Full Stack Developer

Concept Solutions, LLC

. Build, maintain, and modernize critical enterprise web applications .

Posted 11/3/2026full-timeRemote • United StatesMid-LevelSenior💰 $110,000 - $114,000 per yearWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates expertise in full-stack web application development, particularly in refactoring legacy systems and migrating to AWS cloud environments. Proficient in building secure, accessible web interfaces and optimizing workflows within a DevSecOps framework.

Highest-signal resume keywords

Full-Stack Web Application DevelopmentAWS Cloud MigrationRefactoring Legacy CodeSecure RESTful API DesignCI/CD Pipeline Implementation

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

HTML5CSS3JavaScriptTypeScript.NET CoreC#Node.jsPythonDatabase Query OptimizationMicroservices Architecture

Tools & Technologies

AWS GovCloudAWS OutpostsAzure DevOpsGitLab CIGitHub ActionsSharePointPower AutomateK2 WorkflowsAWS Step FunctionsSAST/DAST Security Scans

Certifications & Qualifications

CompTIA Security+AWS Certified Developer (Associate)AWS Certified Solutions Architect (Associate)Professional Certifications in ReactProfessional Certifications in AngularProfessional Certifications in Vue

Industry Keywords

DevSecOpsFISMA ModerateNIST SP 800-53OWASP Top 10Public Trust Security Requirement

Tech Stack

Tools & technologies

AngularAWSAzureCloudJavaScriptMicroservicesMS SQL ServerNode.jsPostgresPythonReactSQLTypeScriptVue.js.NET

About the role

Key responsibilities & impact

Build, maintain, and modernize critical enterprise web applications
Bridge legacy on-premises systems with AWS cloud environments
Refactor and migrate legacy web applications and workflows from SharePoint Subscriber Edition On-Premises to open-source technology stacks hosted on AWS, including AWS GovCloud and AWS Outposts
Use artificial intelligence to refactor legacy code
Collaborate as a member of the DevSecOps team
Ensure front-end and back-end code is performant, accessible, and secure
Modernize legacy application interfaces into secure cloud architectures
Remediate findings from automated security pipelines
Establish resilient, error-tolerant workflows supporting continuity of operations
Participate in building code layers with redundancy, error handling, and failover capabilities
Support highly available mission-essential FAA functions under a FISMA Moderate framework

Requirements

What you’ll need

Bachelor's degree in a technical discipline (Computer Science, Electrical Engineering, Information Technology, or a related field)
5 years of experience in full-stack web application development
Proven track record refactoring monolithic/legacy platforms and migrating workloads to AWS
Three or more years of practical experience building and maintaining complex, responsive, and accessible web interfaces
Experience refactoring and modernizing legacy SharePoint pages, customized Master Pages, InfoPath forms, and web parts
Deep understanding of HTML5, CSS3, modern JavaScript/TypeScript
Strong proficiency in server-side open-source development such as .NET Core, C#, Node.js, or Python
Experience designing secure, modular RESTful APIs
Experience replacing SharePoint SSOM and CSOM with open-source API architectures
Experience decomposing monolithic logic into microservices or serverless applications
Experience analyzing SharePoint site hierarchies, document libraries, lists, and item-level permissions
Experience migrating SharePoint list data into relational databases such as Microsoft SQL Server, PostgreSQL, or Amazon RDS
Experience optimizing database queries
Experience refactoring SharePoint Designer, Power Automate, or K2 workflows into AWS Step Functions or serverless event-driven architectures
Familiarity with AWS GovCloud and AWS Outposts
Understanding of CI/CD pipelines such as Azure DevOps, GitLab CI, or GitHub Actions
Experience with automated SAST/DAST security scans
Strong proficiency in OWASP Top 10 secure coding principles
Knowledge of NIST SP 800-53 security controls and FISMA Moderate
Experience remediating pipeline scan findings
Experience aligning SharePoint permissions and AD security groups with AWS IAM, AWS IAM Identity Center, OAuth2, OIDC, and SAML
Public Trust security requirement
CompTIA Security+ required within 6 months of hire
AWS Certified Developer (Associate) or AWS Certified Solutions Architect (Associate) preferred
Professional certifications in React, Angular, or Vue preferred
Ability to work 40 hours per week, Monday through Friday, during core hours of 9:00 a.m. to 3:00 p.m. local time

Benefits

Comp & perks

Health insurance
Dental insurance
Vision insurance
Life insurance
Comprehensive 401(k) plan with matching and immediate vesting
Career development
Positive workplace culture centered on innovation and engagement