.NET Mainframe Developer

System One

📍 vienna, fairfax county, va, United-States

Full-time Other-General Posted June 07, 2026

Job Description

Job Overview

Job Title: .NET Developer

Location: Remote

Type: Contract

Work Model: Remote

Responsibilities

  • Design, develop, and enhance complex software applications supporting mission‑critical, time‑sensitive initiatives focused on integrating distributed applications with the organization's Core Banking platform.
  • Serve as a senior technical contributor responsible for translating business and platform requirements into secure, scalable, and reliable solutions across the full software development lifecycle.
  • Operate with minimal supervision while exercising strong technical judgment.
  • Collaborate with Core Banking, testing, middleware, and platform teams to manage dependencies, mitigate risk, and meet aggressive delivery timelines.
  • Design, develop, and optimize high‑quality software applications using various advanced programming langu...