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Freelance Java Developer Government Jobs in Illinois

C5T Corporation

IL · On-site

$85K - $120K/yr

Work is primarily performed on-site at Scott Air Force Base, Illinois, supporting government and ... Develop Groovy and Java scripts to support complex integration requirements. * Develop, test, debug ...

Peraton

Senior Applications Developer

Lemont, IL · On-site

$96K - $133K/yr

Build, enhance, and maintain custom enterprise solutions in Jira, Java-based applications, and ... Communicate effectively with government clients, end users, and team members via video conference ...

Peraton

Senior Applications Developer

Lemont, IL · On-site

$96K - $133K/yr

Build, enhance, and maintain custom enterprise solutions in Jira, Java-based applications, and ... Communicate effectively with government clients, end users, and team members via video conference ...

Comtech, LLC

RSA Archer Developer

Chicago, IL · On-site

Comtech delivers end-to-end solutions for business and government enterprise using ... Strong coding (java and VB Scripting) experience for data integration, connecters development and ...

Agile Defense

IL · On-site

$110K - $150K/yr

Design, implement, test, and deploy backend features using Java and .NET in AWS GovCloud. * Lead ... Ability to obtain or maintain a government security clearance. * Prior DoD or federal experience is ...

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What is the difference between Freelance Java Developer Government vs Freelance Java Developer Private Sector?

AspectFreelance Java Developer GovernmentFreelance Java Developer Private Sector
CredentialsTypically requires security clearances and government-specific certificationsGenerally requires standard Java certifications and portfolio
Work EnvironmentGovernment agencies, often in secure or regulated settingsPrivate companies, startups, or consulting firms
Employer & Industry UsagePublic sector projects, government contractsCommercial projects, private sector clients
Search & Comparison IntentSeeking government-specific freelance Java rolesLooking for private sector freelance Java opportunities

Freelance Java Developers working with government agencies often need security clearances and government-specific certifications, working in secure environments on public sector projects. In contrast, private sector freelance Java developers typically focus on commercial projects, requiring standard Java skills and certifications. The choice depends on your credentials, work environment preferences, and the type of projects you aim to pursue.

What are the most commonly searched types of Java Developer Government jobs in Illinois? The most popular types of Java Developer Government jobs in Illinois are:
What cities in Illinois are hiring for Freelance Java Developer Government jobs? Cities in Illinois with the most Freelance Java Developer Government job openings:
Freelance Java Developer Government jobs near you
Integration Suite Developer

