🚀 Senior Back-End Engineer & Tech Leader (14+ yrs) — I help businesses build scalable, secure, and high-performance systems that handle millions of users and requests with ease. ✅ Delivered 50+ successful projects across healthcare, fintech, ed-tech, real estate, government, and non-profit sectors. ✅ Scaled apps from 1K → 1M+ daily requests and platforms from zero → 1M+ users. ✅ Trusted by global companies including Upwork (NASDAQ: UPWK), Letshego (Botswana Stock Exchange), OCO Global, and multiple startups worldwide. If you need a reliable partner who can architect solutions from scratch or optimize existing systems for performance, security, and scale — let’s talk. Do you like Upwork's Reports & Time tracking feature? I am one of those developers who built that :) ✅ How can I help you ✓ I can handle your all end-to-end requirements analysis, UX, development, testing & delivery so you can focus on your sales & operations ✓ I can extend/develop your MPV product to production-ready ✓ I can develop products from scratch until the final delivery and support with maintained code quality and proper code coverage ✓ I can maintain your currently live products in the most optimum way by keeping quality and customer experience at first place in mind and with the minimum team and can save your cost ✓ I can choose the right technology stack and tools for your solution based on real needs and can save costs ✓ I can manage the team, do code reviews, handle CI/CD and releases, support live systems ✓ I can understand and implement the most difficult parts of software systems at very large-scale platforms like Upwork, (I am one of the Upwork platform devs) ✅ Expert areas - Java based back-end frameworks like Spring Modules (Spring MVC, Spring Security, Spring AOP, Spring Rest, Spring Data/JPA) & ZK (Zkoss) - ECMS implementation with Alfresco Content Services 4.x, 5.x, 6.x and Alfresco Process Services (Activiti) - RDBMS (MySQL, PostgreSQL, Oracle) - Graph/Document Databases MongoDB and DynamoDB - Web Crawlers with all features - Microservices based architecture implementation with Spring boot, Spring Integration and Apache Camel - AWS experience with RDS, SQS, SNS, SES, S3, and EC2 Instances - AWS API implementation experience - Queue based implementations with ActiveMQ/SQS - Test driven development implementation with unit and integration test cases with Junit/TestNG + Mockito + Spring - Database integration frameworks like JDBC/Hibernate/Sprint Data (ORM) and Spring Mongo - REST based Web Service/API implementation with Spring REST - CI/CD implementation with (Bamboo + Jenkins + Maven + Nexus + GIT(Bitbucket/Gitlab/Github)) - Payment Gateways implementations like Paypal and Stripe with debit/credit card integration - Solr/Lucene/ElasticSearch search engine integration - Jasper Reports (with DynamicJasper as well) - Agile Methodology understanding all terminology - Experience with implementing very complex queries with MySQL db - Java based Servers Tomcat/JBoss - Repositories like Git, SVN, P4V(Perforce) ✅ What my clients says (You may check in Work History) ⭐⭐⭐⭐⭐ "Vishal is best developer I have worked with till date. He is prompt responsive, an incredible problem solver, very professional, highly skilled and great team leader. He handles our portal continuous development including all project phases starting from requirement gathering(calls), task creation with all details, estimation, development, deployment on all environments, testing, creating wiki pages, choose right technology stack and AWS resources and manage tickets! He is handling dev team and also do development himself and supports everyone. Will certainly work with him again when we restart the project development! Highly recommended developer." 👤 Hugo Galicia ( CEO @ chicagodealvault.com ) ⭐⭐⭐⭐⭐ "It was a highly positive experience working with Vishal. He was conscientious, always doing his due diligence to clarify any uncertainties before starting work. He gives accurate estimates of effort/time required for work, and either delivers on time or early. Overall a very reliable and dependable worker. We hope to work together with him soon. Highly recommended!" 👤 Dominik Bieringer ( CEO @ Kandu ) ⭐⭐⭐⭐⭐ "Very experienced and diligent contractor" 👤 Abhijit Dhar ( VP - Technical Services @ Whitehat Virtual Technologies ) ⭐⭐⭐⭐⭐ "Vishal is an excellent java engineer, with great business logic, self-motivated, with deep technical knowledge. He jumped right in and understood the current project architecture with minimum KT and limited documentation. He is always eager to solve new issues. I highly recommend him and will definitely work with him again, if opportunity permits. A pleasure to work with" 👤 Chris Adams ( CEO @ eDataSource )

