With a rich 25-year trajectory in Data Engineering, Project Management, and Business Analysis, I thrive on designing and orchestrating end-to-end data processes that propel informed decision-making and strategic innovation. My expertise spans across architecting robust databases, fine-tuning ETL pipelines, and unveiling actionable insights through advanced analytics and data science. The realm of data isn’t just a profession; it’s a landscape where my curiosity and technical acumen come alive. Every dataset tells a story, every project illuminates a path to organizational excellence. Whether in the financial sector or diverse industries, my approach remains the same: to dive into the data deluge, extract value, and drive forward the narrative of data-driven success. My professional journey has afforded me the privilege of contributing to major customers and projects, including but not limited to engagements with MAN SE, IBM, Atos, Allianz, and VISA Switzerland, among others. Each endeavor has not only been a chapter of learning and innovation but a testament to the transformative power of data when harnessed effectively. I welcome the opportunity to discuss how my background, skills, and experience can be aligned with your challenges. Feel free to get in touch to explore collaborative possibilities.

I’m a Senior .NET Developer combined with a Business Analyst mindset, with 10+ years of experience delivering and rescuing business-critical systems. I don’t just develop features — I analyze business workflows, fix system bottlenecks, and deliver scalable solutions that actually improve operations. In addition, I bring strong UI/UX implementation skills, allowing me to turn designs into pixel-perfect, production-ready interfaces — ensuring both performance and user experience. 🏆 Top Rated Freelancer 🏆 100% Job Success Score 💰 $10,000+ Earned 🚀 What I Specialize In 🔹 ERP / CRM / Business Systems Development Design and build systems for Sales, HRM, Warehouse, Manufacturing, Fleet Management Translate business requirements into scalable technical solutions 🔹 Legacy System Modernization (.NET) Upgrade old systems (.NET MVC, WebForms) → .NET Core / Blazor Refactor messy codebases into maintainable architectures Improve system performance, stability, and scalability 🔹 System Performance Optimization Fix slow systems (database queries, API latency, UI rendering) Optimize SQL, backend logic, and frontend performance 🔹 Pixel-Perfect UI Development (Figma / Adobe → Code) Convert Figma / Adobe XD / Photoshop designs into responsive HTML/CSS Ensure pixel-perfect accuracy across devices and browsers Implement UI using Blazor, DevExpress, Telerik 🔹 Business Analysis + Technical Execution Analyze workflows and suggest better system design Reduce operational inefficiencies through smart automation 💡 Why Clients Hire Me I think like a business owner, not just a developer I can quickly understand complex legacy systems and take ownership I proactively identify risks, bottlenecks, and better approaches I communicate clearly and provide regular progress updates 🧠 Tech Stack Backend: C#, .NET Core, ASP.NET MVC, Web API, Entity Framework Frontend: Blazor, HTML, CSS, JavaScript, Bootstrap, jQuery UI Frameworks: DevExpress, Telerik (Kendo UI), Syncfusion Database & Data: SQL Server, PL/SQL, OLAP, MDX Other: Python, ETL, Power BI, Excel, .NET MAUI 🎯 Productized Services (Fixed Scope – High Value) 💼 ERP / CRM System Audit – from $200 - Review architecture, database, and workflows - Identify bottlenecks & risks - Provide actionable improvement plan ⚡ Fix Slow .NET System – from $300 - Analyze performance issues (SQL / API / UI) - Optimize response time and system stability - Deliver measurable improvements 🔧 Legacy System Upgrade (.NET MVC → .NET Core / Blazor) - Codebase assessment - Migration strategy - Step-by-step modernization plan 📊 Database & Query Optimization – from $150 - Analyze slow queries - Optimize indexes and execution plans - Improve overall system performance 📌 Best Fit Clients - Companies running old .NET systems with performance issues - Businesses needing ERP / HRM systems built or improved - Founders who want a developer that understands business, not just code 💬 Let’s Work Together If your system is slow, hard to maintain, or no longer fits your business — I can help you analyze, fix, and upgrade it efficiently.

