Last month I took a client's 3-day manual AP aging process and turned it into a scheduled BIP report with multi-entity bursting — saving them 15+ hours every month, permanently. That's a normal week for me. I'm a Senior Oracle Fusion Cloud BIP/OTBI Specialist with 15 years delivering production-grade reporting solutions for enterprise clients across the US, UK, and Middle East. If your Oracle Fusion environment has a reporting gap — slow reports, manual workarounds, data model issues, missing bursting logic — I find it and fix it. WHAT I BUILD: Oracle BI Publisher (BIP) — RTF/XSL-FO templates, multi-level bursting, conditional formatting, sub-templates, Excel output OTBI Reports & Dashboards — Financials, SCM, Procurement, cross-subject area analysis, KPI dashboards Oracle Fusion Financials Reporting — GL period-close packages, AP/AR aging, FA subledger reports SCM & Procurement Reports — PO lifecycle, invoice matching, receipt confirmation, supplier performance Data Models — Multi-dataset builds, LOVs, parameters, bursting configurations, performance tuning MODULES: Financials (GL · AP · AR · FA) — SCM — Procurement — Inventory RECENT DELIVERIES: Automated a 3-day manual AP aging process into a scheduled BIP report with bursting — 15+ hours saved monthly for a US client, running without manual intervention since delivery Built a complete period-close reporting package — 12 production reports — for a US manufacturing client on Oracle Cloud Financials, delivered on go-live date Designed 20+ procurement reports for a global SCM implementation — PO, invoice, receipt, and supplier views across multiple business units WHAT YOU GET: Production-ready reports with full documentation — data model, template logic, scheduling setup — so your team can own it after handover On-time delivery. I work to your go-live dates, not mine. US time zone availability for real-time collaboration and calls Post-delivery support included — if something breaks after handover, I fix it HOW TO START: Send me a message describing your report requirement or the problem you're trying to solve. I respond within 2 hours and can usually scope the work same day.

𝗛𝗜𝗥𝗘 𝗙𝗢𝗥 𝗔 𝗪𝗘𝗘𝗞 𝗔𝗧 𝗙𝗥𝗘𝗘 𝗢𝗙 𝗖𝗢𝗦𝗧 𝗧𝗢 𝗧𝗘𝗦𝗧 𝗧𝗛𝗘 𝗦𝗞𝗜𝗟𝗟𝗦 𝗔𝗡𝗗 𝗖𝗢𝗠𝗣𝗔𝗧𝗜𝗕𝗜𝗟𝗜𝗧𝗬 𝗪𝗜𝗧𝗛 𝗧𝗘𝗔𝗠! This Offer Valid Only if YOU are Planning to HIRE for 3+ Months. I am an experienced Software Developer and Project Manager with strong core language knowledge and experience in developing and designing applications with high performance. Tools & Technologies: ✔ Core Java, Spring, Play Framework, Hibernate, JavaFX, Golang, Laravel, Lumen, Node, AngularJS, and MVC ✔ REST APIs integration ✔ MY SQL, Mongo DB, SQL Server, Oracle ✔ AWS EC2, AWS S3, AWS SES ✔ Work with Payment Gateways. ✔ Version Control Tools - Git / Github / SVN / BitBucket ✔ HTML, CSS, Bootstrap, SCSS, LESS etc. ✔ Adobe Photoshop, Illustrator, XD, Zeplin, Figma 💻 Build your web product with React.JS/Next.JS (frontend) and AWS Serverless (backend) 💻 Deploy final package to any cloud providers: Heroku, Digital Ocean, or AWS 💻 Conduct any of code review, structure and technical refactoring of existing codebase. 💻 Participate in optimizing and enhancing website speed, security and reliability. 💻 Configure and setup any of automated DevOps pipeline deployment. 🤷‍♂ ️Something else missing? Feel free to throw it up to me. Challenge accepted! 🌐 𝐑𝐄𝐀𝐂𝐓.