I have been working with Microsoft technologies since 2008, delivering robust and scalable solutions across various platforms, including Windows applications, web applications, console applications, and Windows Services. I have strong expertise in SQL and SSRS for database management and reporting. I am highly proficient in C#, VB.NET, and VBA, and have extensive experience developing applications using ASP.NET, ASP.NET Core, and MVC frameworks. I focus on building reliable, efficient, and high-quality applications tailored to client requirements.

• Hands on experience in Fusion HCM Applications (Core HR, payroll, Absence Management, Compensation ,Benefits, Oracle Time and Labor) • Skilled on Fusion HCM utilities like PBL Loader, HCM Data Loader (HDL), Spreadsheet Loader, Payroll Batch Leader, BI reports and HCM Extract Tool. • Have good understanding of Functional and Technical aspects of various modules in Oracle EBS and Fusion- Core HR, Benefit, US Payroll, Absence Management, Approval Management, Compensation, Oracle Time and Labor. • Have worked un SQL, PL/SQL, RDBMS, Oracle tools like SQL Developer, Toad • Experience in developing BI reports on EBS and Cloud. • Worked on interface programs for migrating date from E-Business Site to Fusion System • Hands on experience on HTML5, CSS3, Bootstrap for making responsive webpages. Technology Experience Cloud HCM — HCM Data loader, Payroll Batch Loader, Spreadsheet Loader, BI Reporting and HCM Extracts, Fast Formulas, OTBI, Oracle API’s, Workflows, SQL / PL-SQL Functional Modules: 1. Core HR 2. Absences 3. Benefits 4. Compensation 5. Oracle Time and Labor 6. Payroll E-Business Suite — SQL Loader, XML Publisher Reporting, WebADI. Programming Language — SQL, PL/SQL, HTML5, CSS3, Javascript, Jquery, AngularJS Database – Oracle Professional Experience Projects - 1. Implementation Project for Church Of England – Absence Management 2. HCM Implementation Project for Hudson’s Bay Company – Core HR, Absence, Benefits and Payroll 3. Implementation Project for KPMG – Absence Management 4. Support Project in Abu Dhabi for Construction Company 5. Oracle EBS R12.1.3 Implementation for Alaqaria Real Estate in Qatar. 6. Benefits Implementation for Corix Group of Companies 7. Absence Implementation for Office of Rail and Road 8. Benefits Implementation in United States for utility construction services Provider Company

I help businesses build reliable, scalable, and well-governed data solutions that turn raw data into meaningful business insights. I specialize in Data Engineering, Data Management, Data Warehousing, ETL, Data Governance, Business Intelligence, and Cloud Data Platforms. My focus is on helping organizations design, build, optimize, and manage data ecosystems that support reporting, analytics, operational efficiency, and strategic decision-making. My expertise includes: • Data Architecture & Solution Design • Data Warehouse Design & Implementation • ETL/ELT Development and Optimization • Data Integration & Migration • Data Governance & Data Quality • Master Data Management (MDM) • Metadata Management & Data Catalogs • Business Intelligence & Reporting • Cloud Data Platforms • Team Leadership & Project Delivery Technical Skills: • Informatica PowerCenter (IPC) • Informatica Intelligent Cloud Services (IICS) • Informatica IDMC • Snowflake • Databricks • AWS • Microsoft Azure • Microsoft Fabric • SQL & PL/SQL • Power BI • Tableau • QlikView • Collibra • Microsoft Purview • Secoda • JIRA & ServiceNow Services I Offer: ✔ Data Warehouse Design and Development ✔ ETL Development and Support ✔ Data Migration Projects ✔ Data Governance Framework Implementation ✔ Data Quality Assessment and Improvement ✔ Cloud Data Platform Solutions ✔ BI Dashboards and Reporting Solutions ✔ SQL Development and Performance Tuning ✔ Master Data Management (MDM) Solutions ✔ Technical Documentation and Solution Design ✔ Informatica and SQL Training I have hands-on experience across the complete project lifecycle, from requirement gathering and solution design to development, testing, deployment, and support. I work closely with stakeholders to understand business needs and deliver practical, scalable, and maintainable solutions. Whether you need help building a new data platform, modernizing existing systems, improving data quality, implementing governance processes, creating executive dashboards, or training your team, I can help deliver solutions that align technology with business goals. Let's discuss your project and how we can turn your data into a strategic asset.