It was the most important moment of my 13+ years of career. It was when I realized that there is always a trade-off in technology. You have to do something intentionally bad in order to succeed as a Small Medium Business in the Digital Transformation. And 70% fail because they insist on doing this very thing well. A while back, when I finally landed a job in a corporation, I was excited that I was going to use state-of-art technology. But, one of my first features immediately added some bugs. As I fixed those bugs, I introduced another, but also other bugs started to pop up caused by previous developers. In laymen terms, it is like a Rubik’s cube. As you carry on assembling the second face, you may accidentally mess up the first bit. It wasn’t like that when I started my career in technology in the civil service a long time ago. Yes, I was frustrated because we used old boring technology. But, we didn’t have to put out the fire all the time because that limited technology prevented us from getting in this position. Coincidence or not, the easiest way to solve the Rubik’s cube is putting constraints. If you move towards, you have to move backwards at some point. Fast forward to nowadays, some of my clients want to create highly customized User Experience. As the project starts to grow, hyper customization introduces more complexity. Then, you make a small change and get unexpected results. You didn't account for all the complex consequences. And this happens again and again, and you can’t avoid it. The software had become brittle. You start to miss deadlines or have to hire more developers to fix cracks faster, and eventually I get hired. That’s the time I have the hard talk: don’t bite more than you can chew, stop chasing the perfect User Experience (good User Interface is not a problem though) with a small team. If a BigTech didn’t have to hire thousands of engineers to provide that, they certainly wouldn’t. Anyway, User Experience is only noticed by B2C clients, and this is where Big Techs thrive. In B2B or internal tool software, who pays for the software won’t even use it. Hey, my name is João, I’m a software architect and developer, feel free to send me a message asking how I can make your business grow. What technologies do I work with? The simple ones: HTML, CSS, Bootstrap, Bash, XML, PostgreSQL, Apache Camel, Apache Knowledge Is Everything, Keycloak. If you need a hypercustomized solution, I can decently program in Java, Python and JavaScript, though. If you have any doubts, don’t hesitate to contact me.

As an Oracle APEX developer with several years of experience, I specialize SQL, PL/SQL, and optimization. My skills extend to working with Oracle and MySQL databases and integrating APIs with Oracle APEX. In addition, I am familiar with other programming languages like Java, C/C++, PHP, JavaScript, HTML, CSS, jQuery, and AJAX. I have experience working with Amazon AWS, including EC2 Cloud, RDS, S3, Cognito, Route53, and Lambda. I am also knowledgeable in database design and monitoring, and routinely perform maintenance tasks to ensure optimal performance. I have also integrated various APIs with Oracle and Oracle Apex, such as Twilio, Zoom, GoToMeeting, Instamed, and Heartland. I have created custom plugins for oracle apex to implement new features and monitored databases from day-to-day. I have collaborated with teams of developers and temporary resources to deliver quality software products that meet client requirements and deadlines. Additionally, I worked on Oracle Forms to Oracle APEX conversion project, where I worked on creating Oracle Apex aplication and replicating the pages and forms and triggers and actions by analyzing the xml exports from Oracle Forms applications and manually replicating them (or creating Identical/as similar as possible - pages, reports, forms and grids) in Oracle APEX Currently, I am working on an international admissions solution for institutions in the US to manage the admission of international students, as well as an electronic health records project that provides a comprehensive solution for various healthcare requirements. Through these experiences, I have developed strong communication and teamwork skills that allow me to work effectively with individuals from diverse backgrounds and skill sets.

