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Looking for a position for re-entering the workforce after taking a break to raise kids while staying in touch with Oracle D2k, SQL, PL/SQL and also learnt latest technologies like Oracle APEX, Python and Selenium with Python, API, Request, web scraping, beautiful soup, CSS, HTML, Import and Export to CSV or Excel, Postman etc through various online courses

𝗚𝗼𝘁 𝗮 𝗰𝗼𝗺𝗽𝗹𝗲𝘅 𝘀𝘆𝘀𝘁𝗲𝗺 𝘁𝗵𝗮𝘁 𝗻𝗲𝗲𝗱𝘀 𝘁𝗼 𝘀𝗰𝗮𝗹𝗲, 𝗮 𝗹𝗲𝗴𝗮𝗰𝘆 𝗽𝗹𝗮𝘁𝗳𝗼𝗿𝗺 𝘁𝗵𝗮𝘁 𝗻𝗲𝗲𝗱𝘀 𝗺𝗼𝗱𝗲𝗿𝗻𝗶𝘇𝗮𝘁𝗶𝗼𝗻, 𝗼𝗿 𝗮 𝗱𝗮𝘁𝗮 𝗽𝗶𝗽𝗲𝗹𝗶𝗻𝗲 𝘁𝗵𝗮𝘁 𝗻𝗲𝗲𝗱𝘀 𝘁𝗼 𝗮𝗰𝘁𝘂𝗮𝗹𝗹𝘆 𝘄𝗼𝗿𝗸? 𝗧𝗵𝗮𝘁'𝘀 𝗲𝘅𝗮𝗰𝘁𝗹𝘆 𝘄𝗵𝗮𝘁 𝗜 𝗱𝗼. I'm a Senior Software Architect and Development Leader with 30+ years building enterprise-grade systems — from cloud-native SaaS platforms and real-time data pipelines to payment engines and cloud migrations. I design architecture that makes your product reliable, scalable, and maintainable. 𝗪𝗛𝗔𝗧 𝗜 𝗗𝗘𝗟𝗜𝗩𝗘𝗥: 𝗖𝗹𝗼𝘂𝗱 𝗔𝗿𝗰𝗵𝗶𝘁𝗲𝗰𝘁𝘂𝗿𝗲 (𝗔𝘇𝘂𝗿𝗲 / 𝗚𝗖𝗣 / 𝗔𝗪𝗦) I design and build production systems — multi-tenant SaaS, microservices on AKS, serverless with Azure Functions and AWS Lambda. Architected solutions using 30+ Azure services including Cosmos DB, Data Factory, Databricks, APIM, Application Gateway. Also work with GCP (BigQuery, Apigee), AWS (EC2, Lambda, S3, RDS), and Cloudflare (Zero Trust, CDN). 𝗘𝗧𝗟 & 𝗗𝗮𝘁𝗮 𝗣𝗶𝗽𝗲𝗹𝗶𝗻𝗲𝘀 I build pipelines at real-world scale. Most recently designed ETL streaming trade data from 160 servers in real time using Kafka, Spark Structured Streaming, Delta Lake, and Databricks — feeding into BigQuery. At Microsoft, built migration pipelines moving billions of accounts with bidirectional sync. 𝗙𝘂𝗹𝗹-𝗦𝘁𝗮𝗰𝗸 𝗗𝗲𝘃 (.𝗡𝗘𝗧 / 𝗚𝗼 / 𝗡𝗼𝗱𝗲.𝗷𝘀 / 𝗣𝘆𝘁𝗵𝗼𝗻 / 𝗥𝗲𝗮𝗰𝘁) Backends in C#/.NET Core, Go, Node.js, Python. RESTful APIs, microservices, frontends with React/NextJS and Angular. Delivered SaaS platforms, payment gateways, and B2B systems for Fortune 500 companies including FedEx Office, Staples, and Office Depot. 𝗔𝗜/𝗠𝗟 𝗗𝗮𝘁𝗮 𝗜𝗻𝗳𝗿𝗮𝘀𝘁𝗿𝘂𝗰𝘁𝘂𝗿𝗲 At Microsoft, built data layers and ETL frameworks powering AI/ML on O365 Exchange — developed the data layer for Microsoft's "Aether" AI/ML framework, which became the foundation for Microsoft Graph Data Connect. 𝗣𝗮𝘆𝗺𝗲𝗻𝘁𝘀 & 𝗦𝗲𝗰𝘂𝗿𝗶𝘁𝘆 Built credit card processing engines, payment gateways certified with Visa International and First Data, in-house Visa/MasterCard systems. Expert in PCI DSS, PKI/SSL/TLS, encryption (RSA, AES), smart cards (EMV, MULTOS, JavaCard), SSO/OAuth/SAML. 