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Software Engineer (Senior .NET / FullStack Engineer)

Stellar IT SolutionsSt. Louis, MO🇺🇸United StatesPosted 14 Aug 2026

Quick Overview

Work Type
Hybrid
Level
Mid Senior

Job Description

Position: Software Engineer (Senior .NET / FullStack Engineer)

Location: Remote

Duration: 6+ Months Contract

Role Overview

We are seeking highly skilled Senior .NET / FullStack Engineers with strong AWS and securecoding expertise. This role is critical in investigating vulnerability findings at the code level, determining root causes, implementing secure remediations, testing changes, and deploying them through Regions development pipeline. Candidates must demonstrate deep technical proficiency in backend and fullstack development, combined with a strong understanding of secure coding practices and cloudnative architectures.

Key Responsibilities

  • Investigate and analyze vulnerability findings at the code level.

  • Identify root causes and design secure remediation strategies.

  • Implement fixes in C#/.NET and related frameworks, ensuring compliance with secure coding standards.

  • Conduct thorough testing of remediated code to validate effectiveness and stability.

  • Deploy secure solutions through CI/CD pipelines into production environments.

  • Collaborate with product owners, architects, and crossfunctional teams to ensure secure delivery.

  • Contribute to API security, secure design reviews, and best practices documentation.

  • Support continuous improvement of secure coding standards and vulnerability management processes.


Required Skills

  • Strong expertise in C# / .NET, ASP.Net, React, REST API, SQL.

  • Handson experience with AWS services (Lambda, S3, SQS, DynamoDB).

  • Proficiency with Git, CI/CD pipelines, and secure deployment practices.

  • Demonstrated knowledge of secure coding principles and API security.

  • Ability to take vulnerabilities from finding through remediation and deployment.


Preferred Skills (Strong Pluses)

  • Experience with PostgreSQL databases.

  • Familiarity with Harness for CI/CD orchestration.

  • Exposure to GitHub Copilot for AIassisted development.

  • Background in secure software delivery within enterprise environments.


Qualifications

  • 7+ years of professional software engineering experience.

  • Proven track record in secure coding, vulnerability remediation, and production deployment.

  • Strong problemsolving skills and ability to work independently in a fastpaced environment.

  • Excellent communication and collaboration skills to work across distributed teams.


Skills

DynamoDB
SQL
AWS
C#
.NET
ASP.NET
Git
PostgreSQL
REST
React

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