Front-End Application & Web Platform Engineer Job at Tri-State Equipment, Bridgeton, MO

  • Tri-State Equipment
  • Bridgeton, MO

Job Description

Job Description

Job Description

POSITION SUMMARYTri-State is seeking a practical, hands-on Front-End Application & Web Platform Engineer to support both our public web presence and a growing internal application ecosystem. In this role, you will focus on taking functional, internally designed applications from approximately 85–90% complete to polished, production-ready quality, as well as maintaining them post- release.Additionally, you will take full ownership of rebuilding and modernizing the existing public websites as they migrate from legacy ASPX implementations to a modern, AWS-hosted static architecture. This is a role focused on execution, user experience refinement, and front-end reliability. You will collaborate directly with the Technical Lead, receiving existing source code, functional APIs, and established architecture, and independently driving software across the finish line.KEY RESPONSIBILITIESInternal Applications & Intranet PlatformApplication Completion & Refinement: Complete and refine partially finished application front ends, connecting existing UI components to REST APIs and ensuring seamless client/server data flow.UI/UX & Workflow Enhancements: Improve forms, tables, filters, tabs, modals, navigation, client-side validation, and application workflows.State & Error Handling: Implement appropriate loading, success, warning, error, and empty states; improve client-side validation and error handling.Troubleshooting & Bug Fixing: Troubleshoot JavaScript and browser-side behavior, diagnose layout and spacing issues, fix responsiveness, and resolve cross-browser compatibility bugs reported by users.Security & Integration: Work with authentication, sessions, JWT-based APIs, CORS, and role-based UI behavior.Component Standardization: Refactor repeated interface patterns into reusable components and utilities to help establish consistent UI standards across internal applications.Backend Alignment & Escalation: Make small supporting backend/API tweaks when appropriate while recognizing when changes impact underlying architecture or business logic, escalating those issues to the Technical Lead.Testing & Deployment Maintenance: Thoroughly test changes before production deployment and provide ongoing maintenance and improvements post-release.Public Website Platform ModernizationPlatform Migration: Rebuild legacy ASPX public websites using modern HTML, CSS, and JavaScript within a static-site architecture hosted on AWS.Branding & Component Design: Preserve existing branding, content, and functionality while building responsive, reusable page and content components.Dynamic Integration: Integrate dynamic content delivered through APIs, S3, or other backend services to maintain site flexibility without relying on a traditional CMS for every update.Performance & Optimization: Optimize site performance, Core Web Vitals, accessibility, browser compatibility, and maintain analytics/tracking integrations.Technical SEO / AEO / GEO Implementation: Execute technical discovery and search recommendations supplied by Marketing and analytics teams, including semantic HTML, page metadata, canonical URLs, structured data/schema markup, XML sitemaps, robots.txt, content hierarchy, and image optimization.REQUIRED QUALIFICATIONSRelevant Experience: Approximately 3–6 years of professional experience as a Front-End Engineer, Web Application Developer, UI Engineer, or Full-Stack Developer with a strong front-end focus (demonstrated capability may be prioritized over formal degrees or rigid years of experience).Core Front-End Proficiency: Strong, practical mastery of HTML5, CSS, and modern JavaScript.Application Troubleshooting: Proven ability to dive into existing source code, debug complex browser-side issues, and resolve front-end state/event handling bugs using browser developer tools.Web & API Integration: Solid working knowledge of REST APIs, JSON, asynchronous requests, CORS,  authentication/authorization mechanisms (JWT), and client/server architecture.Responsive Design & Version Control: Demonstrated skill in building responsive layouts, cross-browser compatibility, and source control using Git.Self-Direction & Execution: Strong independent problem-solving skills with the ability to take a functional API and high-level workflow description and independently determine what needs to be fixed or completed.PREFERRED QUALIFICATIONSAWS Cloud Environment: Experience with AWS cloud services (S3, CloudFront, Lambda, DynamoDB) and serverless web application patterns.Modern Tooling: Proficiency with TypeScript and modern front-end build tooling/workflows.Technical SEO & Search Infrastructure: Familiarity with technical SEO standards, Schema.org structured data, Google Search Console, and web analytics tools.Accessibility & Performance: Understanding of Web Content Accessibility Guidelines (WCAG) and Core Web Vitals performance optimization.DevOps Integration: Exposure to CI/CD pipelines or automated deployment workflowsTri-State is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color,religion, sex, sexual orientation, gender identity, national origin, disability, or veteran status.

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