I don't just write code; I architect and build end-to-end SaaS products. With over 15 years of enterprise software engineering experience, I specialize in helping founders and businesses turn complex requirements into scalable, secure, and revenue-generating platforms. Whether you are building a niche micro-SaaS from scratch, integrating custom AI workflows, or modernizing a legacy corporate system, I provide the architectural foresight and the hands-on technical execution to get it done. I bring over a decade of experience operating seamlessly alongside teams in US EST and CST timezones, acting as a strategic technical partner who prioritizes business outcomes, zero-downtime deployments, and bulletproof infrastructure. 🚀What I Build & Architect: ✅ End-to-End SaaS Platforms: Full-stack product development from database design to sleek, responsive frontends. ✅ AI & Automation: Integrating local and cloud-based LLMs, custom AI agents, and intelligent data pipelines to automate complex business logic. ✅ SaaS Monetization & Infrastructure: Seamless, secure integration of Stripe, ChargeBee, and Authorize.Net for recurring revenue models and product management. ✅ Enterprise Cloud Systems: High-performance Azure infrastructure, cloud migrations, and robust CI/CD pipelines. 💼 Core Technology Stack: ✅ Backend & Architecture: C#, .NET 8 / Core, ASP.NET MVC, Web APIs, Microservices, ETL Pipelines. ✅ Frontend Development: React, Vue.js, TypeScript, modern responsive UI. ✅ Cloud & DevOps: Microsoft Azure, AWS, Docker, Azure DevOps, CI/CD, Identity Management. ✅ Databases: SQL Server, AzureSQL, PostgreSQL, Entity Framework (EF Core), Dapper. ✅ Hardware / Desktop: Custom Windows Services, WCF, SNMP Protocols, SmartCard/NFC integrations. ⭐ Career Highlights & Proven Impact: ✅ Chief Engineer (.NET): Architected high-volume ETL data ingestion pipelines for a UK enterprise, processing complex JSON/XML data via .NET Core and PostgreSQL. ✅ Senior Cloud Consultant: Led zero-downtime Azure cloud migrations and full-stack optimizations for an international energy consortium, overhauling legacy MS SQL and Oracle databases. ✅ Lead Product Developer: Engineered an end-to-end Remote Monitoring & Management (RMM) solution to oversee SNMP-enabled network devices, drastically improving system reliability. ✅ SaaS Integration Lead: Built secure, scalable payment and subscription architectures (Stripe/ChargeBee) for multiple web applications, alongside custom SmartCard/NFC solutions for desktop software. 📍The Bottom Line: I build systems designed to scale, pivot, and generate value. If you need a lead engineer who understands both the deep technical architecture and the broader product vision, let’s talk. Click 'Invite' or 'Hire' to discuss your product roadmap.

EXPERIENCE SUMMARY: Have over 15 years of focused experience in IT industry in various fields like banking, insurance, financial, retail and manufacturing. Extensive experience in relational database administration, implementation, trouble shooting and quality management. Comprehensive experience as Oracle DBA; proficient in Oracle 9i/10g/11g/12c/19c Software Installations, Migrations, Database Capacity Planning, Automated Backup Implementation, Tuning Oracle 19c/12g/11g/10g/9i on Unix and Windows NT platform. Thorough understanding of the Oracle data dictionary. Have good experience in UNIX administration, Shell scripting. Have impeccable communication and interpersonal skill and an exceptional team player. Oracle DBA Experience: ? Over 15 years of experience in as an Oracle DBA (19c/12c/11g/10g/9i) in Production and Development environment.

