Senior Software Engineer

Visionaire Partners
St. Louis, Missouri, United StatesContract$158,080–$164,320Posted Sep 15, 2026

About the role

Exciting contract opportunity for someone who loves technology, and is highly motivated to be successful and grow their career as a Senior Software Engineer within a top notch enterprise environment.

Responsibilities

Developing and deploying Web and .NET-based applications and services

Leading and conducting design and code reviews for both peers and junior developers

Participating and being an advocate for issue resolution and change control processes

Working closely with business leaders to understand strategic and financial objectives and then translating them into technical specifications and applications

Leading and participating in architecture and design meetings for major components and sub-systems

Developing and documenting designs for components, modules and sub-systems

Assisting Director with defining and estimating project task effort and required resources

Recommending and driving best practices, standards, processes and tools

This is a contract opportunity through the end of 2026. Candidates must be located in St. Louis, MO and work 4 days a week in office and 1 day remotely (Friday)!

Visionaire Partners offers all full-time W2 contractors a comprehensive benefits package for the contractor, their spouses/domestic partners, and dependents. Options include 401k with up to 4% match, medical, dental, vision, life insurance, short and long term disability, critical illness, hospital indemnity, accident coverage, and both Medical and Dependent Care Flexible Spending Accounts.

Required Skills

7+ years of full lifecycle software development experience in enterprise environments

Core Tech Stack: C#, .NET Framework/ASP.NET, MVC, SQL Server, and Web Services/APIs

Web Fundamentals: JavaScript, jQuery, HTML, XML

Architecture: SOA, design patterns, and mission-critical system architecture

PREFERRED SKILLS:

Application development/integration experience with Team Foundation Server version control software

Experience working in a production environment with IIS 7, SQL Server 2014

Security software development training

Automated testing tools/regression testing

Open source tools and technologies

Must be authorized to work in the US. Sponsorships are not available.

Pay range: $76-79/hour W2

Responsibilities

  • Developing and deploying Web and .NET-based applications and services
  • Leading and conducting design and code reviews for both peers and junior developers
  • Participating and being an advocate for issue resolution and change control processes
  • Working closely with business leaders to understand strategic and financial objectives and then translating them into technical specifications and applications
  • Leading and participating in architecture and design meetings for major components and sub-systems
  • Developing and documenting designs for components, modules and sub-systems
  • Assisting Director with defining and estimating project task effort and required resources
  • Recommending and driving best practices, standards, processes and tools

Qualifications

  • 7+ years of full lifecycle software development experience in enterprise environments
  • Core Tech Stack: C#, .NET Framework/ASP.NET, MVC, SQL Server, and Web Services/APIs
  • Web Fundamentals: JavaScript, jQuery, HTML, XML
  • Architecture: SOA, design patterns, and mission-critical system architecture

Benefits

  • 401k with up to 4% match
  • Medical, dental, vision, life insurance
  • Short and long term disability
  • Critical illness, hospital indemnity, accident coverage
  • Medical and Dependent Care Flexible Spending Accounts

Skills mentioned

C#.NETASP.NETJavaScriptHTMLMicrosoft SQL ServerREST APIsSystem DesignBackend DevelopmentSoftware Testing

About Visionaire Partners

Visionaire Partners is an IT & corporate staffing firm that matches superior candidates with top quality companies. We provide SOW, contract, contract-to-hire, and direct hire talent to give our client companies the flexibility to meet their business objectives. Our clients want the most capable professionals in the shortest period of time. We deliver.

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