Application Support Engineer (C#)

    • Attain Partners
  • Washington, DC
  • Posted 2 days ago | Updated 14 hours ago

Overview

On Site
Full Time

Skills

Recruiting
Security Clearance
GC
Employment Authorization
Application Support
Technical Support
Web Applications
Software Security
Cyber Security
Cloud Computing
Management
Version Control
Technical Writing
Backup Administration
FOCUS
C#
.NET
Frontend Development
React.js
JavaScript
TypeScript
HTML
Cascading Style Sheets
DevSecOps
Continuous Integration
Continuous Delivery
Kubernetes
Amazon Web Services
Microsoft Office
Microsoft Excel
Microsoft SharePoint
Relational Databases
PostgreSQL
Oracle
Microsoft SQL Server
Problem Solving
Conflict Resolution
Communication
Collaboration
Regulatory Compliance
JIRA
Bitbucket
Git
Agile
Workflow
COTS
Performance Tuning
Backup
Database

Job Details

Job Description

This is a full-time, direct hire role with one of our federal contractor clients. The position is being managed by Attain Talent, the staffing division of Attain Partners.


Work Location: Washington, DC

Employment: Full Time

Clearance: Public Trust eligibility (USC or GC work authorization required)


We are seeking an Application Support Engineer with strong C#/.NET experience. The primary focus of this role is to maintain and support existing web applications, perform bug fixes, cybersecurity remediations, and ensure ongoing performance and compliance. The ideal candidate will also have working knowledge of AWS containerized environments, CI/CD pipelines, and familiarity with Microsoft 365 tools.


This position requires a hands-on engineer who can work across front-end and back-end systems, collaborate with cross-functional teams, and provide technical support for both custom applications and Microsoft 365-based tools.


Key Responsibilities:

  • Maintain, troubleshoot, and enhance existing C#/.NET web applications.
  • Support full stack application functionality including front-end (React.js, HTML/CSS/JavaScript), APIs, and back-end services, including new feature development across the stack when required.
  • Perform application security scanning and remediation in compliance with cybersecurity requirements.
  • Support deployment in a containerized cloud environment using IaC and CI/CD processes.
  • Provide configuration and technical oversight for Microsoft 365 tools (e.g., SharePoint, Power Apps, Access-based systems).
  • Manage version control, configuration changes, and technical documentation.
  • Collaborate with database administrators to ensure performance, patching, upgrades, and backups (PostgreSQL, Oracle).
  • Participate in Agile team ceremonies, code reviews, and requirements discussions.


Required Qualifications:

  • 3+ years of experience in full stack development with a focus on C# and .NET.
  • Experience with front-end development using React.js, JavaScript, TypeScript, HTML, and CSS.
  • Understanding of containerization concepts and basic DevSecOps practices (CI/CD, Git, Kubernetes/AWS).
  • Familiarity with Microsoft 365 applications (Access, Excel, SharePoint, Power Platform).
  • Experience working with relational databases (PostgreSQL, Oracle, or SQL Server).
  • Strong problem-solving skills and ability to troubleshoot technical issues across the stack.
  • Excellent communication and collaboration skills.


Preferred Qualifications:

  • Experience supporting federal or enterprise environments with security compliance requirements.
  • Familiarity with Jira, Bitbucket, Git, and Agile workflows.
  • Exposure to low-code/no-code platforms or commercial off-the-shelf (COTS) applications.
  • Understanding of performance tuning, patching, and backup strategies for application and database layers.
Employers have access to artificial intelligence language tools (“AI”) that help generate and enhance job descriptions and AI may have been used to create this description. The position description has been reviewed for accuracy and Dice believes it to correctly reflect the job opportunity.