Senior C# Engineer

REMOTE, EST hours

Contract to hire

Our client is seeking a Senior Full Stack Software Engineer to play a critical, hands-on leadership role in designing, building, and scaling software solutions across a multi-platform environment. This individual will act as a technical problem solver, architect, and mentor, helping drive development standards and decision-making across the team.

This is a high-impact role where you will balance hands-on development (50%) with technical leadership (50%), helping guide junior developers, streamline processes, and build scalable solutions.

Responsibilities

Design, develop, and maintain full stack applications across multiple platforms

Take ownership of technical challenges and proactively drive solutions

Build and design APIs, system integrations, and scalable architectures

Lead code reviews, pull requests, and enforce development best practices

Mentor and coach junior staff, providing guidance and code review

Help define technical roadmaps and break down work into actionable development tasks

Collaborate with leadership to translate business needs into technical solutions

Support both new feature development and ongoing maintenance of existing systems

Contribute to modernizing legacy applications and migrating older systems

Improve efficiency by reducing unnecessary process overhead and enabling quicker decision-making

Required Qualifications

5+ years of experience in full stack software development

Strong proficiency in C#/.NET and relational databases (SQL)

Experience building and consuming APIs and working across distributed systems

Demonstrated ability to independently solve complex technical problems

Experience contributing to architecture and system design decisions

Ability to balance hands-on coding with leadership responsibilities

Preferred Qualifications

Experience with modern frontend frameworks (Vue.js, React, or similar)

Familiarity with containerization (Docker) and cloud environments

Experience working with legacy systems and modernization efforts

Exposure to AI tools, LLMs, or developer productivity tooling

Prior experience mentoring or leading developers