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Oracle Certified Database Developer with over 6 years of professional experience and 3 years of data analysis expertise, I am dedicated to providing top-notch solutions to meet your database and data analysis needs. Specializing in Database Design, SQL Query Development, PL/SQL programming, and SQL Query Optimization. My commitment to quality, attention to detail, and efficient project management ensures the timely and successful completion of every task. Services I provide: ➤ Database Design and Development: I offer comprehensive database design and development services. Conceptual Design, Logical Design, ERD, EER, and Physical Design of Schema. I specialize in creating efficient and scalable database architectures tailored to your specific needs. I offer my service for Oracle, MS SQL Server, PostgreSQL, MySQL, and Azure databases. ➤ SQL Query: With my expertise in SQL, I can help you extract, manipulate, and analyze data from your database. From simple SELECT statements to advanced JOINs and subqueries, I am proficient in crafting efficient and accurate SQL queries. I pay attention to optimizing query performance and ensuring accurate results, empowering you to gain valuable insights from your data. ➤ PL/SQL Programming: Whether you require stored procedures, triggers, functions, or packages, I can develop custom PL/SQL code to automate tasks, enforce business rules, and improve overall database performance. I follow best practices in coding, ensuring readability, maintainability, and adherence to industry standards. ➤ Oracle Application Development: Technical Support of Oracle EBS Financial and SCM modules, configurations, and integrations. I can assist in identifying and resolving technical issues, whether they involve application errors or system integration challenges. I employ troubleshooting techniques to diagnose and resolve issues promptly, minimizing downtime and maximizing system efficiency. I will develop XML Publisher Report, OTBI Analysis, Dashboard, and Custom Application Development with Oracle Forms, Reports, & APEX. ➤ Data Analysis: Unleash the power of your data with my data analysis services. With expertise in tools like Excel and Python, I can help you uncover valuable insights and make data-driven decisions. From cleaning and transforming data to performing statistical analysis and creating visualizations, I have the skills to extract meaningful information from complex datasets. I work closely with you to understand your analytical goals and provide actionable results to drive business success. Why choose me? ✅ Expertise: I possess a deep understanding of Relational database architecture, SQL, PL/SQL, stored procedures, triggers, functions, Database design and optimization concepts, Oracle Forms, Reports & APEX. ✅ Reliability: I am dedicated to meeting deadlines and exceeding client expectations. ✅ Communication: I maintain clear and prompt communication to ensure transparency throughout the project. ✅ Collaborative Approach: I believe in fostering a strong client-freelancer partnership to deliver the best possible outcomes. ✅ Client Satisfaction: My ultimate goal is your satisfaction, and I strive to build long-term relationships with my clients. Let's discuss how I can assist you in achieving your project goals. Please reach out to me via Upwork messenger, and let's get started on creating exceptional results together. Looking forward to collaborating with you!

I am a detail-oriented Data Researcher and Manual Data Validation Specialist with extensive experience in handling complex datasets with precision, confidentiality, and consistency. I specialize in transforming unstructured data into clean, reliable, and actionable data through a combination of deep research, systematic workflows, and rigorous manual validation. My core expertise includes: • Conducting in-depth web research to build well-structured and high-quality datasets • Collecting, organizing, and validating ESG, sustainability, financial, and company-level data • Extracting data from diverse sources such as websites, PDFs, reports, and images • Performing meticulous manual validation to ensure accuracy and eliminate inconsistencies • Managing and updating records while maintaining strict confidentiality of sensitive information • Applying a hybrid approach — leveraging basic automation tools where appropriate, while prioritizing manual checks for data integrity I am highly comfortable working independently on large-scale data collection projects that require diligence, speed, and attention to detail. My approach is methodical, ensuring every dataset is accurate, consistent, and ready for use. Key Achievements: • Completed 100+ data-centric projects for clients across the US, UK, and Australia • Successfully managed datasets exceeding 10,000 records with high accuracy • Built a strong reputation for delivering research-heavy projects on time with minimal errors What Sets Me Apart: • Exceptional attention to detail and accuracy in data handling • Strong organizational skills with a structured and systematic workflow • Ability to work independently while maintaining clear communication • Proven experience in handling sensitive data with confidentiality • Proficiency in Microsoft Excel, Google Sheets, and research-based data tools If you’re looking for a reliable, detail-oriented freelancer who can deliver clean, validated, and well-structured data — I’m ready to contribute to your project. Let's discuss how I can contribute to your success.

