Senior .NET Full-Stack Engineer - Remote & AI-Driven

rethink; United States; Remote; USD 110,000 - 170,000; Full time

Benefits offered by this job

Health insurance

Dental insurance

Vision insurance

Flex Paid time off

Parental leave

Professional development assistance

401K

Job summary

RethinkFirst is seeking a Senior Full-Stack .NET Developer to design, build, test, and deploy cloud-based applications and infrastructure. You will work with C#, JavaScript/TypeScript, Angular, and microservices, while applying SOLID patterns and AI-assisted workflows to improve productivity and code quality.

Remote-friendly role in the US with a strong focus on performance, scalability, and maintainability.

Qualifications

• Bachelor's degree in Computer Science required.
• 5+ years’ development experience.
• Proficient with C#, JavaScript, and TypeScript.
• 3+ years’ experience with Azure or AWS cloud technologies.
• Experience developing and deploying IaC.
• Deep understanding of domain and event driven design.
• Knowledge of modern architecture patterns.
• Understanding of design principles, algorithms, and data structures.
• Proficient understanding of code versioning tools such as Git.
• Experience writing and automating unit testsand integration tests.
• Daily hands-on use of AI development tools such as Cursor, Claude, or GitHub Copilot as a primary part of your workflow.
• Demonstrated fluency in AI-assisted workflows — prompting effectively, reviewing and correcting AI-generated code, and knowing when not to rely on it.

Responsibilities

• Design and build applications, micro-services, and infrastructure for the Rethink First platform.
• Ensure the performance, quality, and responsiveness of applications.
• Collaborate with a team to define, design, and ship new features.
• Identify and correct bottlenecks and fix bugs.
• Help maintain code quality, organization, and automation.
• Use AI development tools such as Cursor, Claude, and GitHub Copilot as your day-to-day toolset, and help the team get more out of them without compromising code quality or security.
• Analyze and optimize applications for efficiency and performance.
• Promote robust and maintainable code, clear documentation, and deliver high-quality work on a tight schedule.

Skills

C#

.NET & .NET Core

SQL

Redis

Web API

JavaScript

HTML/CSS

Angular

TypeScript

Microservices

XUnit

Azure

CI/CD

Git

NGRX

OAuth

AI Tooling

Education

Bachelor's degree in Computer Science

Tools

Azure

AWS

Terraform

Docker

Kubernetes

Git

Cursor

Claude

GitHub Copilot

Job description

RethinkFirst is seeking a Senior Full-Stack .NET Developer to design, build, test, and deploy cloud-based applications and infrastructure. You will work with C#, JavaScript/TypeScript, Angular, and microservices, while applying SOLID patterns and AI-assisted workflows to improve productivity and code quality.

Remote-friendly role in the US with a strong focus on performance, scalability, and maintainability.