Software Developer

eSolutionsFirst, LLC; McLean (VA); On-site; USD 90,000 - 130,000; Full time

Job summary

eSolutionsFirst, LLC is seeking a Software Developer for a long-term contract on-site in McLean, VA. The role requires 5+ years of software development experience and strong coding skills in C#/.NET, Python, or Java, including unit testing and REST API design.

The position emphasizes hands-on work with AI tools such as Claude Code and GitHub Copilot to enhance development workflows and ensure high-quality code reviews and test generation.

Qualifications

• 5+ years of software development experience.
• Proficiency in C#, .NET, Python, or Java, with unit testing and REST API design.

Skills

C#/.Net

Python

Java

Unit testing

REST API design

Tools

Claude Code

GitHub Copilot

Job description

Software Developer - Long Term Contract

Only local W2 candidates are encouraged to apply here.

Job Description

5+ years of software development experience.

Strong coding experience in any of these languages (C#/.Net, Python, Java or similar), unit testing, REST API design.

AI & Tooling

Hands‑on experience with Claude Code, GitHub Copilot, or equivalent AI coding assistants in production development workflows.

Demonstrated ability to prompt LLMs effectively using structured specifications and to critically evaluate generated output.

Familiarity with AI‑assisted test generation and automated code review tooling.