𝐉𝐒 ✅ 𝐒𝐒𝐑: Next.js ✅ 𝐑𝐎𝐔𝐓𝐈𝐍𝐆 & 𝐒𝐓𝐀𝐓𝐄: react-router, react-redux, react-mobx ✅ 𝐔𝐈: coreui/react, material-ui, ant-design, reactstrap, ag-grid/react-table, react-chartjs-2/ recharts, react-spinkit, react-datepicker/material-ui-datepicker, pdfkit/jspdf ✅ 𝐍𝐄𝐓𝐖𝐎𝐑𝐊𝐈𝐍𝐆: axios, swr, fetch, react-toast/notistack ✅ 𝐈𝐌𝐀𝐆𝐄: react-image-lightbox, react-svg-pan-zoom, react-slick ✅ 𝐓𝐃𝐃: jest, enzyme, react-test-renderer ✅ 𝐂𝐌𝐒: strapi ☁ 𝐀𝐖𝐒 ✅ 𝐅𝐑𝐀𝐌𝐄𝐖𝐎𝐑𝐊: Serverless, AWS SAM ✅ 𝐋𝐀𝐍𝐆𝐔𝐀𝐆𝐄𝐒: Java, Python, Node.js ✅ 𝐀𝐖𝐒: Lambda, DynamoDB, RDS, API Gateway, Route53, Cognito, SES, S3, CloudFront 👀 Are you hunting for a result-oriented and cost-effective developer? 👀 Are you looking for a contributor as well as a problem solver? 👀 Are you searching for a contractor without working burdens? I’m glad to provide the best communication and help you kick the maximum out of your project with the most practical solutions. Send me the technical specs of your project and see if we are a good fit for each other. 🙋 Let’s bring your App to another level!🚀

⭐⭐⭐⭐⭐ Whether you’re a founder looking to ensure your Entreprise SSO solution, a startup CTO scaling your backend, or a team launching AI-powered products, I bring the engineering depth to turn your vision into a robust, secure, and high-performance system ready for scale. With over 8 years of experience, I’ve gained strong expertise across multiple areas, including Backend Development, Frontend Development, and DevOps. I bring not only technical depth but also excellent communication and collaboration skills, allowing me to lead and work effectively with diverse teams. I’m committed to resolving your toughest challenges efficiently in these fields: 💻 𝐁𝐀𝐂𝐊-𝐄𝐍𝐃: 𝐉𝐀𝐕𝐀 & 𝐅𝐑𝐀𝐌𝐄𝐖𝐎𝐑𝐊𝐒 • Java 23, Java 21, Java 17 LTS, Java 8+, and Legacy • Spring Boot, Spring Security, JPA, Quarkus, Spring Webflux • REST , SOAP , GraphQL API's 🌐 𝐅𝐑𝐎𝐍𝐓-𝐄𝐍𝐃 • JavaScript • Typescript • Angular • React 💾 𝐀𝐃𝐕𝐀𝐍𝐂𝐄𝐃 𝐂𝐀𝐂𝐇𝐈𝐍𝐆 & 𝐌𝐄𝐒𝐒𝐀𝐆𝐈𝐍𝐆 • Proficient with Kafka, Redis, Spring Integration • Ensuring efficient data management & communication 🔑 𝐒𝐒𝐎 & 𝐈𝐀𝐌 𝐄𝐗𝐏𝐄𝐑𝐓𝐈𝐒𝐄: • Providers & Platforms: Keycloak • miniOrange • Azure AD (Entra ID) • ADFS • Active Directory • SharePoint (IdP/SP integration) • Standards & Flows: SAML 2.0 • WS-Fed • OAuth 2.0 • OpenID Connect (OIDC) • MFA • RBAC Core IAM Capabilities: • SSO / Identity Federation: Web, mobile, cloud SSO; custom IdP/SP wiring (SAML/OAuth/OIDC) • Authorization: RBAC for least-privilege access across apps and microservices 🚀 𝐂𝐎𝐍𝐓𝐀𝐈𝐍𝐄𝐑𝐈𝐙𝐀𝐓𝐈𝐎𝐍 & 𝐎𝐑𝐂𝐇𝐄𝐒𝐓𝐑𝐀𝐓𝐈𝐎𝐍 • Adept with Docker, Kubernetes, Kong Gateway • Managing complex deployments & ensuring high availability 📊 𝐃𝐀𝐓𝐀𝐁𝐀𝐒𝐄 • MySQL, Postgres, Oracle, SQL Server, MongoDB , Elasticsearch • Robust data storage solutions 🔧𝐌𝐈𝐂𝐑𝐎𝐒𝐄𝐑𝐕𝐈𝐂𝐄𝐒 & 𝐌𝐎𝐍𝐎𝐋𝐈𝐓𝐇𝐈𝐂 • Extensive experience in architecting and reworking both monolithic and microservices apps • Deep understanding of various development strategies 🛠️ 𝐏𝐑𝐎𝐕𝐄𝐍 𝐓𝐑𝐀𝐂𝐊 𝐑𝐄𝐂𝐎𝐑𝐃 • Designing, developing, and implementing web-based software • Thorough understanding of industry standards & detailed requirement analysis 🔍 𝐂𝐎𝐃𝐄 𝐎𝐏𝐓𝐈𝐌𝐈𝐙𝐀𝐓𝐈𝐎𝐍 & 𝐃𝐄𝐁𝐔𝐆𝐆𝐈𝐍𝐆 • Active in code reviews and debugging • Expert in diagnosing & resolving performance issues, JVM optimizations, and memory management using VisualVM and JProfiler 🌐 𝐃𝐄𝐕𝐎𝐏𝐒 & 𝐂𝐈 • Proficiency with AWS, Jenkins, GitLab pipelines • Seamless navigation and utilization of diverse tech stacks 🤝 𝐀𝐆𝐈𝐋𝐄 𝐂𝐎𝐋𝐋𝐀𝐁𝐎𝐑𝐀𝐓𝐈𝐎𝐍 • Skilled in Agile methodologies, delivering projects within tight deadlines • Strong communication & teamwork, driving project success 📌 Available for hourly, fixed-rate, and ongoing B2B , B2C , SaaS engagements. 🎯 Ready to help secure your platform and streamline your desired workflows today. 🌍 Countries Collaborated With: 🇦🇹 Austria | 🇹🇳 Tunisia | 🇨🇮 Ivory Coast | 🇦🇪 United Arab Emirates | 🇫🇷 France | 🇺🇸 United States | 🇨🇦 Canada | 🇷🇴 Romania | 🇮🇳 India | 🇵🇱 Poland ...