𝐂𝐞𝐫𝐭𝐢𝐟𝐢𝐞𝐝 𝐏𝐨𝐰𝐞𝐫 𝐁𝐈 𝐒𝐩𝐞𝐜𝐢𝐚𝐥𝐢𝐬𝐭 🏆 I help businesses turn messy, scattered data into clear, reliable dashboards and data systems that teams actually use to make decisions. I’m a Microsoft Certified Power BI Data Analyst (PL-300) with 12+ years of experience in data engineering and business intelligence. I don’t just build dashboards, I design complete data solutions, from raw data pipelines to executive-ready Power BI reports that drive real business outcomes. If you’re struggling with slow reports, unreliable data, or dashboards no one trusts, I can help you fix that with a clean, scalable, and well-structured data setup. 🚀 How I Can Help You I work across the full analytics stack, which means you don’t need to hire multiple people. I handle everything from data ingestion to final dashboards. Here’s what I typically deliver: • Power BI dashboards that are fast, interactive, and easy to understand • Clean and scalable data models using star schema and best practices • End-to-end data pipelines using Microsoft Fabric and Azure Data Factory • Reliable ETL/ELT processes (batch, incremental, API integrations) • Modern data warehouses (Fabric, Snowflake, Azure SQL) • Row-Level Security (RLS) and governed KPI definitions • Automated reporting workflows using Power Automate, n8n, and AI integrations 🧠 My Approach (Why Clients Work With Me) Most developers start with charts. I start with your business problem. I focus on: ✔ Understanding what decisions your dashboard needs to support ✔ Designing data models that scale as your business grows ✔ Building dashboards your team will actually use (not ignore) ✔ Ensuring your data is accurate, consistent, and trustworthy I also communicate clearly throughout the project, so you always know what’s being built and why. 🛠️ My Core Expertise I’ve worked extensively with: • Power BI (DAX, Power Query, dashboards, embedded analytics) • Microsoft Fabric (Lakehouse, Warehouse, Dataflows Gen2) • Azure Data Factory (pipeline orchestration, automation) • SQL, Python, PySpark for data transformation • Snowflake, Azure SQL, SQL Server • Data modeling (star schema, semantic layers, KPI frameworks) • Workflow automation (Power Automate, n8n, GPT integrations) 💬 What Clients Say ⭐ “Exceptional delivery and attention to detail. He made complex requirements simple and usable.” ⭐ “Strong communication and deep expertise. Delivered exactly what we needed.” ⭐ “Reliable, skilled, and easy to work with. We’ll continue working with him.” 🎯 When You Should Hire Me You should reach out if: • Your Power BI dashboards are slow or confusing • Your data comes from multiple sources and isn’t consistent • You need a proper data pipeline instead of manual Excel work • You want a scalable analytics setup, not a temporary fix • You need someone who understands both business and data 🤝 Let’s Work Together If you’re looking for someone who can own your entire data stack and deliver dashboards your team actually trusts, I’d be happy to help. Power BI | Data Analytics | Business Intelligence | BI Developer | Dashboard Design | Data Visualization | ETL | Data Engineering | Data Warehousing | SQL | Python | AWS | Azure | Snowflake | BigQuery | Redshift | DBT | PySpark | Talend | Alteryx | Machine Learning | AI Reporting | Predictive Analytics | GPT | LangChain | Pinecone | Workflow Automation | Reporting Automation | Data Pipelines | KPI Dashboards | Executive Dashboards | Financial Dashboards | Sales Analytics | Marketing Analytics | Operational Dashboards | GIS Analytics | Excel Dashboards | Cloud Data Solutions | API Integration | Embedded Dashboards | Business Intelligence Consulting | Data Strategy | Data Insights | Real-Time Analytics

I help enterprise and operations-heavy teams turn messy business processes into reliable systems. I’ve spent 15+ years building and leading production software systems: .NET platforms, Azure infrastructure, SQL databases, APIs, internal tools, reporting workflows, and business-critical applications. That background lets me bridge the gap between AI experimentation and software that a real business can actually depend on. I work best where software needs to connect with real operations - documents, databases, CRMs, spreadsheets, internal portals, legacy systems, approval workflows, reporting processes, and human review steps. I use Claude Code and OpenAI Codex as part of my daily engineering workflow: reviewing codebases, planning features, accelerating development, testing ideas, refactoring safely, and turning business requirements into working software faster. My value is knowing how to apply AI inside real production environments where architecture, security, data quality, maintainability, and auditability matter. I can help with: 🔧 Process Engineering - mapping workflows, finding automation opportunities, and designing safer AI-assisted processes 🤖 AI Automation - document processing, internal tools, reporting automation, CRM/data-entry support, and review queues 🧠 AI/LLM Development - assistants, RAG/search, structured outputs, guardrails, evaluations, and human-in-the-loop workflows 🏗️ .NET / Azure / SQL Integration - connecting AI into existing enterprise systems without creating fragile side projects 📐 Fractional CTO / Technical Lead Support - architecture, roadmap planning, risk review, estimates, and execution strategy A typical first step is a short discovery and workflow review. From there, I give you a prioritized plan: what can be automated, what should stay human-reviewed, where the risks are, what it will cost, and what can be shipped first. Message me with your current process, stack, pain point, and deadline. I’ll help you turn the time-sink into a working system.

