Integration & Middleware Developer (Senior / Lead)

Hello,

We have an urgent contract opening with our direct client, for a Senior Integration & Middleware Developer to support the UBOS (Unified Back Office System) project.

Please review the job details below and share suitable profiles at the earliest.

Position: Integration & Middleware Developer (Senior / Lead)
Location: Remote with onsite requirement (Middletown, PA   1 week per month)
Duration: Long Term Contract
Interview: In-person interview required

Job Description 
The Integration & Middleware Developer will be responsible for designing, developing, and optimizing complex integrations across enterprise platforms including SAP, CRM, Azure Cloud, IVR systems, and high-volume tolling backend systems.
 Key Responsibilities:

• Design and implement integrations across SAP S/4HANA, SAP BRIM, MS Dynamics 365, Azure Cloud, IVR, web portals, mobile apps, and external systems.

• Build and maintain middleware workflows for high-volume processing environments.

• Develop and maintain RESTful APIs and decentralized microservices using .Net, Python, and GoLang.

• Lead event-driven microservices implementations and optimize transaction speed, latency, and reliability.

• Integrate IVR and cloud telephony systems with CRM and tolling backend platforms.

• Apply security, encryption, and data protection strategies for sensitive payment and customer data.

• Implement observability and monitoring using Prometheus, Grafana, and Azure Monitor.

• Collaborate with cross-functional teams and produce detailed technical documentation.

• Participate in code reviews, mentoring, and continuous improvement initiatives.

Required Qualifications:

• 8+ years in Integration / Middleware development (3+ years in Senior/Lead role)

• 7+ years experience with .Net / C#

• 5+ years experience with Python

• 3+ years experience with GoLang

• Strong experience with Microservices, REST APIs, Event-Driven Architecture

• Minimum 2 projects using event-based decentralized microservices

• Hands-on with Kubernetes, Podman, container orchestration

• Strong experience with Microsoft Azure (IaaS / PaaS / SaaS)

• Bachelor s degree required (Master s preferred)

Preferred Skills:

• Experience with SAP BRIM, SAP S/4HANA, MS Dynamics 365

• IVR system integration experience (tolling or billing preferred)

• Kafka / Azure Event Hub / RabbitMQ

• Payment gateway, POS / eCommerce integrations

• Azure / Kubernetes certifications

Location & Engagement Notes:

• Remote initially, but 1 week per month onsite in Middletown, PA is mandatory

• Orientation and occasional post go-live onsite support require.

Please share qualified resumes along with candidate contact details, availability, rate confirmation, and location.