[Hiring] Software Engineer, UX/DX @Sealed Security

Role Description

We're building a security-focused AI coding agent using Rust and WebAssembly. The product has a working MVP and we're hiring an engineer to bring the developer experience up to speed.

This is a pre-seed venture backed by experienced enterprise software operators, and founded by an ex-Google software engineer.

• Own the UX and developer experience of a Rust-based AI coding agent.
• Make a sandboxed tool feel as polished and responsive as the best developer tools available today.
• This is a terminal-first role working across the CLI, the agent loop, and the runtime.
• Ship features that developers interact with directly.
• This is not a "build from spec" role; you'll have significant autonomy over how features are designed and implemented, working directly with the founder.

Qualifications

• Strong Rust experience — you've shipped Rust code to production or have substantial open source Rust projects. Show us your GitHub.
• Terminal UX sensibility — you care about how CLIs feel, with opinions about input latency, color schemes, and error messages.
• AI-native workflow — you actively use AI coding tools (Claude Code, Cursor, etc.) in your daily work and you're genuinely faster because of them.
• Strong code reviewer and architect; this is security software — every line matters.
• Self-directed — you can take a feature from "we need this" to shipped without detailed specs.

Requirements

• Preferred WebAssembly experience — Wasmtime, WASI, WIT interfaces, component model.
• Experience with ratatui, crossterm, or similar terminal UI frameworks.
• Experience with Cap'n Proto or similar RPC/serialization frameworks.
• Familiarity with LLM tool-use APIs (Claude, OpenAI, etc.).
• Previous startup experience or comfort with ambiguity.

Benefits

• Competitive compensation, commensurate with experience.
• Remote work (US preferred).
• Opportunity to work in a fast-paced, innovative environment.
• High autonomy in a small team.

Company Description

AI, sealed and secured.