Senior Systems Integration Engineer

Parsons is seeking a Senior Systems Integration Engineer to help design, modernize, and sustain integrations for a mission-critical, globally deployed identity and mobility platform. This is a hands-on engineering role for someone who has built and operated complex system-to-system integrations across Java microservices, event-driven architectures, edge environments, and cloud platforms.

You will work on both standards-based and custom integrations spanning external data providers, identity and verification services, biometric and peripheral devices, access-control 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
• Partner closely with software, cloud, network, QA, field engineering, analytics/observability, and security teams

• 8+ 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, * 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

Join a team where senior engineers have meaningful technical ownership and influence

Security Clearance Requirement: An active Top Secret SCI security clearance is required for this position.

This position is part of our Federal Solutions team.

The Federal Solutions segment delivers resources to our US government customers that ensure the success of missions around the globe. Our intelligent employees drive the state of the art as they provide services and solutions in the areas of defense, security, intelligence, infrastructure, and environmental. We promote a culture of excellence and close-knit teams that take pride in delivering, protecting, and sustaining our nation’s most critical assets, from Earth to cyberspace. Throughout the company, our people are anticipating what’s next to deliver the solutions our customers need now.

Salary Range: $176,900.00 - $332,400.00

We value our employees and want our employees to take care of their overall wellbeing, which is why we offer best-in-class benefits such as medical, dental, vision, paid time off, Employee Stock Ownership Plan (ESOP), 401(k), life insurance, flexible work schedules, and holidays to fit your busy lifestyle!

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