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Top freelance Oracle PL/SQL developers available to hire
Software Developer with over 6 years of experience specializing in back-end engineering. Proven ability to design and build resilient, scalable micro-services using Java, Spring Framework, and cloud-native technologies. Consistently delivers high-performance software that enhances user experience and drives operational efficiency. Open to new challenges in Software Engineering roles.
Hello
I have been working in the market for the past 10 years.
in the field of Database, SQL, Oracle, SQL Server, MySQL, NOSQL,DWH,ETL ,reporting and BI tools.
Have knowledge of multiples domain areas
such as Finance & banking ,Telecom, health care, Tax & Legal and FMCG
My recent freelance work has involved Development and programming (Web Development, Oracle Form Builder, Oracle Report Builder, PLSQL, Enterprise Services, Open Sources). I worked on various website using a MySQL and Oracle database,
I love to work with both, they are good for different purposes. I've built several APIs so other website/application may interact with it. I know about responsive design, I like when the website I design can be easily scaled down to iPad or iPhone size since more and more user uses mobile devices nowadays! • Wordpress, Magento, Joomla • Codeignitor, YII, Zend • - ActionScript, Javascript, PHP, AJAX, jQuery • Bootstrap, jQuery, Prototype
I understand how working with freelancers can be frustrating mainly because they can be unreachable and you just don't know if they are a good fit.
just completed the badge of Generative AI for Healthcare from Google :) https://www.cloudskillsboost.google/course_templates/1081/badge
I'm available 24/7 by phone/skype/email, you won't have any problems getting in touch with me.
Software Engineer with 10 years of experience in Online Mentoring.
My Database and SQL expertise include Conceptual and Logical designs (ERD &EER), Normalization, Relational Schemas, Complex queries, CTE, Stored Procedures, Functions, Cursors, Indexing, Optimization)
I also mentor in Python Programming (3x) , Java (Version 8), MS Access (2020 and lower versions), Tableau (Visualizations) and C/C++.
*** Full refund if the issue was not resolved ***
Antonio is a programmer with over two decades of experience in the FinTech and Telecom industries. He aspires to be a master of C#, SQL, React, NextJS Typescript. He values curiosity, resourcefulness, and honesty. His hobbies include hiking, photography, meat, driving, and exploring medieval structures
I'm a senior fullstack JS developer. I am a team player and I love to learn new things and share my experience.
I have been working as a developer since 2009, mostly as a front-end.
Some of the things that I've made:
* Static webpages (freelance).
* Working as a support and developer engineer working closely with Customer Support team.
* Developing a new CRM to replace Salesforce in MercadoLibre (biggest e-commerce latam company)
* Developing a new UI Library in Wenance to share components between company apps.
I have +10 years of experience in HTML/CSS, Js, React and nodeJS
I've been working in this field since 1998, programming in a variety of languages, including Java and C#. I have taught professional courses designed to meet the needs of reputable organizations.
Everything in this universe, in my opinion, is programmed; even atoms are programmed to join together to form molecules. I always do my best to solve problems programmatically.
I am an internationally experienced CTO, Systems Architect, Leader and Full Stack Software Engineer with 40 years experience in hands-on coding and building systems, teams and processes that scale.
For the past 7 years I have been running my own Fractional CTO agency, and focus on helping startups build and scale 1st class development teams and processes.
Recent projects/companies:
2025 Interim CTO at www.orynth.dev an AI website builder, Athens
2025 Interim CTO at [www.legalutopia.co.uk](http://www.legalutopia.co.uk/) (bankrupt Oct 25), London
2024-25 CTO at Cherny Enterprises Ltd - stealth Ai startup, Miami/London
2023-24 Frontend Lead at [www.dicer.ai](http://www.dicer.ai/), AI/MarTech startup, NYC
2022-23 Interim CTO at [www.scrolller.com](http://www.scrolller.com/), a social media startup with 10 million MAUs, NYC
2019-22 Staff Developer at [www.triplepointliquidity.com](http://www.triplepointliquidity.com/) a blockchain startup in Private Equity - NYC,
2018-19 Interim CTO at a blockchain startup (a pro-bono role), Zurich
2019 Staff Developer at [www.winnr.gg](http://www.winnr.gg/), eCom startup, Paris
[http://www.richardmcsharry.com](http://www.richardmcsharry.com/)
I define the architecture. For 21 years, I've been the person CTOs and lead developers call when systems fail under load, migrations are at risk or AI integration needs to work right the first time.