Integration Suite Developer

C5T Corporation

IL • On-site

$85K - $120K/yr

Full-time

Medical, Dental, Vision, Life, Retirement, PTO

Posted 5 days ago

Job description

Integration Suite Developer
This role works directly with USTRANSCOM stakeholders, SAP functional teams, software engineers, and enterprise architects supporting the Joint Transportation Management System (JTMS), the Department of Defense's enterprise SAP S/4HANA transportation and logistics platform. It is an opportunity to apply advanced SAP Integration Suite expertise to support critical national defense missions while modernizing enterprise transportation, logistics, and financial systems through secure, scalable system integrations.
Work is primarily performed on-site at Scott Air Force Base, Illinois, supporting government and contractor teams in mission-focused environments.
Company Overview
C5T Corporation is a Service-Disabled Veteran-Owned Small Business headquartered at Scott Air Force Base, Illinois. Founded in 2005 by three veterans, C5T values practical, innovative-minded professionals with a passion for mission success. We specialize in bridging the gap between operational and technical domains to support critical Department of Defense missions.
Core Values: Integrity • Excellence • Patriotism
Position Summary
C5T is seeking an Integration Suite Developer to support the Joint Transportation Management System (JTMS), USTRANSCOM's enterprise SAP S/4HANA platform supporting global transportation, logistics, procurement, financial, and supply chain operations. This position serves as a key member of the application development team responsible for designing, developing, implementing, and maintaining secure, scalable integrations between SAP applications and external Department of Defense and commercial transportation systems.
The Integration Suite Developer designs and develops SAP Integration Suite (Cloud Integration/CPI) solutions, API-based integrations, event-driven architectures, and enterprise interface solutions while ensuring compliance with SAP best practices, Clean Core principles, and Department of Defense transportation requirements. The position works closely with SAP functional analysts, architects, developers, government stakeholders, and contractor teammates to deliver mission-critical transportation capabilities supporting global mobility operations.
Location: Scott Air Force Base, Illinois. Work will primarily take place in government workspaces with limited telework based on mission requirements.
Key Responsibilities
  • Analyze business requirements and collaborate with stakeholders to design enterprise integration solutions.
  • Design, develop, and maintain SAP Integration Suite (Cloud Integration/CPI) integration flows (iFlows).
  • Develop synchronous, asynchronous, event-driven, and API-led integration architectures.
  • Configure standard and custom SAP adapters including REST, SOAP, OData, SFTP, JDBC, and IDoc.
  • Configure connectors, routing rules, mappings, and security protocols including OAuth, SAML, and SSL/TLS.
  • Develop and maintain EDI integrations using Integration Advisor, Trading Partner Management (TPM), and message implementation guidelines.
  • Design and implement message mappings, transformations, and routing logic across SAP and external systems.
  • Develop Groovy and Java scripts to support complex integration requirements.
  • Develop, test, debug, implement, and maintain SAP ABAP interfaces utilizing Proxy and IDoc technologies.
  • Support SAP enterprise service architecture and Service-Oriented Architecture (SOA) principles.
  • Monitor, troubleshoot, and optimize SAP Integration Suite interfaces to ensure system reliability and performance.
  • Conduct unit, integration, and release testing for integration solutions.
  • Develop and maintain technical design documentation and interface specifications.
  • Participate in software design reviews, code reviews, and development standards compliance.
  • Assist with requirements analysis, solution design, and level-of-effort estimates.
  • Support API publishing, security, monitoring, and lifecycle management within SAP BTP.
  • Collaborate with SAP functional teams, architects, and technical stakeholders throughout the software development lifecycle.
  • Ensure integration solutions comply with SAP Clean Core principles, DoD transportation regulations, and enterprise architecture standards.
  • Support mission-critical transportation and logistics operations through reliable enterprise integration services.
Required Qualifications
  • Extensive experience developing enterprise integrations using SAP Integration Suite (Cloud Integration/CPI).
  • Strong knowledge of SAP S/4HANA, SAP ECC, SAP Business Technology Platform (BTP), and enterprise integration architecture.
  • Experience designing API-led, event-driven, publish-subscribe, point-to-point, and hub-and-spoke integration solutions.
  • Experience configuring REST, SOAP, OData, SFTP, JDBC, and IDoc interfaces.
  • Strong understanding of XML, JSON, XSLT, and enterprise message transformation techniques.
  • Experience developing Groovy scripts and API Management solutions within SAP Integration Suite.
  • Knowledge of SAP IDoc processing, SAP Proxy technologies, and ABAP integration concepts.
  • Experience implementing OAuth, SAML, SSL/TLS, and other secure integration protocols.
  • Strong understanding of EDI standards including EDIFACT and ANSI X12.
  • Strong analytical, troubleshooting, and problem-solving skills.
  • Ability to work independently and collaboratively within Agile software development teams.
  • Strong written and verbal communication skills.
  • Ability to prepare and maintain technical documentation and interface specifications.
  • Bachelor's degree in Computer Science, Information Technology, Engineering, or related field (or equivalent experience).
  • Minimum fifteen (15) years of SAP experience with at least ten (10) years supporting SAP integration middleware.
  • Active Secret security clearance (minimum required).
  • U.S. Citizenship required.
  • Ability to work on-site at Scott Air Force Base, Illinois.
Desired Qualifications
  • Experience supporting USTRANSCOM transportation operations, systems, or modernization programs.
  • Experience supporting the Joint Transportation Management System (JTMS).
  • Experience with SAP Integration Advisor and Trading Partner Management (TPM).
  • Experience with SAP NS2 or IL5-hosted SAP environments.
  • Familiarity with Department of Defense transportation regulations including the Defense Transportation Regulation (DTR) and DoD Financial Management Regulation (DoD FMR).
  • Knowledge of DoD EDI standards, including Defense Transportation Electronic Business (DTEB) standards.
  • SAP Business Technology Platform (BTP) Integration Suite certification or related SAP certifications.
  • Experience supporting mission-critical Department of Defense transportation, logistics, or financial systems.
Benefits
  • Competitive salary
  • Medical, dental, and vision insurance options
  • 401(k) with company match
  • Flexible Spending Account (FSA)
  • Supplemental benefits including accident, critical illness, and hospital indemnity coverage
  • Company-paid life insurance
  • Employee Assistance Program
  • 10 paid holidays annually
  • Responsible Paid Time Off aligned with mission needs
Equal Opportunity Statement
C5T is a merit-based employer committed to affirmative action and nondiscrimination for all qualified applicants, including individuals with disabilities and protected veterans, in accordance with Section 503 and VEVRAA.
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About C5T

Sourced by ZipRecruiter

Industry

Guided missile and space vehicle manufacturing

Company size

11 - 50 Employees

Headquarters location

Scott Air Force Base, IL, US

Year founded

2005

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