Haystack
← Back to Jobs
Engineering
HP

Senior Middleware Architect / Engineer

HR PunditsColumbus, OH🇺🇸United StatesPosted 19 Aug 2026

Why This Role Stands Out

This hybrid role offers a fantastic opportunity to architect critical middleware integrations that power essential utility operations, fostering significant career growth in a reputable company. You'll thrive here if you have a passion for designing robust APIs and event-driven architectures, and you're eager to shape the future of system connectivity. Don't miss out on this chance to advance your expertise!

Quick Overview

Work Type
Hybrid
Level
Mid Senior

Job Description

Key Responsibilities:

Design, build, and maintain middleware integration layers connecting OT systems (SCADA, smart meter/AMI, outage management) with enterprise IT (billing, CRM, SAP/ERP, data warehouse).

Implement and operate enterprise integration platforms MuleSoft, IBM WebMethods/IIB, TIBCO, Dell Boomi, or Azure Integration Services (platform per candidate specialization).

Build and maintain REST/SOAP APIs, event-driven architectures, and message queues (Kafka, IBM MQ, RabbitMQ) for real-time and batch data exchange.

Ensure integration security, reliability, and compliance with NERC CIP and other utility regulatory standards.

Modernize and troubleshoot legacy-to-modern integrations, including mainframe and SAP PI/PO connections.

Partner with grid operations, billing, customer service, and data teams to translate business requirements into integration architecture.

Produce architecture and data-flow documentation sufficient for audit and regulatory review.

Required Qualifications:

12+ years of middleware/integration engineering experience, with demonstrable delivery in utilities or another regulated industry (financial services, healthcare, energy).

Hands-on expertise in at least one major enterprise integration platform: MuleSoft, IBM WebMethods, TIBCO, Boomi, or Azure Logic Apps/Integration Services.

Direct experience integrating OT/SCADA or IoT/AMI systems with enterprise IT non-negotiable for this utility environment.

Strong API design (REST/SOAP) and event-streaming/message-queue experience (Kafka, RabbitMQ, IBM MQ).

Working knowledge of regulatory/compliance frameworks relevant to utilities (NERC CIP) or equivalent regulated-industry standards.

Bachelor s degree in computer science, Engineering, or related field, or equivalent hands-on experience.

Preferred Qualifications:

SAP PI/PO or SAP Integration Suite experience.

Cloud integration experience on Azure or AWS.

Prior direct employment or delivery experience at a utility, energy, or critical-infrastructure company.

Interview Requirement Use Case Presentation:

Every candidate must present 3 real-world middleware integration use cases they personally designed or delivered, ideally in a utility or other regulated-industry setting. For each use case, candidates should address:

Business problem and context what systems needed to connect and why.

Technical approach and platform used architecture, tools, and integration pattern.

Integration complexity systems connected, data volume, latency/throughput requirements.

Outcome and business impact measurable result.

Compliance/security considerations addressed, if applicable (e.g., NERC CIP, data protection, access control).

Skills

SCADA
IoT

Similar jobs