With expertise in .NET, Python, Blazor, ASP.NET Core, SQL and agentic AI architecture (LLMs, reasoning engines, Semantic Kernel, LangGraph, tool-calling agents), I design systems where performance, reliability, and intelligent automation aren't optional—they're the baseline.
I deliver AI in production, not prototypes. I’ve architected and deployed AI-powered systems across financial platforms, education and exam automation, and real estate market intelligence, including enterprise-grade solutions for organizations such as The New York Times, Project Management Institute (PMI), Walmart, Merit Wealth, Namfus and BlueberryCMS.
---
**Here's where I'm most useful to you:**
- **The AI Integration Trap** — You've been asked to add AI to your existing .NET system but don't know whether to use *Semantic Kernel*, raw OpenAI APIs, or a Python sidecar. I've made that decision dozens of times. I'll make it faster and safer for you.
- **The Blazor Bottleneck** — Your Blazor app is slow, state management is tangled, and you're unsure if you chose *Server or WASM* incorrectly. I can diagnose what went wrong and map a clean path forward — often in a single session.
- **The Legacy Modernization Cliff** — You have a 10-year-old .NET system that needs AI or modern tooling but wasn't designed for it. I specialize in *incremental refactoring paths* that don't require a full rewrite and don't break what's already working.
---
**What I Do Best:**
- **Software Architecture & System Design** — scalable, maintainable systems from greenfield to enterprise
- **AI Agent Development** — production-grade agents with Semantic Kernel, LangGraph & AutoGen — *not demos*
- **Blazor & ASP.NET Core** — Server, WASM, hybrid — full-cycle development and performance tuning
- **Python & AI Automation** — RAG pipelines, workflow automation, voice AI, LLM integrations, chatbots
- **Legacy .NET Modernization** — refactoring strategy, migration paths, incremental upgrades
- **Architecture Audits** — identifying structural risk before it becomes a production incident, not after
- **Debugging Complex Systems** — when the stack trace doesn't tell the whole story
**If any of this sounds like your current situation — DM me. I respond to every message.**
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Frequently asked questions
How long do Oracle PL/SQL projects normally take?
The length of a project depends on many factors, including the scope of your project and the technical complexity of it. When you post a freelance Oracle PL/SQL project request on Codementor, you’ll have the option to indicate when you’d expect the project to be completed. We suggest chatting with the interested developers to ensure both sides are on the same page. For more information on how to post a freelance Oracle PL/SQL request on Codementor, check out our article.
How much does it cost to hire a freelance Oracle PL/SQL developer?
We don’t charge anything when you post a freelance hiring request for Oracle PL/SQL developers! You’ll have the chance to determine what the budget for your project is when you post the request. You’ll only need to pay the developer if you’re 100% satisfied with their work. Please know that Codementor charges a small service fee when a developer completes the job.
What makes Codementor Oracle PL/SQL developers different?
We do a comprehensive technical and communications screen of all Oracle PL/SQL developers at Codementor. Our network includes book authors, popular open source contributors, top Stack Overflow users and engineers at top tech companies. In addition, to continually ensure the quality of our freelancers, we regularly check in on existing Oracle PL/SQL developers’ user satisfaction rates.
What happens if I’m not happy with the freelancer’s work?
As a platform, we strive to ensure you’re always happy with your Oracle PL/SQL project’s results. If you’re unsatisfied with the results, you can choose to get a refund for the project. Additionally, you can contact our support team should you need any further assistance with your project.
For more answers to frequently asked questions, see here.
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