I'm a Data Engineer & AI Solutions Expert, I help my clients "Transforming Data into Strategic Business Value". With over 12+ years of experience building Data Engineering and AI-powered solutions and delivering production ready applications. I've worked on high-profile projects for IBM, EY, ITC and Shell Professional Impact Highlights 🚀 Proven Track Record: Delivered 200+ high-impact projects with 7500+ billable hours, generating over $110,000 in client revenue across diverse industries including Data and AI, Oil & Gas, Consulting, and Enterprise Technology. My core expertise: Programming: Data, GenAI, Python, AI Agent models, VBScript, VBA Data Platforms: Power BI, Databricks, Azure Data Factory Databases: SQL Server, MySQL, SQLite, Access Methodologies: Agile, Waterfall, Hybrid Project Management Data Engineering & Intelligence - Advanced Data Management: Architected complex data solutions using SQL Server, MySQL, SQLite, leveraging cutting-edge techniques to transform raw data into actionable insights - Data Integration Mastery: Developed comprehensive visualization and integration strategies using Power BI, Azure Data Factory, and Databricks - Automation Excellence: Implemented AI-driven automation solutions that optimize operational efficiency and reduce manual processing time by up to 60% AI-Powered Reporting Solution - Created an automated reporting system integrating multiple data sources - Reduced reporting preparation time by 75% through intelligent automation - Client Testimonial: "Pankaj from Bindspace Technologies delivered beyond our expectations" Transformative Project Examples Enterprise Data Optimization for Shell Energy - Developed a predictive analytics dashboard reducing operational costs by 35% - Implemented machine learning models to forecast energy consumption patterns - Client Feedback: "Exceptional work that redefined our data strategy for our organization" Why Choose Me? ✓ Tailored Solutions: Custom-designed data products addressing unique business challenges ✓ Proven Expertise: 12+ years working with industry leaders like IBM, EY, Shell, KPMG ✓ End-to-End Support: From data strategy to implementation and optimization ✓ Flexible Engagement: Scalable solutions for businesses of all sizes Let's Unlock Your Data's Potential! Ready to transform your data into a strategic asset? I specialize in crafting innovative solutions that drive growth, efficiency, and competitive advantage. Connect now and let's revolutionize your data strategy! Keywords: Data Engineering, AI Solutions, Power BI, Python, Databricks, Machine Learning, Data Automation, Business Intelligence

I have a 3 years Professional Working experience in Oracle Platform (Oracle Cloud, Apex, Pl-SQL, SQL, Oracle Business Intelligence), Html, CSS , JavaScript, Java, Agile method, Data Structure and algorithm. I Successfully Complete and Engaged more then 15 project include Bangladesh Police HR And Crime Data Management System. in my professional carrier, I am a dedicated for my job. Thanks.

