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We are seeking experienced Web Developers to join the ContextForge MCP Gateway team to build and enhance the Admin UI and eventually transition to a new UI stack.
ContextForge is an open-source production-grade gateway proxy and registry for Model Context Protocol (MCP) servers and A2A Agents. It federates MCP and REST services providing unified discovery auth rate-limiting observability virtual servers multi-transport protocols plugins and an Admin UI: https://github.com/IBM/mcp-context-forge
As a Senior Web Developer you will build the Admin UI using HTMX Alpine.js and TypeScript - creating real-time dashboards for MCP gateway operations. You will work on CRUD interfaces real-time features federation visualization and virtual server composition tools. This role is ideal for developers experienced with server-driven UI patterns (HTMX) or willing to learn an alternative to heavy client-side frameworks like React.
Your Role And Responsibilities UI Development• Build CRUD interfaces: tools servers A2A agents gateways prompts resources with RBAC
• Create real-time features: log viewer with filtering search export capabilities
• Implement WebSocket streaming for live updates and event monitoring
• Design metrics dashboards: integration with Prometheus charts visualizations
• Build responsive layouts: mobile-first design with Tailwind CSS eventually transitioning to a new stack
• Develop dark mode toggle and theme management
Federation & Virtual Server UI• Create federation UI: peer gateway status health checks tool aggregation visualization
• Build virtual server composition interface: drag-and-drop tool selection visual builder
• Implement A2A agent configuration UI: agent registration parameter configuration
• Design connection string exports: code snippets for client configuration
• Create visual representations of complex system state
HTMX & Server-Driven Architecture• Implement HTMX patterns: server-driven partial updates out-of-band swaps
• Design hypermedia-driven workflows: progressive enhancement graceful degradation
• Integrate with FastAPI backend: Jinja2 templates endpoint coordination
• Optimize for low JavaScript footprint: leverage HTMX for interactivity
• Create reusable HTMX components and patterns
Alpine.js & Interactivity• Use Alpine.js for lightweight client-side reactivity: modals dropdowns accordions
• Implement form validation and client-side state management
• Create interactive components: data tables filters search interfaces
• Handle client-side routing and navigation enhancements
• Build component library with Alpine.js directives
Testing & Quality• Write Playwright UI tests: E2E tests visual regression testing accessibility testing
• Implement accessibility standards: WCAG compliance ARIA labels keyboard navigation
• Test cross-browser compatibility: Chrome Firefox Safari Edge
• Perform mobile testing and responsive design validation
• Create test fixtures and page objects for maintainable tests
• Few years of frontend development experience with HTML CSS and JavaScript/TypeScript
• Strong expertise in semantic HTML5 and modern CSS3 (Flexbox Grid animations)
• Proficiency with TypeScript: types interfaces generics tooling
• Experience with CSS frameworks: Tailwind CSS Bootstrap or similar utility-first frameworks
• Understanding of responsive design and mobile-first development
HTMX or Server-Driven UI• Experience with HTMX or willingness to learn server-driven UI patterns
• Understanding of hypermedia concepts and progressive enhancement
• Experience with traditional server-rendered applications (preferred over heavy SPA frameworks)
• Knowledge of partial page updates and out-of-band swaps
• Familiarity with SSR (Server-Side Rendering) patterns
JavaScript & TypeScript• Strong JavaScript fundamentals: ES6+ async/await promises event handling
• TypeScript experience: type definitions interfaces generics tooling
• Experience with vanilla JavaScript or lightweight frameworks (Alpine.js Stimulus or similar)
• Understanding of DOM manipulation and browser APIs
• Knowledge of JavaScript module systems: ESM bundling basics
UI/UX & Design• Strong sense of UI/UX design principles and usability
• Experience with responsive design and mobile-first approaches
• Knowledge of accessibility standards: WCAG ARIA keyboard navigation
• Understanding of color theory typography and visual hierarchy
• Ability to translate designs into pixel-perfect implementations
Testing & Quality• Experience with E2E testing: Playwright Cypress Selenium or similar
• Knowledge of accessibility testing tools and techniques
• Understanding of cross-browser compatibility issues and solutions
• Experience with visual regression testing
• Proficiency with browser DevTools for debugging and performance
• Experience with Jinja2 Django templates or similar server-side templating engines
• Experience with node.js Figma IBM Carbon React
• Knowledge of WebSocket client implementation and real-time updates
• Understanding of Service Workers and Progressive Web Apps (PWA)
• Experience with frontend build tools: Vite esbuild Rollup
• Knowledge of CSS preprocessors: Sass PostCSS
Real-Time & Interactive Features• Experience building real-time dashboards and data visualization
• Knowledge of charting libraries: Chart.js D3.js Recharts ApexCharts
• Experience with WebSocket or SSE for live updates
• Understanding of data streaming and efficient rendering
• Experience with virtual scrolling for large datasets
API Integration• Experience consuming REST APIs from frontend applications
• Knowledge of API authentication: JWT OAuth2 bearer tokens
• Understanding of error handling and retry logic in frontend
• Experience with API documentation tools: Swagger UI OpenAPI
• Knowledge of GraphQL clients (Apollo URQL) is a plus
Security & Best Practices• Understanding of frontend security: XSS CSRF CSP secure headers
• Knowledge of secure authentication patterns in frontend
• Experience with content security policy and CORS
• Understanding of OWASP Top 10 vulnerabilities relevant to frontend
Development Tools• Proficiency with version control: Git workflows pull requests code reviews
• Experience with linters and formatters: ESLint Prettier Stylelint
• Knowledge of CI/CD for frontend: automated testing build pipelines
• Familiarity with package managers: npm yarn pnpm
• Experience with monorepo tools: Turborepo Nx or similar