I am a Senior Automation & Integration Engineer with 20+ years of experience designing, implementing, and operating enterprise integration and automation solutions across heterogeneous environments. My background combines traditional enterprise middleware with modern low-code / no-code automation platforms, allowing me to bridge legacy systems with cloud-native and SaaS ecosystems. I have extensive hands-on experience working with IBM Integration Bus, IBM App Connect Enterprise (ACE), IBM MQ, and IBM DataPower, delivering reliable, secure, and scalable integration architectures. In parallel, I have led and executed integrations using Oracle Service Bus (OSB) and Oracle SOA Suite, applying enterprise integration patterns, message mediation, and service orchestration best practices. On the open-source and API management side, I have deep expertise with WSO2 Enterprise Integrator / Micro Integrator and WSO2 API Manager, including gateway configuration, policy enforcement, mediation flows, data services, and API lifecycle management. More recently, I have focused on automation and workflow orchestration using n8n and make, building end-to-end workflows that integrate APIs, SaaS platforms, webhooks, and AI-driven processing. This combination of enterprise-grade middleware and agile automation tools enables me to deliver efficient, maintainable, and business-oriented integration solutions. I am strongly focused on reliability, performance, and observability, with solid experience in troubleshooting, JVM tuning, message flow analysis, and production support across complex integration landscapes.

Microsoft Dynamics 365 | Dynamics CRM | Power Platform | PowerApps | Power Automate | PowerBI | MicrosoftCopilot | AzureAI | D365 BusinessCentral | D365Sales | D365CustomerService | PowerPages | Dataverse | SharePoint | AIAutomation | | LowCodeDevelopment | Business Intelligence | CRM Consulting. Specializing in Microsoft Dynamics 365 CRM , Power Apps , Power Automate, Power Pages and Power Bi, Microsoft copilot As a 𝗠𝗶𝗰𝗿𝗼𝘀𝗼𝗳𝘁 𝗖𝗲𝗿𝘁𝗶𝗳𝗶𝗲𝗱 𝗣𝗿𝗼𝗳𝗲𝘀𝘀𝗶𝗼𝗻𝗮𝗹, I specialize in transforming businesses through 𝘿𝙮𝙣𝙖𝙢𝙞𝙘𝙨 365 𝘾𝙍𝙈 𝙖𝙣𝙙 𝙀𝙍𝙋, 𝙋𝙤𝙬𝙚𝙧 𝙋𝙡𝙖𝙩𝙛𝙤𝙧𝙢, 𝘾𝙤𝙥𝙞𝙡𝙤𝙩 𝙎𝙩𝙪𝙙𝙞𝙤, 𝙖𝙣𝙙 𝘼𝙄-𝙙𝙧𝙞𝙫𝙚𝙣 𝙖𝙪𝙩𝙤𝙢𝙖𝙩𝙞𝙤𝙣, ensuring seamless digital transformation and optimized business processes. 𝗖𝗼𝗿𝗲 𝗦𝗼𝗹𝘂𝘁𝗶𝗼𝗻𝘀 & 𝗘𝘅𝗽𝗲𝗿𝘁𝗶𝘀𝗲: 🔵 𝗠𝗶𝗰𝗿𝗼𝘀𝗼𝗳𝘁 𝗗𝘆𝗻𝗮𝗺𝗶𝗰𝘀 𝟯𝟲𝟱 𝗖𝗥𝗠 🔹Full-suite implementation (D365 Sales, D365 Customer Service, D365 Marketing, D365 Field Service) 🔹Custom module development, CRM customization, and workflow automation 🔹Advanced integrations using Microsoft Dataverse and Common Data Service (CDS) 🔹Data migration, system integration, and performance optimization 🔹User training, adoption strategies, and CRM consulting 🔵 𝗠𝗶𝗰𝗿𝗼𝘀𝗼𝗳𝘁 𝗣𝗼𝘄𝗲𝗿 𝗣𝗹𝗮𝘁𝗳𝗼𝗿𝗺 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁 🔹Custom Power Apps development (Canvas Apps, Model-driven Apps) 🔹Complex business process automation with Power Automate and RPA 🔹Advanced Power BI analytics, interactive dashboards, and data visualization 🔹Power Pages and Power Portal development for customer engagement and vendor portals 🔹Microsoft Dataverse integration, data modeling, and low-code development 🔵𝗠𝗶𝗰𝗿𝗼𝘀𝗼𝗳𝘁 𝗗𝘆𝗻𝗮𝗺𝗶𝗰𝘀 𝟯𝟲𝟱 𝗕𝘂𝘀𝗶𝗻𝗲𝘀𝘀 𝗖𝗲𝗻𝘁𝗿𝗮𝗹 𝗘𝗥𝗣 🔹End-to-end ERP implementation, customization, and system upgrades 🔹Manufacturing operations, supply chain, and inventory management optimization 🔹Financial management, accounting automation, and process streamlining 🔹Custom reporting, business intelligence, and data analytics integration 🔹Seamless integration with Dynamics 365, Office 365, and SharePoint 🔵 𝗔𝗜 & 𝗜𝗻𝘁𝗲𝗹𝗹𝗶𝗴𝗲𝗻𝘁 𝗔𝘂𝘁𝗼𝗺𝗮𝘁𝗶𝗼𝗻 🔹𝖬𝗂𝖼𝗋𝗈𝗌𝗈𝖿𝗍 𝖢𝗈𝗉𝗂𝗅𝗈𝗍 𝖲𝗍𝗎𝖽𝗂𝗈 implementation, custom AI agents, and chatbot development 🔹𝖠𝗓𝗎𝗋𝖾 𝖠𝖨 integration (Azure Machine Learning, Azure Cognitive Services, AI Builder) 🔹AI-powered automation, natural language processing (NLP), and predictive analytics 🔹Intelligent document processing and AI-driven insights for decision-making 🔹Generative AI solutions for content automation and business intelligence 🔵𝗣𝗼𝘄𝗲𝗿 𝗕𝗜 🔹Power BI Dashboard Design 🔹Power BI Data Modeling (Star & Snowflake Schema) 🔹DAX (Data Analysis Expressions) 🔹Power Query 🔹Interactive Reports and Visualizations 💫 What Sets Me Apart: 🔹20+ years leading enterprise software implementations and digital transformation 🔹CEO expertise with a proven track record in business process optimization 🔹Microsoft Certified Professional with deep knowledge of Dynamics 365 ecosystem 🔹Experience managing complex, multi-stakeholder projects across industries Let's discuss your Dynamics 365, Power Platform, Copilot requirement.