I’m a Senior Java Backend Engineer with over 14 years of experience building mission-critical systems in fintech, with a strong focus on payments, lending platforms, and core banking solutions. I specialize in Java and Spring Boot, and design backend systems that are secure, scalable, and capable of handling high-volume financial transactions with consistency and reliability. I’ve worked on systems involving payment processing, transaction workflows, loan management, and integrations with external financial services and APIs. This includes designing and building robust microservices architectures that support real-time and asynchronous processing, ensuring data accuracy, fault tolerance, and seamless service communication. I understand the importance of idempotency, transaction integrity, and failure handling in financial systems where even minor inconsistencies can have significant impact. Security and compliance are central to my approach. I have strong experience implementing secure authentication and authorization using Spring Security, token-based systems, and role-based access control. I build APIs and backend services that align with financial industry expectations around data protection, auditability, and reliability. From a technical standpoint, I bring deep expertise in Spring Boot, microservices, REST API design, JPA/Hibernate, and relational databases like MySQL and PostgreSQL. I’m comfortable designing systems from scratch as well as improving and scaling existing platforms, optimizing performance, and ensuring stability under load. I also have hands-on experience with AWS and Google Cloud, and have worked on deploying and managing backend systems in cloud environments. I understand how to design cloud-ready architectures, implement CI/CD pipelines, and ensure systems are resilient, observable, and production-ready. What sets me apart is my ability to think beyond just implementation. In fintech systems, correctness, reliability, and long-term maintainability matter more than quick fixes. I focus on building clean, well-structured systems that not only meet current requirements but are also prepared for future scale, regulatory needs, and product evolution. If you’re building or scaling a payments platform, lending system, or core banking backend and need someone who understands both the technical and domain challenges, I’d be glad to contribute.

With over a decade of hands-on experience spanning Oracle Database, Oracle Forms & Reports, Oracle Apex, SQL, PL-SQL, and Web Development, I'm an Oracle Certified Professional (OCP) and I've strong professional experience & expertise of database projects. Experience Snapshot: Oracle Database: Mastery in Oracle Database administration, including managing, troubleshooting, updating, and enhancing performance to ensure seamless operations. Oracle Forms & Reports: Extensive background in Oracle Forms & Reports development, adept at crafting robust applications tailored to specific project needs. Oracle Apex: Proficient in leveraging Oracle Apex to develop dynamic and user-friendly web applications, enhancing user experience and functionality. SQL & PL-SQL: Advanced skills in SQL and PL-SQL programming, enabling efficient data manipulation, retrieval, and management. Key Responsibilities: Applications Management: Proficiently oversee applications, spearheading Oracle forms & reports development to meet project objectives and deadlines. Database Management: Ensure the smooth functioning of Oracle Databases through proactive management, troubleshooting, and performance optimization. Backup & Recovery: Implement robust backup strategies including RMAN and .dat schema backups to safeguard critical data and ensure disaster recovery preparedness. Applications Module Implementation: Drive the successful implementation of application modules, aligning them with business goals and user requirements. System Analysis: Conduct in-depth system analysis and gather user requirements to ensure clear project objectives and stakeholder alignment. Server Management: Efficiently manage both application and Linux servers, ensuring their reliability and optimal performance to support business operations seamlessly. With a proven track record of delivering exceptional results and a commitment to excellence, I am dedicated to contributing to the success of your projects. Let's collaborate to achieve your objectives efficiently and effectively. Area of Specialization ============== ✔ HTML | CSS | Bootstrap | Tailwind CSS ✔ JavaScript | jQuery | React JS | Next JS ✔ PHP | Laravel | API Integration ✔ Oracle PL/SQL Programming ✔ Oracle SQL Programming ✔ Oracle Forms(All Versions) ✔ Oracle Reports(All Versions) ✔ Database Designing and Development ✔ Query Handling ✔ Database Functions ✔ Database Procedures ✔ Database Packages ✔ Database Views ✔ SQL,PL/SQL complex queries ✔ Graphical User Interface (GUI) ✔ Data Guard Configuration ✔ RMAN Active Duplication ✔ Database Performance Tuning ✔ RMAN backup and recovery ✔ Oracle Forms and Reports Developer (6i, 10g,12c) ✔ Oracle Web Logic Server 12c ✔ Oracle Fusion Middle-ware 12c ✔ Windows, Linux, AIX Operating System ✔ Real application cluster(RAC) ✔ Database migration and upgrading ✔ Linux shell script ✔ Oracle automatic storage(ASM) ✔ SQL Server ✔ Apache tomcat ✔ Http server, haproxy, Lvm linux ✔ Microsoft Power BI ✔ Oracle Enterprise Manager 13C ✔ Firebase Database

