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Sr. API Developer

Job in Merrifield, Fairfax County, Virginia, 22118, USA
Listing for: Seneca Resources
Full Time position
Listed on 2026-10-15
Job specializations:
  • Software Development
    Azure
Salary/Wage Range or Industry Benchmark: 65 USD Hourly USD 65.00 HOUR
Job Description & How to Apply Below
Position: Sr. API Developer - 17205
Location: Merrifield

Position Title:

Senior API Developer

Location:

Virginia, VA - On-Site

Pay Rate: $65/hr on W2

Position Overview

We are seeking a Senior API Developer with strong experience in API development, enterprise integration, cloud platforms, and core banking environments. The ideal candidate will have hands-on experience with Oracle Core Banking, Oracle Cloud Infrastructure (OCI), and Oracle Integration Cloud (OIC). Candidates with Temenos Core Banking experience are also highly relevant. Experience with other major core banking platforms such as FIS, Fiserv, or similar platforms may be considered when combined with strong API development and enterprise integration experience.

The successful candidate will work across cloud, API, integration, Dev Ops, security, and distributed enterprise systems within a banking environment.

Key Responsibilities Cloud Administration & Infrastructure
  • Configure and support Oracle Cloud Infrastructure (OCI) and Oracle Core Banking services.
  • Perform Azure administration, including users, groups, SSO, identity, and access control.
  • Support Azure and OCI networking and enterprise cloud integrations.
  • Assist with cloud-based infrastructure configuration, security, and troubleshooting.
API Development & Integration
  • Design, develop, test, and maintain REST APIs and enterprise integrations.
  • Develop and manage integrations using Oracle Integration Cloud (OIC).
  • Develop and maintain API integrations with Oracle Core Banking and other enterprise platforms.
  • Create and maintain Postman collections for API testing and validation.
  • Integrate Mule Soft, Oracle APIs, and other enterprise systems using secure integration patterns.
  • Implement and support API security mechanisms, including mTLS.
Dev Ops & Automation
  • Build and maintain Azure Dev Ops CI/CD pipelines for API development and testing.
  • Automate API testing using Postman and Newman CLI.
  • Automate configuration and application deployments using Azure Dev Ops and Power Shell.
  • Support infrastructure and deployment automation across Azure, OCI, and on-premises environments.
Data, Monitoring & Observability
  • Work with OCI Golden Gate and Azure Data Lake for enterprise data integration and data solutions.
  • Implement monitoring, metrics, logging, and alerting using Oracle Cloud monitoring tools and Dynatrace.
  • Troubleshoot API, integration, cloud, and distributed-system issues.
Disaster Recovery & Production Support
  • Support disaster recovery and business continuity solutions across Azure, OCI, and on-premises environments.
  • Participate in production support, incident resolution, root-cause analysis, and system troubleshooting.
  • Ensure applications and integrations meet enterprise availability, security, and reliability requirements.
Engineering & Collaboration
  • Develop solutions using Java, Python, Kafka, and Power Shell as applicable.
  • Participate in Agile development, sprint planning, technical discussions, and cross-functional collaboration.
  • Work closely with application, infrastructure, security, architecture, and business teams.
Required 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 Oracle Cloud Infrastructure (OCI) and Azure.
  • Experience with API testing tools such as Postman/Newman.
  • Experience with CI/CD and Dev Ops automation, preferably Azure Dev Ops.
  • Strong troubleshooting and production-support skills.
  • Ability to work effectively in an Agile environment.
Preferred Qualifications
  • Oracle Core Banking experience - strongly preferred.
  • Oracle Integration Cloud (OIC) experience.
  • Temen…
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