Senior .NET Backend Developer

CoreKinect; Chandler (AZ); On-site; USD 90,000 - 120,000; Full time

Job summary

CoreKinect is looking for an experienced Senior .NET Backend Developer to design and maintain scalable backend systems for enterprise applications. This role emphasizes backend architecture, API development, and database design, requiring deep expertise in building high-performance .NET applications.

The successful candidate will collaborate with various teams, improve application performance, and contribute to the development of next-generation IoT platforms. This is an on-site position at our Chandler, AZ office.

Qualifications

• 5+ years of professional backend software development experience.
• Strong proficiency with C# and modern .NET development.
• Extensive experience building APIs and backend services using ASP.NET Core.

Responsibilities

• Design, develop, and maintain backend services using C# and ASP.NET Core.
• Build and support scalable REST APIs and internal service platforms.
• Design, optimize, and troubleshoot relational database systems.

Skills

C#

ASP.NET Core

SQL development

API design

PostgreSQL

Docker

RabbitMQ

Kafka

Elastic / ELK Stack

Redis

Tools

SQL Server

Grafana

Git

Job description

CoreKinect is an innovative startup focused on building customized hardware solutions for a broad range of IoT products. The company manages the entire lifecycle, from initial design and prototyping through to manufacturing and assembly. By tightly integrating hardware, software, and cloud capabilities, CoreKinect aims to redefine the IoT space with highly scalable and efficient solutions. The organization emphasizes market-disrupting price points while maintaining product quality and reliability. Team members join a fast-moving environment where they can directly influence next-generation IoT platforms.

Position Overview

We are seeking an experienced Senior .NET Backend Developer to design, build, and maintain scalable backend systems that power enterprise-grade applications.

This role is focused on backend architecture, API development, database design, distributed systems, and production reliability. The ideal candidate has deep experience building high-performance .NET applications, designing scalable data models, and supporting production systems operating at scale.

Experience working within larger engineering organizations supporting customer-facing applications is highly valued. Experience with event-driven architectures, message processing systems, and backend platform engineering is a strong plus.

This is an on-site role supporting our Chandler, AZ office.

Key Responsibilities

• Design, develop, and maintain backend services using C# and ASP.NET Core
• Build and support scalable REST APIs and internal service platforms
• Design, optimize, and troubleshoot relational database systems
• Develop high-throughput background services and asynchronous processing workflows
• Implement and support event-driven and message-based architectures
• Improve application performance, reliability, observability, and scalability
• Collaborate with frontend, platform, cloud, and DevOps teams
• Participate in architectural planning, design reviews, and technical decision-making
• Troubleshoot issues across application, service, and database layers
• Support production deployments and ongoing operational improvements
• Contribute to long-term platform stability and engineering best practices

Required Qualifications

• 5+ years of professional backend software development experience
• Strong proficiency with C# and modern .NET development
• Extensive experience building APIs and backend services using ASP.NET Core
• Strong SQL development and database optimization skills
• Experience designing and maintaining relational database systems
• Experience with PostgreSQL and/or SQL Server
• Strong understanding of API design, data modeling, and application scalability
• Experience with asynchronous programming, concurrency, and multithreaded systems
• Familiarity with distributed systems and service-oriented architectures
• Experience with logging, monitoring, and production troubleshooting
• Experience working within Git-based development workflows
• Strong communication and collaboration skills
• Must be a U.S. Citizen and eligible to support U.S. government, defense, and public sector customer programs.
• Experience with RabbitMQ, Kafka, Azure Service Bus, or similar messaging platforms
• Experience building large-scale event processing or message ingestion systems
• DBA-level experience including:
  • Query optimization
  • Execution plan analysis
  • Indexing strategies
  • Performance tuning
• Experience supporting frontend applications serving large user bases
• Experience with Redis or distributed caching solutions
• Experience with Docker and containerized application deployments
• Experience deploying applications within Azure environments
• Experience with observability platforms such as:
  • Grafana
  • Elastic / ELK Stack
• Experience with Blazor development

Technical Environment

• C#
• REST APIs
• SQL Server
• Docker
• Git

What Success Looks Like

Within the first several months, this person will become a key contributor to our backend platform, helping improve system scalability, reliability, and performance while supporting the development of new backend services and enterprise applications.

Successful candidates will demonstrate strong ownership, sound engineering judgment, and the ability to build maintainable systems that operate reliably in production environments.