I am Niladri, an accomplished RPA (Robotic Process Automation) specialist with over 16 years of extensive experience in automating processes using leading RPA platforms such as UiPath, Blue Prism, and Automation Anywhere and as well as Power Apps including Power BI. Throughout my career, I have consistently delivered exceptional results, demonstrating my commitment to providing high-quality service and adhering to project timelines. My Expertise at a Glance: RPA Mastery: I possess a profound understanding of RPA technologies and methodologies, with a successful track record of delivering over 100 automation processes for diverse clients. My expertise extends to UiPath, Blue Prism, and Automation Anywhere, power automate allowing me to select the most suitable platform for each project. Project Management: I have managed large-scale automation projects comprising 23+ processes, leading a team of 12 skilled professionals. My ability to coordinate teams and ensure seamless project execution is a testament to my project management skills. RPA Architecture: I have held pivotal roles as a Lead and Architect, where I've conceptualized, designed, and implemented RPA architectural solutions for clients. My experience includes assessing automation opportunities from a technical perspective and providing tailored solutions. SQL Server Expertise: Proficiency in Microsoft SQL Server is one of my key skills. I excel in database management, querying, and optimization, ensuring that data-related aspects of automation are handled efficiently. Python and VBA: I am skilled in Python and VBA, which are powerful tools for custom scripting and automation. These skills enable me to create solutions that go beyond the capabilities of standard RPA platforms. ChatGPT: I have experience using ChatGPT, a cutting-edge AI technology, to enhance automation processes by incorporating natural language understanding and generation capabilities. Certifications: Microsoft Certified DBA Querying Microsoft SQL Server Certified Microsoft Azure Fundamental Certified Microsoft Certified Cloud Data Science with Azure Machine Learning UiPath RPA Developer Foundation Diploma UiPath RPA Developer SAP Automation Training UiPath Orchestrator 2016.2 Training UiPath RPA Advanced Developer Certified Automation Anywhere Advanced RPA Certified Automation Anywhere Master RPA Certified Power Platform Certified (PL500 and PL900) Continuous Improvement: I am dedicated to staying at the forefront of technology and automation trends, ensuring that my skills and knowledge are always up to date. My certifications and commitment to professional development reflect this commitment. I am enthusiastic about the prospect of collaborating with you and establishing a long-lasting professional relationship. My unwavering dedication to delivering results, coupled with my extensive experience and additional skills, positions me as a valuable asset for any RPA initiative. If you would like to discuss potential collaboration or have any inquiries, please feel free to reach out. I am eager to explore how I can contribute to your projects and help your organization achieve its automation goals. Thank you for considering my profile, and I look forward to the opportunity of working with you. Best Regards, Niladri

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!