Full Stack Application Engineer
Title: Full Stack Application EngineerDuration: 3-month Contract to Hire (07/01/2026 – 09/30/2026)Location: Hybrid – Schaumburg, IL (Expected 4 days onsite)Must-Haves:Core Backend:3-4 years of strong experience with .NET / .NET Core and C#Hands-on experience with Entity Framework Core (EF Core) and ORM best practicesProven experience designing and developing RESTful APIs and microservices architecturesStrong understanding of object-oriented programming (OOP), design patterns, and clean architecture principlesExperience with SQL Server (query optimization, indexing, stored procedures)Familiarity with authentication and authorization mechanisms (OAuth, JWT, identity frameworks)Front End & UI Development:Experience with modern JavaScript frameworks (Angular strongly preferred)Strong proficiency in:TypeScriptJavaScript (ES6+)HTML5, CSS3, responsive designExperience building component-based UI architecturesExperience using Git and collaborative workflows (GitHub, Azure DevOps, etc.)Familiarity with CI/CD pipelines and using Git and collaborative workflowsPlusses:Experience with containerization (Docker) and cloud platforms (Azure preferred)Exposure to AI-assisted development tools (GitHub Copilot or similar)Knowledge of event-driven architectures (messaging, pub/sub systems)Exposure to API gateways and service orchestrationExperience with automated testing frameworks (unit, integration, end-to-end)Experience in insurance or underwriting systemsBackground in legacy system modernization initiativesJob Description:Insight Global is seeking a Full-Stack Application Developer for a large insurance client. This role will be responsible for designing, developing, enhancing, and maintaining core business applications that support complex underwriting and enterprise workflows. The ideal candidate will bring strong backend expertise in .NET / .NET Core along with experience in modern front-end frameworks, contributing to both application modernization and new feature development. This position plays a key role in supporting and evolving ELD’s application portfolio, implementing new business capabilities, and ensuring high availability and performance of mission-critical systems. The developer will work closely with ELD business stakeholders, underwriting teams, and IT leadership to translate specialized business requirements into scalable, maintainable technical solutions. This is a full-stack role with a primary focus on backend development (~60%) and significant frontend responsibilities (~40%). The position currently follows a hybrid work model, requiring on-site presence in the Schaumburg office four days per weekDay-to-Day:Design, develop, and maintain full-stack applications using .NET / .NET Core and modern UI frameworksFocus on backend development (~60%) and frontend development (~40%)Build and enhance RESTful APIs and backend servicesDevelop and maintain frontend UI componentsMaintain and enhance existing applications, frameworks, and shared librariesImplement new features aligned with business processes and workflowsTroubleshoot production issues and provide ongoing supportEnsure applications meet security, performance, and architectural standardsContribute to modernization efforts and technical debt reductionCollaborate with business stakeholders, underwriting teams, and IT leadershipParticipate in code reviews, testing, CI/CD pipelines, and deployments