Sev1Tech is seeking a Data and Interface Integrations Systems Engineer to support the Navy Logistics (LOG) Information Technology (IT) portfolio. This portfolio is composed of 300+ afloat and ashore IT systems/applications with 150,000+ users across all Naval Systems Commands (SYSCOMs) and Naval Operational Forces (NOF), spanning Azure Cloud, AWS Cloud, Naval ships, carriers, submarines, USN/USMC aviation squadrons, and Naval Expeditionary Forces. The United States Coast Guard (USCG) is a joint user of LOG IT capabilities and is part of the program requirements. LOG IT enables essential business operations for various capability groups.

This role will support the integration of common tools, data, and APIs (COTS and GOTS), improve service performance, and reduce operational costs by reducing, eliminating, or automating duplicative services, capabilities, and data sets. The Engineer will evaluate the portfolio’s existing COTS Enterprise Service Bus (ESB) and design and implement a replacement middleware solution that bridges modern APIs, legacy interfaces, file transfers, and COTS systems (via vendor SDKs), in support of an Integrated Platform and DevSecOps Pipeline. The role combines enterprise integration engineering with data modeling and light front-end development to connect systems, data, users, and AI-enabled processes.

Job duties include, but are not limited to:

• Evaluate the existing Middleware COTS tool, including its interfaces, data flows, performance, and limitations, and develop an analysis of alternatives and migration approach for a replacement middleware solution.
• Design, build, test, deploy, and maintain middleware workflows and integrations, including triggers, routing, approvals, exception handling, retries, notifications, and auditability. Platforms may include Vertasyn and Node-RED-based flows with custom logic where appropriate.
• Develop integrations with REST APIs, legacy interfaces, databases, file/data repositories (including file transfer and batch exchanges), messaging services, identity providers, and COTS/GOTS systems using vendor SDKs.
• Analyze existing data sets and design new data models, data mappings, and transformations to support consolidation and reduce duplicative data across LOG IT systems.
• Design, document, and publish secure, well-versioned REST APIs, including JSON schemas, authentication, pagination, webhooks, request validation, and error handling.
• Build reusable workflow components, API endpoints, and error-handling patterns to standardize integration across the portfolio.
• Develop responsive web interfaces such as dashboards, forms, status views, review queues, and administrative pages for monitoring and managing integrations, using JavaScript/TypeScript and modern UI frameworks. Ensure accessibility, usability, and cross-browser responsiveness.
• Apply authentication, authorization, role-based access, secrets management, input validation, and secure logging practices in line with DoD/Navy cybersecurity requirements.
• Plan and support legacy interface migrations and cutovers with minimal disruption to afloat and ashore users.
• Create and maintain technical documentation, including workflow diagrams, interface specifications (ICDs), data mappings, test plans, and operational runbooks. Support production troubleshooting.
• Collaborate with architects, systems/data engineers, cybersecurity personnel, product owners, and end users in an Agile delivery environment.
• Design and develop solutions to complex application problems, system administration issues, or network concerns; perform systems management and integration functions.
• Deisgn data streaming interfaces that replace legacy batch and file transfers with realtime data streaming architectures. 
• Periodic travel is required: Min 4 times per year w/additional as requested by client 

• Bachelor’s degree in Computer Science or similar related discipline.
• Ability to obtain a minimum of a DoD Secret clearance.
• Minimum 3 years of professional experience delivering enterprise integrations, web applications, or workflow automations.
• Minimum 2 years of Systems Engineering experience.
• Hands-on experience designing and consuming RESTful APIs, including JSON, authentication, pagination, webhooks, request validation, error handling, and data transformation.
• Experience with relational and/or NoSQL databases, SQL, data modeling, data mapping, and structured/semi-structured data exchange.
• Experience integrating legacy interfaces, file transfers, and COTS products using vendor SDKs or APIs.
• Experience with workflow, low-code, event-driven, ESB, or automation platforms. Node-RED experience is strongly preferred.
• Proficiency in JavaScript or TypeScript; experience with a modern front-end framework such as Vue.js, React, or Angular. 
• Experience building responsive, data-driven interfaces, including forms, dashboards, and workflow/task-management views.
• Working knowledge of Git, API testing tools (such as Postman), automated testing, CI/CD concepts, and production troubleshooting.
• Ability to analyze ambiguous requirements, communicate technical designs clearly, and deliver maintainable, secure solutions.
• Hands-on experience with at least one of Apache Kafka, ActiveMQ (or comparable JMS brokers such as RabbitMQ), or Apache NiFi.
• Understanding of messaging patterns (publish/subscribe, point-to-point, request/reply, guaranteed delivery).
• Experience with data formats such as JSON, Avro, XML, and Protocol Buffers.

• Experience with the Vertasyn platform or comparable orchestration and integration platforms.
• Experience evaluating or migrating off a COTS ESB or similar middleware product.
• Experience with OAuth 2.0, OpenID Connect, SAML, LDAP, Active Directory, or enterprise IAM integrations.
• Experience with Docker, Kubernetes, Azure, AWS, or similar cloud/container environments.
• Experience integrating AI/LLM capabilities, document ingestion, retrieval-augmented workflows, or human-review processes; experience with machine learning and large-scale data processing is a plus.
• Familiarity with DevSecOps, software supply-chain security, and regulated, government, defense, or security-conscious environments.
• Familiarity with Naval enterprise/logistics information systems.
• Familiarity with digital engineering, digital thread, MBSE, SysML, or UAF.
• Experience with Kafka Connect, Kafka Streams, or a schema registry.
• Experience with NiFi clustering, MiNiFi, or NiFi Registry.
• Experience designing for DIL/tactical edge environments.

Formed through the strategic union of Sev1Tech and ERT, Entarian is a premier provider of mission-critical engineering and technology solutions. Founded on a legacy of excellence dating back to 1993, Entarian is a product of an evolved and fully diversified engineering and federal technology leader. From deep space to defense and civilian missions, Entarian delivers secure, mission-aligned digital solutions that drive national resilience and operational effectiveness. We don't just support modernization; we define it.

Join the Mission and Start your Career Journey: Apply Directly via our Careers Portal  Connect, Referrals & Inquiries? Email the team: careers@entarian.com

Entarian is an Equal Opportunity and Affirmative Action Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, pregnancy, sexual orientation, gender identity, national origin, age, protected veteran status, or disability status.