About Us:

Marriott International Inc., headquartered in Bethesda, Maryland, USA, was founded in May 1927 by J. Willard Marriott and Alice S. Marriott with a modest nine-seat A&W; root beer stand. Guided by the family's leadership and core principles, Marriott International today has grown into a global hospitality giant, operating approximately 10,000 properties and over 30 leading brands in more than 140 countries and territories.

From such humble beginnings to becoming the worlds largest hotel company, Marriott International has never stopped searching for inventive ways to serve its customers, provide opportunities for its associates, and grow their business. AtMarriott Tech Accelerator center (MTA), Hyderabad, India, Marriott is exploring the world we live in and all its possibilities. At Marriott Tech Accelerator, we are a team of passionate engineering minds dedicated to creating and building cutting-edge solutions that streamline operations and elevate guest experiences.

Marriott Tech Accelerator is an ANSR entity incorporated exclusively for providing services to Marriott International.

To knowmore about us, please visitMarriott Tech Accelerator careers page.

Role Title:Principal Engineer

Position ID:2026_1950, 2026_1953, 2026_1954

Job Summary

We are seekingan experienced Oracle ERP Integration Developer with10+years of experiencedesigning, developing, testing, deploying, andsupportingenterprise ideal candidate will have strong hands-on expertise in Oracle Integration Cloud (OIC), Building Integrations with REST API , Custom API development, and implementing integration security.

This role will translate functional and technical requirements into reliable integration solutions connecting Oracle Fusion ERP Cloud, third-party applications, and enterprise platforms. Knowledge of Oracle ERP business processes or other relevant functional domains is an added advantage.

Key Responsibilities:

Integration Development & Solution Delivery:

- Design, develop, configure, test, deploy, and support integrations using Oracle Integration Cloud (OIC).
- Build integrations between Oracle Fusion ERP Cloud, third-party applications, databases, and enterprise platforms.
- Implement app-driven, scheduled, file-based, and event-driven integration patterns.
- Translate functional requirements and technical specifications into maintainable integration solutions.
- Develop reusable components, mappings, lookups,



and integration utilities in accordance with established standards.

API Development, Data Transformation & Security:

- Develop REST and SOAP integrations using JSON, XML, XSD, WSDL, XPath, and XSLT.
- Design and consume secure APIs, including appropriate authentication, authorization, and access-control mechanisms.
- Apply security practices such as OAuth 2.0, basic authentication, certificates, SSL/TLS, encryption, credential management, and least-privilege access.
- Implement data mappings, validations, transformations, and enrichment logic across integrated systems.
- Configure adapters and connectivity for Oracle SaaS, REST/SOAP services, databases, FTP/SFTP, and file-based interfaces.

Quality, Operations & Release Support:

- Implement fault handling, reprocessing, logging, monitoring, and alerting for robust integrations.
- Perform unit testing, support system and user acceptance testing, and resolve defects.
- Troubleshoot production issues, perform root-cause analysis, and provide timely resolution and support.
- Prepare technical design documents, interface specifications, deployment instructions, and support procedures.
- Support source control, code reviews, CI/CD pipelines, and deployments across development, test, UAT, and production environments.

Collaboration & Continuous Improvement:

- Collaborate with integration leads, architects, functional consultants, business analysts, security teams, and application teams.
- Participate in design reviews, code reviews, sprint ceremonies, and production-readiness activities.
- Recommend improvements to integration performance, security, maintainability, and operational support.

Required Qualifications:

Education:

- Bachelors degree in computer science, Information Technology, Engineering, Information Systems, or a related discipline.

Experience:

- 10+ years of relevant experience in enterprise application integration and middleware development.
- Strong hands-on experience developing and supporting integrations using Oracle Integration Cloud (OIC).




- Experience integrating Oracle Fusion ERP Cloud or other Oracle SaaS applications with third-party systems.
- Experience delivering integrations through the complete software development lifecycle in enterprise environments.

Technical Expertise:

- Strong proficiency in Oracle Integration Cloud (OIC), including orchestration, adapters, mappings, lookups, scheduling, monitoring, and error handling.
- Hands-on API skills covering REST, SOAP, API design and consumption, JSON, XML, XSD, WSDL, XPath, and XSLT.
- Strong integration security skills, including OAuth 2.0, certificates, SSL/TLS, encryption, authentication, authorization, credential management, and secure API access.
- Working knowledge of Oracle Fusion ERP adapters, FBDI, UCM, BI Publisher, databases, and FTP/SFTP integrations.
- Familiarity with Git-based source control, CI/CD, deployment automation, and standard Dev SecOps practices.
- Robust analytical, troubleshooting, documentation, and communication skills.

Preferred Qualifications:

- Functional knowledge of Oracle Fusion ERP or related business processes is an added advantage, including exposure to:
- Oracle Fusion Financials (AP, AR, GL, FA etc.), Project Portfolio Management, Supply Chain Management, Human Capital Management, or other Oracle SaaS modules.
- Understanding of business process flows, data lineage, and integration touchpoints across enterprise applications.
- Exposure to Oracle API Gateway, Oracle Autonomous Database, Visual Builder, reporting tools, or related Oracle Cloud services.
- Relevant Oracle certification pathssuch as an Oracle Integration Cloud Specialist credential or related Oracle Cloud professional certificationare an added advantage.

Education and Certifications:

- Bachelor's or graduate degree in Computer Science, Engineering, Information Technology, or a related field, or equivalent practical experience.
- Relevant cloud, Kubernetes, Java, or AI certifications are a plus.

Work location: Hyderabad, India.

Work mode: Hybrid

Marriotts core values:

At Marriott, ourcore value make us who we are. We believe that success is never final. As we change and grow, the beliefs that are most important to us stay the sameputting people first, pursuing excellence, embracing change, acting with integrity, and serving our world. Being part of Marriott Tech Accelerator means being part of a proud history and a thriving culture.

📌 Principal Engineer_2026_1954 (India)
🏢 Marriott Tech Accelerator
📍 India