Senior .NET Engineer — USA

NextLink Labs

8d • Remote

About The Position

NextLink Labs is seeking a motivated Senior .NET Developer with a strong background in C# and ASP.NET Core to join our Custom Software Development consulting team. A successful person in this role will be tasked with building and maintaining scalable backend services and APIs for our clients and will be able to seamlessly integrate with our clients engineering teams.
As a Senior .NET Developer, you will design and implement robust backend systems and RESTful APIs while making critical architecture decisions to rapidly deliver features for an enterprise application built on Clean Architecture and CQRS patterns. If you are a self-motivated engineer looking to take ownership of your work, we invite you to join our team at NextLink Labs.

Requirements

• 5+ years of experience building backend services with C# and .NET (ASP.NET Core)
• Strong understanding of Clean Architecture, CQRS, and the Mediator pattern (MediatR)
• Experience designing and implementing RESTful APIs with OpenAPI/Swagger documentation
• Proficiency with relational databases (PostgreSQL) and lightweight ORMs (Dapper)
• Experience with validation frameworks such as FluentValidation
• Ability to work independently and take ownership in a variety of software engagements
• Ability to scope individual features and full software projects based on client requests
• Excellent written, verbal, and interpersonal skills with the ability to build buy-in, facilitate compromise, and guide client expectations
• Strong unit-testing abilities using xUnit, Moq, and FluentAssertions
• Proficient understanding of version control systems (Git)
• Understanding of security best practices including JWT-based authentication and authorization
• Understanding of fundamental design principles behind scalable and distributed systems
• Strong problem-solving, analytical, and strategic thinking abilities, capable of making well-informed and timely decisions

Nice To Haves

• Experienced with DevOps tooling (Docker, Kubernetes, Azure Pipelines, Azure Container Registry)
• Experience with frontend frameworks, specifically ReactJS
• Familiarity with one other backend language, such as Golang, Ruby on Rails, or Python

Responsibilities

• Design, develop, and maintain scalable backend services and APIs using C# and ASP.NET Core (.NET 9)
• Implement and extend Clean Architecture with CQRS patterns using MediatR
• Work with other engineers to architect and implement modular, well-structured solutions
• Communicate directly with clients to give demonstrations and receive feedback
• Build and optimize data access layers using Dapper and PostgreSQL
• Implement request validation pipelines using FluentValidation
• Work in an agile team environment with daily stand ups, and weekly agile meetings
• Engage in code reviews of your teammates' work
• Contribute to observability and monitoring using Serilog, OpenTelemetry, and Grafana

Benefits

• Competitive salary with bonus structure
• Remote-first culture, flexible work schedule, and autonomy to do your best work.
• Healthcare (Medical, Dental, and Vision) and 401k
• Paid parental leave
• Responsibility and autonomy at a growing company
• The opportunity to build something big and exciting

What This Job Offers

• Job Type: Full-time
• Career Level: Mid Level
• Education Level: No Education Listed