Senior API Developer: Cloud & Core Banking Expert

Seneca Resources Company, LLC; Merrifield (VA); On-site; USD 83,000 - 96,000; Full time

Job summary

Seneca Resources seeks a Senior API Developer to drive API development and cloud integration within a banking environment. You will work with Oracle Core Banking, OCI, and Oracle Integration Cloud to design and maintain REST APIs and enterprise integrations.

The role covers API security (mTLS), DevOps automation, and cross-team collaboration across Azure, OCI, and on‑premises systems. Temenos Core Banking and major core banking platforms are considered for strong API experience.

Qualifications

• Strong hands-on experience in API development and enterprise integration.
• Strong experience designing and developing REST APIs.
• Experience working with core banking platforms or core banking ecosystems.
• Strong understanding of distributed systems and enterprise integrations.
• Experience with one or more cloud platforms, preferably OCI and Azure.
• Experience with API testing tools such as Postman/Newman.
• Experience with CI/CD and DevOps automation, preferably Azure DevOps.
• Strong troubleshooting and production-support skills.
• Ability to work effectively in an Agile environment.

Responsibilities

• Cloud Administration & Infrastructure: Configure and support OCI and Oracle Core Banking services; Azure administration (SSO, identity, access control); manage cloud networking; assist with security and troubleshooting.
• API Development & Integration: Design, develop, test, and maintain REST APIs and enterprise integrations; manage integrations with OIC; maintain API testing with Postman collections; integrate MuleSoft and Oracle APIs.
• DevOps & Automation: Build/maintain Azure DevOps CI/CD pipelines; automate API testing with Postman and Newman; automate deployments with Azure DevOps and PowerShell; support cross-cloud automation.
• Data, Monitoring & Observability: Work with OCI GoldenGate and Azure Data Lake for data integration; monitor with Oracle Cloud monitoring tools and Dynatrace; troubleshoot cross-system issues.
• Disaster Recovery & Production Support: Support DR/BC across Azure, OCI, and on-premises; incident resolution and root-cause analysis; ensure availability and security.
• Engineering & Collaboration: Develop with Java, Python, Kafka, PowerShell; participate in Agile; collaborate with application, infra, security, architecture, and business teams.

Skills

API development

enterprise integration

cloud platforms

core banking

OCI

OIC

Temenos Core Banking

FIS/Fiserv

Postman

Newman

Azure DevOps

PowerShell

Java

Python

Kafka

mTLS

Dynatrace

Tools

Postman

Newman

Azure DevOps

PowerShell

Job description

Seneca Resources seeks a Senior API Developer to drive API development and cloud integration within a banking environment. You will work with Oracle Core Banking, OCI, and Oracle Integration Cloud to design and maintain REST APIs and enterprise integrations.

The role covers API security (mTLS), DevOps automation, and cross-team collaboration across Azure, OCI, and on‑premises systems. Temenos Core Banking and major core banking platforms are considered for strong API experience.