Senior Software Engineer — AI Frontier Engineering (Contract) en Crossbridge

This is not a traditional software engineering role.

We’re working on a project focused on training next-generation AI models to reason like real senior engineers working in production environments.

Most developers are already using AI tools.

This opportunity is about helping shape how those AI tools will think in the future.

What makes this different?

We are NOT only looking for developers who can code fast.

We’re looking for engineers with strong technical judgment:

People who quickly identify bad architectural decisions

Engineers who understand real production tradeoffs

Strong debuggers and systems thinkers

Engineers capable of challenging AI-generated solutions when they are technically wrong

The real value here is not only writing code.

The real value is how you think.

What you’ll work on

• Solve real engineering tasks inside real repositories
• Work daily with AI-native coding workflows (Claude Code, Cursor, etc.)
• Detect reasoning failures in AI-generated solutions
• Evaluate architecture, debugging approaches, and code quality
• Document how a senior engineer would properly solve complex technical problems
• Help improve how frontier AI systems reason about software engineering
• Ideal background

We’re especially interested in engineers who:

Have strong real-world production experience

• Enjoy architecture and deep technical problem solving
• Have experience making technical decisions under ambiguity
• Are comfortable reviewing and critiquing code generated by AI tools
• Already use AI-assisted engineering workflows in daily work
• Logistics
• Remote
• Freelance turning into Contractor 
• Hourly compensation
• Preference for PST ±4 hours overlap
• This opportunity is designed for engineers who enjoy:
• AI-native workflows, architecture, debugging, systems thinking, and solving hard technical problems.

If you want to work close to frontier AI systems that are actively transforming software engineering, we’d love to talk