AI-focused Technical Leader and hands-on Engineer with 22+ years building products from zero to production. I architect and ship AI-powered SaaS, B2B/B2C platforms, and enterprise systems - writing code daily while leading teams and strategy. 📞 Invite me to your job for a FREE 15-minute consultation! 📞 Highlights: 🤝 56,000+ hours & 220+ jobs completed (with my Upwork agency), all with 5-star reviews 🤝 Top 1% of All Talent on Upwork & "Expert Vetted" Badge 🤝 $2M+ revenue generated on Upwork alone 🤝 18+ years of Senior Technology Executive management experience in roles such as CEO, CTO, VP R&D, Head of Engineering, Systems/Software/Cloud Architect, DevOps, PM, etc. Technical leadership and managing remote and on-site teams of up to 30 What I Do: I help companies build AI-first products - from initial architecture to production. Think of me as your remote, hands-on CTO and Lead Engineer: I design systems, write code, manage engineering teams, collaborate with designers on UX, and ship. My company builds large open-source platforms (ERP/CRM/HRM, Commerce, Work / Project Management), and I bring that same 0-to-1 product-building experience to every client engagement. Over the years, I've helped hundreds of companies, from startups to large international enterprises, and have conducted business in the US, Israel, Ukraine, and Bulgaria. Worked remotely with companies worldwide: US, UK, Norway, Ukraine, India, Australia, etc. Worked on multiple highly complex commercial projects, both in startup and enterprise environments, with small and large teams. I can work with the team or develop software independently from the ground (to production), keeping the software quality along the way extremely high! Rates: - Short-term / consulting: $180/hr - Long-term engagements: $120/hr Services: - AI strategy, architecture & implementation for existing and new products - Fractional CTO / technical leadership for startups and scale-ups - Product architecture, estimation & 0-to-1 builds - Code reviews, performance optimization & solving complex technical problems - Team mentoring and engineering process improvement (Agile/Lean) Short summary of software engineering expertise: ◾ AI Agents & Multi-Agent Systems (LangChain, CrewAI, AutoGen, custom orchestration) ◾ LLM Integration (OpenAI / ChatGPT, Anthropic / Claude, Gemini, local models) ◾ RAG Pipelines, Embeddings, Vector Search, AI Chatbots ◾ ML / Deep Learning (TensorFlow, PyTorch, Python) ◾ SaaS (B2B & B2C) / Multi-tenancy Architecture ◾ Cloud & DevOps: AWS, Azure, GCP, Docker, k8s, CI/CD, Serverless ◾ 15+ years with .NET / C# ◾ 10+ years with JavaScript / TypeScript ◾ 5+ years with Node.js / NestJS ◾ Python (AI/ML, Django, Serverless), Java, and more In technology, my focus spans AI-powered systems, Web, Mobile & Distributed Software: - AI & ML: LLM orchestration (OpenAI, Anthropic, Gemini), AI agents, RAG, vector databases, TensorFlow, PyTorch, prompt engineering, fine-tuning. - Backend: Node.js / NestJS, .NET / ASP.NET Core, Python, JS / TypeScript. - Frontend: React/ReactNative, Angular, Vue. - Data: PostgreSQL, MongoDB, MS SQL, MySQL, Kafka, RabbitMQ, ElasticSearch. - Cloud & DevOps: AWS, Azure, GCP, Docker, Kubernetes, Serverless, CI/CD. Some of the latest OSS projects include: - An Agentic Runtime that Autonomously Builds and Maintains Web Apps - Orchestration System for Autonomous AI Companies - AI-powered Open-Source ERP/CRM/HRM Platform - Work and Project Management Platform with AI features - Modern Commerce Platform (reactive server, mobile & web apps) Feel free to message me to get more details about my experience relevant to your specific project, I am always open to new opportunities! 📞 Reach out by inviting me to your project right now! 📞 Looking forward to working with you on amazing projects, - Ruslan

As a Database Developer with over 5 years of experience, I've developed a deep understanding of Oracle technologies and tools, including Oracle Database, Oracle Forms and Reports and Oracle APEX. I'm an Oracle Certified Professional with expertise in SQL, PL/SQL and Fusion Middleware and have worked on a variety of projects for clients across different industries. My skills include: Developing and maintaining Databases and applications Designing and implementing database structures, including schema, tables, indexes, and views Writing and optimizing SQL queries and stored procedures Building and customizing Oracle Forms and Reports Developing and deploying web applications using Oracle APEX I'm highly skilled in problem-solving and have a keen eye for detail, which allows me to troubleshoot issues and ensure that everything is working as it should. I'm committed to delivering high-quality work that meets my clients' expectations and requirements, and I always strive to exceed their expectations. If you're looking for a Database Developer who can help you achieve your Database-related goals, look no further. Let's chat and see how I can help you.