Your On-Demand SQL Server & Azure DBA | 15+ Years of Expertise Are you facing a critical database issue, slow performance, or planning a migration to the cloud? I help businesses secure, optimize, and modernize their databases so they can scale with confidence—without downtime or data loss. With 15+ years of experience as a Senior SQL Server Consultant & Azure Solution Architect, I’ve successfully delivered projects across: ✅ Database Administration & High Availability (Always-On, clustering, replication, DR planning) ✅ Performance Tuning & Query Optimization (reduce query times by up to 90%) ✅ Migrations & Upgrades (on-prem to cloud, cross-version, Azure SQL Managed Instance/PAAS) ✅ Business Intelligence Solutions (Power BI, SSRS, SSIS) ✅ Cloud Database Strategy (Azure IaaS, PaaS, DBaaS, hybrid architecture) 💡 I don’t just “manage” databases—I design scalable, resilient solutions that support long-term business growth. 📊 Tech Stack: MS SQL Server (2000–2019), Azure SQL, Oracle, SSRS, SSIS, Power BI 📞 Let’s discuss your database challenges today—whether it’s an urgent issue or a long-term project.

I am a skilled Java Backend Developer with strong experience designing and building scalable, high-performance backend systems. Throughout my career, I’ve developed expertise in Java and a wide range of modern backend technologies and frameworks. ✅My core skills include: ✔️Java (19+), Spring Framework, Spring Boot, Spring Data JPA, Spring Security, Spring AOP ✔️RESTful APIs, GraphQL, Web Services ✔️Hibernate, Microservices Architecture ✔️Databases: MySQL, PostgreSQL, Oracle ✔️Build & DevOps Tools: Maven, Docker, Git ✔️Event Streaming: Apache Kafka I earned a certification as an AI Automation Specialist (n8n), expanding my skill set in automation and intelligent system development. I also have working knowledge of additional technologies such as C++, Python, and frontend basics, giving me a well-rounded understanding of full-stack development. I'm passionate about clean code, efficient systems, and delivering reliable, production-ready solutions. Whether you're building a new backend service or need help improving an existing one, I'm here to help.