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# IRS CAS (Senior Software Developer/Operations Engineer) CIS O&M

- **Company:** Constellation West
- **Location:** Washington, DC, United States (Remote available)
- **Experience:** Expert
- **Contract:** Permanent contract
- **Skills:** Java (Programming Language), XML Schema, Agile Methodology, Linux, Elasticsearch, Middleware, JSON, OpenShift, Simple Object Access Protocol (SOAP), Software Engineering, Systems Integration, Extensible Markup Language (XML), Enterprise Software Applications, Spring-boot, SOAPAPI, Containerization, Kubernetes, Information Technology, Api Design, Api Gateway, Appdynamics, Devsecops, Servicenow, Microservices
- **Published:** October 2, 2026
- **Apply:** https://www.clearancejobs.com/jobs/9213001/irs-cas-senior-software-developeroperations-engineer-cis-om

## About the Role

* Software engineering experience
 * Enterprise API development
 * Java
 * Spring Boot
 * REST and SOAP web services
 * IBM webMethods
 * Enterprise middleware
 * Microservices architecture
 * OpenShift or Kubernetes
 * Enterprise system integration
 * Application modernization
 * Production support and troubleshooting
 * Agile development

Preferred Experience

 * IRS experience
 * Federal Government experience
 * API Gateway experience
 * DevSecOps environments
 * Containerized applications, Bachelor's degree in or equivalent experience.

## Description

Location: Remote, with occasional onsite support for meetings, deployments, production activities, or knowledge transfer as required., The candidate needs 5+ years of application-level production support for enterprise middleware and integration services, including IBM webMethods ESB and Java-based BRE/BRMG or comparable technologies. Experience should include REST/SOAP, XML/XSD/JSON, OpenShift/Linux, AppDynamics, ELK/Elastic Stack, ServiceNow incident support, production troubleshooting, RCA, release validation, failover/fallback, certificate/credential troubleshooting, consumer issue resolution, runbook updates, and 24x7 operational readiness., Constellation West is an award winning company that delivers Information Technology (IT) engineering services and solutions and non-IT subject matter expertise worldwide. Established in 1997, Constellation West is an industry leader, partnering with key organizations. As a prime contractor or preferred subcontractor, we have a continual list of opportunities to fill nationwide with multiple agencies such as the Department of Veteran Affairs, the Department of Defense, civilian agencies, and the national intelligence community. Many positions supporting the U.S. federal government require our employees to be granted security clearances., Qualified incumbent personnel currently supporting this mission will be afforded Right of First Refusal (ROFR) for applicable positions, consistent with contract requirements and contingent upon continued eligibility, performance, and government approval.