✅ WHAT DO I DO? - I am a professional "Senior Full-Stack .NET Developer" with more than 9 years of rich experience in .NET Core, .NET MVC, .NET 5 to 10, C#, EF, Dapper, PSP Integrations, ERP integrations, Third party integrations, MSSQL, MySQL, PostgreSQL, Oracle DB, MongoDB, MS Azure, DevOps, Git and other relevant technologies and tools. - I provide the best quality development services by using both conventional and latest approaches with the fastest delivery. I shape the ideas of my clients to develop high-technology web apps. - I offer productive and highly engaging web development solutions for your custom business ideas or needs. - My vast experience has given me a solid foundation to Design, Build and deliver quality projects. - The scalable QA approach to optimize the structure, stability, and growth of project. ✅ SKILLS AND EXPERTIESE ● Backend - ASP.NET MVC, Core All Versions, currently working on .NET Core 6 - C# and VB Programming Language - AutoMapper - MS Azure - Web API (REST, SOAP, JSON, XML) - API's integrations (Payment Gateways, ERP API's, PSP Integrations, any cloud platform integration, etc) - LINQ - Entity Framework and Dapper ORM - OOP - Multi-Layer Architecture - Microservices - Clean/Onion Architecture - Repository Design Pattern - CQRS ● Frontend - Blazor, Razor in frontend - KendoUI - AngularJS, JavaScript, JQuery, Ajax - HTML5, CSS3, Bootstrap5 ● Database - MSSQL Server, Azure SQL, MySQL, PostgreSQL, OracleDB, MongoDB - TSQL, SQL queries, Stored procedures - SQL Functions - Triggers ● Source Control - GitHub - GitLab - SourceTree - Azure DevOps (TFS/Git) - Bitbucket ● Project Management Tools - JIRA - Trello - DevOps - Monday.com - MS Project ● Communication Tools - Teams - Slack - I have excellent communication skills as I worked with many international clients in my career. ● Others - Full-Stack Web Development. - Requirements Analysis. - Braintree Payment Gateway Integration. - Stripe Payment Gateway Integration. - ChargeBee Integration - Any type of PSP integrations for crypto wallet or any FinTech related merchant i.e. ExLink Pay, VN Pay, My Fatoora, PaymentAsia, CheezeePay, Quick Pay, 1-2 Pay, Coorporation Pay, Help2Pay, Skrill, Neteller, Dragon Pay, etc. - Optimized code writing practice. - Best code efficiency approach. - Follow different Software Development Models as per requirements like Agile, SCRUM etc. - Deployment on cloud servers and other servers as well. ✅ WORKING STYLE - Agile based project management. - Full-time developer (40+ hours per week) - I accompanies you at each development step and keeps you informed about every segment. Once completed, following up is certainly much crucial step to collect feedback and to ensure if anything needs attention to detail, it will be done right there. ✅ COME AND VISIT ME - Feel free to contact me to get the best and quality work to remove roadblocks in your way to success and efficiency. 💬 Let’s turn your idea into a powerful, high-performing product. 🔑 𝐊𝐞𝐲𝐰𝐨𝐫𝐝𝐬 that can be used to find me: #FullStackDeveloper #DotNetDeveloper #CSharpDeveloper #ASPNetDeveloper #NetCore #WebDeveloper #FrontendDeveloper #HTMLCSS #JavaScriptDeveloper #TypeScript #ReactJS #Angular #Blazor #BackendDeveloper #RESTAPI #Microservices #EntityFramework #WebAPI #SQLDeveloper #DatabaseDesign #MongoDB #PostgreSQL #MySQL #Dapper #AzureDeveloper #AWSDeveloper #CloudComputing #Docker #Kubernetes #DevOpsEngineer #CICDPipelines #VisualStudio #Git #Postman #Swagger #IIS #UnitTesting #Selenium #IntegrationTesting #DebuggingExpert #AgileDeveloper #ScrumTeam #SoftwareEngineer #ProblemSolver VUE. JS | HTML | CSS | JavaScript | jQuery | SQL | Web Architecture | C# | Figma | UI/UX | BootStrap | Web Design | ChatGPT API Integration | React JS | .NET Core | .NET Framework | API Integration | ASP.NET | ASP.NET MVC | ASP.NET Web API | Amazon Web Services | Auth0 | Azure DevOps | C# | Desktop Application | Docker | Domain-Driven Design | Front-End Development | Google Calendar API | Microservice | Microsoft Azure | Microsoft IIS | Microsoft SQL Server| MongoDB | PostgreSQL | RESTful API | Telerik | TypeScript | Web Application | Web Development | backend | Angular | Angular 15+ | AngularJS

