-currency, multi-warehouse, and multi-tax environments. Custom Module Development 🛠️ Expertise in developing custom modules for Odoo, including complex workflows and integrations. Project Management 📅 Proven track record in leading and managing full-cycle implementation projects, from requirements gathering to go-live support. Core Competencies 💻 Programming Languages: Java, C#, Python, JavaScript, PL-SQL 🔨 Frameworks: .NET, Spring, Django, Angular, React, Vue.js 📊 Database Management: SQL Server, Oracle, PostgreSQL 📈 Project Management: Agile, Scrum 🔄 CI/CD Tools: Jenkins, Travis CI, GitLab CI/CD ☁️ Cloud Platforms: AWS, Azure, GCP Professional Experience Senior Oracle Database Administrator Managed and optimized Oracle databases for high performance. Ensured data integrity and implemented robust security measures. Senior Oracle Business Application Developer Developed and maintained Oracle business applications. Translated business requirements into efficient technical solutions using Oracle 11g Forms and Reports. C# .NET Specialist using MS SQL Server Designed and developed scalable applications using C# and .NET framework. Implemented complex queries and managed databases with MS SQL Server. Odoo Developer using PyCharm and Python Customized and extended Odoo ERP solutions. Developed modules and integrated third-party services using Python. Worked extensively on Odoo ERP/CRM modules, including Sales, Inventory, Accounting, Human Resources, Manufacturing, and Project Management. .NET MVC and Entity Framework Developer Created dynamic web applications using .NET MVC. Utilized Entity Framework for efficient database interactions. Key Skills 📚 Business Acumen: Deep understanding of business processes and the ability to translate them into technical solutions. 🧩 Problem-Solving: Strong analytical skills to identify and solve complex problems. 🗣️ Communication: Excellent verbal and written communication skills for effective collaboration. 👥 Leadership: Experience leading projects and mentoring junior developers. Tools and Technologies 🔧 Version Control: Git (GitHub, GitLab, Bitbucket) 🐳 Containerization: Docker, Kubernetes ✅ Testing: NUnit, JUnit, PyTest, Selenium 🖥️ IDEs: Visual Studio, IntelliJ IDEA, PyCharm, Eclipse, VS Code 🔧 DevOps: Terraform, ELK Stack, Prometheus, Grafana Let’s Collaborate I'm passionate about leveraging my technical expertise to deliver high-quality, efficient, and innovative solutions. If you're looking for a dedicated professional to elevate your business applications, let's connect!

I have been in IT field for over 30 years now. I have also been developing over 25 years. I have worked with mainframes, mid size frames and servers of all sizes. I have programming language experiences in RPG, CL, Visual Basic, Visual RPG, Object Oriented programming. I have developed full ERP systems using Microsoft Access and Microsoft SQL database for backend. I have a complete understanding in accounting and finance. My strength is taken any process and making it more streamlined and efficient. I have help over thirty different manufacturers stream line their process of the production and shipping . I have worked in all areas of barcoding and scanning. I have worked and developed many EDI systems and worked with large customer and suppliers to connect them using EDI integration. I also Work a lot with QuickBooks, Sage 50, Southware ERP , Epicor, NetSuite, Odoo and multiples other ERP system. I was a IT directory of large corporations for over 15 years before starting my IT company. .