𝗧𝗲𝗰𝗵𝗻𝗶𝗰𝗮𝗹 𝗟𝗲𝗮𝗱𝗲𝗿𝘀𝗵𝗶𝗽 Led teams of 40+ engineers across U.S. and Europe. Agile processes, CI/CD pipelines, observability (Prometheus, Grafana, OpenTelemetry). Architectural oversight to 60 developers across multiple product lines. 𝗡𝗢𝗧𝗔𝗕𝗟𝗘 𝗥𝗘𝗦𝗨𝗟𝗧𝗦: - Multi-tenant SaaS prop trading platform from legacy — improved scalability, reduced costs - Real-time risk pipelines processing data from 160 servers, sub-second latency - At Microsoft: ETL migrating billions of accounts from Hotmail to O365 Exchange Cloud - Architecture lead for subscription billing at $20B+ IT company, Salesforce migration - Web-to-print SaaS: 30+ plants, 20K+ brokers (FedEx Office, Staples, Office Depot) - Certified payment gateways with Visa International (VITAL) and First Data (FDMS) 𝗛𝗢𝗪 𝗜 𝗪𝗢𝗥𝗞: I understand what you're trying to achieve, ask the right questions, identify risks early, and propose architecture that fits your budget and timeline. Clear communication, realistic estimates, no surprises. Hands-on dev, technical architecture, or fractional CTO — I adapt to your project. 𝗧𝗘𝗖𝗛𝗡𝗜𝗖𝗔𝗟 𝗦𝗞𝗜𝗟𝗟𝗦: 𝗟𝗮𝗻𝗴𝘂𝗮𝗴𝗲𝘀: C#, Python, Go, C/C++, Java, TypeScript, JavaScript, SQL, PHP 𝗕𝗮𝗰𝗸𝗲𝗻𝗱: .NET Core/.NET 6+, ASP.NET MVC, Blazor, Node.js, REST/gRPC APIs, Spring MVC 𝗙𝗿𝗼𝗻𝘁𝗲𝗻𝗱: React, NextJS, Angular, HTML5/CSS, Bootstrap 𝗖𝗹𝗼𝘂𝗱: Azure (AKS, Functions, Cosmos DB, Azure SQL, APIM, Application Gateway, Redis, ADLS, Event Hub, Databricks, ARM), AWS (EC2, Lambda, S3, RDS), GCP (BigQuery, Apigee), Cloudflare 𝗘𝗧𝗟: Azure Data Factory, Spark Streaming, Delta Lake, Kafka, RabbitMQ, Informatica, SSIS 𝗗𝗮𝘁𝗮𝗯𝗮𝘀𝗲𝘀: MSSQL, MySQL, PostgreSQL, Oracle, Cosmos DB, MongoDB, Hadoop/HDFS, BigQuery, Azure Synapse 𝗔𝗜/𝗠𝗟: Data layer architecture for ML workloads, Hadoop-based AI/ML ETL, ADF ML pipelines, Computer Vision 𝗗𝗲𝘃𝗢𝗽𝘀: Azure DevOps, GitLab CI/CD, Docker, Kubernetes, Git, Terraform 𝗧𝗲𝘀𝘁𝗶𝗻𝗴: TDD, MSTest, Moq, Playwright, Artillery 𝗠𝗼𝗻𝗶𝘁𝗼𝗿𝗶𝗻𝗴: App Insights, Prometheus, Grafana, Loki, OpenTelemetry 𝗦𝗲𝗰𝘂𝗿𝗶𝘁𝘆: PKI, SSL/TLS, RSA/AES, PCI DSS, Kerberos, EMV, HSM 𝗔𝘂𝘁𝗵: OAuth 2.0, OpenID Connect, SAML, SSO, LDAP, Azure AD/Entra ID 𝗕𝟮𝗕: cXML (Ariba, SAP, Coupa), EDI, Visa/MC processing 𝗔𝗿𝗰𝗵𝗶𝘁𝗲𝗰𝘁𝘂𝗿𝗲: Microservices, Multi-tenant SaaS, Event-driven, DDD, SOLID, Agile/Scrum/Kanban/SAFe

