Senior Middleware Developer

Job Description Our client is seeking an experienced Senior Middleware Developer to join its growing Enterprise Applications team. This role is ideal for an integration professional who thrives in designing, developing, and supporting enterprise-wide integration solutions using the Boomi AtomSphere Integration Platform . The successful candidate will have deep expertise in middleware development, APIs, enterprise application integration, cloud technologies, and system architecture. This position offers the opportunity to work on enterprise-scale initiatives while partnering with business leaders, software developers, infrastructure teams, and third-party vendors to build secure, scalable, and high-performing integration solutions. If you're passionate about modern integration architecture, cloud technologies, and enterprise automation, this is an excellent opportunity to join a rapidly growing organization with tremendous long-term career growth. Position Overview The Senior Middleware Developer is responsible for designing, developing, implementing, and supporting enterprise integration solutions across cloud and on-premise applications. This individual will serve as a technical leader for integration architecture, API development, middleware governance, and enterprise connectivity while ensuring secure, reliable, and scalable integration services. The ideal candidate possesses extensive experience with Boomi , REST APIs , EDI , SOA , and enterprise application integrations, along with a strong understanding of supply chain, finance, manufacturing, and human resources business processes. Key ResponsibilitiesEnterprise Integration Development Design, develop, and support enterprise integrations using the Boomi AtomSphere platform. Gather business and technical requirements from stakeholders and translate them into scalable integration solutions. Develop reusable integration components and enterprise integration standards. Design and implement integrations utilizing: REST APIs SOAP Web Services XML JSON Flat Files EDI transactions SQL databases Messaging technologies Build secure, scalable, and maintainable integrations between cloud and on-premise applications. Enterprise Application Integration Develop and support integrations with enterprise business systems including: ERP platforms Human Capital Management (HCM) Warehouse Management Systems (WMS) Transportation and Logistics Systems Customer Relationship Management (CRM) Financial Applications Business Intelligence platforms Cloud applications Third-party vendor solutions Experience integrating with platforms such as JD Edwards, UKG, SAP SuccessFactors, Microsoft Dynamics 365, AWS services, or similar enterprise applications is highly desirable. API & Middleware Architecture Design enterprise API strategies and reusable services. Develop and maintain RESTful APIs and web services. Implement Service-Oriented Architecture (SOA) best practices. Improve integration performance, monitoring, error handling, and scalability. Support middleware governance and integration lifecycle management. Evaluate emerging technologies and recommend modernization opportunities. Production Support Provide advanced support for enterprise integration environments. Troubleshoot integration failures, API issues, data mapping problems, and middleware performance. Support critical business integrations involving: Orders Invoices Inventory Financial transactions Human Resources Supply Chain Manufacturing Participate in production support and on-call rotations as needed. Maintain documentation for integrations, support procedures, and operational processes. Security & Data Governance Implement secure integration standards and best practices. Ensure data encryption and secure data transmission. Maintain integration security policies and access controls. Partner with Information Security teams on governance and compliance initiatives. Support disaster recovery and business continuity planning. Project Delivery Participate in enterprise integration projects from design through implementation. Develop testing strategies, test cases, and validation procedures. Support system upgrades, application implementations, and cloud migration initiatives. Collaborate with project managers, architects, developers, and business stakeholders to deliver high-quality integration solutions. Required Qualifications 8-10+ years of enterprise middleware or integration development experience. 5+ years of hands-on experience with Boomi AtomSphere or a comparable enterprise integration platform. Strong experience designing and developing enterprise integration solutions. Extensive experience with: REST APIs SOAP Web Services XML JSON EDI SQL ETL processes Experience integrating cloud and on-premise enterprise applications. Strong understanding of Service-Oriented Architecture (SOA) and enterprise integration patterns. Experience with application integration, middleware governance, and API management. Excellent troubleshooting and analytical skills. Strong verbal and written communication skills with the ability to work directly with business and technical stakeholders. Preferred Qualifications Bachelor's degree in Computer Science, Information Systems, Software Engineering, or a related field preferred. Boomi Professional or Developer Certification preferred. Experience integrating JD Edwards EnterpriseOne. Experience integrating HCM, ERP, WMS, CRM, and Business Intelligence platforms. Experience with: Microsoft Dynamics 365 SAP SuccessFactors UKG AWS services Redshift Java, JavaScript, or Groovy development experience. Experience with messaging technologies including JMS, MQSeries, ActiveMQ, or Oracle AQ. Knowledge of Supply Chain, Manufacturing, Distribution, or Logistics business processes. Understanding of AI-enabled integration and automation technologies. Familiarity with ITIL, SDLC, and Agile development methodologies. Technical SkillsRequired Boomi AtomSphere Middleware Development Enterprise Integration REST APIs SOAP Web Services XML JSON EDI SQL ETL API Development Service-Oriented Architecture (SOA) Data Mapping Cloud Integrations Application Integration Integration Architecture Enterprise Systems Integration Production Support Error Handling Performance Tuning Preferred JD Edwards Microsoft Dynamics 365 SAP SuccessFactors UKG AWS Redshift Oracle Databases Java JavaScript Groovy JMS MQSeries ActiveMQ Oracle AQ ITIL SDLC Supply Chain Manufacturing Logistics What You'll Receive Competitive base salary Annual performance bonus Monthly car allowance Hybrid work schedule (Monday, Wednesday & Friday onsite) Comprehensive medical, dental, and vision benefits 401(k) with company contribution Paid vacation and company holidays Professional development and certification support Exposure to enterprise cloud and integration modernization initiatives Long-term career growth with a rapidly expanding organization *No Sponsorship at this time, all candidates must be able to work in the US without the need of sponsorship now or in the future. This role is Hybrid 3 days per week in the office M-W-F. GTN Technical Staffing