MS Access | VBA | SQL Server | MySQL | Business Automation Specialist | SharePoint Specialist I help businesses automate operations, reporting, and internal workflows using MS Access, Python, VBA, MySQL and SQL Server. With 15+ years of experience and 12,000+ Upwork hours, I design structured database systems that replace spreadsheets, eliminate manual errors, and improve reporting efficiency. What I Specialize In: ✔ Full database architecture (from concept, Excel mockup, or redesign) ✔ Relational database modeling & normalization ✔ Multi-user Access systems (LAN / SharePoint / SQL Server backend) ✔ Role-based login & user-level permissions ✔ Advanced VBA automation ✔ Performance optimization & database repair ✔ Excel / CSV import-export automation ✔ Analytical dashboards & dynamic reporting ✔ SQL query development & reporting logic My Approach: Many Access databases become unstable over time due to: Poor structure Unoptimized queries Weak VBA organization Lack of scalability planning I focus on long-term maintainability, performance, and clean architecture. If you need a professional MS Access system that works reliably for years — I can help. — Nasimul

I’m a Senior .NET/Azure Backend Engineer with 14+ years of experience building scalable SaaS platforms, ASP.NET Core APIs, SQL Server/PostgreSQL-backed systems, cloud-native backend services, and data-heavy applications. I help startups, SaaS companies, and enterprise teams design, build, modernize, and stabilize backend systems that need to be secure, reliable, maintainable, and ready to scale. I have worked on projects for organizations including Barclays and UNICEF, and I specialize in backend systems where clean architecture, database performance, API design, cloud reliability, and long-term maintainability matter. Core Expertise: ⚙️ Backend Engineering: .NET, ASP.NET Core, C#, REST APIs ☁️ Cloud Development: Azure Functions, Azure SQL, Azure Storage, ADF 🗄️ Database Engineering: SQL Server, PostgreSQL, Dapper, EF Core 🔌 API Integrations: OAuth2, JWT, Stripe, Twilio, CoreLogic, third-party APIs 📊 Data Platforms: ETL, CSV ingestion, data validation, large-scale processing 🏗️ Architecture: SaaS platforms, clean architecture, maintainable systems 🚀 Performance: query tuning, backend optimization, scalable workflows 🔐 Security: authentication, authorization, secrets handling, secure APIs 🧩 Modernization: legacy system refactoring and cloud migration 🛠️ Reliability: production debugging, monitoring, and long-term maintenance Highlights: 🚀 Improved backend/API performance and reduced latency in production systems 🏦 Delivered enterprise-grade software for fintech, SaaS, and global organizations 🔄 Integrated 20+ third-party APIs including payment, communication, AI, and data providers 📈 Built cloud-native solutions using Azure Functions, Azure SQL, and serverless workflows 📊 Designed and optimized SQL-heavy systems, reporting flows, and data ingestion pipelines 🛠️ Supported long-term production systems with debugging, maintenance, and performance tuning Problems I Can Help You Solve: ✅ Build a secure .NET / ASP.NET Core backend from scratch ✅ Modernize or refactor an existing legacy .NET application ✅ Design REST APIs for web, mobile, SaaS, or internal platforms ✅ Improve slow SQL queries, stored procedures, and database-heavy workflows ✅ Build Azure Functions, background jobs, and cloud automation ✅ Create data ingestion pipelines for CSV, API, database, or third-party sources ✅ Debug production issues and stabilize unreliable backend systems ✅ Integrate external APIs with proper error handling, retries, and logging Why Work With Me: ✅ 14+ years of hands-on backend engineering experience ✅ Strong focus on clean architecture, maintainability, and production quality ✅ Comfortable working with both startups and enterprise environments ✅ Clear communication, regular updates, and practical technical decisions ✅ Experienced in long-term projects, complex systems, and business-critical applications ✅ I don’t just write code — I help you make the right backend decisions Client Feedback: “Ashfaqbadon was very easy to communicate with, highly capable, and went above and beyond to deliver a complex project ahead of schedule.” If you need a reliable senior backend engineer for .NET, Azure, APIs, databases, or data-heavy systems, feel free to message me. I’d be happy to discuss your project and suggest the best technical approach.