I am very experienced developer using Excel, VBA and SQL, MS Power Platform, BI, Flows, PowerApps, MS Access. I have been developing applications for small businesses for over 20 years. I have saved thousands of hours of manual work for small companies and businesses. I have excellent understanding of business needs and requirements interpretation skills because I have worked on both sides- business and IT. I have an extensive experience developing applications for small businesses and business units withing larger organizations, designing reports, automations, ETL, data workflow and analysis, data quality assurance, etc. I am adept at gathering necessary requirements from stakeholders and translating into actual code, conducting deep analysis of large data sets. I am results oriented and a motivated self-starter with a strong sense of urgency, quick learner, able and willing to work in challenging situations with aggressive timelines. Excellent communication skills.

Specialized in Systems Analysis and part-time maintenance (up to 20-30 hours/week) for legacy Powerbuilder / Oracle / Sybase / MS SQL Server environments. Productive on Day One. With over 20 years of specialized experience in PowerBuilder (v6.5 through v2022) and complex database environments, I provide the rare expertise needed to maintain, debug, and enhance mission-critical legacy applications. I specialize in the "plumbing" of legacy apps—ensuring stable SQLCA.DBMS connectivity and data integrity during system transitions. I possess the unique ability to step through established "black box" applications with little to no training, providing immediate value. Beyond coding, I bridge the gap between legacy systems and future goals by documenting existing functionality for developers, business analysts, and stakeholders to assist in eventual modernization strategies. Core Competencies: PowerBuilder Mastery: Expert work with PB versions 6.5, 8, 12.5, and 2016+, including the DIAMOND® Enterprise System and PFC frameworks. Database Expertise: Senior-level SQL, SQLCA.DBMS configuration, and Stored Procedure development for Oracle (Legacy to 19c), Sybase (v10, v12), and SQL Server. Modernized Documentation: I leverage modern AI-assisted tools to accelerate the analysis and summarization of legacy PowerScript logic, ensuring every finding is manually verified for technical accuracy. Industry Knowledge: Deep experience including Health Insurance (Diamond), Manufacturing, POS Systems, and Compliance Reporting. Whether you need urgent bug fixes, long-term system maintenance, or a technical guide to assist your modernization strategy, I am at ease collaborating with DBAs and Project Managers to deliver stable, documented results. Whether you need urgent bug fixes, long-term system maintenance, or a technical guide to assist your modernization strategy, I am at ease collaborating with DBAs and Project Managers to deliver stable, documented results.

As an Expert-Vetted freelancer, I am in the TOP 1% of ALL talent on Upwork meaning you're working with the best of the best! 🥇 With over a decade of work experience using Oracle technologies I've become an expert at helping clients bring their ideas to life. I have developed multiple innovative Oracle APEX based applications which customers are using to run or support their business . I am a certified Oracle APEX developer with expert level skills in PL/SQL and SQL. Adept at crafting dynamic solutions that transform complex business requirements into easy to use software. I've worked on many projects which combine Oracle APEX with OCI and REST API's to enhance and truly give users an amazing experience! BENEFITS OF WORKING WITH ME 🚀SPEED You need a software stack that is flexible, adaptable, and responsive. Which is I specialize in low-code tools, like Oracle APEX, so that your business can get up and running quickly 📈FINANCIAL GROWTH Streamline your processes, optimize your technology stack, and unlock new revenue opportunities. I can help your business achieve measurable financial success and long-term scalability. 📞TRANSPARENT COMMUNICATON Expect regular updates, clear explanations and honest advice. My goal is to understand your requirements and then bring them to life just how you imagined. ✨TAILORED SOFTWARE SOLUTIONS No matter your industry or line of business our Oracle APEX solutions can meet your project's unique demands. We can adapt the theme style to meet your expectations 📨 NEXT STEPS Send me a message to discuss your project. I'm always willing to share my knowledge, and gives you a preview to see what working together could be like!

💼 23+ Years as an Oracle DBA and Consultant 🔐 CompTIA Security+ Certified 🏅 Oracle Database 10g Administrator Certified Associate 💻 Linux Administration Certified 🧾 U.S. Citizen 🛡️ U.S. Top Secret Clearance 🎓 Master’s in Information Technology An Oracle expert who handles everything from database administration to custom development and cloud solutions, bringing more than two decades of experience to your project. I specialize in building, optimizing, and managing Oracle systems that help businesses run efficiently and securely. Available for both standalone and team-based engagements. Oracle Database Administration & Architecture • Oracle installation, configuration, and upgrades • Performance tuning and query optimization • Indexing, partitioning, and capacity planning • High-availability and disaster recovery (RAC, Data Guard, backup & recovery) • Database security, user management, and compliance • Monitoring, troubleshooting, and production support Data Engineering & ETL • Data migration and integration projects • ETL pipelines using PL/SQL and SQL*Loader • Data validation, transformation, and optimization • Data warehousing support • Cross-database experience (Oracle, SQL Server, PostgreSQL, MySQL) Oracle PL/SQL & APEX Development • Advanced PL/SQL development (packages, procedures, functions, triggers) • Dynamic SQL, collections, bulk operations, and tuning • Oracle APEX installation, administration, and troubleshooting • Low-code ERP-style applications • Dashboards, workflow automation, and internal business tools Modern Backend & Full-Stack Systems • Backend development with Node.js, Express.js, and Java • RESTful and GraphQL API design and optimization • Secure authentication and authorization (JWT, OAuth, Bcrypt) • Server-side logic, data flow optimization, and integrations • Payment and third-party integrations (Stripe, WebSockets) Web & Application Development • Full-stack development using MEAN and MERN stacks • Front-end frameworks: React, Angular, TypeScript • Clean, maintainable, and well-documented codebases • Scalable application architecture and long-term support Cloud, DevOps & Deployment • Oracle Cloud Infrastructure (OCI) and AWS • Cloud migrations and environment setup • Docker-based deployments and CI/CD pipelines • Git-based workflows and production release support Why Work With Me? • 20+ years of hands-on Oracle expertise — I have seen it all • Proven track record of successful implementations, including work with US State Departments • Full-service team covering development, administration, and cloud • Results-driven, scalable, and secure solutions Whether you need a high-performing database, a custom-built application, or a seamless cloud migration, I am here to make it happen. Let’s book a call now!