Integration/Middleware Engineer

Location: United States Applications for this position will be accepted through 11/9/26 Koniag IT Systems, LLC a Koniag Government Services company, is seeking an Integration/Middleware Engineer to support KITS and our government customer. The position is remote. This position requires the candidate to be able to obtain a Public Trust. Benefits include medical, dental, and vision insurance, 401(k) retirement plan, paid time off, paid parental leave, life and disability insurance, flexible spending accounts, commuter benefits and tuition reimbursement. The Integration/Middleware Engineer provides advanced technical engineering support for CLIENT's enterprise integration platforms, middleware environments, API management services, and data pipeline infrastructure. This individual brings deep integration engineering expertise to the design, build, operation, and sustainment of CLIENT's enterprise integration environment. This role is focused specifically on integration engineering and middleware platform operations — the technical discipline of connecting enterprise systems, automating data flows, managing APIs, and ensuring reliable, secure, and performant integration services across CLIENT's on-premises and cloud application portfolio. The Integration / Middleware Engineer works at the platform and architecture level, designing and building integration solutions that enable CLIENT's enterprise applications to communicate and operate effectively as a cohesive enterprise environment. This individual must demonstrate deep hands-on expertise in enterprise integration platforms, middleware technologies, API management, and data pipeline engineering, with the ability to independently design, build, and troubleshoot complex integrations in a federal enterprise environment that spans on-premises infrastructure, AWS, and Microsoft Azure Government. Key Responsibilities: Integration Platform Engineering & Operations: Design, build, configure, and maintain CLIENT's enterprise integration platform and middleware environments, ensuring reliable, secure, and well-performing data flows and system integrations Engineer and maintain integration interfaces, data pipelines, message queues, and event-driven integration workflows across CLIENT's enterprise application portfolio Develop and maintain integration platform configurations, connection management settings, and interface administration procedures Monitor integration platform health, performance, and error rates using Government-provided monitoring tools and dashboards Detect, diagnose, and resolve integration failures, data pipeline errors, and middleware incidents independently for moderately complex issues Escalate complex or cross-domain integration incidents to the Senior Application Operations Engineer or Applications & Integration Lead as appropriate Evaluate integration platform performance and implement engineering improvements that enhance reliability, throughput, and operational efficiency API Management Engineering: Design, build, and maintain API configurations, policies, and security controls in CLIENT's enterprise API management platform Engineer API gateway configurations, including rate limiting, authentication, authorization, and traffic management policies Develop and maintain API documentation, including endpoint specifications, data schemas, and integration guides Monitor API performance, availability, and security posture, taking proactive action to address issues and prevent service degradation Troubleshoot and resolve complex API connectivity, performance, and security issues independently Support API lifecycle management activities, including versioning, deprecation, and retirement of API endpoints Maintain accurate API inventory, endpoint configuration records, and security policy documentation Middleware Configuration & Administration: Administer and maintain CLIENT's middleware platforms, including message brokers, enterprise service buses, and event streaming platforms as applicable Engineer middleware configurations, including topic management, queue administration, consumer group management, and message routing rules Monitor middleware platform health and performance, taking proactive action to address capacity, performance, and availability issues Support middleware platform upgrades, patching, and version management activities in accordance with ITIL 4 change management practices Develop and maintain middleware administration runbooks, configuration standards, and operational procedures Coordinate with the Infrastructure and Platform Operations team on middleware platform infrastructure requirements and capacity planning Integration Security Engineering: Engineer integration security configurations aligned with FISMA, NIST SP 800-53, FedRAMP, and CLIENT cybersecurity policies Implement secure integration patterns, including encrypted data transmission, certificate management, OAuth 2.0 / SAML authentication, and API security controls Support Zero Trust Architecture implementation across integration platforms in coordination with the Microsoft Infrastructure and Network teams Conduct integration security engineering reviews and provide recommendations for improving CLIENT's integration security posture Manage integration platform certificates, credentials, and secrets in accordance with CLIENT security and key management requirements Support security assessment activities and audit evidence collection for integration platforms and API management services Cloud Integration Engineering: Engineer and maintain integrations between CLIENT's on-premises systems and cloud environments, including AWS commercial, AWS GovCloud, Microsoft Azure Government, and Microsoft 365 Support Azure Integration Services engineering, including Logic Apps, Service Bus, Event Grid, and API Management configurations Coordinate with the Microsoft Infrastructure Administrator (Senior) and Infrastructure and Platform Operations team on cloud integration requirements and architecture Engineer and maintain cloud-based data pipeline workflows and event-driven integration patterns Support FedRAMP