Senior .NET Backend Developer

We are seeking an experienced Senior .NET Backend Developer to architect and build scalable backend services and APIs for enterprise applications, with emphasis on architecture, data modeling, and reliability. This on-site position is based in Chandler, AZ and involves collaborating with frontend, platform, cloud, and DevOps teams.

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 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
• Write clean, maintainable, testable production code
• 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

Requirements

• 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

Technologies

• C#
• .NET 8
• .NET 9
• ASP.NET Core
• REST APIs
• SQL Server
• PostgreSQL
• Background Services / Workers
• RabbitMQ
• Kafka
• Service Bus
• Azure
• Docker
• Git
• Redis
• Datadog
• Grafana
• Elastic / ELK Stack
• Blazor

Benefits

• Dental insurance
• Health insurance
• Paid time off
• Vision insurance

Position Overview

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

What Success Looks Like

• Within the first several months, contribute as a key member of the backend platform, helping to improve system scalability, reliability, and performance, while supporting the development of new backend services and enterprise applications
• Demonstrate strong ownership, sound engineering judgment, and the ability to build maintainable systems that operate reliably in production environments

Strong Plus Qualifications

• 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
• DBA level experience including: execution plan analysis
• DBA level experience including: indexing strategies
• DBA level experience including: performance tuning
• Experience supporting frontend applications serving large user bases
• Experience with Redis or distributed caching solutions
• Experience with Docker and containerized deployments
• Experience deploying applications within Azure environments
• Experience with observability platforms such as Datadog
• Experience with observability platforms such as Grafana
• Experience with observability platforms such as Elastic / ELK Stack
• Experience with Blazor development

Technical Environment

• C#
• .NET 8
• .NET 9
• ASP.NET Core
• REST APIs
• SQL Server
• PostgreSQL
• Background Services / Workers
• RabbitMQ
• Kafka
• Service Bus
• Azure
• Docker
• Git

Job Type

Full-time

Pay

USD 110,000 - 125,000 per year

Application Questions

• Will you now or in the future require sponsorship for employment?
• This position supports U.S. government programs and involves export controlled technologies. U.S. Citizenship is required. Are you a U.S. Citizen?
• Describe your experience designing, optimizing, and troubleshooting SQL Server and/or PostgreSQL databases. Include examples of performance tuning, indexing, or query optimization work you have performed.
• How many years of professional experience do you have developing backend applications using C# and .NET?
• Describe the largest backend application, API platform, or distributed system you have worked on. What was your role and what technologies were used?
• What experience do you have with message queues, event driven architectures, or distributed systems? Please include technologies such as RabbitMQ, Kafka, Azure Service Bus, or similar platforms.
• Describe a significant production issue or outage you helped resolve. What was the root cause, and what actions did you take to restore service and prevent recurrence?
• What experience do you have building and supporting backend applications in Azure, Docker, or cloud hosted production environments?

Ability to Commute

Chandler, AZ 85226 (Required)

Work Location

In person