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# Principal Engineer, loT & Device Messaging

- **Company:** CAPSA HEALTHCARE
- **Location:** Canal Winchester, OH, United States (Remote available)
- **Experience:** Expert
- **Salary:** $140,000.0 - $190,000.0
- **Contract:** Permanent contract
- **Skills:** .NET Framework, Software as a Service, Computer Programming, Continuous Integration, Data Deduplication, Distributed Systems, Firmware, Key Management, Message Queuing Telemetry Transport (MQTT), OAuth, Performance Tuning, Openid Connect, Software Engineering, Visual Systems, Kubernetes, Microservices
- **Published:** September 24, 2026
- **Apply:** https://www.indeed.com/viewjob?jk=f525819e6ba51d4d

## About the Role

* A bachelor's degree in engineering or related field; master's degree is a plus
 * 12+ years software engineering experience
 * 5+ years building distributed, real-time, or high-throughput systems

## Description

We are seeking a Principal Engineer with deep loT and distributed systems expertise to lead the architecture that connects pharmacy software with conveyors, PCLs, vision systems, divertors, and label printers.

This position reports to the Senior Director of Enterprise Architecture and is a REMOTE role requiring 50% travel.

Why Join Capsa?

When you join Capsa Healthcare, you're joining a team dedicated to innovation, collaboration, and meaningful impact. Your work will directly support caregivers, improve clinical workflows, and help healthcare organizations provide better patient outcomes.

We are a global organization that values work-life balance, continuous improvement, and empowering employees to do their best work. If you're looking for an opportunity to apply your expertise to technology that truly makes a difference, we'd love to hear from you.

As the Principal Engineer, you will need experience with the following:

Deep .NET / C# Distributed Systems Expertise

 * Expert-level C# and .NET
 * Async programming
 * Performance tuning
 * Microservices architecture

IoT / Connected Device Platform Experience

 * Device identity and provisioning
 * Device twins/shadow state
 * Fleet management
 * Telemetry pipelines
 * OTA (over-the-air) configuration and firmware updates
 * Handling intermittent connectivity

Messaging, Guaranteed Delivery & Reliability Architecture

 * gRPC
 * MQTT
 * At-least-once delivery
 * Idempotency
 * Deduplication
 * Transactional outbox
 * Retry logic
 * Dead-letter queues
 * Partitioning and ordering
 * Reconciliation

Kubernetes, SaaS Platform Architecture & Operations

 * Multi-tenant SaaS
 * Containers
 * Kubernetes
 * Infrastructure as Code
 * CI/CD
 * OpenTelemetry
 * SLOs/Observability

Security for Connected Devices and Distributed Systems

 * Device identity
 * Certificate authentication
 * Mutual TLS
 * OAuth 2.0 / OpenID Connect
 * Service-to-service authorization
 * MQTT access control
 * Secrets management
 * Threat modeling