compliance for cloud-based integration services and API management platforms Maintain accurate cloud integration architecture documentation and configuration records Integration Testing & Quality Assurance: Develop and execute integration test plans, test cases, and validation procedures for new and modified integration interfaces Conduct integration regression testing to validate that platform changes do not introduce failures or performance degradation Support end-to-end integration testing for application releases and major platform changes Maintain accurate integration test documentation, test results, and defect records in the Government ITSM platform Coordinate with application teams and the Senior Application Operations Engineer on integration test planning and execution Provide integration test results and quality assurance data to support release readiness reviews Required Qualifications: Experience: Minimum 4–6 years of hands-on enterprise integration engineering and middleware operations experience Demonstrated experience designing, building, and operating enterprise integration platforms and middleware at scale Proven experience with API management platform engineering and API security configuration Experience with data pipeline design and engineering for enterprise application environments Demonstrated experience with cloud integration engineering, including Azure Integration Services or equivalent AWS integration services Experience in a Federal or private-sector enterprise environment of comparable scale, complexity, and security posture Proven ability to independently resolve complex integration and middleware engineering problems Familiarity with FedRAMP-authorized integration platforms and Federal integration security requirements Experience implementing integration security controls aligned with NIST SP 800-53 Technical Expertise: • Expert-level proficiency in: Enterprise integration platform engineering (e.g., MuleSoft Anypoint, Dell Boomi, Azure Integration Services, IBM MQ, or equivalent) API management platform engineering and security configuration (e.g., Azure API Management, MuleSoft API Gateway, AWS API Gateway) Middleware administration (e.g., message brokers, enterprise service buses, event streaming platforms) Data pipeline design, engineering, and operations Integration security engineering (OAuth 2.0, SAML, TLS/SSL, certificate management) REST and SOAP API design, development, and troubleshooting Cloud integration engineering (Azure Logic Apps, Service Bus, Event Grid, AWS EventBridge, or equivalent) • Strong working knowledge of: Microsoft 365 and Azure Government integration patterns JSON, XML, and data transformation technologies (e.g., XSLT, DataWeave, or equivalent) Integration testing methodologies and tools CI/CD pipeline concepts relevant to integration deployments FedRAMP requirements for cloud-based integration platforms Zero Trust Architecture principles as applied to integration security NIST SP 800-53 security controls for integration platforms ITSM platforms (e.g., ServiceNow) ITIL 4 change, incident, and release management practices Scripting and automation (e.g., PowerShell, Python, or equivalent) Additional preferred certifications: MuleSoft Certified Developer – Level 1 or Level 2 MuleSoft Certified Integration Architect Microsoft Certified: Azure Integration Services Specialty AWS Certified Developer – Associate Microsoft Certified: Azure Solutions Architect Expert (AZ-305) Preferred Qualifications: Prior experience supporting Federal civilian agency enterprise integration environments Familiarity with CLIENT or similar agency integration platforms and application portfolios Experience with Agile/Scrum delivery models in an integration engineering context Experience with event-driven architecture and event streaming platforms (e.g., Apache Kafka, Azure Event Hubs) Demonstrated experience with integration observability tools and platforms (e.g., Dynatrace, Splunk, Azure Monitor) Experience supporting FISMA assessment and authorization activities for integration platforms Experience with GraphQL API design and management Experience with containerized integration deployments (e.g., Docker, Kubernetes, OpenShift) Our Equal Employment Opportunity Policy The company is an equal opportunity employer. The company shall not discriminate against any employee or applicant because of race, color, religion, creed, ethnicity, sex, sexual orientation, gender or gender identity (except where gender is a bona fide occupational qualification), national origin or ancestry, age, disability, citizenship, military/veteran status, marital status, genetic information or any other characteristic protected by applicable federal, state, or local law. We are committed to equal employment opportunity in all decisions related to employment, promotion, wages, benefits, and all other privileges, terms, and conditions of employment. The company is dedicated to seeking all qualified applicants. If you require an accommodation to navigate or apply for a position on our website, please get in touch with Heaven Wood via e-mail at or by calling 703-488-9377 to request accommodations. Koniag Government Services (KGS) is an Alaska Native Owned corporation supporting the values and traditions of our native communities through an agile employee and corporate culture that delivers Enterprise Solutions, Professional Services and Operational Management to Federal Government Agencies. As a wholly owned subsidiary of Koniag, we apply our proven commercial solutions to a deep knowledge of Defense and Civilian missions to provide forward leaning technical, professional, and operational solutions. KGS enables successful mission outcomes for our customers through solution-oriented business partnerships and a commitment to exceptional service delivery. We ensure long-term success with a continuous improvement approach while balancing the collective interests of our customers, employees, and native communities. For more information, please visit www.koniag-gs.com. Equal Opportunity Employer/Veterans/Disabled. Shareholder Preference in accordance with Public Law 88-352