Senior VS Code Extension Developer — ADE Tooling (DeDot/ADE Team)
Full-time position

Key Responsibilities

- Design, develop, and maintain the ADE VS Code extension for mainframe application development
- Build and extend reactive webview UIs using Svelte within the VS Code extension framework
- Implement and maintain message-passing protocols between extension host and webviews
- Lead architectural decisions and drive technical solutions end-to-end
- Contribute to the FastAPI REST backend and PostgreSQL data layer as needed
- Take ownership of features from development through production
- Mentor team members and help shape engineering culture through best practices
- Align with product owners and team members on business requirements
- Apply best practices like CI/CD, automated testing, and code quality tooling
- Work and collaborate within international projects
- Proven team player with strong communication skills

Technical Skills

Strong knowledge of the following technologies:
- TypeScript and Node.js — VS Code Extension API, extension host, webview sandbox, IPC message protocols
- Python 3.11+ — FastAPI, async patterns, Pydantic
- Strong grasp on Linux/Bash/Perl scripting
- Svelte and Vite — Reactive UI development for VS Code webviews
- VS Code Extension development — Command registration, tree views, settings, packaging (VSCE)
- AI-assisted development — Hands-on experience with Claude Code (Anthropic) or equivalent tools for day-to-day coding workflows
- REST API consumption — HTTP fetch, JWT Bearer auth, OpenAPI, PostgREST

Good working knowledge:
- PostgreSQL — Schema understanding, query writing
- Docker and Docker Compose — Local dev environment setup
- GitHub Actions CI/CD
- Ansible / Ansible Automation Platform

Nice to have:
- Mainframe concepts (PL/I, JCL, component lifecycle management)
- DB2 LUW basics
- MicroFocus - experience with server side MF commands
- C++ / maintain internal server side tools

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