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Over the last 13 years, I have developed a wide range of financial and inventory management software using oracle forms and reports with back end PLSQL code including software for startup companies and small businesses. My core competency lies in complete end-end management of a new software development project, and I am seeking opportunities to build software from the ground up for you or your business. I also have experience in the following areas: SQLServer, Mysql, Sybase,DB2, MVC, Ajax, OOP, HTML, JQuery and software design and testing. , I help businesses transform operations, automate workflows, and build scalable digital platforms using modern full-stack technologies. I don’t just write code — I solve business problems From streamlining complex workflows to modernizing legacy systems and building high-performance CRM & SaaS platform, I focus on delivering solutions that increase efficiency, reduce manual effort, and drive growth. What I Can Do For You ✔ Automate your business workflows and eliminate manual processes ✔ Build or upgrade CRM systems tailored to your business needs ✔ Develop secure and compliant healthcare/SaaS applications ✔ Modernize legacy applications into scalable, cloud-ready platforms ✔ Design high-performance web apps, SaaS platforms, and APIs Why Clients Choose Me ✔ Strong expertise in workflow-heavy, data-driven systems ✔ Deep understanding of business processes, not just technology ✔ Ability to handle complex integrations & enterprise-grade solutions ✔ Focus on ROI-driven development, not just features Core Tech Stack Frontend: Angular | React.js | Next.js | Tailwind | Material UI Backend: PHP (Laravel, CodeIgniter) | Node.js (Express, NestJS) | .NET / ASP.NET Core Architecture: REST APIs | Microservices | Real-time Systems Database & Cloud: MySQL | PostgreSQL | MSSQL | MongoDB | Redis | AWS | Azure | GCP | DigitalOcean DevOps: Docker | Kubernetes | CI/CD Pipelines High-Impact Solutions Delivered ✔ Workflow Automation Systems Automated complex business processes, approvals, and operations — saving time and reducing human errors - Security industry, automotive, Real estate, Fintech ✔ Healthcare Platforms Built secure systems for patient management, data handling, and integrations while ensuring compliance ✔ CRM & Business Platforms Custom CRM solutions tailored for sales, operations, and customer lifecycle management ✔ Fintech & Lending Systems Loan origination, credit scoring, payment integrations, and compliance-heavy systems ✔ Legacy Modernization Transformed outdated systems into scalable, cloud-based, high-performance applications Industries I Work With 🔹 Workflow Automation & Business Process Management 🔹 Healthcare & HealthTech Solutions 🔹 CRM & Enterprise Business Platforms 🔹 Fintech, Banking & Lending Let’s Build Something That Drives Results If you're looking for someone who can understand your business, simplify complexity, and deliver scalable solutions using PHP, Node.js, .NET, Angular, and React — let’s talk. Send me a message and let’s turn your idea into a powerful, revenue-driving system.

Hello, Myself, Debasis from Kolkata, have 9 years of experience in Oracle APEX (ver 4.2 - 24.2) mainly, have experience in SQL, PL/SQL, Frontend part (JavaScript, jQuery, CSS, HTML). I have worked on a few 3rd party API Integrations with Oracle APEX applications and worked on AOP, BI Publisher also. I have some knowledge in Oracle Fusion Cloud API Integration in Oracle APEX. Thanks, Debasis Kundu

I am Oracle Integration Cloud (OIC) Certified Integration Specialist with strong hands-on experience in OIC-based integrations with analysis, architecture, design, build and Hypercare support expertise. I am often invited to interface business requirement discussions to assess technical feasibility. If there are grey areas, I perform small proof of concepts to test solution viability. I have integrated various boundary systems with Oracle Fusion Cloud ERP modules involving Business Event, FBDI, Rest, Soap, ERP adapters, File, Database (PL/SQL), BIP (BI Publisher) extract based patterns. OIC Experience: 8+ years Total IT Experience: 21+ years Skills: 1. Strong hands-on experience in OIC (Oracle Integration Cloud) 2. Oracle PL SQL, Packages, Procedures 3. BI publisher, BICC 4. Rest API and Soap webservice based integrations 5. Created integrations for Oracle Fusion Cloud modules like SCM, Projects, Contracts, AP, AR, CMK, GL etc 6. XML, JSON, XSLT 7. Java, Python

Oracle : - Having rich experience in Oracle Database Installation, upgrades. - install and setup high availability e.g. RAC , DG , GG - Rich experience in migration from one platform to another .\ - Rich experience in migration from on-prem to AWS/Oracle cloud . - Experience in AWS DMS - Setup the backup and recovery standards. - DB and query tunning. - troubleshoot performance issues - Automation using shell/batch/python scripting - debugging users issues . - Automate repetitive task using python/shell/batch script. - Having fair hands on automation using Ansible for Oracle DBA repetitive task. Migration: =========== - Oracle EE/SE to postgres AWS RDS using AWS SCT & DMS services - Oracle EE/SE to Oracle Cloud using datapump. - Oracle EE/SE to MariaDB using Goldengate. - Migration from one platform to another platform - Migration from oracle to databriks Automation: good in shell scripting , batch , python and ansible. recently completed oracle grid and rdbms installation automation using Ansible . Good experience in upgrades and performance tunning. Experience DBA devops and automation expertise. Postgres : ======= - Installation, upgrade minor and major - AWS Auroa RDA - postgres - troubleshooting - performance analysis Replication: Using golden gate Shareplex Debezium log miner and Openlogreplicator

A veteran in this industry, working since 29+ yrs in various technology areas and across versions. Brainbench certified Oracle Programmer and RDBMS expert. Built many products running in places. International exposure in development and training.

▪ Oracle Fusion Certified Technical Consultant with 10+ years of work experience with 5 E2E Implementations, 2 Enhancements and 1 Production support project. ▪ Experience on Oracle OIC (Oracle Integration Cloud)/ICS (Integration Cloud Service) to integrate third party systems with Oracle. ▪ Strong experience working with Oracle Reports: BI, OTBI, SmartView and FRS. ▪ VBCS (Virtual Builder Cloud Studio) to create custom User Interfaces. ▪ Created OIC common Framework integrations for exception handling and notifications to be reused in Each integration of the project. ▪ Good Technical/Functional experience in Oracle Cloud while working with various Industry Clients.