Hire the Best Oracle SOA Suite Developers
in the United States

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!

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.

💼 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!

Full Stack Data Engineer and Principal Technical Consultant with decades of experience in Oracle Database Architecture and Administration, Javascript Full Stack Development, Cloud Data Integration Pipelines, and DevOps Core Competencies: Cloud / Database: Azure Data Factory, Azure Databricks, Delta Lake, Unity Catalog, Oracle OCI, Oracle RAC, MongoDB, SQL Server Infrastructure / DevOps: Terraform IaC, Ansible, GitHub Actions CI/CD, Linux, NGINX, VM, Containers Languages / Frameworks: Python, Node.js, Vue/Nuxt, C#, PL/SQL, T-SQL, JavaScript (ES6+) Integration: REST / SOAP APIs, RCP, Twilio, SendGrid, Workday Adaptive Insights, NetSuite, Plex, Dynamics365, QBO, Salesforce, etc. Security: OAuth2, JWT, Databricks RBAC, TLS/SSL Methodologies: PM > Agile, Waterfall, SOW Management, Technical Design Review, Knowledge Transfer Planning Compliance & Security: SOC 2, HIPAA, STIG, SOX Experience: Adam Helm Consulting, Inc: Owner and Principal Technical Consultant (2020-Present) Prism PPM: Senior Data Engineer (1/25 - Current) Partner with third-party vendor to design and implement a new business intelligence platform for the company’s SaaS-based Project Portfolio Management application, modernizing reporting and analytics capabilities. Developed and implemented the Change Data Capture (CDC) in Oracle for reliable downstream replication. Consulted on the design and implementation of Azure Data Factory pipelines to extract and transform Oracle source data into partitioned Parquet datasets in Azure Data Lake Storage Gen2 for downstream Databricks ingestion. Oversaw the implementation of a Databricks Medallion architecture using PySpark and Delta Live Tables to process Oracle-sourced Parquet data — deduplicating Bronze-layer ingests, reconciling CDC changes in Silver, and modeling Gold-layer fact and dimension tables powering embedded Power BI analytics. Introduced row-level security (RLS) and Unity Catalog for governed analytics access. Implemented Databricks Delta sharing capabilities for real time Databricks to Databricks integrations. Assisted with the design and automation of a Terraform-based Infrastructure-as-Code (IaC) framework to deploy Azure Data Factory, Key Vault, Storage Account, SQL Database, Log Analytics Workspace, and Managed Identities across dev, test, and production environments. Integrated environment configuration via YAML templates and automated validation through Go-based Terratest to ensure consistent, repeatable deployments. Ensured full alignment to the Statement of Work, validating deliverables and maintaining accountability. Assisted with the creation of the Technical Design Document (TDD) to eliminate ambiguity and ensure maintainability. Structured and led Knowledge Transfer (KT) sessions to equip stakeholders for post-implementation support. Participated in a cross-functional strategy and innovation summit in Cluj-Napoca, Romania, collaborating with engineering, product, and analytics teams to align on AI enablement, process maturity, and delivery KPIs — resulting in improved clarity around product strategy and execution. Casne Engineering: Principal Oracle DBA (2006 – Current) For BP, Perform Oracle upgrades and lead system migrations Assist with Oracle performance optimization through schema design and indexing strategies. Develop Ansible patch automation process / develop application stored procedures and triggers Create HA and DR / backup and recovery strategy. Dropkick Media: Full Stack Engineer (2022 – 2025) Developed a full-stack Nuxt.js application with a Node.js/Express backend and MongoDB database, designed for large-scale web data indexing and search. Integrated Puppeteer and Cheerio to automate browser sessions and extract structured data from publicly available web pages. Implemented secure authentication using JWTs, bcrypt, and Nuxt middleware for session handling and protected routes. Built a dynamic search and filtering interface using Vuetify, Vuex, and Axios to deliver fast, user-friendly data exploration. Configured a scalable server architecture with environment-based builds, REST APIs, and integrated health monitoring endpoints. CSC - Bath Iron Works Client: Senior Oracle DBA Decouple and redevelop Sybase back-end system in Oracle. Saved the company $30K in recurring licensing fees for a one-off Sybase system. Lead DBA in charge of scoping and deploying Oracle RAC databases infrastructure including CRS and ASM to optimize horizontal scaling. Led the geographic relocation of production database system for Enovia when Bath Iron Works became prime contractor for the DDG1000 program. Stanford University: Self Study, Computer Science: Completed hundreds of hours of self-study in computer science, focusing on algorithms, programming methodologies, and software design principles using CS106A and CS106B course materials.

⭐ 𝗘𝘅𝗽𝗲𝗿𝘁 𝗩𝗲𝘁𝘁𝗲𝗱 & 𝗧𝗼𝗽 𝗥𝗮𝘁𝗲𝗱 𝗣𝗹𝘂𝘀 (𝘁𝗼𝗽 𝟭% 𝗼𝗳 𝘁𝗮𝗹𝗲𝗻𝘁 𝗼𝗻 𝗨𝗽𝘄𝗼𝗿𝗸) ⭐ ⭐ 5-Star Reviews ⭐| 🤑 $700k+ Earned on Upwork 🤑 | 🏆 100% Job Success Score 🏆 🏆Specializing in SAP Business One, Acumatica , SAP ByD, S/4HANA and SAP ECC Consulting and Development. ✅ U.S. based consultant ☎️ Free 30-Minute Consultation ($90 Value) 📅 Invite me to your job and I'll send you my calendar link SAP Business One | Acumatica | SAP ByDesign | SAP ECC | S/4HANA Application Expert with more than 16 years of experience in design, configuration, writing functional specifications. Advanced knowledge of implementations, development and system configuration through the entire life cycle, from project preparation to Go live and Support. - Software Integration (EDI, eCommerce, POS, WMS, iOS, Microsoft Dynamics CRM, MS Office, Sharepoint, Magento, Shopify, BigCommerce, Salesforce, SellerCloud, UPS, FedEx, TaskCentre, Hubspot, 3PL, NuOrder, Square Payment). - Custom addons (SAP B1 SDK, DI API, UI, Server DI, B1i integration framework(B1if), C#, VB.NET, REST API) - Database management(SQL Server, HANA, SQL Queries, SP's, UDF's, Triggers, Backups, scheduling tasks, DB recovery, Mirroring, Log shipping, REPLICATION and SSIS). - Data Migration from legacy systems to SAP Business One , using Data Transfer Workbench(DTW), Copy Express and other tools. - Customization of print layouts using the Print Layout Designer(PLD) and Crystal Reports. - Dashboarding and Report Tools like Crystal Reports, Pervasive Analytics, SSRS, Tableau, Power BI, Xcelsius, DOMO, QlikView, Boyum Dashboards, SAP Fiori. - Boyum B1 Usability Package (B1UP) , Coresuite and Wisys good knowledge - SAP ByDesign(ByD) - SAP Cloud Applications Studio, Adobe LiveCycle Designer, ODATA, Webservices. - SAP ECC functional, implementation and development consulting(Workflow, ABAP, BADI) - Worked with different SAP Partners - Softengine, Vision33, Sapphire, Navigator, Pioneer B1, BatchMaster, Consensus... Extremely detailed, quickly responsive and US-based. Please visit our website and learn more about DNG Systems Inc: DNGSYSTEMS com If you think we're a good fit to work together, click the green "Invite to Job" button at the top right corner of this page, and tell me a bit about your business. Respectfully, Eugene Gova

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