Hire the Best Oracle Application Express Developers
in India

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

Hello, I consider myself an expert in Oracle Database world and Open for new opportunities! I'm passionate about solution in Oracle Database design + APEX+ OCI + ORDS + OAC Expert Developer. Working with more than 13+ years' experience in Oracle technology stack. With proven experience of expert in database and OCI practice. ⭐| Technical Area Expertise: -------------------------------------------- ✔️Expert Oracle SQL/PLSQL Developer ✔️Expert Oracle APEX Developer ✔️Oracle Cloud Infrastructure (OCI) ✔️Oracle ORDS services REST develop ✔️Oracle VBCS and Form & Report ✔️Oracle OAC OBIEE Publisher Reports ✔️Oracle WebLogic support and Maintains ✔️AI&ML services projects ✔Data Integration ETL tools ⭐| Database- Technical Expertise: • Strong knowledge of Oracle Database versions 23ai/19c/12c/11g • Hands on Data Modelling and Database Design • Expert knowledge of Performance Optimizations Query Tuning • Expert of advance SQL quires & PL/SQL Programming • Hands on collections and records advance level exception handling • Database DBA Administration for standalone and OCI hosted database • Database connection issue with other languages TNS troubleshooting • Debugging of issue and SQL developer data import and export • Oracle WALLET manager , ACL and Network security issues • Oracle Certificate installations for API outbound call from DB • Send SMTP and HTTP send mail from database • Oracle REST Data Services (Configurations, REST APIs development) • Webservices Types REST, SOAP XML & JSON Data Processing • Data integrations and ETL tools (data extractions transform) ⭐| APEX - Technical Expertise: • Oracle Apex 24.1, 23, 22.x,20.x,19.x,18.x,5.x • SQL& PL/SQL Programming expert (Advanced Level) • Expert in writing Oracle Function, Procedure, Package ,Triggers, cursors and sequences. • Oracle Forms and reports to APEX modernization • Implemented projects on Oracle cloud AI Services (Generative AI, Language, Vision, Document, speech) with APEX projects • Oracle REST Data Services (ORDS) APIs development and ORDS Configurations • Integrations with APEX- Oracle Services, Microsoft, Google, Amazon, Digital Ocean, Login.com, Tableau, PayPal. • Webservices Types REST, SOAP XML & JSON Data Processing in APEX. • Automations With APEX services like Files processing, mails notification, Reports and Custom JOBS. ⭐| OCI - Technical Expertise • Setting up and managing OCI networking (VCN, subnets, gateways, VPNs, etc.) • Configuring OCI Web Application Firewall (WAF) to protect applications • Email Delivery setup with (DKIM setting) • Data-integrations, data-loading, OAC report setups • WebLogic, NGINX, and load balancer setups OCI • Supporting migration of workloads (VMs, databases) to OCI • Configure DNS and manage domain mapping to the new OCI resources. • Managing Identity and Access Management (IAM): domains, policies, dynamic groups, compartments • Setting up IAM policies, compartments, and security controls (Cloud Guard, Vault) • Working with Linux-based environments (Oracle Linux, RHEL) for system configuration, performance tuning, and troubleshooting • Monitoring, performance tuning, and cost optimization • Installation of Oracle database, APEX, OBI, ORDS, WebLogic infra. ⭐| OAC/OBIEE - Technical Expertise • OAC report dashboard design • Working on BIP report development • BIP report bursting and exporting • Email delivery of monthly reports using Bursting • Crystal AOP, Jasper, PLPDF, Tableau Reports. I have been working with clients across the globe. 𝐖𝐡𝐲 𝐂𝐥𝐢𝐞𝐧𝐭𝐬 𝐂𝐡𝐨𝐨𝐬𝐞 𝐌𝐞 I guarantee to solve your technical problems 100% in timely manner! Thanks for reading my profile and I am confident that we can make your project successfully together.

Senior Java Developer | Spring Boot Expert | Backend APIs | Microservices | AWS | PostgreSQL I help businesses build scalable backend systems, enterprise APIs, and cloud-native applications using Java, Spring Boot, Hibernate, Microservices, AWS, PostgreSQL, MongoDB, and Kafka. With strong experience in Java backend development, I specialize in: ✔ Java 8/11/17+ Application Development ✔ Spring Boot & Microservices Architecture ✔ REST API Development & Third-Party Integrations ✔ Hibernate / JPA / Performance Optimization ✔ PostgreSQL, MySQL, MongoDB ✔ Event-Driven Systems (Kafka, Messaging) ✔ AWS, Docker, Kubernetes ✔ Secure APIs (Spring Security, JWT, OAuth) ✔ Legacy System Modernization ✔ Full Stack Development (Angular, Node.js) What I Deliver * Production-grade Java Spring Boot applications * High-performance backend APIs * Scalable microservices architectures * Enterprise integrations and data-driven systems * Performance tuning, debugging, and system optimization * Cloud-ready deployments on AWS Why Clients Hire Me I focus on clean architecture, maintainable code, and practical solutions not overengineering. Whether you need: * A Spring Boot developer for a SaaS platform * A Java backend developer for APIs or integrations * Help with microservices, performance optimization, or legacy modernization * A developer who uses AI-assisted development to deliver faster while maintaining quality I can help. I’ve worked on complex backend systems involving real-time event processing, enterprise integrations, database-heavy workflows, and scalable cloud deployments. If you need a reliable Java / Spring Boot expert who can take ownership and deliver, let’s discuss your project.

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.