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# Senior Systems Integration Engineer with Security Clearance

- **Company:** Parsons Corporation
- **Location:** Reston, VA, United States
- **Experience:** Expert
- **Salary:** $176,900.0 - $332,400.0
- **Contract:** Permanent contract
- **Skills:** Java (Programming Language), Amazon Web Services, Advanced Message Queuing Protocol, Data Analysis, Audit Trail, Cloud Computing, Data Centers, Electronic Data Interchange (EDI), Elasticsearch, Java Message Service (JMS), Network Layer, Enterprise Messaging Systems, MongoDB, RabbitMQ, Logstash, Message Oriented Middleware, Software Engineering, Systems Integration, Management of Software Versions, Grafana, Peripherals, Infrastructure Automation Frameworks, Information Technology, Low Latency, Hashicorp, Apache Kafka, Data Management, Kibana, Restful APIs, OpenSearch, Microservices
- **Published:** November 6, 2026
- **Apply:** https://www.adzuna.com/details/5884303592

## About the Role

* Partner closely with software, cloud, network, QA, field engineering, analytics/observability, and security teams Required qualifications * Bachelor's Degree in Computer Science or a related technical field or equivalent experience.
 * 15+ years of experience in software engineering or systems integration
 * Strong hands-on experience building Java-based distributed services
 * Proven production experience with API integration and event-driven messaging
 * Experience with one or more of the following:
 * RabbitMQ, Kafka, JMS, AMQP, or similar messaging platforms
 * MongoDB, Elasticsearch/OpenSearch, or comparable data platforms
 * AWS deployment and operations in production environments
 * Experience designing and supporting integrations in high-availability, mission-critical, or regulated environments
 * Strong understanding of integration concerns such as authentication/authorization, certificate-based security, schema evolution, error handling and retries, observability and supportability
 * Experience modernizing legacy or monolithic integrations into service-oriented or microservices-based architectures
 * Ability to work effectively in a highly collaborative engineering environment with direct ownership of delivery outcomes Preferred qualifications * Experience with HashiCorp tooling, especially Consul, Nomad, and Vault, or with adjacent platforms whose skills transfer quickly
 * Experience with AWS-native services and infrastructure automation
 * Familiarity with ELK, Grafana, Kibana, Logstash, or other observability stacks
 * Experience integrating biometric devices, document readers, cameras, license plate readers, or other field peripherals
 * Experience with degraded, disconnected, or low bandwidth environments Why join Parsons in this role * Work on technically demanding integration challenges with real operational impact
 * Modernize a global platform from legacy interfaces to resilient microservices
 * Deliver software, edge systems, cloud, networking, and observability solutions

## Description

systems, and country- or customer-specific third-party platforms. The environment ranges from low-power edge clusters in austere locations to large, centralized deployments to cloud-forward AWS architectures. This role is ideal for an engineer who enjoys solving hard interoperability problems, modernizing legacy interfaces, and building resilient integrations that operate reliably under real-world network, performance, and operational constraints. What you will do * Design, build, and maintain secure, reliable integrations between a distributed platform and third-party systems using REST APIs, asynchronous messaging, secure file/data exchange, and device/peripheral interfaces

 * Modernize legacy integrations into Java-based microservices running in a distributed platform architecture
 * Build integrations across edge, data center, and AWS cloud deployment models
 * Engineer for resilience, observability, auditability, latency, and intermittent/low-bandwidth network conditions
 * Integrate with government and commercial systems such as identity and verification services, traveler data platforms, biometric and document-capture peripherals, and access-control and gate systems
 * Define interface contracts, schemas, versioning strategies, retry/idempotency behavior, and certification/test approaches
 * Troubleshoot issues across application, data, messaging, and network layers