Caltech is a world-renowned science and engineering institute that marshals some of the worlds brightest minds and most innovative tools to address fundamental scientific questions. We thrive on finding and cultivating talented people who are passionate about what they do. Join us and be a part of the diverse Caltech community. Job Summary The Senior Applications Developer reports to the Information Management Systems and Services (IMSS) Associate Director of Financial Systems and will be part of a small team assigned to support a wide variety of administrative systems across Caltech. These systems include but are not limited to, Oracle E-business Suite, Oracle Analytics Cloud (OAC), data warehouse tools, Assetworks AiM, Huron Research Suite, SciQuest, Ellucian Advance and SAP Concur. The successful candidate will work with business system analysts and stakeholders to architect secure, scalable solutions within an Oracle-centric ecosystem, including Oracle E-Business Suite (EBS), Oracle APEX development, and Oracle Analytics Cloud (OAC). They will design and develop custom applications, complex integrations, and data warehouse solutions leveraging Oracle Data Integrator (ODI), PL/SQL, REST and SOAP APIs, and low-code development frameworks. The successful candidate will also play a key role in supporting the organizations planned migration to Oracle Fusion (Oracle Cloud ERP/HCM), contributing to solution architecture, data migration strategy, and roadmap alignment across legacy and modern Oracle platforms. Essential Job Duties Design, code, test, and debug complex application components and integrations using Oracle EBS, APEX, PL/SQL, Oracle Data Integrator (ODI), and REST/SOAP web services. Develop and maintain data models, ETL/ELT processes, and reporting solutions for the Oracle Analytics Cloud data warehouse. Analyze and document business and research requirements, collaborate with business analysts to elicit customer needs, and translate them into technical designs and test plans. Troubleshoot and resolve complex application, integration, and performance issues across on‑premises and cloud systems, coordinating with vendors and on-site resources as needed. Create technical documentation and contribute to end‑user training materials for supported systems and custom solutions. Collaborate with on‑site and offshore team members, providing technical guidance, code reviews, and mentoring to less experienced staff. Contribute to solution architecture, standards, and best practices that improve reliability, security, and developer productivity in an Oracle‑centric and cloud‑ready environment. Basic Qualifications Bachelors or equivalent with at least 5 years of related professional experience. Expertise in an Oracle-centric environment: RDBMS SQL, and PL/SQL Oracle E-Business Suite (EBS) Oracle APEX Oracle Analytics Cloud (OAC) Oracle Data Integrator (ODI) Oracle Visual Builder Oracle Forms Strong background in systems integration (REST and SOAP APIs), data modeling/data warehousing, and application architecture. Proficient with version control (Git), and Microsoft Office tools including Excel, Word, PowerPoint, and Visio. Strong experience with business process analysis, SDLC, QA/testing methodologies, and change control procedures. Demonstrated ability to translate technical concepts for non-technical audiences and communicate effectively at all organizational levels. Strong written and verbal communications. Understand basic business and accounting concepts. Proven ability to work independently, manage competing priorities, and deliver results in a team-oriented environment. Commitment to application and data security best practices, continuous improvement, and exceptional customer service. Preferred Qualifications Masters degree or higher in computer science or similar technical field. Experience working with one or more of the following systems: Oracle Fusion Cloud (Oracle Cloud ERP) Oracle Integration Cloud (OIC) Huron Research Suite Assetworks AiM Jaggaer SciQuest Ellucian Advance Tableau SAP Concur Experience with SaaS platforms, cloud-native architectures and services (AWS, Oracle Cloud Infrastructure, or Azure). Exposure to data analytics, ETL pipelines, or AI/ML integrations. Experience collaborating with or supervising offshore development resources. Experience working in a non-profit or higher education environment. Experience as a business analyst working directly with customers to elicit business requirements and troubleshoot system issues. Interest in continuous learning and staying current with evolving technologies. Required Documents Resume.