Software Developer II | Modernize Legacy Apps & Own SDLC

SGS Consulting; Alton (IL); On-site; USD 90,000 - 120,000; Full time

Job summary

SGS Consulting is seeking a software engineer with Angular (v12+) and .NET expertise to deliver modern web features while maintaining legacy applications. You will work with TypeScript, RxJS, ASP.NET Web Forms/MVC, .NET Framework, and Blazor to improve stability, security, and performance, and you will mentor others while driving CI/CD practices with Bitbucket.

Join a collaborative team focused on scalable architecture, SOLID principles, and continuous improvement across development and

Qualifications

• Proven experience with Angular (v12+).
• Hands-on experience with Microsoft Access, SQL Server, and SQL.
• Proficient in C#, VB.NET, and Visual Studio.
• Experience with Bitbucket and implementing CI/CD workflows.
• Proven track record maintaining and improving legacy applications (.NET Framework/ASP.NET, VB6, etc.) with emphasis on stability, testability, and security.
• Excellent communication, documentation, and stakeholder management skills; ability to lead initiatives and mentor others.

Responsibilities

• Deliver features in Angular (v12+) using TypeScript, RxJS, Angular CLI, and Angular Material.
• Maintain and enhance legacy applications (ASP.NET Web Forms/MVC, .NET Framework, VB6, classic ASP, Blazor).
• Bug fixes, performance tuning, and security hardening.
• Refactoring to reduce technical debt and add automated tests.
• Incremental modernization such as APIs and modularization.
• Architect and design solutions applying SOLID, clean architecture, and DDD.
• Own the SDLC: plan, estimate, build, code review, test, and release with CI/CD and Git workflows.
• Optimize performance: profiling, bundle optimization, lazy-loading, caching, SQL query tuning.
• Collaborate and mentor: partner with product owners, QA, DevOps, and stakeholders.

Skills

Angular

C#

VB.NET

SQL

SQL Server

Tools

Bitbucket

CI/CD workflows

Visual Studio

Job description

SGS Consulting is seeking a software engineer with Angular (v12+) and .NET expertise to deliver modern web features while maintaining legacy applications. You will work with TypeScript, RxJS, ASP.NET Web Forms/MVC, .NET Framework, and Blazor to improve stability, security, and performance, and you will mentor others while driving CI/CD practices with Bitbucket.

Join a collaborative team focused on scalable architecture, SOLID principles, and continuous improvement across development and