Senior .NetCore Engineer, ReactJS, AWS, Claude AI

Jobtailor; Denver (CO); On-site; USD 140,000 - 180,000; Full time

Job summary

Jobtailor in Denver, CO seeks an accomplished senior software engineer to lead full-stack development across .NET Core and modern JavaScript frameworks. You will drive system evolution, modernize legacy platforms, and translate orthodontic insurance rules into scalable services.

You will own Epics end-to-end, mentor engineers, and champion AI-assisted engineering to boost efficiency. The role requires deep experience with .NET, React/Angular, AWS, and CI/CD, plus a track record of delivering

Qualifications

• 10+ years of professional software development experience in .NET Core/.NET ecosystem.
• Strong hands-on experience with .NET Core/Framework and SQL Server relational design.
• Extensive experience building responsive UIs using React and/or Angular.
• Practical experience applying Domain-Driven Design (DDD) principles and service-based/distributed architectures.
• Strong proficiency with AWS services (or other major clouds), CI/CD pipelines, and infrastructure provisioning.
• Familiarity with high-volume batch processing and data streams.

Responsibilities

• Design and evolve complex, service-based architectures and distributed systems.
• Modernize legacy platforms with an emphasis on simplicity, maintainability, and ROI.
• Translate orthodontic insurance rules (claims, eligibility, remittance) into scalable technical solutions.
• Own Epics end-to-end, manage risks, dependencies, and team KPIs for delivery reliability.
• Write clean, robust full-stack code using React on the frontend and .NET Core on the backend.
• Champion AI-assisted engineering and integrate AI tools to automate design, tests, and reviews.
• Set high standards for code quality via code reviews, automated tests, and CI/CD.
• Provide technical leadership and mentorship to engineers, guiding design decisions and collaboration.

Skills

Full-Stack Development

Domain-Driven Design (DDD)

Technical Leadership & Mentorship

AWS Services

CI/CD Pipelines

Tools

GitHub Copilot

Claude

CI/CD Tools

Cloud Architectures

Job description

• Design & System Evolution: Decompose complex business scenarios into clean, service-based architectures and distributed systems.
• Modernize legacy platforms with a focus on simplicity, maintainability, and long-term ROI.
• Domain Alignment: Translate complex orthodontic insurance rules (claims, eligibility, remittance) into clean, high-performing technical solutions.
• Epic Ownership: Own the delivery of Epics end-to-end, actively managing risks, dependencies, and team-level DORA KPIs while ensuring system performance and delivery reliability.
• Full-Stack Development: Write clean, robust, and maintainable code across the stack, leveraging modern JavaScript frameworks (React) on the frontend and .NET Core/.NET Framework on the backend.
• AI-Assisted Engineering: Champion responsible, AI-assisted development. Actively integrate AI tools (e.g., Claude, GitHub Copilot) to automate design, test generation, and code reviews, and build agentic workflows to drive team efficiency.
• Software Design & Quality: Set rigorous standards for code quality through constructive code reviews, comprehensive automated testing (including AI-driven test suites), and continuous integration/delivery (CI/CD).
• Technical Leadership & Mentorship: Guide junior and mid-level engineers on software design patterns, debug cross-module issues, and act as a professional stakeholder manager who can navigate technical disagreements constructively ("disagree and commit").

Requirements

• 10+ years of professional software development experience in .NetCore
• Strong, hands-on experience with the .NET Ecosystem (.NET Core / .NET Framework) and robust relational database design using SQL Server (including query optimization)
• Extensive experience building highly responsive, scalable user interfaces using modern JavaScript frameworks—specifically React and/or Angular (Required)
• Practical experience applying Domain-Driven Design (DDD) principles and building service-based or distributed architectures
• Strong proficiency with AWS services (or other major cloud architectures), CI/CD pipelines and infrastructure provisioning
• Familiarity with high-volume batch processing, background automated jobs, and handling complex data streams

Core Competencies

Demonstrates expertise in full-stack development with a focus on .NET Core and modern JavaScript frameworks like React, while applying Domain-Driven Design principles to create scalable, service-based architectures. Proven ability to lead technical teams, mentor engineers, and ensure high standards of code quality through rigorous testing and CI/CD practices.

Highest-signal resume keywords

• Full-Stack Development
• Domain-Driven Design (DDD)
• Technical Leadership & Mentorship
• AWS Services
• CI/CD Pipelines

ATS Optimization Keywords

Hard Skills

• .NET Core
• .NET Framework
• SQL Server
• React
• Angular
• Service-Based Architecture
• Distributed Systems
• Automated Testing
• Code Quality Standards
• High-Volume Batch Processing

Soft Skills

• Stakeholder Management
• Team Collaboration
• Problem Solving

Industry Keywords

• Orthodontic Insurance
• Claims Processing
• Eligibility Rules
• Remittance

Tools & Technologies

• GitHub Copilot
• Claude
• CI/CD Tools
• Cloud Architectures