Senior Full-Stack .NET Engineer — AI-Driven, Remote

RethinkFirst company; New York (NY); Hybrid; USD 140,000 - 190,000; 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 in New York, NY, is seeking a Senior Full-Stack .NET Developer to design, test, and deploy cloud-based applications. You will work with C#, .NET Core, SQL, and modern front-end tech while supporting microservices and infrastructure in Azure/AWS.

The ideal candidate has 5+ years of development experience, strong domain-driven and event-driven design knowledge, and a proven ability to write clean, scalable code. AI tooling like Cursor and GitHub Copilot are part of daily workflow.

Qualifications

• Bachelor's degree in Computer Science or equivalent.
• 5+ years of development experience.
• Proficient with C#, JavaScript, and TypeScript.
• 3+ years of experience with Azure or AWS cloud technologies.
• Experience developing and deploying IaC.
• Deep understanding of domain and event driven design.
• Knowledge of design principles, algorithms, and data structures.
• Proficient in Git and unit/integration testing.
• Daily use of AI development tools like Cursor, Claude, or GitHub Copilot.

Responsibilities

• Design and build applications, micro-services, and infrastructure for the platform.
• Ensure performance, quality, and responsiveness of applications.
• Collaborate with a team to define, design, and ship new features.
• Identify and fix bottlenecks and bugs.
• Maintain code quality, organization, and automation.
• Leverage AI tools daily to improve development workflow.

Skills

C#

JavaScript

TypeScript

Domain-driven design

Event-driven design

Unit tests

Git

Code review

Education

Bachelor's degree in Computer Science

Tools

Azure

AWS

Azure DevOps

Docker

Kubernetes

Terraform

GitHub Copilot

Job description

RethinkFirst in New York, NY, is seeking a Senior Full-Stack .NET Developer to design, test, and deploy cloud-based applications. You will work with C#, .NET Core, SQL, and modern front-end tech while supporting microservices and infrastructure in Azure/AWS.

The ideal candidate has 5+ years of development experience, strong domain-driven and event-driven design knowledge, and a proven ability to write clean, scalable code. AI tooling like Cursor and GitHub Copilot are part of daily workflow.