I have 8 years of experience in Lead Generation, Data Scraping and Data Mining, specializing in Data Cleansing, Data Entry and Database Updating. I am fully capable of working with large and small databases and possess excellent knowledge of various scanning and Mining Software. I can also help take your idea or concept and turn it into a successful Database. I am always willing to learn and willfully familiarize myself with the product to provide the best possible support to clients. Services I provide: ✔ Experience working on a Data Mining task ✔ Excellent knowledge of Data Entry, Database Design, Database Cleanup and Updating ✔ Experience with Database Development ✔ Experience in finding leads from the web ✔ Strong understanding of object-oriented data entry ✔ Solid understanding of maintaining a large database ✔ Lead Generation ✔ B2b Lead Generation ✔ LinkedIn Lead Generation ✔ Real Estate Lead Generation ✔Data Mining ✔ LinkedIn Research ✔ Contact List Building ✔ Mailing List development ✔ Contacts List Cleanup ✔ Database Building ✔ Email List Generation ✔ Data Mining and Extraction ✔ Lead List Building ✔ Prospect List Building ✔ LinkedIn Prospecting ✔ Data Entry ✔ Data Extraction ✔ Data Collection ✔ Email Sourcing ✔ Valid and Verified Email Addresses, Social Media links Discovery (Such As Twitter, LinkedIn etc.) I can build a targeted Lead list and provide Valid Data from : - LinkedIn Lead Generation - Email & Phone Number Research - Potential client's research - LinkedIn Premium Search/Advanced Search - B2B Lead Generation - Data Entry (Microsoft Excel, Google Spreadsheet, File Sharing) - CRM (Salesforce, Rex Software) Additional Skills * Great English communication skills. * Ability to work in a team. * Ability to be online during work hours for real-time communication. * Available for 24/7 * Able to provide Team Support It's essential to me to establish long-term relationships with clients, so I'm primarily seeking long-term projects. I am flexible concerning working hours. Deadlines are sacred to me, and I will review your content as many times as it takes to ensure it exceeds your expectations. I am fully available for CHAT or ZOOM CALL. And available to work more than 60 hours a week. I look forward to hearing from you!

I have over 16 years of professional software development experience, including 5 years of hands-on experience with Oracle FLEXCUBE Core Banking (CBS). Throughout my career, I have designed, developed, enhanced, and maintained enterprise applications for banking and business domains using Microsoft technologies, Oracle databases, and cloud platforms. My core expertise includes: * Oracle FLEXCUBE (CBS) * C#, ASP.NET, ASP.NET Core, .NET Core, Web API * Oracle PL/SQL, Microsoft SQL Server (MSSQL), MySQL, PostgreSQL * Database Migration (MSSQL ↔ MySQL, Oracle ↔ MSSQL, data migration, schema conversion, ETL, and data validation) * Database Administration (DBA) activities, including database installation, backup & recovery, performance tuning, indexing, query optimization, user/security management, monitoring, and maintenance * Java, Entity Framework, Dapper * Angular, JavaScript, HTML, CSS, jQuery * AWS and Azure Cloud * SSRS, Crystal Reports * Git, TFS, Bitbucket, Jira, and Agile development What I can bring to your project: * Clean, scalable, and maintainable code * Strong database design, administration, and performance optimization * Database migration between MSSQL, MySQL, Oracle, and PostgreSQL with minimal downtime and data integrity * Experience integrating APIs and enterprise systems * Fast issue diagnosis and reliable bug fixing * Clear communication and on-time delivery * Ability to work independently or collaborate effectively with your team Having worked as a Senior Developer and Team Lead, I understand both the technical and business aspects of software development. Whether you need a new application, enhancements to an existing system, database migration, database administration, performance tuning, or long-term development support, I can deliver high-quality solutions that align with your business goals. I would be happy to discuss your project in more detail and recommend the most effective approach. I am available to start immediately and look forward to contributing to your project’s success. Thank you for taking the time to read my profile. I hope to speak with you soon! If you’re looking for high-quality work, fast turnaround, and reliable technical expertise at a fair price, please don’t hesitate to contact me.