🥇TOP RATED PLUS | 👨🏻‍💻 4000+ WORKING HOURS 💼 7+ YEARS EXPERIENCE | 🏆100% Job Success ⭐️⭐️⭐️⭐️⭐️ "I had the pleasure of managing Dasun (Era), a senior software engineer, on our recent project, and I must say, it was a fantastic experience. Era's code was top-notch, well-structured, and he always delivered more than we expected. What really stood out was Era's communication skills; he kept the team in the loop, asked smart questions, and had great suggestions. Working with Era was a breeze - he was professional, met deadlines, and handled challenges with ease. I can't wait to hire him again ASAP; he's a star in our team! ⭐️⭐️⭐️⭐️⭐️"I was very happy with the work from Era on a spring web flux project. He produced code that was excellent quality and proactively fixed issues and made improvements as he worked through the tasks." I am a seasoned software engineer with over 7 years of experience, specialising in Java, Spring Boot, and REST API development. My passion lies in tackling new challenges and establishing long-lasting collaborations that drive innovation and excellence in every project. Technical Expertise: ✅ Proficient in Java, including Java 8, Java 11, Java 17. ✅ Expertise in developing web applications in the Banking and Financial domain for over the 5 years. ✅ Backend development experience with Spring Boot Spring webflux, REST API development, application security, scalability, and proficiency in Spring Data JPA, Hibernate, Spring Cloud, and Spring Security. ✅ Proficiency in Microservice design pattern with Clean code principals and Domain Driven Design and inter service async communication with Event-Driven architecture, CQRS (Command Query Responsibility Segregation), SAGA patterns, Load balancing, Config management, and Gateway implementation. ✅ Knowledge of application security best practices, including OAuth 2 implementation, JWT token-based authentication, and authorization. ✅ Experience in Test-Driven Development (TDD) and unit testing using JUnit 5 and Mockito, as well as snapshot testing with Jest and Enzyme. ✅ Familiarity with both relational and NoSQL databases, including MySQL, Oracle, PostgreSQL, MongoDB, and Amazon QLDB. ✅ Hands-on experience with AWS, including designing and implementing highly scalable and secure infrastructure plans, application deployment, and CI/CD pipelines using AWS services like CodeCommit. Proficiency in migrating on-premises applications to the AWS cloud. ✅ Expertise in DevOps practices, including CI/CD with Jenkins and GitHub Actions, containerization using Docker, terraform script development, Ansible, Container Orchestration with Kubernetes clusters and Amazon EKS (Elastic Kubernetes Service), and version control using Git. ✅ Experience in setting up monitoring and logging solutions like Prometheus, Grafana, ELK (Elasticsearch, Logstash, Kibana), or AWS CloudWatch to ensure the health and performance of applications. ✅ Understanding of distributed system concepts, including message brokers like Apache Kafka or RabbitMQ, and the implementation of distributed transactions. ✅ Expertise in optimising application performance, including profiling, caching strategies, and database query optimisation. ✅ Proficiency in modern Software Development Life Cycle (SDLC) methodologies, including Agile (SCRUM), and tools such as Jira, Confluence, and SonarQube. ✅ Mastery of Object-Oriented Programming (OOP) concepts, SOLID principles, and Data Structures & Algorithms. I have a proven track record of delivering exceptional results for my clients, including: ☑ Boosting client revenue by 30% through targeted web application improvements. ☑ Increasing code quality by 80% using best practices and the Boy Scout Rule. ☑ Mentoring junior developers to enhance their Java skills and problem-solving abilities. I am confident that my strong technical background and commitment to excellence will make me an asset to your team. If you would like to discuss how I can contribute to your next project, please don't hesitate to reach out. Thank you for considering my application, and I look forward to speaking with you soon. Best regards, Dasun.

🚀 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 )