US Citizens or GC Holders only
Must be on W2 - no C2C
Direct - Hire - Local Applicants onlySeeking an experienced Full-Stack Developer to join its growing AI team. In this role, you'll help support, improve, and build the internal applications used every day by our claims, QA, and sales teams. Our current portfolio includes applications for paid-claims review, multi-vendor parts sourcing, outbound lead management, and representative training, built with Angular front ends and ASP.NET Core (.NET 10) APIs.
This role combines new development with ownership of applications already in production. You'll troubleshoot issues reported by users, improve performance and reliability, keep the technology stack current, build new features end to end, and maintain integrations with critical business systems. You'll also work with AI-enabled functionality, including applications that use LLMs and AI agents to review claims and score risk.
- Support and improve production applications, resolving user-reported issues, performance bottlenecks, and edge cases
- Build new features end to end using Angular, TypeScript, C#, and ASP.NET Core
- Maintain and modernize applications through Angular upgrades, dependency updates, vulnerability patching, and database migrations
- Diagnose and optimize slow queries and application performance
- Maintain integrations with SQL Server, Microsoft Fabric, Salesforce, and third-party vendor APIs
- Support and monitor LLM and AI-agent functionality embedded within production applications
- Containerize and deploy applications using Docker and GitHub Actions
- Support application authentication and access using Active Directory and LDAPS
- Work within existing codebases, understand established design decisions, and make thoughtful, maintainable changes
- Collaborate in a fast-moving environment where solutions are shipped, measured, and iterated based on real-world results
Requirements- Strong full-stack software development experience in a production environment.
- Hands-on experience with C# and ASP.NET Core/.NET.
- Strong understanding of relational databases and SQL; SQL Server experience preferred.
- Experience supporting and maintaining applications after production launch.
- Ability to troubleshoot production issues, analyze existing code, and implement durable fixes.
- Comfortable working from evolving requirements and independently driving features from development through deployment.
- Experience with REST APIs and third-party system integrations.
- Familiarity with Docker, CI/CD pipelines, and GitHub Actions preferred.
- Experience with Active Directory, LDAP/LDAPS, or enterprise authentication preferred.
- Experience with Microsoft Fabric and/or Salesforce integrations preferred.
- Interest in building AI-enabled applications and working with LLMs or AI agents.
- Must be able to work on-site in St. Peters, MO 5 days/week.
- Bachelor's in Computer Science, Software Engineering, MIS, or equivalent experience.
Pay Rate and Benefits - Salary commensurate with experience
- Group Insurance (Medical, Dental, Vision, Life, etc.).
- 401k with Employer Match.
- Discounted Tuition at Lindenwood University.
- Professional development opportunities.
- Basketball, and other recreation available on-site.
- Fitness facilities, with the option to take classes led by on-staff personal trainer (at St. Peters headquarters).
- And more!
Phone: 636-209-5537
PO Box 385, Lebanon, MO 65536
www.timberlinegrp.com
[email protected] 
