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Contingent Senior Full Stack Integration Engineer; Java​/React

Job in Fairfax, Fairfax County, Virginia, 22032, USA
Listing for: Phia LLC
Full Time position
Listed on 2026-03-12
Job specializations:
  • IT/Tech
    Cybersecurity, Systems Engineer
Salary/Wage Range or Industry Benchmark: 80000 - 100000 USD Yearly USD 80000.00 100000.00 YEAR
Job Description & How to Apply Below
Position: [Contingent] Senior Full Stack Integration Engineer (Java/React)

DISCLAIMER:

This position is in support of a current government proposal. Employment is contingent upon contract award to phia, LLC.

Status:

Proposal - Contingent upon Award

OVERVIEW

At phia we hire talented and passionate people who are focused on collaborative, meaningful work, providing technical and operational subject matter expertise and support services to our partners and clients. phia is seeking a Senior Full Stack Integration Engineer to serve as a designated Key Personnel expert for a federal agency. This high-impact role requires a  T-shaped  technical lead: someone with deep backend mastery in Java/Spring, frontend proficiency in React, and the architectural chops to manage complex middleware and messaging systems.

You will be responsible for the full lifecycle of production-grade, cloud-native microservices, ensuring they are secure, scalable, and integrated into a modern container environment.

What You ll Do
  • Architectural Development:
    Design and maintain high-performance, distributed applications using Java (Spring Boot/Cloud) and React.
  • Middleware & Messaging:
    Engineer robust integration solutions using the web Methods Suite (Integration Server, Universal Messaging) and messaging platforms like Red Hat AMQ, IBM MQ, and Apache Kafka.
  • Cloud‑Native Orchestration:
    Containerize applications using Docker and manage deployments via Kubernetes and Helm charts.
  • Automated Dev Sec Ops :
    Build and enforce fully automated CI/CD pipelines (Git Hub Actions) incorporating automated security scanning and dependency vulnerability management.
  • Data & Performance:
    Optimize data persistence across Oracle Exadata, Postgre

    SQL, and IBM Db2, utilizing Red Hat Data Grid (Infinispan) for distributed caching.
  • Observability:
    Implement comprehensive monitoring and logging using Prometheus, Grafana, App Dynamics, and Splunk.
Who You Are
  • A Technical SME:
    You possess a rare blend of  Full Stack  coding ability and  System Architect  vision.
  • A Security-First Developer:
    You don't just write code; you secure it using OAuth 2.0, OpenID Connect, and TLS standards.
  • An Integration Specialist:
    You are comfortable bridging legacy systems with modern cloud-native microservices.
Required Education + Experience
  • Education:

    Bachelor's degree in a technical discipline.
  • Experience:

    Minimum 5+ years of IT experience with proven expertise in backend Java/Spring and frontend React.
  • Key Technical Stack:
  • Integration: web Methods Suite (IS, UM, MWS).
  • Backend:
    Spring Framework (Boot, Cloud, WS).
  • Frontend:
    React

    JS.
  • Messaging: AMQP, JMS, Kafka, IBM MQ.
  • Clearance:
    Public Trust / Suitability.
GENERAL PROGRAM REQUIREMENTS
  • Citizenship:
    Must be a U.S. Citizen.
  • Work Hours:

    Monday through Friday, 0900 - 1700 EST (except for Federal holidays).
  • Work Location:

    Washington, DC. In-person
  • Travel:
    Minimal travel may be required.
WHO WE ARE

phia LLC ( phia ) is a Northern Virginia based, small business established in 2011 with focus in Cyber Intelligence, Cyber Security/Defense, Intrusion Analysis & Incident Response, Cyber Architecture & Capability Analysis, Cyber Policy & Strategy, Information Assurance/Security, Compliance, Certification & Accreditation, Communications Security, Traditional Security, and Facilities Security. phia also provides cyber operations support functions such as:
Program and Process Management, Engineering, Development, and Systems Administration that allows for Cyber Operations to efficiently integrate our customer's missions and objectives. phia supports various agencies and offices within the Department of Defense (DoD), Federal government, and private/commercial entities.

Benefits
  • True employee engagement
  • Medical Insurance
  • Dental Insurance
  • Vision Insurance
  • Life Insurance
  • Short Term & Long Term Disability
  • 401k Retirement Savings Plan with Company Match
  • Paid Holidays
  • Paid Time Off (PTO)
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Position Requirements
10+ Years work experience
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